Walchem W900 Operating Manual

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W900 Series

Water Treatment Controller

Instruction Manual

Five Boynton Road Hopping Brook Park Holliston, MA 01746 USA

TEL: 508-429-1110 WEB: www.walchem.com

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Notice

Proprietary Material

The information and descriptions contained herein are the property of WALCHEM. Such information and descriptions may not be copied or reproduced by any means, or disseminated or distributed without the express prior written permission of WALCHEM, 5 Boynton Road, Holliston, MA 01746.

This document is for information purposes only and is subject to change without notice.

Statement of Limited Warranty

WALCHEM warrants equipment of its manufacture, and bearing its identication to be free from defects in workmanship

and material for a period of 24 months for electronics and 12 months for mechanical parts and electrodes from date of delivery from the factory or authorized distributor under normal use and service and otherwise when such equipment is used in accordance with instructions furnished by WALCHEM and for the purposes disclosed in writing at the time of purchase, if any. WALCHEM’s liability under this warranty shall be limited to replacement or repair, F.O.B. Holliston, MA U.S.A. of any defective equipment or part which, having been returned to WALCHEM, transportation charges prepaid, has been inspected and determined by WALCHEM to be defective. Replaceable elastomeric parts and glass components are expendable and are not covered by any warranty.

THIS WARRANTY IS IN LIEU OF ANY OTHER WARRANTY, EITHER EXPRESS OR IMPLIED, AS TO DESCRIPTION, QUALITY, MERCHANTABILITY, FITNESS FOR ANY PARTICULAR PURPOSE OR USE, OR ANY OTHER MATTER.

180686 Rev. E Feb 2019

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Contents

1.0 INTRODUCTION ................................................................................................................................1

2.0 SPECIFICATIONS ..............................................................................................................................2

2.1 Measurement Performance ................................................................................................................2

2.2 Electrical: Input/Output .......................................................................................................................3

2.3 Mechanical ........................................................................................................................................5

2.4 Variables and their Limits ...................................................................................................................6

3.0 UNPACKING & INSTALLATION .........................................................................................................9

3.1 Unpacking the unit ..............................................................................................................................9

3.2 Mounting the electronic enclosure ....................................................................................................10

3.3 Sensor Installation ............................................................................................................................10

3.4 IconDenitions .................................................................................................................................13

3.5 Electrical installation .........................................................................................................................14

4.0 FUNCTION OVERVIEW ..................................................................................................................32

4.1 Front Panel .......................................................................................................................................32

4.2 Touchscreen ..................................................................................................................................... 32

4.3 Icons ................................................................................................................................................32

4.4 Startup ..............................................................................................................................................34

4.5 Shut Down ........................................................................................................................................43

5.0 OPERATION using the touchscreen ................................................................................................43

5.1 Alarms Menu ..................................................................................................................................43

5.2 Inputs Menu .....................................................................................................................................44

5.2.1 Contacting Conductivity .........................................................................................................47

5.2.2 Electrodeless Conductivity .....................................................................................................47

5.2.3 Temperature ........................................................................................................................... 48

5.2.4 pH ...........................................................................................................................................48

5.2.5 ORP .......................................................................................................................................49

5.2.6 Disinfection .............................................................................................................................49

5.2.7 Generic Sensor .....................................................................................................................50

5.2.8 Corrosion Input .......................................................................................................................51

5.2.9 Corrosion Imbalance Input .....................................................................................................52

5.2.10 Transmitter Input and AI Monitor Input ................................................................................... 53

5.2.11 Fluorometer Input ...................................................................................................................53

5.2.12 Analog Flowmeter Input .........................................................................................................54

5.2.13 DI State ..................................................................................................................................54

5.2.14 Flow Meter, Contactor Type ...................................................................................................55

5.2.15 Flow Meter, Paddlewheel Type ..............................................................................................55

5.2.16 Feed Monitor ..........................................................................................................................56

5.2.17 DI Counter Input .....................................................................................................................58

5.2.18 Virtual Input – Calculation ......................................................................................................58

5.2.19 Virtual Input – Redundant ......................................................................................................59

5.2.20 Virtual Input – Raw Value ....................................................................................................... 60

5.2.21 Virtual Input - Disturbance ......................................................................................................61

5.3 Outputs Menu .................................................................................................................................62

5.3.1 Relay, Any Control Mode ........................................................................................................62

5.3.2 Relay, On/Off Control Mode ...................................................................................................62

5.3.3 Relay, Flow Timer Control Mode ............................................................................................63

5.3.4 Relay, Bleed and Feed Control Mode ....................................................................................63

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5.3.5 Relay, Bleed then Feed Control Mode ...................................................................................63

5.3.6 Relay, Percent Timer Control Mode .......................................................................................64

5.3.7 Relay, Biocide Timer Control Mode ........................................................................................64

5.3.8 Relay, Alarm Output Mode .....................................................................................................65

5.3.9 Relay, Time Proportional Control Mode .................................................................................66

5.3.10 Relay, Intermittent Sampling Control Mode ............................................................................ 66

5.3.11 Relay, Manual Mode ..............................................................................................................67

5.3.12 Relay, Pulse Proportional Control Mode ................................................................................67

5.3.13 Relay, PID Control Mode ........................................................................................................ 68

5.3.14 Relay, Dual Set Point Mode ...................................................................................................70

5.3.15 Relay, Timer Control Mode .....................................................................................................71

5.3.16 Relay, Probe Wash Control Mode ..........................................................................................72

5.3.17 Relay, Spike Control Mode ..................................................................................................... 73

5.3.18 Relay Output, Flow Proportional Mode ..................................................................................74

5.3.19 Relay or Analog Output, Lag Control Mode ...........................................................................75

5.3.20 Relay, Target PPM Control Mode ........................................................................................... 81

5.3.22 Relay, Flow Proportional Mode ..............................................................................................83

5.3.23 Relay, Counter Timer Control Mode .......................................................................................84

5.3.24 Relay Output, On/Off Disturbance Control Mode ...................................................................84

5.3.25 Relay Output, Volumetric Blending Control Mode ..................................................................85

5.3.26 Relay Output, Flow Meter Ratio Control Mode ......................................................................85

5.3.27 Relay or Analog Output, Disturbance Variable Control Mode ................................................86

5.3.28 Analog Output, Proportional Control Mode ............................................................................87

5.3.29 Analog Output, Flow Proportional Mode ................................................................................88

5.3.30 Analog Output, PID Control Mode ..........................................................................................88

5.3.31 Analog Output, Manual Mode ................................................................................................91

5.3.32 Analog Output, Retransmit Mode ...........................................................................................91

5.4 CongurationMenu ..........................................................................................................................91

5.4.1 Global Settings ................................................................................................................................91

5.4.2 Security Settings ....................................................................................................................92

5.4.3 Ethernet Settings

5.4.4 Ethernet Details ......................................................................................................................93

5.4.5 WiFi Settings ..........................................................................................................................93

5.4.6 WiFi Details ............................................................................................................................94

5.4.7 Remote Communications (Modbus and BACnet) ..................................................................95

5.4.8 Email Report Settings ............................................................................................................95

5.4.9 Display Settings .....................................................................................................................96

5.4.10 File Utilities .............................................................................................................................96

5.4.11 Controller Details ....................................................................................................................97

5.5 HOA Menu ......................................................................................................................................98

5.6 Graph Menu ...................................................................................................................................98

6.0 OPERATION using Ethernet ............................................................................................................99

6.1 Connecting to a LAN ........................................................................................................................99

6.1.1 Using DHCP ...........................................................................................................................99

6.1.2 UsingaxedIPAddress ........................................................................................................99

6.2 Connecting Directly to a Computer ..................................................................................................99

6.3 Navigating the web pages ..............................................................................................................100

6.4 Graphs Webpage ...........................................................................................................................100

7.0 MAINTENANCE .............................................................................................................................101

7.1 .........................................................................................................................................................

Electrode Cleaning .................................................................................................................................101

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7.2 Replacing the Fuse Protecting Powered Relays .....................................................................101

8.0 TROUBLESHOOTING .................................................................................................................102

8.1 Calibration Failure ........................................................................................................................102

8.1.1 Contacting Conductivity Sensors .........................................................................................102

8.1.2 Electrodeless Conductivity Sensors ....................................................................................102

8.1.3 pH Sensors ..........................................................................................................................102

8.1.4 ORP Sensors .......................................................................................................................102

8.1.5 Disinfection Sensors ............................................................................................................103

8.1.6 Analog Inputs ......................................................................................................................103

8.1.7 Temperature Sensors ..........................................................................................................103

8.1.8 Corrosion Inputs ..................................................................................................................103

8.2 Alarm Messages ...........................................................................................................................104

8.3 Procedure for Evaluation of Conductivity Electrode .....................................................................108

8.4 Procedure for Evaluation of the pH/ORP Electrode ....................................................................108

8.5 Diagnostic Lights ........................................................................................................................109

9.0 SparePartsIdentication .............................................................................................................110

10.0 Service Policy ...............................................................................................................................123

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1.0 INTRODUCTION

The Walchem W900 Series controllers offer a high level of exibility in controlling water treatment applications.

• There are four slots that accept a variety of Input/Output Modules, which provides unparalleled versatility. Dual sensor

input modules are available that are compatible with a variety of sensors (two sensors per module):

» Contacting conductivity » Electrodeless conductivity » pH » ORP » Any Walchem disinfection sensor » Generic sensor (Ion Selective Electrodes or any type of sensor with a linear voltage output between -2 VDC

and 2 VDC)

• Three analog (4-20 mA) input modules with two, four or six input circuits is also available for use with 2,3 or

4-wire transmitters.

• Two other modules feature two or four isolated analog outputs that may be installed to retransmit sensor input signals

to a chart recorder, datalogger, PLC or other device. They may also be connected to valves, actuators or metering pumps for linear proportional control or PID control.

• Another module combines two analog (4-20 mA) inputs and four analog outputs.

• Eight Virtual Inputs are congurable in the software, to either allow for calculations based on two real inputs, or to

allow to compare values from two sensors to provide redundancy.

• Eight relay outputs may be set to a variety of control modes:

» On/Off set point control » Time Proportional control » Pulse Proportional control (when purchased with Pulse solid state opto outputs) » Flow Proportional » PID control (when purchased with Pulse solid state opto outputs) » Lead/Lag control of up to 6 relays » Dual set point » Timer » Bleed or Feed based on a Water Contactor or Paddlewheel ow meter input » Feed and Bleed » Feed and Bleed with Lockout » Feed as a percent of Bleed » Feed as a percent of elapsed time » Daily, Weekly, 2-week or 4-week Biocide timers with pre-bleed and post-add lockout of bleed » Intermittent sampling for boilers with proportional blowdown, controlling on a trapped sample » Always on unless interlocked » Probe Wash timer » Spike to alternate set point on timed basis » Target PPM » PPM Volume » Diagnostic Alarm triggered by:

• High or Low sensor reading

• No Flow

• Relay output timeout

• Sensor error

Relays are available in several combinations of powered relays, dry contact relays, and pulse solid state opto relays.

Eight Virtual Outputs are congurable in the software, using most of the possible relay or analog output control algorithms, that may be used to interlock or activate actual control outputs.

The standard Ethernet feature provides remote access to the controller’s programming via a PC connected directly, via

a local area network, or via Walchem’s VTouch account management server. It also allows emailing of datalog les

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(in CSV format, compatible with spreadsheets like Excel) and alarms, to up to eight email addresses. The Modbus TCP and BACnet remote communications options allow communication with PC-based applications, HMI/SCADA programs, Building Energy Management systems, Distributed Control Systems (DCS), as well as stand-alone HMI devices.

Two optional WiFi cards are available, one which allows simultaneous Ethernet and WiFi communications, and one that increases security by disabling Ethernet when WiFi is enabled. The WiFi can be set to Infrastructure Mode to provide all the Ethernet functions above, or Ad-Hoc Mode to allow access to the programming wirelessly.

Our USB features provide the ability to upgrade the software in the controller to the latest version. The Cong le feature allows you to save all the set points from a controller onto a USB ash disk, and then import them into another controller,

making the programming of multiple controllers fast and easy. The data logging feature allows you to save the sensor

readings and relay activation events to a USB ash disk.

2.0 SPECIFICATIONS

2.1 Measurement Performance

pH ORP/ISE

Range -2 to 16 pH units Resolution 0.01 pH units Accuracy ± 0.01% of reading

Range -1500 to 1500 mV Resolution 0.1 mV Accuracy ± 1 mV

Disinfection Sensors

Range (mV) -2000 to 1500 mV Range (ppm) 0-2 ppm to 0-20,000 ppm

Resolution (mV) 0.1 mV Resolution (ppm) Varies with range and slope

Accuracy (mV) ± 1 mV Accuracy (ppm) Varies with range and slope

Temperature Analog (4-20 mA)

Range -4 to 500°F (-20 to 260°C) Range 0 to 22 mA

Resolution 0.1°F (0.1°C) Resolution 0.01 mA

Accuracy ± 1% of reading Accuracy ± 0.5% of reading

Corrosion

Range Resolution

0-2 mpy or mm/year 0.001 mpy or mm/year

0-20 mpy or mm/year 0.01 mpy or mm/year

0-200 mpy or mm/year 0.1 mpy or mm/year

0.01 Cell Contacting Conductivity

Range 0-300 µS/cm

Resolution 0.01 µS/cm, 0.0001 mS/cm, 0.001 mS/m, 0.0001 S/m, 0.01 ppm

Accuracy ± 1% of reading

0.1 Cell Contacting Conductivity

Range 0-3,000 µS/cm

Resolution 0.1 µS/cm, 0.0001 mS/cm, 0.01 mS/m, 0.0001 S/m, 0.1 ppm

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Accuracy ± 1% of reading

1.0 Cell Contacting Conductivity

Range 0-30,000 µS/cm

Resolution 1 µS/cm, 0.001 mS/cm, 0.1 mS/m, 0.0001 S/m, 1 ppm

Accuracy ± 1% of reading

10.0 Cell Contacting Conductivity

Range 0-300,000 µS/cm

Resolution 10 µS/cm, 0.01 mS/cm, 1 mS/m, 0.001 S/m, 10 ppm

Accuracy ± 1% of reading

Electrodeless Conductivity

Range Resolution Accuracy

500-12,000 µS/cm 1 µS/cm, 0.01 mS/cm, 0.1 mS/m, 0.001 S/m, 1 ppm 1% of reading

3,000-40,000 µS/cm 1 µS/cm, 0.01 mS/cm, 0.1 mS/m, 0.001 S/m, 1 ppm 1% of reading

10,000-150,000 µS/cm 10 µS/cm, 0.1 mS/cm, 1 mS/m, 0.01 S/m, 10 ppm 1% of reading

50,000-500,000 µS/cm 10 µS/cm, 0.1 mS/cm, 1 mS/m, 0.01 S/m, 10 ppm 1% of reading

200,000-2,000,000 µS/cm 100 µS/cm, 0.1 mS/cm, 1 mS/m, 0.1 S/m, 100 ppm 1% of reading

Temperature °C Range Multiplier Temperature °C Range Multiplier

0 181.3 80 43.5

10 139.9 90 39.2

15 124.2 100 35.7

20 111.1 110 32.8

25 100.0 120 30.4

30 90.6 130 28.5

35 82.5 140 26.9

40 75.5 150 25.5

50 64.3 160 24.4

60 55.6 170 23.6

70 48.9 180 22.9

Note: Conductivity ranges on page 2 apply at 25°C. At higher temperatures, the range is reduced per the range multiplier chart.

2.2 Electrical: Input/Output

Input Power

Inputs

Sensor Input Signals (0 to 8 depending on model code):

Contacting Conductivity 0.01, 0.1, 1.0, or 10.0 cell constant OR

Electrodeless Conductivity OR

Disinfection OR

Amplied pH, ORP or ISE Requires a preamplied signal. Walchem WEL or WDS series recommended.

100 to 240 VAC, 50 or 60 Hz, 13 A maximum

±5VDC power available for external preamps.

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Each sensor input card contains a temperature input

Temperature 100 or 1000 ohm RTD, 10K or 100K Thermistor

Analog (4-20 mA) Sensor Input (0 to 24 depending on model code):

2-wire loop powered or self-powered transmitters supported 3 or 4 –wire transmitters supported Two to Six channels per board, depending on model Channel 1, 130 ohm input resistance Channel 2-6, 280 ohm input resistance All channels fully isolated, input and power Available Power: One independent isolated 24 VDC ± 15% supply per channel

1.5 W maximum for each channel

Digital Input Signals (12 standard):

State-Type Digital Inputs Electrical: Optically isolated and providing an electrically isolated 12VDC

power with a nominal 2.3mA current when the digital input switch is closed Typical response time: < 2 seconds Devices supported: Any isolated dry contact (i.e. relay, reed switch) Types: DI State

Low Speed Counter-Type Digital Inputs

Electrical: Optically isolated and providing an electrically isolated 12VDC power with a nominal 2.3mA current when the digital input switch is closed 0-20 Hz, 25 msec minimum width Devices supported: Any device with isolated open drain, open collector, transistor or reed switch Types: Contacting Flowmeter, Flow Verify

High Speed Counter-Type Digital Inputs

Electrical: Optically isolated and providing an electrically isolated 12VDC power with a nominal 2.3mA current when the digital input switch is closed, 0-500 Hz, 1.00 msec minimum width Devices supported: Any device with isolated open drain, open collector, transistor or reed switch Types: Paddlewheel Flowmeter

Outputs

Powered mechanical relays (0 to 8 depending on model code):

Dry contact mechanical relays (0 to 8 depending on model code):

Pulse Outputs (0, 2 or4 depending on model code):

4 - 20 mA (0 to 16 depending on model code)

Ethernet

Pre-powered on circuit board switching line voltage. Two, three or four relays are fused together (depending on model code) as one group, total current for this group must not exceed 6 A (resistive), 1/8 HP (93 W)

6 A (resistive), 1/8 HP (93 W) Dry contact relays are not fuse protected

Opto-isolated, Solid State Relay 200mA, 40 VDC Max. VLOWMAX = 0.05V @ 18 mA

Internally powered, 15 VDC, Fully isolated 600 Ohm max resistive load Resolution 0.0015% of span Accuracy ± 0.5% of reading

10/100 802.3-2005 Auto MDIX support Auto Negotiation

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Wi-Fi

Radio Protocol: IEEE 802.11 b/g/n Security Protocols (Ad-Hoc Mode): WPA2-Personal Security Protocols (Infrastructure Mode): WPA/WPA2-Personal, WEP

Certications and Compliance: FCC, IC TELEC, CE/ETSI, RoHS, Wi-Fi Certied

NOTE on Wi-Fi: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

Agency Approvals:

Safety UL 61010-1:2012 3rd Ed.

CSA C22.2 No. 61010-1:2012 3rd Ed. IEC 61010-1:2010 3rd Ed. EN 61010-1:2010 3rd Ed.

EMC IEC 61326-1:2012

EN 61326-1:2013

Note: For EN61000-4-6, EN61000-4-3 the controller met performance criteria B. *Class A equipment: Equipment suitable for use in establishments other than domestic, and those directly connected to a low voltage (100-240 VAC) power supply network which supplies buildings used for domestic purposes.

2.3 Mechanical

Enclosure Material Polycarbonate

Enclosure Rating NEMA 4X (IP65)

Dimensions 12.2” W x 13.8” H x 5.4” D (310 mm x 351 mm x 137 mm)

Display 320 x 240 pixel monochrome backlit display with touchscreen

Operating Ambient Temp -4 to 122 °F (-20 to 50 °C)

Storage Temperature -4 – 176°F (-20 – 80°C)

Humidity 10 to 90% non-condensing

Mechanical (Sensors) (*see graph)

Sensor Pressure Temperature Materials Process Connections

Electrodeless conductivity 0-150 psi (0-10 bar)*

pH 0-100 psi (0-7 bar)* 50-158°F (10-70°C)* CPVC, Glass, FKM

ORP 0-100 psi (0-7bar)* 32-158°F (0-70°C)*

Contacting conductivity (Condensate)

Contacting conductivity Graphite (Cooling Tower)

Contacting conductivity SS (Cooling Tower)

Contacting conductivity (Boiler)

Contacting conductivity (High Pressure Tower)

0-200 psi (0-14 bar) 32-248°F (0-120°C) 316SS, PEEK 3/4” NPTM

0-150 psi (0-10 bar)* 32-158°F (0-70°C)*

0-250 psi (0-17 bar) 32-401°F (0-205°C) 316SS, PEEK 3/4” NPTM

0-300 psi (0-21 bar)* 32-158°F (0-70°C)* 316SS, PEEK 3/4” NPTM

CPVC: 32-158°F (0 to 70°C)* PEEK: 32-190°F (0 to 88°C)

CPVC, FKM in-line o-ring PEEK, 316 SS in-line adapter

o-rings, HDPE, Titanium

rod, glass-lled PP tee

Graphite, Glass-lled PP,

FKM o-ring

316SS, Glass-lled PP,

FKM o-ring

1” NPTM submersion 2” NPTM in-line adapter

1” NPTM submersion 3/4” NPTF in-line tee

3/4” NPTM

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pH (High Pressure) 0-300 psi (0-21 bar)* 32-275°F (0-135°C)*

HP pH/ORP/Steel

ORP (High Pressure) 0-300 psi (0-21 bar)* 32-275°F (0-135°C)*

Free Chlorine/Bromine 0-14.7 psi (0-1 bar) 32-113°F (0-45°C)

Extended pH Range Free Chlorine/Bromine

Total Chlorine 0-14.7 psi (0-1 bar) 32-113°F (0-45°C)

Chlorine Dioxide 0-14.7 psi (0-1 bar) 32-131°F (0-55°C)

Ozone 0-14.7 psi (0-1 bar) 32-131°F (0-55°C)

Peracetic Acid 0-14.7 psi (0-1 bar) 32-131°F (0-55°C)

Hydrogen Peroxide 0-14.7 psi (0-1 bar) 32-113°F (0-45°C)

Corrosion 0-150 psi (0-10 bar) 32-158°F (0-70°C)* Glass-lled PP, FKM o-ring 3/4” NPTM

Flow switch manifold 0-150 psi (0-10 bar) up to 100°F (38°C)*

Flow switch manifold (High Pressure)

0-14.7 psi (0-1 bar) 32-113°F (0-45°C)

32-140°F (0-60°C) GFRPP, PVC, FKM,

0-50 psi (0-3 bar) at 140°F (60°C)

0-300 psi (0-21 bar)* 32-158°F (0-70°C)*

Glass, Polymer, PTFE, 316SS, FKM

Platinum, Polymer, PTFE, 316SS, FKM

PVC, Polycarbonate, silicone rubber, SS, PEEK, FKM, Isoplast

Isoplast

Carbon steel, Brass, 316SS, FKM

1/2” NPTM gland

1/4” NPTF Inlet 3/4” NPTF Outlet

3/4” NPTF

Bar

24.1

20.7

17.2

13.8

PSI

350

300

250

200

Pressure (PSI) vs. Temperature (F)

pH/ORP

LD2

10.3

150

Cond/Corrosion

6.9

3.4

100

110

120

130

140

150

160

170

180

-1.1

4.4

10.0

15.5

21.1

26.6

32.2

37.7

43.3

48.8

54.4

60.0

65.5

71.1

76.6

82.2

HP Cond/Steel

HP pH/ORP/Steel

°F

°C

2.4 Variables and their Limits

Sensor Input Settings Low Limit High Limit

Alarm limits Low end of sensor range High end of sensor range

Input alarm dead band Low end of sensor range High end of sensor range

Cell constant (conductivity only) 0.01 10

Smoothing Factor 0% 90%

Temp Comp Factor (conductivity linear ATC only) 0% 20.000%

Installation Factor (Electrodeless conductivity only) 0.5 1.5

Cable length 0.1 3,000

PPM conversion factor (only if units = PPM) 0.001 10.000

Default temperature -20 500

Deadband Low end of sensor range High end of sensor range

Calibration Required Alarm 0 days 365 days

Sensor Slope (Generic sensor only) -1,000,000 1,000,000

Sensor Offset (Generic sensor only) -1,000,000 1,000,000

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Low Range (Generic sensor, Virtual Input) -1,000,000 1,000,000

High Range (Generic sensor, Virtual Input) -1,000,000 1,000,000

Constant (Virtual Input only) 10% below Low Range setting 10% above High Range setting

Deviation Alarm (Virtual Input) 10% below Low Range setting 10% above High Range setting

4 mA value (Transmitter, AI Monitor analog input only) 0 100

20 mA value (Transmitter, AI Monitor analog input only) 0 100

Max Sensor Range (Fluorometer analog input only) 0 ppb 100,000 ppb

Dye/Product Ratio (Fluorometer analog input only) 0 ppb/ppm 100 ppb/ppm

Set Flow Total (Flowmeter analog input only) 0 1,000,000,000

Flowmeter Max (Flowmeter analog input only) 0 1,000,000

Input Filter (Flowmeter analog input only) 1 mA 21 mA

Totalizer Alarm (Flowmeter analog input only) 0 2,000,000,000

Min Disturbance (Disturbance Virtual Input only) Low end of sensor range High end of sensor range

Max Disturbance (Disturbance Virtual Input only) Low end of sensor range High end of sensor range

Value at Min Disturbance (Disturbance Virtual Input only) 0 100

Value at Max Disturbance (Disturbance Virtual Input only) 0 100

Stabilization Time (Corrosion only) 0 hours 999 hours

Electrode Alarm (Corrosion only) 0 days 365 days

Alloy Multiplier (Corrosion only) 0.2 5.0

Digital ow meter input settings Low Limit High Limit

Totalizer alarm 0 2,000,000,000

Volume/contact for units of Gallons or Liters 1 100,000

Volume/contact for units of m

0.001 1,000

K Factor for units of Gallons or Liters 0.01 100,000

K Factor for units of m

1 1,000,000

Paddlewheel rate alarm limits 0 High end of sensor range

Paddlewheel rate alarm deadband 0 High end of sensor range

Smoothing Factor 0% 90%

Set Flow Total 0 1,000,000,000

Feed Monitor Input Settings Low Limit High Limit

Totalizer Alarm 0 vol. units 1,000,000 vol. units

Set Flow Total 0 vol. units 1,000,000,000 vol. units

Flow Alarm Delay 00:10 Minutes 59:59 Minutes

Flow Alarm Clear 1 Contact 100,000 Contacts

Dead Band 0% 90%

Reprime Time 00:00 Minutes 59:59 Minutes

Volume/Contact 0.001 ml 1,000.000 ml

Smoothing Factor 0% 90%

Counter Input Settings Low Limit High Limit

Totalizer Alarm 0 units 1,000,000 units

Set Total 0 units 1,000,000,000 units

Smoothing Factor 0% 90%

Relay output settings Low Limit High Limit

Output Limit Time 1 second 86,400 seconds (0 = unlimited)

Hand Time Limit 1 second 86,400 seconds (0 = unlimited)

Min Relay Cycle 0 seconds 300 seconds

Set Point Low end of sensor range High end of sensor range

Spike Set Point (Spike mode) Low end of sensor range High end of sensor range

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Onset Time (Spike mode) 0 seconds 23:59:59 HH:MM:SS

Duty Cycle Period (On/Off, Spike, Dual Setpoint modes) 0:00 minutes 59:59 minutes

Duty Cycle (On/Off, Spike, Dual Setpoint modes) 0% 100%

On Delay Time (Manual, On/Off, Dual Setpoint modes) 0 seconds 23:59:59 HH:MM:SS

Off Delay Time (Manual, On/Off, Dual Setpoint modes) 0 seconds 23:59:59 HH:MM:SS

Dead Band Low end of sensor range High end of sensor range

Feed duration (Flow Timer, Counter Timer mode) 0 seconds 86,400 seconds

Accumulator Volume (Flow Timer, Target PPM, PPM

1 1,000,000

Volume, Volumetric Blend, Flow Meter Ratio modes)

Accumulater Setpoint (Counter Timer mode) 1 1,000,000

Feed Percentage (Bleed then Feed mode) 0% 100%

Feed Lockout Time Limit (Bleed & Feed, Bleed then Feed modes) 0 seconds 86,400 seconds

Prebleed To Conductivity (Biocide mode) 1 (0 = no prebleed) High end of sensor range

Prebleed Time (Biocide mode) 0 seconds 86,400 seconds

Bleed Lockout (Biocide mode) 0 seconds 86,400 seconds

Event duration (Biocide, Timer modes) 0 30,000

Proportional band (Time/Pulse Proportional mode,

Low end of sensor range High end of sensor range

Intermittent Sampling)

Sample period (Time Proportional mode) 0 seconds 3600 seconds

Sample Time (Intermittent Sampling mode) 0 seconds 3600 seconds

Hold Time (Probe Wash, Intermittent Sampling modes) 0 seconds 3600 seconds

Maximum Blowdown (Intermittent Sampling mode) 0 seconds 86,400 seconds

Wait Time (Intermittent Sampling mode) 10 pulses/minute 480 pulses/minute

Max Rate (Pulse Proportional, Pulse PID modes, Flow Prop

0% 100%

Modes)

Minimum Output (Pulse Proportional, Pulse PID modes) 0% 100%

Maximum Output (Pulse Proportional, Pulse PID modes) 0% 100%

Gain (Pulse PID Standard mode) 0.001 1000.000

Integral Time (Pulse PID Standard mode) 0.001 seconds 1000.000 seconds

Derivative Time (Pulse PID Standard mode)us 0 seconds 1000.000 seconds

Proportional Gain (Pulse PID Parallel mode) 0.001 1000.000

Integral Gain (Pulse PID Parallel mode) 0.001 /second 1000.000 /second

Derivative Gain (Pulse PID Parallel mode) 0 seconds 1000.000 seconds

Input Minimum (Pulse PID modes) Low end of sensor range High end of sensor range

Input Maximum (Pulse PID modes) Low end of sensor range High end of sensor range

Wear Cycle Time (Lag mode) 10 seconds 23:59:59 HH:MM:SS

Delay Time (Lag mode) 0 seconds 23:59:59 HH:MM:SS

Target (Target PPM, PPM Volume modes) 0 ppm 1,000,000 ppm

Pump Capacity (Target PPM, PPM Volume modes) 0 gal/hour or l/hour 10,000 gal/hour or l/hour

Pump Setting (Target PPM, PPM Volume modes) 0% 100%

Specic Gravity (Target PPM, PPM Volume modes) 0 g/ml 9.999 g/ml

Blend Volume (Volumetric Blend mode) 1 1,000,000

Low Cycles Limit (Target PPM, PPM Volume mode) 0 cycles of concentration 100 cycles of concentration

Bleed Volume (Flow Meter Ratio mode) 1 1,000,000

Pump Capacity (Flow Prop mode) 0 gal/hour or l/hour 10,000 gal/hour or l/hour

Pump Setting (Flow Prop mode) 0% 100%

Specic Gravity (Flow Prop mode) 0 g/ml 9.999 g/ml

Page 14

Target (Flow Prop mode) 0 ppm 1,000,000 ppm

Analog (4-20 mA) Output Settings Low Limit High Limit

4 mA Value (Retransmit mode) Low end of sensor range High end of sensor range

20 mA Value (Retransmit mode) Low end of sensor range High end of sensor range

Hand Output 0% 100%

Set Point (Proportional, PID modes) Low end of sensor range High end of sensor range

Proportional Band (Proportional mode) Low end of sensor range High end of sensor range

Minimum Output (Proportional, PID, Disturbance modes) 0% 100%

Maximum Output (Proportional, PID, Disturbance modes) 0% 100%

Off Mode Output (Proportional, PID, Flow Prop, Disturbance modes)

Error Output (not in Manual mode) 0 mA 21 mA

Hand Time Limit (not in Retransmit mode) 1 second 86,400 seconds (0 = unlimited)

Output Time Limit (Proportional, PID, Disturbance modes) 1 second 86,400 seconds (0 = unlimited)

Gain (PID, Standard mode) 0.001 1000.000

Integral Time (PID Standard mode) 0.001 seconds 1000.000 seconds

Derivative Time (PID Standard mode) 0 seconds 1000.000 seconds

Proportional Gain (PID Parallel mode) 0.001 1000.000

Integral Gain (PID Parallel mode) 0.001 /second 1000.000 /second

Derivative Gain (PID Parallel mode) 0 seconds 1000.000 seconds

Input Minimum (PID modes) Low end of sensor range High end of sensor range

Input Maximum (PID modes) Low end of sensor range High end of sensor range

Pump Capacity (Flow Prop mode) 0 gal/hour or l/hour 10,000 gal/hour or l/hour

Pump Setting (Flow Prop mode) 0% 100%

Specic Gravity (Flow Prop mode) 0 g/ml 9.999 g/ml

Target (Flow Prop mode) 0 ppm 1,000,000 pm

Low Cycles Limit (Flow Proportional mode) 0 cycles of concentration 100 cycles of concentration

Conguration settings Low Limit High Limit

Local Password 0000 9999

VTouch update period 1 minute 1440 minutes

VTouch reply timeout 10 seconds 60 seconds

Alarm Delay 0:00 minutes 59:59 minutes

SMTP Port 0 65535

TCP Timeout 1 second 240 seconds

Auto Dim Time 0 seconds 23:59:59 HH:MM:SS

Device ID (BACnet) 1 4194302

Data Port (Modbus, BACnet) 1 65535

Ad-Hoc Time Limit 1 min. 1440 min.

Graph settings Low Limit High Limit

Low axis limit Low end of sensor range High end of sensor range

High axis limit Low end of sensor range High end of sensor range

0 mA 21 mA

3.0 UNPACKING & INSTALLATION

3.1 Unpacking the unit

Inspect the contents of the carton. Please notify the carrier immediately if there are any signs of damage to the controller or

Page 15

its parts. Contact your distributor if any of the parts are missing. The carton should contain a W900 series controller and an instruction manual. Any options or accessories will be incorporated as ordered.

3.2 Mounting the electronic enclosure

The controller is supplied with mounting holes on the enclosure. It should be wall mounted with the display at eye level, on a vibration-free surface, utilizing all four mounting holes for maximum stability. Use M6 (1/4” diameter) fasteners that are appropriate for the substrate material of the wall. The enclosure is NEMA 4X (IP65) rated. The maximum operating ambient temperature is 122°F (50°C); this should be considered if installation is in a high temperature location. The enclosure requires the following clearances: Top: 2” (50 mm) Left: 10” (254 mm) Right: 4” (102 mm) Bottom: 7” (178 mm)

3.3 Sensor Installation

Refer to the specic instructions supplied with the sensor being used, for detailed installation instructions.

General Guidelines

Locate the sensors where an active sample of water is available and where the sensors can easily be removed for cleaning. Position the sensor such that air bubbles will not be trapped within the sensing area. Position the sensor where sediment or oil will not accumulate within the sensing area.

In-Line Sensor Mounting

In-line mounted sensors must be situated so that the tee is always full and the sensors are never subjected to a drop in water level resulting in dryness. Refer to Figure 2 for typical installation.

Tap off the discharge side of the recirculation pump to provide a minimum ow of 1 gallon per minute through the ow switch manifold. The sample must ow into the bottom of the manifold in order to close the ow switch, and return to a point of lower pressure in order to ensure ow. Install an isolation valve on both sides of the manifold to stop ow for sensor maintenance.

IMPORTANT: To avoid cracking the female pipe threads on the supplied plumbing parts, use no more than 3

wraps of Teon tape and thread in the pipe FINGER tight plus 1/2 turn! Do not use pipe dope to seal the threads of the ow switch because the clear plastic will crack!

Submersion Sensor Mounting

If the sensors are to be submersed in the process, mount them rmly to the tank, and protect the cable with

plastic pipe, sealed at the top with a cable gland, to prevent premature failure. Place the sensors in an area of good solution movement.

Sensors should be located such that they respond rapidly to a well-mixed sample of the process water and the treatment chemicals. If they are too close to the chemical injection point, they will see spikes in concentration and cycle on and off too frequently. If they are too far away from the chemical injection point, they will respond too slowly to the concentration changes, and you will overshoot the set point.

The contacting conductivity sensor should be placed as close to the controller as possible, to a maximum distance of 250 ft. (76 m). Less than 25 ft. (8 m) is recommended. The cable must be shielded from background electrical noise. Always route low voltage (sensor) signals with at least a 6” (15 cm) separation from AC voltage wiring.

The electrodeless conductivity sensor should be placed as close to the controller as possible, to a maximum distance of 120 ft. (37 m). Less than 20 ft. (6 m) is recommended. The cable must be shielded from background electrical noise. Always route low voltage (sensor) signals with at least a 6” (15 cm) separation from AC voltage wiring. These sensors are affected by the geometry and conductivity of their surroundings, so either maintain 6 inches (15 cm) of sample around the sensor or ensure that any nearby conductive or non-conductive items are

consistently positioned. Do not install the sensor in the path of any electrical current that may be owing in the

Page 16

solution, as this will shift the conductivity reading.

The amplied pH/ORP/ISE electrode should be placed as close to the controller as possible, to a maximum distance of 1000 feet (305 m) from the controller. A junction box and shielded cable are available to extend the standard 20 foot (6 m) length. pH and ORP electrodes must be installed such that the measuring surfaces will always

remain wet. A U-trap provided in the manifold design should achieve this, even if the sample ow stops. These

electrodes also must be installed with the measuring surfaces pointing down; that is 5 degrees above the horizontal, at a minimum.

The disinfection sensor should be placed as close to the controller as possible, to a maximum distance of 100 feet (30 m) from the controller. A junction box and shielded cable are available to extend the standard 20 foot (6 m) length. The sensor should be mounted such that the measuring surfaces will always stay wet. If the membrane dries out, it will respond slowly to changing disinfectant values for 24 hours, and if dried out repeatedly, will fail prematurely. The ow cell should be placed on the discharge side of a circulation pump or downhill from a gravity feed. Flow into the cell must come from the bottom side that has the ¾” x ¼” NPT reducing bushing installed.

The reducing bushing provides the ow velocity required for accurate readings and must not be removed! A “U” trap should be installed so that if the ow stops, the sensor is still immersed in the water. The outlet of the ow cell must be plumbed to open atmosphere unless the system pressure is at or below 1 atmosphere. If the ow

through the line cannot be stopped to allow for cleaning and calibration of the sensor, then it should be placed in a by-pass line with isolation valves to allow for sensor removal. Install the sensor vertically, with the measuring surface pointing down, at least 5 degrees above horizontal. Flow rate regulation must be done upstream from the

sensor, because any ow restriction downstream can increase the pressure above atmospheric and damage the membrane cap!

The corrosion sensor should be placed as close to the controller as possible, to a maximum distance of 100 feet (30 m) from the controller. A junction box and shielded cable (p/n 100084) are available to extend the standard 6 foot (3 m) or 20 foot (6 m) length. The sensor should not be installed unless the o-rings/electrodes that match the metallurgy to be examined are attached to the steel threaded rods. Standard corrosion electrodes are 5 cm2 surface area. Do not touch the metal electrodes; they should be clean and free of any scratches, oils or contamination to accurately measure the corrosion. The sensor should be mounted horizontally, such that the measuring surfaces will always stay completely wet. The sensor should ideally be installed in the side branch of a 1” or ¾”

tee, with the ow entering the tee through the top branch and owing away from the base of the sensor, towards the tips of the electrodes. A constant ow rate is required, at a minimum of 1.5 gpm (5.7 lpm) with an ideal ow rate of 5 gpm (19 lpm). If more than one metal is to be used, the most noble metal should be rst.

Important Boiler Sensor Installation Notes: (refer to typical installation drawing)

1. Make sure the minimum water level in the boiler is at least 4-6 inches above the skimmer blowdown line. If the skimmer line is closer to the surface, it is likely that steam will be drawn into the line instead of boiler water. The skimmer line must also be installed above the highest tube.

2. Maintain a 3/4 inch minimum pipe ID with no ow restrictions from the tap for the boiler skimmer blow-

down line to the electrode. If the ID is reduced below 3/4 inch, then ashing will occur beyond that point

and the conductivity reading will be low and erratic. Minimize the usage of tees, valves, elbows or unions between the boiler and the electrode.

3. A manual shut off valve should be installed so that the electrode can be removed and cleaned. This valve must be a full port valve in order to avoid a ow restriction.

4. Keep the distance between the tap for the boiler skimmer line to the electrode as short as possible, to a maximum of 10 feet.

5. Mount the electrode in the side branch of a cross in a horizontal run of pipe. This will minimize entrapment of steam around the electrode and will allow any solids to pass through.

6. There MUST be a ow restriction after the electrode and/or control valve in order to provide back pressure. This ow restriction will be either a ow control valve or an orice union. The amount of the ow restriction will affect the blowdown rate as well, and should be sized accordingly.

Page 17

7. Install the motorized ball valve or solenoid valve per the manufacturer’s instructions.

For best results, align the hole in the conductivity electrode such that the direction of water ow is through the

hole.

Guide to Sizing Blowdown Valves and Orice Plates

1. Determine the Rate of Steam Production in Pounds per Hour:

Either read off the boiler name plate (water-tube boilers) or Calculate from horsepower rating (re-tube

boilers): HP x 34.5 = lbs/hr. Example: 100 HP = 3450 lbs/hr.

2. Determine the Concentration Ratio (BASED ON FEEDWATER) A water treatment chemical specialist should determine the desired number of cycles of concentration. This is the ratio of TDS in the boiler water to TDS in the feedwater. Note that feedwater means the water that is fed to the boiler from the deaerator and includes makeup water plus condensate return. Example: 10 cycles of concentration has been recommended

3. Determine the Required Blowdown Rate in Pounds Per Hour Blowdown Rate = Steam Production / (Concentration Ratio –1) Example: 3450/(10-1) = 383.33 lbs./hr

4. Determine if Continuous or Intermittent Sampling is Required

Use intermittent sampling when the boiler operation or loading is intermittent, or on boilers where the

required blowdown rate is less than 25% of the smallest available ow control valve or less than the ow through the smallest orice. See the graphs on the next page.

Use continuous sampling when the boiler is operating 24 hours per day and the required blowdown rate is

more than 25% of the smallest applicable ow control valve or orice. See the graphs on the next page.

Use of a ow control valve will give you the best control of the process, since the ow rate can be easily adjusted. The dial on the valve also gives you a visual indication if the ow rate has been changed. If the

valve clogs, it can be opened to clear the obstruction, and closed to the previous position.

If an orice plate is used, you must install a valve downstream from the orice in order to ne tune the ow

rate and provide additional back pressure in many applications.

Example: An 80 psi boiler has a Required Blowdown Rate of 383.33 lbs./hr. The maximum ow rate of the

Flow Rate in Lbs/hr for Various Orifices

18000

16000

14000

12000

10000

lbs/hr

8000

6000

1/8 inch dia

3/16 inch dia

1/4 inch dia

5/16 inch dia

4000

2000

10 20 30 40 50 60 70 80 90 100 200 300

Pressure PSI

Page 18

smallest ow control valve is 3250 lbs./hr. 3250 x 0.25 = 812.5 which is too high for continuous sampling. Using an orice, the ow rate through the smallest diameter plate is 1275 lbs./hr. This is too high for continu-

ous sampling.

5. Determine the Orice or Flow Control Valve Size for this Blowdown Rate

Use the following graphs to select a ow control device:

Flow Control Valve

Maximum Flow Rates in Lbs/hr

25000

20000

15000

lbs/hr

10000

5000

20 30 40 50 60 70 80 90 100 150 200 300

3.4 Icon Denitions

Symbol Publication Description

1/2" 150 PSI

1/2" 300 PSI

3/4" 150 PSI

3/4" 300 PSI

Pressure PSI

IEC 417, No.5019 Protective Conductor Terminal

IEC 417, No. 5007 On (Supply)

IEC 417, No. 5008 Off (Supply)

ISO 3864, No. B.3.6 Caution, risk of electric shock

ISO 3864, No. B.3.1 Caution

Page 19

3.5 Electrical installation

The various standard wiring options are shown in gure 1, below. Your controller will arrive from the factory prewired or ready for hardwiring. Depending on your conguration of controller options, you may be required to hardwire some or all of the input/output devices. Refer to gures 6 through 18 for circuit board layout and wiring.

Note: when wiring the optional ow meter contactor input, the 4-20 mA outputs or a remote ow switch, it is advis-

able to use stranded, twisted, shielded pair wire between 22-26 AWG. Shield should be terminated at the controller at the most convenient shield terminal.

CAUTION

1. There are live circuits inside the controller even when the power switch on the front panel is in the OFF posi-

tion! The front panel must never be opened before power to the controller is REMOVED!

If your controller is prewired, it is supplied with an 8 foot, 14 AWG power cord with NEMA 5-15P USA style plug. A tool (#2 Phillips driver) is required to open the front panel.

2. When mounting the controller, make sure there is clear access to the disconnecting device!

3. The electrical installation of the controller must be done by trained personnel only and conform to all applica-

ble National, State and Local codes!

4. Proper grounding of this product is required. Any attempt to bypass the grounding will compromise the safety of persons and property.

5. Operating this product in a manner not specied by Walchem may impair the protection provided by the equip- ment.

Ethernet

Digital Inputs

Sensors

Analog Inputs

Analog Outputs

Sensors

Power IN

Analog inputs

or Analog Outputs

Figure 1 Conduit Wiring

Power switch

Relays

Page 20

HEAT EXCHANGER

METERING PUMPS

COOLING TOWER

Figure 2 Typical Installation – Cooling Tower

Page 21

AC POWER

FLOW OUTFLOW IN

SUBMERSION ELECTRODE

ACID

PROBE

Figure 3 Typical Installation – Submersion

BASE

Page 22

Skimmer Blowdown Line 3/4" Min. up to Electrode

RECOMMENDED INSTALLATION

INTERMITTENT SAMPLING

with minimal valves, elbows & unions

Manual Blowdown (Normally Closed)

10 ft. max.

Full Port Block

Valve

DRAIN

minimum

CONDUCTIVITY

ELECTRODE

¾" TEE

2 ft.

1 to 3 ft.

maximum

Motorized

Ball

or Solenoid

Valve

Flow Control Valve or

Orifice Union

To Drain

Install accessories either vertically or horizontally, per manufacturer's instructions.

Skimmer Blowdown Line 3/4" Min. up to Electrode

Full Port Block

Valve

Manual Blowdown (Normally Closed)

RECOMMENDED INSTALLATION

Flow Control Valve or Orifice Union

ELECTRODE

To Drain

Motorized

Ball

Solenoid

Valve

CONDUCTIVITY

¾" TEE

CONTINUOUS SAMPLING

Flow Control Valve or Orifice Union

To Drain

Figure 4 Typical Installation – Boiler

Page 23

SAMPLE RETURN

1 ATMOSPHERE MAXIMUM

ISOLATION

VALV E

(NORMALLY

OPEN)

ROTAMETER 30-100 LPH

FLOW SWITCH

SENSOR

FLOW CELL

FLOW CONTROL VALV E

SAMPLE VALV E

RECIRCULATION PUMP

PROCESS WATER

Figure 5 Typical Installation – Disinfection Sensor

Page 24

Ethernet

Relay

Terminal

Blocks

Relay

Fuses

(only for models

with powered relay)

Power

Supply

Neutral

Terminal

Block

Earth

Ground

Terminal

Block

Power

Switch

I/O

Slot 4

I/O

Slot 3

I/O

Slot 2

I/O

Slot 1

Display Board

Main Controller/

AC Power

Terminal Block

I/O Slot 1-4

Terminal Blocks

Digital Input

Terminal Blocks

Ribbon Cable

WiFi Board

Battery

RJ45

Figure 6 Parts Identication

I/O Board wiring labels

Page 25

I/O Board wiring labels

I/O Board Part Number

P/N 191910 SENSOR INPUT(2)

13-18

TBxA - SENSOR 1 TBxB - SENSOR 2

ECOND

RCV+

RCV–

XMT+

XMT–

1,2

R-SHLD

TEMP+ TEMP+ TEMP+

TEMP– TEMP– TEMP–

X-SHLD SHIELD SHIELD

CCOND

XMT

RCV

Identification Labels

pH/ORP DIS

+5V

–5V

IN+

IN–

I/O Board P/N

Channel 1

XMT RED

RCV BLACK

TEMP+ GRN

TEMP– WHT

SHIELD

I/O Boards 1 through 4

I/O Board 1-4

Terminal Blocks

Contacting Conductivity (CCOND)

(Wiring is typical of all three sensor options)

Conductivity

Electrode

High Pressure

GRN

WHT

RED

General Purpose

BLK

I/O Board Part Number

P/N 191910 SENSOR INPUT(2)

13-18

TBxA - SENSOR 1 TBxB - SENSOR 2

ECOND

RCV+

RCV–

XMT+

XMT–

1,2

R-SHLD

TEMP+ TEMP+ TEMP+

TEMP– TEMP– TEMP–

X-SHLD SHIELD SHIELD

CCOND

XMT

RCV

Figure 7 Part Number 191910 Dual Sensor Board wiring - Conductivity

pH/ORP DIS

+5V

–5V

IN+

IN–

Channel 2

RCV + RED

RCV – BLK

XMT + WHT

XMT – BLK

R-SHLD

TEMP + GRN

TEMP – BLK

X-SHLD

Notes:

Identify P/N 191910 I/O Board and connect wires to the terminal blocks directly below the I/O slot that the board is in.

Electrodeless Conductivity (ECOND)

Use the wiring label located on the front panel that has a matching I/O part number.

Either channel can support any of the sensor types listed.

Page 26

I/O Board wiring labels

Shields

I/O Board Part Number

P/N 191910 SENSOR INPUT(2)

13-18

I/O Board Part Number

P/N 191910 SENSOR INPUT(2)

13-18

TBxA - SENSOR 1 TBxB - SENSOR 2

ECOND

RCV+

RCV–

XMT+

XMT–

1,2

R-SHLD

TEMP+ TEMP+ TEMP+

TEMP– TEMP– TEMP–

X-SHLD SHIELD SHIELD

TBxA - SENSOR 1 TBxB - SENSOR 2

ECOND

RCV+

RCV–

XMT+

XMT–

1,2

R-SHLD

TEMP+ TEMP+ TEMP+

TEMP– TEMP– TEMP–

X-SHLD SHIELD SHIELD

CCOND

XMT

RCV

CCOND

XMT

RCV

pH/ORP DIS

+5V

–5V

IN+

IN–

pH/ORP DIS

+5V

–5V

IN+

IN–

I/O Board P/N

Identification Labels

+5V BLUE/WHITE

–5V WHITE/BLUE

IN+ ORANGE/WHITE

IN– WHITE/ORANGE

TEMP+ GREEN/WHITE

TEMP– WHITE/GREEN

SHIELD

Notes:

Identify P/N 191910 I/O Board and connect wires to the terminal blocks directly below the I/O slot that the board is in.

Use the wiring label located on the front panel that has a matching I/O part number.

Either channel can support any of the sensor types listed.

+5V BLUE/WHITE

–5V WHITE/BLUE

IN+ ORANGE/WHITE

IN– WHITE/ORANGE

SHIELD

I/O Boards 1 through 4

I/O Board 1-4

Terminal Blocks

pH/ORP/ISE Sensor with Optional Temperature Compensation

pH/ORP/ISE Sensor without Optional Temperature Compensation

Figure 8 Part Number 191910 Dual Sensor Board Wiring - pH/ORP/ISE

Page 27

I/O Board wiring labels

Shields

I/O Board Part Number

P/N 191910 SENSOR INPUT(2)

13-18

I/O Board Part Number

P/N 191910 SENSOR INPUT(2)

13-18

TBxA - SENSOR 1

TBxB - SENSOR 2

ECOND

RCV+

RCV–

XMT+

XMT–

1,2

R-SHLD

TEMP+ TEMP+ TEMP+

TEMP– TEMP– TEMP–

X-SHLD SHIELD SHIELD

TBxA - SENSOR 1 TBxB - SENSOR 2

ECOND

RCV+

RCV–

XMT+

XMT–

1,2

R-SHLD

TEMP+ TEMP+ TEMP+

TEMP– TEMP– TEMP–

X-SHLD SHIELD SHIELD

CCOND

XMT

RCV

CCOND

XMT

RCV

pH/ORP DIS

+5V

–5V

IN+

IN–

pH/ORP DIS

+5V

–5V

IN+

IN–

I/O Board P/N

Identification Labels

+5V RED

-5V BLK

IN+ GRN IN– WHT

SHIELD

Notes:

Identify P/N 191910 I/O Board and connect wires to the terminal blocks directly below the I/O slot that the board is in.

Use the wiring label located on the front panel that has a matching I/O part number.

Either channel can support any of the sensor types listed.

+5V RED

-5V BLK

IN+ GRN

IN– WHT

SHIELD

I/O Boards 1 through 4

I/O Board 1-4

Terminal Blocks

Disinfection Sensor

Figure 9 Part Number 191910 Dual Sensor Board Wiring - Disinfection

Page 28

I/O Board wiring labels

I/O Board Part Number

P/N 191912 4-20 mA INPUT (2)

2 Wire

TB Ch 4 Wire 3 Wire

XMTR– XMTR+ XMTR+

13-18

I/O Board Part Number

P/N 191912 4-20 mA INPUT (2)

13-18

TBxA - INPUTS 1-2

TBxB - NOT USED

2 Wire

TB Ch 4 Wire 3 Wire

Pwrd

Loop

XMTR–

XMTR– XMTR+ XMTR+

+24V +24V+24V

XMTR–

XMTR– XMTR+ XMTR+

+24V +24V +24V

TBxA - INPUTS 1-2

TBxB - NOT USED

2 Wire

Pwrd

Loop

XMTR–

+24V +24V+24V

XMTR–

+24V +24V +24V

XMTR–

XMTR+

COM(–)

24V(–)

XMTR–

XMTR+

COM(–)

24V(–)

XMTR+

COM(–)

XMTR+

COM(–)

XMTR–

24V(–)

XMTR–

24V(–)

Channel 1

Channel 2

Shields

I/O Board P/N

Identification Labels

Channel 1

–

Channel 2

Shields

+ SIGNAL

24V POWER

– COMMON

- SIGNAL

+ SIGNAL

+24V POWER

–24V POWER

I/O Boards 1 through 4

– +

POWERED 2 WIRE

4-20mA SOURCE

•SIMULATOR

•POWERED 4-20mA

OUTPUT

UNPOWERED

4 WIRE TRANSMITTER

LITTLE DIPPER 2

BRN

ORN

RED BLK

I/O Board 1-4

Terminal Blocks

UNPOWERED

2 WIRE

LOOP POWERED

TRANSMITTER

UNPOWERED

3 WIRE

TRANSMITTER

Notes:

Identify P/N 191912 I/O Board and connect wires to the terminal blocks directly below the I/O slot that the board is in.

Use the wiring label located on the front panel that has a matching I/O part number.

Either channel can support any of the sensor types listed.

To program the analog input, go to the Inputs menu, enter the menu for the I/O slot# and channel# (for example S21). Scroll to Transmitter and select the type of transmitter from the list.

Figure 10 Part Number 191912 Dual Analog (4-20mA) Sensor Input Board Wiring

Page 29

I/O Board wiring labels

Shields

I/O Board Part Number

P/N 191913 4-20 mA INPUT (4)

TB Ch 4 Wire 3 Wire

13-18

TBxA - INPUTS 1-3

TBxB - INPUT 4

2 Wire

Pwrd

Loop

1,4

XMTR–

XMTR– XMTR+ XMTR+

+24V +24V+24V

XMTR–

XMTR– XMTR+ XMTR+

+24V +24V +24V

XMTR–

XMTR– XMTR+ XMTR+

+24V +24V +24V

XMTR+

COM(–)

XMTR+

COM(–)

XMTR+

COM(–)

XMTR–

24V(–)

XMTR–

24V(–)

XMTR–

24V(–)

I/O Board Part Number

P/N 191913 4-20 mA INPUT (4)

TBxA - INPUTS 1-3

TBxB - INPUT 4

2 Wire

TB Ch 4 Wire 3 Wire

1,4

Pwrd

Loop

XMTR–

XMTR– XMTR+ XMTR+

+24V +24V+24V

XMTR– XMTR+ XMTR+

+24V +24V +24V

XMTR– XMTR+ XMTR+

+24V +24V +24V

XMTR+

COM(–)

XMTR–

XMTR+

COM(–)

XMTR–

XMTR+

COM(–)

XMTR–

24V(–)

XMTR–

24V(–)

XMTR–

24V(–)

I/O Board P/N

Identification Labels

Channel 1

–

Channel 2

+ SIGNAL

24V POWER

– COMMON

Channel 3

Shields

+ SIGNAL

+24V POWER

–24V POWER

Channel 4

– +

- SIGNAL

I/O Boards 1 through 4

UNPOWERED

3 WIRE

TRANSMITTER

UNPOWERED

4 WIRE

TRANSMITTER

LITTLE DIPPER 2

I/O Board 1-4

Terminal Blocks

POWERED 2 WIRE

4-20mA SOURCE

•SIMULATOR

•POWERED 4-20mA

OUTPUT

BRN ORN RED BLK

UNPOWERED

2 WIRE

LOOP POWERED

TRANSMITTER

Notes:

Identify P/N 191913 I/O Board and connect wires to the terminal blocks directly below the I/O slot that the board is in.

Use the wiring label located on the front panel that has a matching I/O part number.

Either channel can support any of the sensor types listed.

To program the analog input, go to the Inputs menu, enter the menu for the I/O slot# and channel# (for example S21). Scroll to Transmitter and select the type of transmitter from the list.

Figure 11 Part Number 191913 Four Analog (4-20mA) Sensor Input Board Wiring

Page 30

I/O Board wiring labels

Shields

I/O Board Part Number

P/N 191914 4-20 mA INPUT (6)

13-18

I/O Board Part Number

P/N 191914 4-20 mA INPUT (6)

TB Ch 4 Wire 3 Wire

13-18

TBxA - INPUTS 1-3 TBxB - INPUTS 4-6

2 Wire

TB Ch 4 Wire 3 Wire

1,4

2,5

3,6

1,4

2,5

3,6

Pwrd

Loop

XMTR–

XMTR– XMTR+ XMTR+

+24V +24V+24V

XMTR– XMTR+ XMTR+

+24V +24V +24V

XMTR– XMTR+ XMTR+

+24V +24V +24V

TBxA - INPUTS 1-3

TBxB - INPUTS 4-6

2 Wire

Loop

XMTR– XMTR+ XMTR+

+24V +24V+24V

XMTR– XMTR+ XMTR+

+24V +24V +24V

XMTR– XMTR+ XMTR+

+24V +24V +24V

XMTR–

2 Wire

Pwrd

XMTR–

XMTR+

COM(–)

XMTR+

COM(–)

XMTR+

COM(–)

XMTR+

COM(–)

XMTR+

COM(–)

XMTR+

COM(–)

XMTR–

24V(–)

XMTR–

24V(–)

XMTR–

24V(–)

XMTR–

24V(–)

XMTR–

24V(–)

XMTR–

24V(–)

I/O Board P/N

Identification Labels

Channel 1

Channel 2

24V POWER

– COMMON

Channel 3

- SIGNAL

+ SIGNAL

+24V POWER

Channel 4 Shields

Channel 5Channel 6

–24V POWER

– +

+ SIGNAL

– +

UNPOWERED

TRANSMITTER

I/O Boards 1 through 4

POWERED 2 WIRE

4-20mA SOURCE

•SIMULATOR

•POWERED 4-20mA

OUTPUT

3 WIRE

UNPOWERED

4 WIRE

TRANSMITTER

LITTLE DIPPER 2

I/O Board 1-4

Terminal Blocks

Notes:

Identify P/N 191914 I/O Board and connect wires to the terminal blocks directly below the I/O slot that the board is in.

Use the wiring label located on the front panel that has a matching I/O part number.

BRN ORN RED BLK

Either channel can support any of the sensor types listed.

To program the analog input, go to the Inputs menu, enter the menu for the I/O slot# and channel# (for example S21). Scroll to Transmitter and select the type of transmitter from the list.

UNPOWERED

2 WIRE

LOOP POWERED

TRANSMITTER

Figure 12 Part Number 191914 Six Analog (4-20mA) Sensor Input Board Wiring

Page 31

I/O Board wiring labels

I/O Board Part Number

P/N 191915 4-20 mA OUTPUT (2)

TB Ch

13-18

TBxA - OUTPUTS 1-2

TBxB - NOT USED

Out

4-20 mA

Output

OUT–

OUT+

OUT–

OUT+

I/O Board P/N

Identification Labels

Channel 1

Channel 2

I/O Boards 1 through 4

–

SHIELD

–

SHIELD

I/O Board 1-4

Terminal Blocks

Chart Recorder, PLC, etc.

Notes:

Identify P/N 191915 I/O Board and connect wires to the terminal blocks directly below the I/O slot that the board is in.

Use the wiring label located on the front panel that has a matching I/O part number.

Either channel can support any of the sensor types listed.

Each analog output is internally powered, 15 VDC, fully isolated.

Figure 13 Part Number 191915 Dual Analog (4-20mA) Output Wiring

Page 32

I/O Board wiring labels

I/O Board Part Number

P/N 191916 4-20 mA OUTPUT (4)

13-18

I/O Board Part Number

P/N 191916 4-20 mA OUTPUT (4)

13-18

TB Ch

Out

1,3

Out

2,4

1,3

2,4

TBxA - OUTPUTS 1-2 TBxB - OUTPUTS 3-4

4-20 mA

Output

OUT–

OUT+

OUT–

OUT+

4-20 mA

Output

OUT–

OUT+

OUT–

OUT+

I/O Board P/N

Identification Labels

SHIELD

Channel 1Channel 2

SHIELD

Channel 3Channel 4

SHIELD

12 13

I/O Boards 1 through 4

I/O Board 1-4

Terminal Blocks

–

Chart Recorder, PLC, etc.

Notes:

Identify P/N 191916 I/O Board and connect wires to the terminal blocks directly below the I/O slot that the board is in.

Use the wiring label located on the front panel that has a matching I/O part number.

Either channel can support any of the sensor types listed.

Each analog output is internally powered, 15 VDC, fully isolated.

– +

Chart Recorder, PLC, etc.

Figure 14 Part Number 191916 Four Analog (4-20mA) Output Wiring

Page 33

I/O Board P/N

Identification Labels

I/O Boards 1 through 4

I/O Board wiring labels

I/O Board Part Number

P/N 191918 4-20 mA INPUT (2)/OUTPUT (4)

TBxA - INPUT 1, OUTPUTS 1-2 TBxB - INPUT 2, OUTPUTS 3-4

2 Wire

TB Ch 4 Wire

1,2

Out

1,3

Out

2,4

13-18

Pwrd

Loop

XMTR–

XMTR+XMTR– XMTR+ XMTR+

3 Wire

+24V+24V +24V

COM(–) 24V(–)

I/O Board Part Number

P/N 191918 4-20 mA INPUT (2)/OUTPUT (4)

TBxA - INPUT 1, OUTPUTS 1-2 TBxB - INPUT 2, OUTPUTS 3-4

2 Wire

TB Ch 4 Wire

1,2

Out

1,3

Out

2,4

13-18

Pwrd

Loop

XMTR–

XMTR+XMTR– XMTR+ XMTR+

3 Wire

+24V+24V +24V

COM(–) 24V(–)

Notes:

XMTR–

4-20 mA

Output

OUT–

OUT+

OUT–

OUT+

4-20 mA

Output

OUT–

OUT+

OUT–

OUT+

Input

Channel 1

Output

Channel 1

Output

Channel 2

Input

Channel 2

Output

Channel 3

Output

Channel 4

See 191913 wiring instructions for details

–

SHIELD

–

SHIELD

See 191913 wiring instructions for details

–

SHIELD

–

SHIELD

12 13

Chart Recorder, PLC, etc.

I/O Board 1-4

Terminal Blocks

Chart Recorder, PLC, etc.

Identify P/N 191918 I/O Board and connect wires to the terminal blocks directly below the I/O slot that the board is in.

Use the wiring label located on the front panel that has a matching I/O part number.

Either channel can support any of the sensor types listed.

Each analog output is internally powered, 15 VDC, fully isolated.

To program the analog input, go to the Inputs menu, enter the menu for the I/O slot# and channel# (for example S21). Scroll to Transmitter and select the type of transmitter from the list.

Figure 15 Part Number 191918 Dual Analog (4-20mA) Input + Four Analog (4-20mA) Output Wiring

Page 34

I/O Board Part Number

P/N 191920 CORROSION INPUT(2)

13-18

1,2

TBxA - SENSOR 1 TBxB - SENSOR 2

CORROSION

XMT (Red)

RCV (Green)

MON RCV (Black)

MON XMT (White)

SHIELD

I/O Board wiring labels

Channel 1

I/O Board P/N

Identification Labels

XMT RED RCV GRN MON RCV BLK

MON XMT WHT

I/O Boards 1 through 4

Terminal Blocks

SHIELD

I/O Board 1-4

I/O Board Part Number

P/N 191920 CORROSION INPUT(2)

13-18

1,2

TBxA - SENSOR 1 TBxB - SENSOR 2

CORROSION

XMT (Red)

RCV (Green)

MON RCV (Black)

MON XMT (White)

SHIELD

Notes:

Identify P/N 191920 I/O Board and connect wires to the terminal blocks directly below the I/O slot that the board is in. Use the wiring label located on the front panel that has a matching I/O part number. Either channel can support any of the sensor types listed.

Figure 16 Part Number 191920 Dual Corrosion Sensor Input Board Wiring

Channel 2

XMT RED

RCV GRN

MON RCV BLK

MON XMT WHT

SHIELD

Page 35

D1+

D1–

D2+

D2–

12V

D3+

D3–

D4+

D4–

12V

D5+

D5–

SIGNAL

IN –

POWER +12V

Reed Switch

FLOW METER

Polarity not Critical

Hall Effect

FLOW METER

FLOW SWITCH

Contact Closure:

Polarity not critical

D6+

D6–

12V

D7+

D7–

D8+

D8–

12V

D9+

D9–

D10+

D10–

12V

D11+

D11–

D12+

D12–

12V

TBDI

Figure 17 Digital Input Wiring

Page 36

Relay Model Code R1 R2 R3 R4 R5 R6 R7 R8

900 Powered Powered Powered Powered Powered Powered Powered Powered 910 Powered Powered Powered Powered Powered Powered Powered Dry 920 Dry Dry Dry Dry Dry Dry Pulse Pulse 930 Powered Powered Dry Dry Powered Powered Dry Dry 940 Dry Dry Pulse Pulse Dry Dry Pulse Pulse 950 Powered Powered Pulse Pulse Powered Powered Pulse Pulse 960 Powered Powered Powered Powered Powered Powered Pulse Pulse 970 Dry Dry Dry Dry Dry Dry Dry Dry

GRN 120V

GRN/YEL 240V

WHT 120V BLU 240V

TB11

WHT 120V

Fused

External

BLK

WHT

BRN

BLU

TB9

TB11

GRN

GRN/YEL

POWER SUPPLY

(100 TO 240V)

Power

Source

BLU 240V

GRN 120V

GRN/YEL 240V

BLK 120V BRN 240 V

External

AC Power

TB10

If motorized ball valve

BLK 120V BRN 240 V

–

Figure 18 AC Power & Relay Output Wiring

Page 37

4.0 FUNCTION OVERVIEW

4.1 Front Panel

Figure 19 Front Panel

4.2 Touchscreen

A Home screen is displayed while the controller is on. This display shows a user-dened list of input readings or status

of outputs. Touching any of the items on the Home Screen will bring up the item’s Details Screen, where you can access calibration and setting menus. If more than four items have been selected to be displayed on the Home screen, the display

will toggle between the rst group of up to four and the next group. A “pause button” icon, when touched, stops the

automatic toggling. Touching the down arrow icon allows for manual toggling. Touching the “play button” icon enables automatic toggling again. Touching the Menu icon brings up the Main Menu screen.

4.3 Icons

The following icons appear on the Home screen.

The Main Menu icon brings you to the list of menu options listed below.

The following icons appear on the Main Menu screen. Touch the icon to get to the menu selections.

Alarm Menu

Inputs Menu

Page 38

Outputs Menu

Conguration Menu

HOA Menu

Graph Menu

Home Page

Other icons may appear in the menu screens.

Calibration icon appears in sensor input menus and brings up the calibration menu

Cancel icon aborts a calibration or setting change

The Page Down icon scrolls down to a new page in a list of options.

The Page Up icon scrolls up to a new page in a list of options.

The Back/Return icon returns the display to the previous screen

The Make Character Higher icon is used when making an alphanumeric entry

The Make Character Lower icon is used when making an alphanumeric entry

The Move Cursor icon is used to scroll left to right within an alphanumeric entry

The Conrm icon accepts a choice, nishes entering data, or advances to the next calibration step

Settings Menu

The Character Delete icon deletes part of an alphanumeric entry

The Shift icon switches between upper and lower case alpha entry screens

The Next Screen icon moves to the next step in a calibration sequence. In a Graph it shifts the graph forward in time.

The Previous Screen icon moves back a step in a calibration sequence. In a Graph it shifts the graph backwards in time.

Page 39

Overview of the use of icons

Changing Numeric Values

To change a number, use the Character Delete icon to the digit to be changed. If the new number will be negative, start with touching the minus sign, then use the numeric touchpad and decimal point to type the number (some entries must be integers and the decimal will be ignored and the setting rounded to the nearest integer).

Once the value of the number is correct touch the Conrm icon to store the new value into memory, or touch the

Cancel icon to leave the number at its previous value and go back.

Changing Names

To change the name used to identify an input or output, use the Move Cursor icon to the character to be changed and change it using either the Make Character Higher or Lower icons. Upper case and lower case letter, numbers, a blank space, period, plus and minus symbols are available. Move the cursor to the right and modify each character. Once the word is correct, use the Enter icon to store the new value into memory, or use the Cancel icon to leave the word at its previous value and go back.

Choosing from a List

Selecting the type of sensor, the units of measure of an input, or the control mode used for an output, the selec-

tion is picked from a list of available options. Touch the Page Up or Down icons if necessary to nd the desired option, and then touch the option to highlight it. Touch the Conrm icon to store the new option into memory, or

touch the Cancel icon to leave the selection at its previous value and go back.

Hand-Off-Auto Relay Mode

Touch the desired relay mode. In Hand mode the relay is forced on for a specied amount of time and when that

time is up the relay returns to its previous mode, in Off mode the relay is always off until taken out of Off mode, and in Auto mode the relay is responding to control set points. Touch the Return icon to go back to the relay settings.

Interlock and Activate with Channels Menus

To select which digital inputs or relays will interlock this relay (Interlock Channels), or which digital inputs or relays will force this relay on (Activate with Channels), touch the input or relay number(s). The background of

the selected item will turn dark. When nished selecting as many as needed, touch the Conrm icon to accept the

changes or the Cancel icon to leave the selections at the previous settings and go back.

4.4 Startup

Initial Startup

After having mounted the enclosure and wired the unit, the controller is ready to be started. Plug in the controller

and turn on the power switch to supply power to the unit. The display will briey show the model number and then

revert to the normal summary (Home) display. Refer to section 5 below for more details on each of the settings.

To return to the summary display, touch the Main Menu icon

and then touch the Home icon.

Cong Menu (see section 5.4)

Choose language

Touch the Conguration Settings icon. Touch Global Settings. Touch the Scroll Down icon until the English

word “Language” is displayed and then touch it. Touch the Scroll Down icon until your language is displayed

and touch it. Touch the Conrm icon to change all menus to your language.

Set date (if necessary)

Touch the Scroll Up or Down icon until Date is displayed, and then touch it. Touch the Move Cursor icon to

highlight the Day, and then use the numeric touchpad to change the date. Touch the Conrm icon to accept the

change.

Set time (if necessary)

Touch the Scroll Up or Down icon until Time is displayed and then touch it. Touch the Move Cursor icon to

highlight the digit to change, then use the numeric touchpad to change the time. Touch the Conrm icon to accept

the change.

Page 40

Set global units of measure

Touch the Scroll Up or Down icon until Global Units is displayed and then touch it. Touch the desired units.

Touch the Conrm icon to accept the change.

Set temperature units of measure

Touch the Scroll Up or Down icon until Temp Units is displayed and then touch it. Touch the desired units.

Touch the Conrm icon to accept the change.

Touch the Main Menu icon. Touch the Inputs icon.

Inputs (see section 5.2)

Program the settings for each input

The S11 sensor input will be displayed. Touch it to get to the Details screen. Touch the Settings icon. If the name of the sensor does not describe the type of sensor connected, touch the Scroll Down icon until Type is displayed.

Touch the Type eld. Touch the Scroll Down icon until the correct type of sensor is displayed, then touch it to highlight it. Touch the Conrm icon to accept the change. This will bring you back to the Settings screen. Finish

the rest of the S1 settings. For disinfections sensors, choose the exact sensor in the Sensor menu. For contacting conductivity sensors, enter the cell constant. Select the units of measure. Enter the alarm set points and alarm deadband. Set the default temperature that will be used for automatic temperature compensation if the temperature signal becomes invalid.

When nished with S11, touch the Return icon until the list of inputs is displayed. Touch the Scroll Down icon

and repeat the process for each input.

The S12 temperature input Element should be set correctly once the S11 sensor type has been set. If not, select the correct temperature element and set the alarm set points and alarm deadband. Generic, ORP and disinfection sensors do not have temperature signals and are preset to Unassigned.

To calibrate the temperature, return to the S12 Details screen, touch the Calibrate icon, and touch the Enter icon to perform a calibration. If either input card is a Dual Analog Input card (4-20mA signal), then select the type of sensor that will be connected. Select Fluorometer if a Little Dipper 2 will be connected. Select AI Monitor if the device can be calibrated on its own and the W900 calibration will only be in units of mA. Select Transmitter if the device connected cannot be calibrated on its own and the W900 will need to be used to calibrate in engineering units of measure.

If a ow switch or liquid level switch is connected, D1 through D12 (whichever one has the device connected

to it) should be set to DI State type (if no switch is connected, select No Sensor). Set the state that will possibly interlock control outputs (refer to the Outputs settings to program which outputs, if any, will be interlocked by the switch). Set the state, if any, that will result in an alarm.

If a contacting head or paddlewheel ow meter is connected, D1 through D12 (whichever one has the device connected to it) should be set to that type (if no ow meter is connected, select No Sensor). Set the units of mea-

sure, volume/contact or K factor, etc.

Calibrate the sensor

To calibrate the sensor, return to the list of inputs, touch the sensor to calibrate, touch the Calibrate icon, and select one of the calibration routines. For disinfection and Generic sensors, start with the Zero Calibration. For electrodeless conductivity, start with the Air Calibration. Refer to section 5.2.

Touch the Main Menu icon. Touch the Outputs icon.

Page 41

Inputs

Sensor (S11) 3038 µS/cm

Temp (S12) 77.1°F

Generic AI (S21) 30.5%

Generic AI (S22) 37.9%

MAIN MENU/HOME SCREEN OVERVIEW

List of possible Inputs: Contacting Conductivity Electrodeless Conductivity Temperature pH ORP Disinfection Generic Transmitter/AI Monitor Fluorometer Flowmeter, Analog Type DI State Flow Meter, Contactor type Flow Meter, Paddlewheel type Feed Monitor Counter Virtual Input Corrosion Rate Corrosion Imbalance

Outputs

On/Off (R1) Off

Flow Timer (R2) Off

Flow Timer (R3) Off

Manual (R4) Off

List of possible Outputs:

On/O control mode On/O Disturbance control mode Flow Timer control mode Bleed & Feed control mode Bleed Then Feed control mode Percent Timer control mode Biocide Timer control mode Alarm Output mode Time Proportional control mode Flow Proportional control mode Pulse Proportional control mode Pulse Proportional Disturbance control mode Intermittent Sampling mode Manual control mode PID control mode Dual Setpoint mode Timer control mode Probe Wash control mode Spike control mode Lag Output control mode Target PPM PPM Volume Flow Meter Ratio control mode Volumetric Blend control mode Counter Timer Analog Ouput, Retransmit mode Analog Output, Proportional control mode Analog Output, PID control mode Analog Output, Manual mode Analog Output, Flow Proportional mode Analog Output, Disturbance Mode

Alarms

List of all Active Alarms

HOME SCREEN (example)

Flowswitch (D1) No Flow

SENSOR (S1)

CCond (S11) 3041 µS/cm

Temp (S12) 77.0°F

Flowswitch (D1) No Flow

MAIN MENU

Main Menu 09:19:01 14-Mar-2017

Inputs

Outputs

Alarm

Config

HOA

Graph

To HOME SCREEN

Graph Settings

SENSOR (S1)

Sensor

DI Relay

Low Axis Limit

High Axis Limit

Additional Graph Settings:

Time Range

Config

Global Settings

Security Settings

Ethernet Settings

Ethernet Details

Additional Config Settings: WiFi Settings WiFi Details Remote Communications (Modbus)/BACnet) Email Report Settings Display Settings File Utilities Controller Details

> HOA

R1 R2 R3

R5 R6 R7

Hand

CCond (S11) On/Off (R2)

µS/cm

Off

3036

3035

3034

3033

3032

3031

10.35 10.40 10.4514-Nov

Time Range

SENSOR (S1)

10 Minutes

30 Minutes

1 Hour

2½ Hours

More possible settings:

8 Hours 1 Week 12 Hours 2 Weeks 1 Day 4 Weeks ½ Week

Auto

Minutes



Page 42

Inputs

Sensor (S11) 3038 µS/cm

Temp (S12) 77.1°F Generic AI (S21) 30.5% Generic AI (S22) 37.9%

Main Menu 09:19:01 14-Mar-2017

Inputs

Outputs

Alarms

Config

HOA

Graph

> Calibration

SENSOR (S1)

One Point Process Calibration One Point Buffer Calibration Two Point Buffer Calibration Three Point Buffer Calibration One Point Analog Calibration Two Point Analog Calibration Open Air Calibration (Cond) Zero Calibration (Disinfection)

Contacting Cond S11-43

Alarms Deadband Reset Calibration Values Cal Required Alarm

Electrodeless Cond S11-43

Alarms Deadband Reset Calibration Values Cal Required Alarm

Temperature S11-43

SENSOR (S1)

Alarms Deadband Reset Calibration Values Cal Required Alarm

Additional Settings for Contacting Conductivity:

Alarm Suppression Smoothing Factor Default Temp Temp Compensation Temp Comp Factor Cell Constant

Additional Settings for Electrodeless Conductivity:

Alarm Suppression Smoothing Factor Default Temp Installation Factor Range Temp Compensation Temp Comp Factor

Additional Settings for Temperature Sensor:

Alarm Suppression Smoothing Factor Name Element

Cable Length Gauge Units Name Type

Cell Constant Cable Length Gauge Units Name Type

INPUTS

Inputs>Sensor (S11)

Details Screen

Content varies with

sensor type

Fluorometer

Alarms Deadband Reset Calibration Values Cal Required Alarm

Flowmeter

Alarms Deadband Reset Flow Total Set Flow Total

Calculation (V1-V8)

Alarms Deadband Input Constant

S11-S46

Additional Settings for Fluorometer:

Alarm Suppression Smoothing Factor Transmitter Max Sensor Range

Additional Settings for Flowmeter:

Scheduled Reset Reset Calibration Values Cal Required Alarm Alarm Suppression Smoothing Factor Transmitter

Additional Settings for Calculation:

Input 2 Constant 2 Calculation Mode Alarm Suppression Low Range

Dye / Product Ratio Name Type

High Range Smoothing Factor Name Type

Flow Units Rates Units Flowmeter Max Input Filter Name Type

pH S11-43

SENSOR (S1)

Alarms Deadband Reset Calibration Values Cal Required Alarm

ORP S11-43

SENSOR (S1)

Alarms Deadband Reset Calibration Values Cal Required Alarm

Disinfection S11-43

SENSOR (S1)

Alarms Deadband Reset Calibration Values Cal Required Alarm

Generic S11-43

SENSOR (S1)

Alarms Deadband Reset Calibration Values Cal Required Alarm

Transmitter / AI Monitor S11-S46

Alarms Deadband Reset Calibration Values Cal Required Alarm

Additional Settings for pH Sensor:

Alarm Suppression Smoothing Factor Buffers (pH only) Default Temp Cable Length

Additional Settings for ORP Sensor:

Alarm Suppression Smoothing Factor Cable Length Gauge

Additional Settings for Disinfection Sensor:

Alarm Suppression Smoothing Factor Cable Length Gauge Name Sensor Type

Additional Settings for Generic Sensor:

Alarm Suppression Smoothing Factor Sensor Slope Sensor Offset Low / High Range Cable Length

Additional Settings for Transmitter and AI Monitor:

Alarm Suppression Smoothing Factor Transmitter 4 mA Value

Gauge Electrode Name Type

Name Type

Gauge Units Electrode (Linear or Ion Selective) Name Type

20 mA Value Units Name Type

Redundant (V1-V8)

SENSOR (S1)

Deviation Alarm Deadband Alarm Suppression Mode

Raw Value (V1-V8)

SENSOR (S1)

Alarms Deadband Alarm Suppression Input

Disturbance Input (V1-V8)

SENSOR (S1)

Min Disturbance Max Disturbance Value at Min Disturbance Value at Max Disturbance

SENSOR (S1)

Corrosion

Alarms Deadband Replace Corrosion Electrode Stabilization Time

Imbalance

Alarms Deadband Alarm Suppression Reset Calibration Values

S11-S41

S12-S44

Additional Settings for Redundant:

Input Input 2 Name Type

Additional Settings for Raw Value:

Smoothing Factor Name Type

Additional Settings for Disturbance:

Smoothing Factor Alarm Suppression Disturbance Input Name Type

Additional Settings for Corrosion:

Electrode Alarm Alarm Suppression Reset Calibration Values Cal Required Alarm Smoothing Factor Alloy Multiplier

Additional Settings for Imbalance:

Cal Required Alarm Name Type

Cycle Time Range Units Name Type

VIRTUAL INPUTS

Page 43

Open Message Closed Message Interlock Alarm

Feed Monitor (D1-D12)

SENSOR (S1)

Totalizer Alarm Reset Flow Total Set Flow Total Scheduled Reset

DI State (D1-D12)

SENSOR (S1)

Flowmeter (D1-D12)

SENSOR (S1)

Alarms Deadband Set Flow Total Scheduled Reset

Flowmeter (D1-D12)

SENSOR (S1)

Totalizer Alarm Reset Flow Total Set Flow Total Scheduled Reset

SENSOR (S1)

Contactor Type

Paddlewheel Type

SENSOR (S1)

Only if HVAC mode is disabled

Additional Settings for DI State:

Totalizer Alarm Reset Flow Total K Factor Flow Units Rate Units Smoothing Factor Name Type

Additional Settings for Paddlewheel, Flowmeter:

Additional Settings for Feed Monitor:

Total Time Reset Time Total Name Type

Additional Settings for Contactor, Flowmeter:

Volume/Contact Flow Units Name Type

Total Alarm Mode Flow Alarm Mode Flow Alarm Delay Flow Alarm Clear Deadband Reprime Time Volume/Contact

Flow Units Rate Units Smoothing Factor Output Name Type

INPUTS

DIGITAL INPUTS

DI Counter (D1-D12)

Totalizer Alarm Reset Total Set Total Scheduled Reset

Additional Settings for DI Counter

Units Rate Units Smoothing Factor Name Type

Page 44

Outputs

On/Off (R1) Off Inhibitor (R2) Off Flow Timer (R3) Off Manual (R4) Off

Outputs>On/Off (R1)

Details Screen

Content varies with

output type

On/Off (R1-R8)

HOA Setting Set Point Deadband Duty Cycle Period

Flow Timer (R1-R8)

HOA Setting Feed Duration Accumulated Volume Output Time Limit

Only if HVAC mode is enabled

Bleed & Feed (R1-R8)

SENSOR (S1)

HOA Setting Feed Time Limit Output Time Limit Reset Output Timeout

Only if HVAC mode is enabled

Bleed then Feed (R1-R8)

SENSOR (S1)

HOA Setting Feed Percentage Feed Time Limit Reset Timer

Percent Timer (R1-R8)

SENSOR (S1)

HOA Setting Sample Period Feed Percentage Output Time Limit

Only if HVAC mode is enabled

Biocide Timer (R1-R8)

SENSOR (S1)

HOA Setting Event 1 (through 10) Repetition Week Day Start Time Duration

Alarm (R1-R8)

SENSOR (S1)

HOA Setting Alarm Mode Select Alarms Output

Time Prop (R1-R8)

HOA Setting Set Point Proportional Band Sample Period

Main Menu 09:19:01 14-Mar-2017

Inputs

Outputs

Alarms

Additional Settings for On/OFF Mode: Duty Cycle

On Delay Time O Delay Time Output Time Limit Reset Output Timeout Interlock Channels Activate with Channels

Additional Settings for Flow Timer Mode: Reset Output Timeout

Interlock Channels Activate with Channels Minimum Relay Cycle Hand Time Limit Reset Time Total

Additional Settings for Bleed & Feed Mode:

Interlock Channels Activate with Channels Minimum Relay Cycle Hand Time Limit Reset Time Total

Additional Settings for Bleed then Feed Mode: Output Time Limit

Reset Output Timeout Interlock Channels Activate with Channels Minimum Relay Cycle Hand Time Limit

Additional Settings for Percent Timer Mode: Reset Output Timeout

Interlock Channels Activate with Channels Minimum Relay Cycle Hand Time Limit Reset Time Total

Additional Settings for Biocide Timer Mode: Bleed

Prebleed Time Prebleed To Cond Input Bleed Lockout Add Last Missed Interlock Channels

Additional Settings for Alarm Mode: Interlock Channels

Activate with Channels Minimum Relay Cycle Hand Time Limit

Additional Settings for Time Prop Mode: Output Time Limit Reset Output Timeout Interlock Channels Activate with Channels Minimum Relay Cycle Hand Time Limit Reset Time Total

Minimum Relay Cycle Hand Time Limit Reset Time Total Input Direction Name Mode

Input Direction Name Mode

Config

HOA

Graph

Flow Input Flow Input 2 Name Mode

Bleed Name Mode

Reset Time Total Bleed Name Mode

Name Mode

Activate with Channels Minimum Relay Cycle Hand Time Limit Reset Time Total Name Mode

Reset Time Total Name Mode

RELAY OUTPUTS (R1-R8) and VIRTUAL OUTPUTS (C1-C8)

(CONTINUED ON NEXT PAGE)

Only if HVAC mode is enabled

Int. Sampling (R1-R8)

HOA Setting Set Point Proportional Band Deadband

Manual (R1-R16)

HOA Setting On Delay Time Off Delay Time Output Time Limit

Only if Pulse Relay Type

Pulse Prop (R1-R8)

SENSOR (S1)

HOA Setting Set Point Proportional Band Minimum/Maximum Output

Only if Pulse Relay Type Only if HVAC mode is disabled

PID Control (R1-R8)

SENSOR (S1)

HOA Setting Set Point Gain Proportional Gain

Dual Setpoint (R1-R8)

HOA Setting Set Point Set Point 2 Deadband

Only if HVAC mode is disabled

Timer Control (R1-R8)

SENSOR (S1)

HOA Setting Event 1 (through 10) Repetition Hourly

Probe Wash (R1-R8)

HOA Setting Event 1 (through 10) Repetition Hourly

Spike Control (R1-R8)

HOA Setting Set point Spike Set point Deadband

Not available for virtual outputs

Lag Control (R1-R8)

HOA Setting Lead Wear Leveling* Wear Cycle Time*

Additional Settings for Intermittent Sampling Mode: Sample Time Hold Time Maximum Blowdown Wait Time Output Time Limit Reset Output Timeout Interlock Channels Activate with Channels

Additional Settings for Manual Mode: Reset Output Timeout Interlock Channels Minimum Relay Cycle Hand Time Limit Reset Time Total

Additional Settings for Pulse Prop Mode: Maximum Rate

Interlock Channels Activate with Channels Minimum Relay Cycle Hand Time Limit Reset Time Total

Additional Settings for PID Control Mode: Integral Time Integral Gain Derivative Time Derivative Gain Reset PID Integral Minimum Output Maximum Output Maximum Rate Input Direction Input Minimum

Additional Settings for Dual Setpoint Mode: Duty Cycle Period

Duty Cycle On Delay Time O Delay Time Output Time Limit Reset Output Timeout Interlock Channels Activate with Channels

Additional Settings for Timer Control Mode: Week

Day Events Per Day Start Time Duration Add Last Missed Output Time Limit Reset Output Timeout

Additional Settings for Probe Wash Mode: Week

Day Events Per Day Start Time Duration Input Input 2 Sensor Mode

Additional Settings for Spike Control Mode: Duty Cycle Period Duty Cycle Event 1 (through 8) Repetition Week Day Star t Time Duration Input

Additional Settings for Lag Control Mode: Activation Mode*

Set Point Set Point 2 Deadband Delay Time* Output Time Limit Reset Output Timeout Interlock Channels

Min Relay Cycle Hand Time Limit Reset Time Total Cond Input Trap Sample Name Mode

Name Mode

Input Direction Name Mode

Input Maximum Gain Form Output Time Limit Reset Output Timeout Interlock Channels Activate with Channels Minimum Relay Cycle Hand Time Limit Reset Time Total Name Mode

Minimum Relay Cycle Hand Time Limit Reset Time Total Input Direction Name Mode

Interlock Channels Activate with Channels Minimum Relay Cycle Hand Time Limit Reset Time Total Name Mode

Hold Time Interlock Channels Activate with Channels Minimum Relay Cycle Hand Time Limit Reset Time Total Name Mode

Direction Interlock Channels Activate with Channels Minimum Relay Cycle Hand Time Limit Reset Time Total Name Mode

Activate with Channels Min Relay Cycle Hand Time Limit Reset Time Total Name Mode

* See section 5.3.18

Page 45

Outputs

On/Off (R1) Off Inhibitor (R2) Off Flow Timer (R3) Off Manual (R4) Off

Outputs>On/Off (R1)

Details Screen

Content varies with

output type

Main Menu 09:19:01 14-Mar-2017

Inputs

Outputs

Alarms

Config

HOA

Graph

RELAY OUTPUTS (R1-R8) and VIRTUAL OUTPUTS (C1-C8)

Continued

Target PPM (R1-R8)

HOA Setting Target Pump Capacity Pump Setting

Not available for virtual outputs

PPM Volume (R1-R8)

HOA Setting Target Specific Gravity Accumulator Volume

Flow Prop (R1-R8)

HOA Setting Target Pump Capacity Pump Setting

Counter Timer (R1-R8)

HOA Setting Feed Duration Accumulated Setpoint Output Time Limit

Additional Settings for Target PPM Control Mode: Specic Gravity

Accumulator Volume Reset Timer Output Time Limit Reset Output Timeout Interlock Channels Activate with Channels Min Relay Cycle Hand Time Limit

Additional Settings for PPM Volume Control Mode: Reset Timer

Output Time Limit Reset Output Timeout Interlock Channels Activate with Channels Minimum Relay Cycle Hand Time Limit

Additional Settings for Flow Prop Control Mode: Specic Gravity

Maximum Rate Output Time Limit Reset Output Timeout Interlock Channels Activate with Channels Hand Time Limit

Additional Settings for Flow Timer Mode: Reset Output Timeout

Interlock Channels Activate with Channels Minimum Relay Cycle Hand Time Limit Reset Time Total

Reset Time Total Flow Input Flow Input 2 Cycles Input Low Cycles Limit Disturbance Input Name Mode

Reset Time Total Flow Input Flow Input 2 Cycles Input Low Cycles Limit Name Mode

Reset Time Total Flow Input Cycles Input Low Cycles Limit Name Mode

Input Name Mode

On/Off Dis (R1-R8)

HOA Setting Setpoint Deadband Duty Cycle Period

Vol Blend (R1-R8)

HOA Setting Accumulator Volume Blend Volume Reset Timer

Flow Meter Ratio (R1-R8)

HOA Setting Accumulator Volume Bleed Volume Reset Timer

Only if Pulse Relay type

Disturbance (R1-R8)

HOA Setting Reset Time Total Output Time LImit Reset Output Timeout

Additional Settings for On/O Dis: Duty Cycle

On Delay Time O Delay Time Output Time Limit Reset Output Timeout Interlock Channels Activate with Channels Minimum Relay Cycle

Additional Settings for Vol Blend: Output Time Limit

Reset Output Timeout Interlock Channels Activate with Channels Minimum Relay Cycle Hand Time Limit

Additional Settings for Flow Meter Ratio: Output Time Limit

Reset Output Timeout Interlock Channels Activate with Channels Minimum Relay Cycle Hand Time Limit Reset Time Total

Additional Settings for Disturbance: Min Output

Max Output Interlock Channels Activate with Channels Hand Output Hand Time Limit Max Rate

Hand Time Limit Reset Time Total Input Direction Disturbance Input Name Mode

Reset Time Total Flow Input Disturbance Input Name Mode

Makeup Meter Makeup Meter 2 Bleed Meter Bleed Meter 2 Disturbance Input Name Mode

Primary Output Disturbance Input Trigger Input Activated Trigger Mode Name Mode

Page 46

ANALOG OUTPUTS (A11-A44) and VIRTUAL OUTPUTS (C1-C8)

Retransmit (A11-A44)

HOA Setting 4 mA Value 20 mA Value Hand Output

Prop Control (A11-A44)

HOA Setting Set Point Proportional Band Min Output

Only if HVAC mode is disabled

PID Control (A11-A44)

HOA Setting Set Point Gain Proportional Gain

Disturbance (A11-A44)

HOA Setting Reset Time Total Output Time Limit Reset Output Timeout

Additional settings for Retransmit Mode: Error Output

Reset Time Total Input Name Mode

Additional Settings for Proportional Control Mode: Max Output

Output Time Limit Reset Output Timeout Interlock Channels Activate with Channels Hand Output Hand Time Limit Reset Time Total O Mode Output Error Output

Additional Settings for PID Control Mode: Integral Time

Integral Gain Derivative Time Derivative Gain Reset PID Integral Min Output Max Output Max Rate Output Time Limit Reset Output Timeout Interlock Channels Activate with Channels

Additional Settings for Disturbance:

Min Output Max Output Interlock Channels Activate with Channels Hand Output Hand Time Limit O Mode Output Error Output Primary Output

Input Direction Name Mode

Hand Output Hand Time Limit O Mode Output Error Output Reset Time Total Input Direction Input Minimum Input Maximum Gain Form Name Mode

Disturbance Input Trigger Input Activated Trigger Mode Name Mode

Manual Control (A11-A44)

HOA Setting Interlock Channels Activate with Channels Minimum Relay Cycle

Flow Prop (A11-A44)

HOA Setting Target Pump Capacity Pump Setting

Not available for virtual outputs

Lag Output (A11-A44)

HOA Setting Lead Reset Time Total Output Time Limit

Additional Settings for Manual Control Mode: Hand Time Limit

Reset Time Total Name Mode

Additional Settings for Flow Prop Control Mode: Specic Gravity

Output Time Limit Reset Output Timeout Interlock Channels Activate with Channels Hand Output Hand Time Limit O Mode Output

Additional settings for Lag Output Mode: Reset Output Timeout Wear Leveling Wear Cycle Time Name Mode

Error Output Reset Time Total Flow Input Cycles Input Low Cycles Limit Name Mode

Page 47

HOME SCREEN (example)

Flowswitch (D1) No Flow

CCond (S11) 3041 µS/cm

Temp (S12) 77.0°F

Flowswitch (D1) No Flow

Global Settings

Date Time Name Location

Security Settings

Controller Log Out Security Local Password

Ethernet Settings

SENSOR (S1)

DHCP Setting Controller IP Address Network Netmask Network Gateway

Ethernet Details

SENSOR (S1)

Alarms DHCP Status Controller IP Address Network Netmask

WiFi Settings

SENSOR (S1)

WiFi Mode SSID Key Gateway Connection

WiFi Details

SENSOR (S1)

Alarms Last VTouch Data Last VTouch Config Live Connect Status

Remote Communications

SENSOR (S1)

Comm Status Data Format Data Port Verbose Logging

Main Menu 09:19:01 14-Mar-2017

Inputs

Outputs

Alarms

Additional Global Settings: Global Units

Temperature Units Alarm Delay HVAC Modes Language

Additional Ethernet Settings:

DNS Server TCP Timeout VTouch Status LiveConnect Status Update Period Reply Timeout

Additional Ethernet Details:

Network Gateway DNS Server MAC Address Last VTouch Data Last VTouch Config

Additional WiFi Settings: DHCP Setting

Controller IP Address Network Netmask Network Gateway DNS Server Ad-Hoc SSID Ad-Hoc Security

Additional WiFi Details: WiFi Status

Signal Strength RSSI WiFi Channel DHCP Status Controller IP Address Network Netmask

Additional Remote Communications: Device ID

Network

Ad-Hoc Key SSID Broadcast TCP Timeout Temporary Ad-Hoc Begin Temporary Ad-Hoc Mode Ad-Hoc Time Limit

Network Gateway Security Protocol DNS Server BSSID/MAC Address FCC ID IC ID

CONFIG MENU

Config

HOA

Graph

Display Settings

Home 1 Home 2 Home 3 Home 4

File Utilities

File Transfer Status

SENSOR (S1)

Data Log Range Log Frequency Export Data Log File

Controller Details

Controller Product Name Serial Number

Controller Details

Controller Board

Email Report Settings

SENSOR (S1)

Report #1 through #4 Email Adresses

Email Server SMTP Server

Additional Email Report Settings:

SMTP Port From Address ASMTP Username ASMTP Password

Config

Global Settings

SENSOR (S1)

Security Settings Ethernet Settings Ethernet Details

Additional Config Settings: WiFi Settings WiFi Details Remote Communications (Modbus/BacNet) Email Report Settings Display Settings File Utilities Controller Details

Additional Display Settings:

Home 5 Home 6 Home 7 Home 8 Adjust Display

Key Beep

Additional File Utilities: Export Event Log Export System Log Export User Config File Import User Config File Restore Default Config Software Upgrade

Additional Controller Details: Software Version

Power Board Sensor Board #1 Software Version Sensor Board #2 Software Version Sensor Board #3 Software Version Sensor Board #4 Software Version Last Data Log Digital Inputs Software Version Network Software Version Battery Power Processor Temp

Report #1-4 Settings: Report Type Email Recipients Repetition (Datalog/Summary Reports) Reports Per Day (Datalog/Summary Reports) Day (Datalog/Summary Reports) Day of Month (Datalog/Summary Reports) Report Time (Datalog/Summary Reports) Log Frequency (Datalog Report) Alarm Mode (Alarms Report) Select Alarms (Alarms Report) Alarm Delay (Alarms Report)

Controller Temp 1 Controller Temp 2 Relay Board Temp Network Temp Processor Temp I/O Card 1 Temp I/O Card 2 Temp I/O Card 3 Temp I/O Card 4 Temp Network Temp DI Temp +12 Volt Supply +5 Volt Supply +3.3 Volt Supply LCD Bias Voltage LCD Supply

Page 48

Outputs (see section 5.3)

Program the settings for each output

The R1 relay output will be displayed. Touch the relay eld to get to the Details screen. Touch the Settings icon. If the name of the relay does not describe the control mode desired, touch the Scroll Down icon until Mode eld is displayed. Touch the Mode eld. Touch the Scroll Down icon until the correct control mode is displayed, then touch the Conrm icon to accept the change. This will bring you back to the Settings screen. Finish the rest of

the R1 settings.

If you want the output to be interlocked by a ow switch or by another output being active, enter the Interlock

Channels menu and select the input or output channel that will interlock this output. The default is for the output to be in Off mode, where the output does not react to the settings. Once all settings for that output are complete, enter the HOA Setting menu and change it to Auto. Repeat for each output.

Normal Startup

Startup is a simple process once your set points are in memory. Simply check your supply of chemicals, turn on the controller, calibrate it if necessary and it will start controlling.

4.5 Shut Down

To shut the controller down, simply turn off the power. Programming remains in memory. It is important that the pH/ ORP electrode remains wet. If the shutdown is expected for any longer than a day, and it is possible for the electrode to dry out, remove the electrode from the tee and store it in pH 4 buffer or cooling tower water. Take care to avoid freezing temperatures when storing the pH/ORP electrodes to avoid breakage of the glass.

5.0 OPERATION using the touchscreen

These units control continuously while power is applied. Programming is accomplished either via the touchscreen or the optional Ethernet connection. See section 6.0 for Ethernet instructions.

To view the readings of each sensor, or whatever user-dened list of parameters that has been set, touch the Home

icon if not already there. The menus for each of these parameters may be accessed directly by touching the parameter.

Keep in mind that even while browsing through menus, the unit is still controlling.

Touch the Main Menu icon

inputs and outputs. Under the Conguration menu will be general settings such as the clock, the language, etc. that do

not have an input or output associated with it. Each input has its own menu for calibration and unit selection as needed. Each output has its own setup menu including set points, timer values and operating modes as needed.

5.1 Alarms Menu

Touch the Alarms icon to view a list of active alarms. If there are more than six active alarms, the Page Down icon will be shown; touch this icon to bring up the next page of alarms.

Touch the Main Menu icon to go back to the previous screen.

from the home page to access all settings. The menu structure is grouped by alarms,

Page 49

5.2 Inputs Menu

Touch the Inputs icon to view a list of all sensor and digital inputs. The Page Down icon pages down the list of inputs, the Page Up icon pages up the list of inputs, the Main Menu icon brings back the previous screen.

Touch the input to access that input’s details, calibration (if applicable) and settings.

Sensor Input Details

The details for any type of sensor input include the current value read, alarms, the raw (uncalibrated) signal, the sensor type, and the calibration gain and offset. If the sensor has automatic temperature compensation, then the sensor’s temperature value and alarms, the temperature resistance value read, and the type of temperature element required are also displayed under a separate sensor input menu.

Calibration

Touch the Calibration icon to calibrate the sensor. Select the calibration to perform: One Point Process, One Point Buffer or Two Point Buffer Calibration. Not all calibration options are available for all types of sensor.

One Point Process Calibration

New Value

Enter the actual value of the process as determined by another meter or laboratory analysis and touch Conrm.

Cal Successful or Failed

If successful, touch Conrm to put the new calibration in memory.

If failed, you may retry the calibration or cancel. Refer to Section 8 to troubleshoot a calibration failure.

One Point Buffer Calibration, Disinfection/Generic Sensor Zero Cal, Conductivity Air Cal

Cal Disables Control

Touch Conrm to continue or Cancel to abort

Buffer Temperature (only appears if no temperature sensor is detected for sensor types that use automatic temperature compensation)

Enter the temperature of the buffer and touch Conrm.

Buffer Value (only appears for One Point Calibration except when automatic buffer recognition is used)) Enter the value of the buffer being used

Rinse Sensor

Remove the sensor from the process, rinse it off, and place it in the buffer solution (or oxidizer-free water for

Zero Cal, or air for the conductivity open air cal). Touch Conrm when ready.

Stabilization

When the temperature (if applicable) and signal from the sensor is stable, the controller will automatically move

to the next step. If they don’t stabilize you may manually go to the next step by pressing Conrm.

Cal Successful or Failed

If successful, touch Conrm to put the new calibration in memory.

If failed, you may retry the calibration or cancel. Refer to Section 8 to troubleshoot a calibration failure.

Resume Control

Replace the sensor in the process and touch Conrm when ready to resume control.

Two Point Buffer Calibration

Cal Disables Control

Touch Conrm to continue or Cancel to abort

Buffer Temperature (only appears if no temperature sensor is detected for sensor types that use automatic temperature compensation)

Enter the temperature of the buffer and touch Conrm.

Page 50

First Buffer Value (does not appear if automatic buffer recognition is used)

Enter the value of the buffer being used

Rinse Sensor

Remove the sensor from the process, rinse it off, and place it in the buffer solution. Touch Conrm when ready.

Stabilization

When the temperature (if applicable) and signal from the sensor is stable, the controller will automatically move

to the next step. If they don’t stabilize you may manually go to the next step by touching Conrm.

Second Buffer Temperature (only appears if no temperature sensor is detected for sensor types that use automatic temperature compensation)

Enter the temperature of the buffer and press Conrm.

Second Buffer Value (does not appear if automatic buffer recognition is used )

Enter the value of the buffer being used

Rinse Electrode

Remove the sensor from the process, rinse it off, and place it in the buffer solution. Touch Conrm when ready.

Stabilization

When the temperature (if applicable) and signal from the sensor is stable, the controller will automatically move

to the next step. If they don’t stabilize you may manually go to the next step by touching Conrm.

Cal Successful or Failed

If successful, touch Conrm to put the new calibration in memory. The calibration adjusts the offset and the gain

(slope) and displays the new values. If failed, you may retry the calibration or cancel. Refer to Section 8 to troubleshoot a calibration failure.

Resume Control

Replace the sensor in the process and touch Conrm when ready to resume control.

Three Point Buffer Calibration (pH sensors only)

Cal Disables Control

Touch Conrm to continue or Cancel to abort

Buffer Temperature (only appears if no temperature sensor is detected)

Enter the temperature of the buffer and touch Conrm.

First Buffer Value (does not appear if automatic buffer recognition is used) Enter the value of the buffer being used

Rinse Sensor

Remove the sensor from the process, rinse it off, and place it in the buffer solution. Touch Conrm when ready.

Stabilization

When the temperature (if applicable) and signal from the sensor is stable, the controller will automatically move to

the next step. If they don’t stabilize you may manually go to the next step by touching Conrm.

Second Buffer Temperature (only appears if no temperature sensor is detected)

Enter the temperature of the buffer and touch Conrm.

Second Buffer Value (does not appear if automatic buffer recognition is used) Enter the value of the buffer being used

Rinse Electrode

Remove the sensor from the process, rinse it off, and place it in the buffer solution. Touch Conrm when ready.

Page 51

Stabilization

When the temperature (if applicable) and signal from the sensor is stable, the controller will automatically move to

the next step. If they don’t stabilize you may manually go to the next step by touching Conrm.

Third Buffer Temperature (only appears if no temperature sensor is detected)

Enter the temperature of the buffer and touch Conrm.

Third Buffer Value (does not appear if automatic buffer recognition is used) Enter the value of the buffer being used

Rinse Electrode

Remove the sensor from the process, rinse it off, and place it in the buffer solution. Touch Conrm when ready.

Stabilization

When the temperature (if applicable) and signal from the sensor is stable, the controller will automatically move to the next step.

Cal Successful or Failed

If successful, touch Conrm to put the new calibration in memory. The calibration adjusts the offset, gain (slope)

and calibration midpoint and displays the new values. If failed, you may retry the calibration or cancel. Refer to Section 7 to troubleshoot a calibration failure.

Resume Control

Replace the sensor in the process and touch Conrm when ready to resume control.

One Point Analog Calibration

OK to disable control? Touch Conrm to continue or Cancel to abort.

Input Value

Enter the mA value that the transmitter will be sending. Touch Conrm to continue or Cancel to abort.

Please set input signal to specied value

Make sure that the transmitter is sending the desired mA signal. Touch Conrm to continue or Cancel to abort.

Automatic circuit calibration in progress

Cal Successful or Failed

If successful, touch Conrm to save calibration results. The calculated offset will be displayed.

If failed, you may retry the calibration or cancel. You may also restore calibration to the factory defaults. The calibration will fail if the measured mA is more than 2 mA away from the Input Value entered.

Please restore input signal to process value

Put the transmitter back into normal measurement mode if necessary and touch Conrm when ready to resume control.

Two Point Analog Calibration

OK to disable control? Touch Conrm to continue or Cancel to abort.

Input Value

Enter the mA value that the transmitter will be sending. Touch Conrm to continue or Cancel to abort.

Please set input signal to specied value

Make sure that the transmitter is sending the desired mA signal. Touch Conrm to continue or Cancel to abort.

Automatic circuit calibration in progress

Second Input Value

Enter the mA value that the transmitter will be sending. Touch Conrm to continue or Cancel to abort.

Please set input signal to specied value

Make sure that the transmitter is sending the desired mA signal. Touch Conrm to continue or Cancel to abort.

Automatic circuit calibration in progress

Page 52

Cal Successful or Failed

If successful, touch Conrm to save calibration results. The calculated offset and gain will be displayed.

If failed, you may retry the calibration or cancel. You may also restore calibration to the factory defaults. The calibration will fail if the offset is more than 2 mA or the gain is not between 0.5 and 2.0.

Please restore input signal to process value

Put the transmitter back into normal measurement mode if necessary and touch Conrm when ready to resume control.

5.2.1 Contacting Conductivity

Settings

Touch the Settings icon to view or change the settings related to the sensor.

Alarms

Deadband

Low-Low, Low, High and High-High Alarms limits may be set.

This is the Alarm Deadband. For example, if the High Alarm is 3000, and the deadband is 10, the alarm will activate at 3001 and deactivate at 2990.

Reset Calibration Values

Cal Required Alarm

Enter this menu to reset the sensor calibration back to factory defaults.

To get an alarm message as a reminder to calibrate the sensor on a regular schedule, enter the number of days between calibrations. Set it to 0 if no reminders are necessary.

Alarm Suppression

If any of the relays or digital inputs are selected, any alarms related to this input will be suppressed if the selected relay or digital input is active. Typically this is used to

prevent alarms if there is no sample ow past the ow switch digital input.

Smoothing Factor

Increase the smoothing factor percentage to dampen the response to changes. For example, with a 10% smoothing factor, the next reading shown will consist of an average of 10% of the previous value and 90% of the current value.

Default Temp

If the temperature signal is lost at any time, then the controller will use the Default Temp setting for temperature compensation.

Cable Length

The controller automatically compensates for errors in the reading caused by varying the length of the cable.

Gauge

Cell Constant

Temp Compensation

The cable length compensation depends upon the gauge of wire used to extend the cable

Enter the cell constant of the sensor that is connected to the input.

Select between the standard NaCl temperature compensation method or a linear %/ degree C method.

Temp Comp Factor

This menu only appears if Linear Temp Comp is selected. Change the %/degree C to match the chemistry being measured. Standard water is 2%.

Units

Name

Type

Select the units of measure for the conductivity.

The name used to identify the sensor may be changed.

Select the type of sensor to be connected.

5.2.2 Electrodeless Conductivity

Settings

Touch the Settings icon to view or change the settings related to the sensor.

Alarms

Deadband

Reset Calibration Values

Cal Required Alarm

Alarm Suppression

Low-Low, Low, High and High-High Alarms limits may be set.

This is the Alarm Deadband. For example, if the High Alarm is 3000, and the deadband is 10, the alarm will activate at 3000 and deactivate at 2990.

Enter this menu to reset the sensor calibration back to factory defaults.

To get an alarm message as a reminder to calibrate the sensor on a regular schedule, enter the number of days between calibrations. Set it to 0 if no reminders are necessary.

If any of the relays or digital inputs are selected, any alarms related to this input will be suppressed if the selected relay or digital input is active. Typically this is used to

prevent alarms if there is no sample ow past the ow switch digital input.

Page 53

Smoothing Factor

Default Temp

Installation Factor

Cable Length

Gauge

Cell Constant

Range

Temp Compensation

Temp Comp Factor

Units

Name

Type

If the temperature signal is lost at any time, then the controller will use the Default Temp setting for temperature compensation.

Do not change unless instructed by the factory.

The controller automatically compensates for errors in the reading caused by varying the length of the cable.

The cable length compensation depends upon the gauge of wire used to extend the cable

Do not change unless instructed by the factory. The Walchem sensor is 6.286. Sensors made by others are not supported.

Select the range of conductivity that best matches the conditions the sensor will see.

Select between the standard NaCl temperature compensation method or a linear %/ degree C method.

This menu only appears if Linear Temp Comp is selected. Change the %/degree C to match the chemistry being measured. Standard water is 2%.

Select the units of measure for the conductivity.

The name used to identify the sensor may be changed.

Select the type of sensor to be connected.

5.2.3 Temperature

Settings

Touch the Settings icon to view or change the settings related to the sensor.

Alarms

Deadband

Reset Calibration Values

Cal Required Alarm

Alarm Suppression

Smoothing Factor

Name

Element

Low-Low, Low, High and High-High Alarms limits may be set.

This is the Alarm Deadband. For example, if the High Alarm is 100, and the deadband is 1, the alarm will activate at 100 and deactivate at 99.

Enter this menu to reset the sensor calibration back to factory defaults.

To get an alarm message as a reminder to calibrate the sensor on a regular schedule, enter the number of days between calibrations. Set it to 0 if no reminders are necessary.

If any of the relays or digital inputs are selected, any alarms related to this input will be suppressed if the selected relay or digital input is active. Typically this is used to

prevent alarms if there is no sample ow past the ow switch digital input.

The name used to identify the sensor may be changed.

Select the specic type of temperature sensor to be connected.

5.2.4 pH

Settings

Touch the Settings icon to view or change the settings related to the sensor.

Alarms

Deadband

Low-Low, Low, High and High-High Alarms limits may be set.

This is the Alarm Deadband. For example, if the High Alarm is 9.50, and the deadband is 0.05, the alarm will activate at 9.51 and deactivate at 9.45.

Alarm Suppression

If any of the relays or digital inputs are selected, any alarms related to this input will be suppressed if the selected relay or digital input is active. Typically this is

used to prevent alarms if there is no sample ow past the ow switch digital input.

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Smoothing Factor

Reset Calibration Values

Cal Required Alarm

Buffers

Default Temp

Cable Length

Gauge

Electrode

Name

Type

5.2.5 ORP

Enter this menu to reset the sensor calibration back to factory defaults.

To get an alarm message as a reminder to calibrate the sensor on a regular schedule, enter the number of days between calibrations. Set it to 0 if no reminders are necessary.

Select if calibration buffers will be manually entered, or if they will be automatically detected, and if so, which set of buffers will be used. The choices are Manual Entry, JIS/NIST Standard, DIN Technical, or Traceable 4/7/10.

If the temperature signal is lost at any time, then the controller will use the Default Temp setting for temperature compensation.

The controller automatically compensates for errors in the reading caused by varying the length of the cable.

The cable length compensation depends upon the gauge of wire used to extend the cable

Select Glass for a standard pH electrode, or Antimony. Antimony pH electrodes have a default slope of 49 mV/pH and an offset of -320 mV at pH 7.

The name used to identify the sensor may be changed.

Select the type of sensor to be connected.

Settings

Touch the Settings icon to view or change the settings related to the sensor.

Alarms

Deadband

Low-Low, Low, High and High-High Alarms limits may be set.

This is the Alarm Deadband. For example, if the High Alarm is 800, and the deadband is 10, the alarm will activate at 801 and deactivate at 790.

Reset Calibration Values

Cal Required Alarm

Enter this menu to reset the sensor calibration back to factory defaults.

To get an alarm message as a reminder to calibrate the sensor on a regular schedule, enter the number of days between calibrations. Set it to 0 if no reminders are necessary.

Alarm Suppression

If any of the relays or digital inputs are selected, any alarms related to this input will be suppressed if the selected relay or digital input is active. Typically this is

used to prevent alarms if there is no sample ow past the ow switch digital input.

Smoothing Factor

Cable Length

The controller automatically compensates for errors in the reading caused by varying the length of the cable.

Gauge

Name

Type

The cable length compensation depends upon the gauge of wire used to extend the cable

The name used to identify the sensor may be changed.

Select the type of sensor to be connected.

5.2.6 Disinfection

Settings

Touch the Settings icon to view or change the settings related to the sensor.

Alarms

Deadband

Reset Calibration Values

Low-Low, Low, High and High-High Alarms limits may be set.

This is the Alarm Deadband. For example, if the High Alarm is 7.00, and the deadband is 0.1, the alarm will activate at 7.01 and deactivate at 6.90.

Enter this menu to reset the sensor calibration back to factory defaults.

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Cal Required Alarm

To get an alarm message as a reminder to calibrate the sensor on a regular schedule, enter the number of days between calibrations. Set it to 0 if no reminders are necessary.

Alarm Suppression

If any of the relays or digital inputs are selected, any alarms related to this input will be suppressed if the selected relay or digital input is active. Typically this is

used to prevent alarms if there is no sample ow past the ow switch digital input.

Smoothing Factor

Cable Length

The controller automatically compensates for errors in the reading caused by varying the length of the cable.

Gauge

Name

Sensor

Type

The cable length compensation depends upon the gauge of wire used to extend the cable

The name used to identify the sensor may be changed.

Select the specic type and range of disinfection sensor to be connected.

Select the type of sensor to be connected.

5.2.7 Generic Sensor

Settings

Touch the Settings icon to view or change the settings related to the sensor.

Alarms

Deadband

Low-Low, Low, High and High-High Alarms limits may be set.

This is the Alarm Deadband. For example, if the High Alarm is 7.00, and the deadband is 0.1, the alarm will activate at 7.01 and deactivate at 6.90.

Reset Calibration Values

Cal Required Alarm

Enter this menu to reset the sensor calibration back to factory defaults.

To get an alarm message as a reminder to calibrate the sensor on a regular schedule, enter the number of days between calibrations. Set it to 0 if no reminders are necessary.

Alarm Suppression

If any of the relays or digital inputs are selected, any alarms related to this input will be suppressed if the selected relay or digital input is active. Typically this is

used to prevent alarms if there is no sample ow past the ow switch digital input.

Sensor Slope

Enter the slope of sensor in mV/Units (if Electrode selection is Linear) or mV/Decade (if Electrode selection is Ion Selective).

Sensor Offset

Only appears if the Electrode selection is Linear. Enter the offset of the sensor in mV if 0 mV is not equal to 0 units. For Ion Selective Electrodes, the Sensor Off-

set is not calculated until the rst calibration is performed, and the sensor will

read Zero until a calibration has been successfully completed!

Low Range

High Range

Smoothing Factor

Enter the low end of the range of the sensor

Enter the high end of the range of the sensor

Cable Length

The controller automatically compensates for errors in the reading caused by varying the length of the cable.

Gauge

Units

Electrode

The cable length compensation depends upon the gauge of wire used to extend the cable

Type in the units of measure for the input, for example, ppm.

Select the type of electrode to be connected. Select Linear if the sensor slope is a linear voltage per Units. Select Ion Selective if the electrode voltage output is loga-

rithmic, dened as “mV/decade”.

Name

Type

The name used to identify the sensor may be changed.

Select the type of sensor to be connected.

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5.2.8 Corrosion Input

ONLY AVAILABLE IF A CORROSION INPUT BOARD IS INSTALLED

Input Details

The details for this type of input include the current corrosion rate, alarms, status, current stage in the measurement cycle, the elapsed time in the current cycle, the raw (uncalibrated) corrosion rate, the number of days in service of the electrodes, the calibration offset, the date of last calibration, and the type of input.

Settings

Touch the Settings icon to view or change the settings related to the sensor.

Alarms

Deadband

Replace Corrosion Electrode

Stabilization time

Electrode Alarm

Reset Calibration Values

Cal Required Alarm

Alarm Suppression

Smoothing Factor

Alloy Multiplier

Cycle Time

Range

Units

Name

Type

Low-Low, Low, High and High-High Alarms limits may be set.

This is the Alarm Deadband. For example, if the High Alarm is 10, and the deadband is 0.1, the alarm will activate at 10.01 and deactivate at 9.9.

Used to reset the timers for both the “Electrode Alarm” and the “Stabilization Time”.

Provides a control lock-out during the initial period of high readings when the electrode is changed. Set to 0 hours to disable.

Set a reminder, in days, for when to replace the electrode tips.

Enter this menu to reset the sensor calibration back to factory defaults.

To get an alarm message as a reminder to calibrate the sensor on a regular schedule, enter the number of days between calibrations. Set it to 0 if no reminders are necessary.

If any of the relays or digital inputs are selected, any alarms related to this input will be suppressed if the selected relay or digital input is active. Typically, this is

used to prevent alarms if there is no sample ow past the ow switch.

Enter the multiplier that matches the metallurgy of the electrodes connected to the sensor. Refer to the chart below.

Select the length of the cycle time to be used. The longer cycle times provide more accurate readings but decrease the speed of response.

Select the expected range of the corrosion rate.

Select the units of measure for the corrosion.

The name used to identify the sensor may be changed.

Select the type of sensor to be connected.

Alloy Multipliers

These values are based on using standard corrosion electrodes with 5 cm2 surface area.

Material Multiplier UNS Code

Carbon Steel 1.00 K03005

Copper 110 ETP 2.00 C11000

Admiralty Brass 1.67 C44300

Aluminum 1100 0.94 A91100

Aluminum 2024 0.88 A92024

Phosphorized Admiralty Brass

Aluminum Silicon Bronze 1.48 C64200

1.68 C44500

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Aluminum Brass 1.62 C68700

Copper/Nickel 90/10 1.80 C70610

Copper/Nickel 70/30 1.50 C71500

AISI 4130 Alloy Steel 1.00 G41300

Lead 2.57 L50045

Monel 400 Nickel 1.13 N04400

Monel K500 Nickel 1.04 N05500

Hastelloy C22 0.85 N06022

Inconel 600 Nickel 0.95 N06600

Incoloy Alloy 20 0.98 N08020

Incoloy Alloy 800 0.89 N08800

Incoloy Alloy 825 0.88 N08825

Hastelloy C276 0.86 N10276

Titanium Grade 2 0.75 R50400

304 Stainless Steel 0.89 S30400

316 Stainless Steel 0.90 S31600

2205 Duplex Stainless Steel 0.89 S31803

2507 Super Duplex

0.88 S32750

Stainless Steel

Zinc 1.29 Z17001

5.2.9 Corrosion Imbalance Input

ONLY AVAILABLE IF A CORROSION INPUT BOARD IS INSTALLED

Input Details

The details for this type of input include the current corrosion imbalance value, alarms, status, current stage in the measurement cycle, the elapsed time in the current cycle, the ratio of the current imbalance value to the current corrosion rate, the calibration offset, the date of last calibration, and the type of input.

Settings

Touch the Settings icon to view or change the settings related to the sensor.

Alarms

Deadband

Reset Calibration Values

Cal Required Alarm

Alarm Suppression

Name

Type

Low-Low, Low, High and High-High Alarms limits may be set.

This is the Alarm Deadband. For example, if the High Alarm is 10, and the deadband is 0.1, the alarm will activate at 10.01 and deactivate at 9.9.

Enter this menu to reset the sensor calibration back to factory defaults.

To get an alarm message as a reminder to calibrate the sensor on a regular schedule, enter the number of days between calibrations. Set it to 0 if no reminders are necessary.

If any of the relays or digital inputs are selected, any alarms related to this input will be suppressed if the selected relay or digital input is active. Typically, this is used to prevent

alarms if there is no sample ow past the ow switch.

The name used to identify the sensor may be changed.

Select the type of sensor to be connected.

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5.2.10 Transmitter Input and AI Monitor Input

Select AI monitor if the device connected can be calibrated on its own and the W900 calibration will only be in units of mA. Select Transmitter if the device connected cannot be calibrated on its own and the W900 will be used to calibrate in engineering units of measure.

Settings

Touch the Settings icon to view or change the settings related to the sensor.

Alarms

Deadband

Low-Low, Low, High and High-High Alarms limits may be set.

This is the Alarm Deadband. For example, if the High Alarm is 7.00, and the deadband is 0.1, the alarm will activate at 7.01 and deactivate at 6.90.

Transmitter

Select the type of transmitter connected (2-wire loop powered, 2-wire self-powered, 3-wire, or 4-wire).

Reset Calibration Values

Cal Required Alarm

Enter this menu to reset the sensor calibration back to factory defaults.

To get an alarm message as a reminder to calibrate the sensor on a regular schedule, enter the number of days between calibrations. Set it to 0 if no reminders are necessary.

Alarm Suppression

If any of the relays or digital inputs are selected, any alarms related to this input will be suppressed if the selected relay or digital input is active. Typically this is

used to prevent alarms if there is no sample ow past the ow switch digital input.

Smoothing Factor

4 mA Value

20 mA Value

Units

Name

Type

Enter the value that corresponds to a 4 mA output signal from the transmitter.

Enter the value that corresponds to a 20 mA output signal from the transmitter.

Select the units of measure for the transmitter.

The name used to identify the transmitter may be changed.

Select the type of sensor to be connected. The choice of AI Monitor and Transmitter is only available if a 4-20mA type sensor card is installed.

5.2.11 Fluorometer Input

Settings

Touch the Settings icon to view or change the settings related to the sensor.

Alarms

Deadband

Transmitter

Reset Calibration Values

Cal Required Alarm

Alarm Suppression

Smoothing Factor

Max Sensor Range

Low-Low, Low, High and High-High Alarms limits may be set.

This is the Alarm Deadband. For example, if the High Alarm is 7.00, and the deadband is 0.1, the alarm will activate at 7.01 and deactivate at 6.90.

Select the type of transmitter connected (2-wire loop powered, 2-wire self-powered, 3-wire, or 4-wire).

Enter this menu to reset the sensor calibration back to factory defaults.

To get an alarm message as a reminder to calibrate the sensor on a regular schedule, enter the number of days between calibrations. Set it to 0 if no reminders are necessary.

If any of the relays or digital inputs are selected, any alarms related to this input will be suppressed if the selected relay or digital input is active. Typically this is used to

prevent alarms if there is no sample ow past the ow switch digital input.

Enter the value of the ppb of dye at which the sensor transmits 20 mA.

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Dye/Product Ratio

Enter the value for the ratio of ppb of dye to ppm of inhibitor that is in the inhibitor product being fed.

Name

Type

The name used to identify the transmitter may be changed.

Select the type of sensor to be connected. The choice of Analog Input is only available if that type of sensor card is installed.

5.2.12 Analog Flowmeter Input

Settings Touch the Settings icon to view or change the settings related to the sensor.

Alarms

Deadband

Low-Low, Low, High and High-High Alarms limits may be set.

This is the Alarm Deadband. For example, if the High Alarm is 7.00, and the deadband is 0.1, the alarm will activate at 7.01 and deactivate at 6.90.

Totalizer Alarm

Enter the high limit on the total volume of water accumulated above which an alarm will be activated.

Reset Flow Total

Enter this menu to reset the accumulated ow total to 0. Touch Conrm to accept,

Cancel to leave the total at the previous value and go back.

Set Flow Total

This menu is used to set the total volume stored in the controller to match the regis-

ter on the ow meter. Enter the desired value.

Scheduled Reset

Reset Calibration Values

Cal Required Alarm

Choose to automatically reset the ow total, and if so, Daily, Monthly or Annually.

Enter this menu to reset the sensor calibration back to factory defaults.

To get an alarm message as a reminder to calibrate the sensor on a regular schedule, enter the number of days between calibrations. Set it to 0 if no reminders are necessary.

Alarm Suppression

If any of the relays or digital inputs are selected, any alarms related to this input will be suppressed if the selected relay or digital input is active. Typically this is

used to prevent alarms if there is no sample ow past the ow switch digital input.

Smoothing Factor

Transmitter

Select the type of transmitter connected (2-wire loop powered, 2-wire self-powered, 3-wire, or 4-wire).

Flow Units

Select the units of measure for the water volume, between gallons, liters, cubic meters and million of gallons (MG).

Rate Units

Flowmeter Max

Input Filter

Select the units of measure for the ow rate time base.

Enter the ow rate at which the meter outputs a 20 mA signal.

Enter the mA below which the ow rate will considered 0. Typically any meter output below 4.02 mA is actually 0 ow.

Name

Type

The name used to identify the sensor may be changed.

Select the type of sensor to be connected.

5.2.13 DI State

Input Details

The details for this type of input include the current state with a custom message for open versus closed, alarms, the status of the interlock, and the current type of input setting.

Settings

Touch the Settings icon to view or change the settings related to the sensor.

Open Message

The words used to describe the switch state may be customized.

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Closed Message

Interlock

The words used to describe the switch state may be customized.

Choose whether the input should be in the interlocked state when the switch is either open or closed.

Alarm

Choose if an alarm should be generated when the switch is open, or closed, or if no alarm should ever be generated.

Total Time

Choose to totalize the amount of time that the switch has been open or closed. This will be displayed on the input details screen.

Reset Total Time

Enter this menu to reset the accumulated time to zero. Touch Conrm to accept, Cancel

to leave the total at the previous value and go back.

Name

Type

The name used to identify the switch may be changed.

Select the type of sensor to be connected to the digital input channel.

5.2.14 Flow Meter, Contactor Type

Input Details

The details for this type of input include the total volume accumulated through the ow meter, alarms, and the current

type of input setting.

Settings

Touch the Settings icon to view or change the settings related to the sensor.

Totalizer Alarm

Enter the high limit on the total volume of water accumulated above which an alarm will be activated.

Reset Flow Total

Enter this menu to reset the accumulated ow total to 0. Touch Conrm to accept, Cancel to leave the total at the previous value and go back.

Set Flow Total

This menu is used to set the total volume stored in the controller to match the register

on the ow meter. Enter the desired value.

Scheduled Reset

Volume/Contact

Choose to automatically reset the ow total, and if so, Daily, Monthly or Annually.

Enter the volume of water that needs to go through the ow meter in order to generate a

contact closure.

Flow Units

Name

Type

Select the units of measure for the water volume.

The name used to identify the sensor may be changed.

Select the type of sensor to be connected to the digital input channel.

5.2.15 Flow Meter, Paddlewheel Type

Input Details

The details for this type of input include the current ow rate, total volume accumulated through the ow meter,

alarms, and the current type of input setting.

Settings

Touch the Settings icon to view or change the settings related to the sensor.

Alarms

Deadband

Low and High Alarm limits may be set.

This is the Alarm Deadband. For example, if the High Alarm is 100, and the deadband is 1, the alarm will activate at 100 and deactivate at 99.

Totalizer Alarm

Enter the high limit on the total volume of water accumulated above which an alarm will be activated.

Reset Flow Total

Enter this menu to reset the accumulated ow total to 0. Touch Conrm to accept, Cancel to leave the total at the previous value and go back.

Set Flow Total

This menu is used to set the total volume stored in the controller to match the register

on the ow meter. Enter the desired value.

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Scheduled Reset

K Factor

Flow Units

Rate Units

Smoothing Factor

Name

Type

Choose to automatically reset the ow total, and if so, Daily, Monthly or Annually.

Enter the pulses generated by the paddlewheel per unit volume of water.

Select the units of measure for the water volume.

Select the units of measure for the ow rate time base.

The name used to identify the sensor may be changed.

Select the type of sensor to be connected to the digital input channel.

5.2.16 Feed Monitor

The Feed Monitor Digital Input type performs the following functions:

• Monitors a pulse signal from a pump (Iwaki PosiFlow, Tacmina Flow Checker, LMI Digital Pulse, etc)

• Totalizes the chemical feed and calculates the current ow rate

• Activates a Total Alarm if the feed exceeds a specied limit

• Activates a Flow verify alarm if the control output is ON and the feed monitor does not record any pulses

within a specied period of time.

Each Feed Monitor input can be linked to any type of output channel (powered relay, dry contact relay, solid state relay, or analog 4-20 mA) to validate chemical feed from any type of pump.

Total Alarm

The W900 monitors the total feed and activates a Total Alarm if the value exceeds the Totalizer Alarm set point. When used in conjunction with Scheduled Reset selections (Daily, Monthly, or Annually), this alarm can be used to alert users to situations where excess chemical product is used and/or to discontinue chemical feed if the amount

exceeds the set point during the specied time period.

While a Total Alarm is active, the linked pump will be controlled based on the Total Alarm Mode setting:

Interlock

Maintain

Flow Verify Alarm

The W900 monitors the status or current percent output of the channel linked to the feed monitor to determine if a Flow Verify alarm should be activated.

The Flow Alarm Delay setting (MM:SS) contains the time to trigger the alarm if the output is activated and no

pulses are registered. To avoid nuisance alarms at very low ow rates, if the linked output is a solid state relay (set

with a pulse proportional or PID control mode) or an analog 4-20 mA output, the alarm will only be activated if no

input pulses are monitored while the output is set to greater than a specied Dead Band (%).

The Flow Alarm Clear setting is the number of pulses that must be registered to verify that pump operation is restored and clear the Flow Verify alarm. During Flow Verify alarm conditions, the count of pulses registered will be reset to zero if no single pulses occur during the Flow Alarm Delay time period. In this manner, random single pulses spread over a long time period will not accumulate and result in a Flow Verify alarm being cleared before product feed is actually restored.

The output will be OFF while the alarm is active.

The alarm condition has no effect on output control.

If desired, a user can congure the feed monitor to attempt to reprime the pump when a Flow Verify alarm rst is

activated. The Reprime Time (MM:SS) species the amount of time that the output should be energized after the initiation of

a Flow Verify alarm. If the linked output is a solid state relay (set to a pulse proportional or PID control mode) or an analog 4-20 mA output, the output will be set to the Max Output percent during the reprime event. If the Flow

Verify alarm is cleared during the reprime event (because the specied number of pulses was registered), the reprime

event will be immediately ended and normal control of the output channel will be restored. While a Flow Verify alarm is active, the linked pump will be controlled based on the Flow Alarm Mode setting:

Page 62

Disabled

Interlock

Maintain

Flow Verify alarms are not monitored, no change in output control.

The output will be forced OFF while the alarm is active.(except during the reprime event)

The alarm condition has no effect on output control. (except during the reprime event)

If a Flow Verify alarm is active and Interlock is selected, the output to the pump will be turned off after the specied Reprime Time and only operator actions can restore normal control operations. In most cases, action will be taken

to manually reprime the pump, rell the chemical tank, etc. and the output will be put into Hand mode to conrm proper operation of the pump. When the Feed Monitor registers sufcient pulses, the Flow Verify alarm will clear

and the pump output can be put back into Auto Mode. If both Total Alarm and Flow Verify alarms are active simultaneously, an Interlock selection for either mode setting

will take precedence for pump control. Automatic output control will continue despite the alarm conditions only if Maintain is selected for both mode settings.

Interlocking or Activating any Control Output with a Feed Monitor Input

Digital Input channels are available for selection as Interlock Channels or Activate With Channels by any output. If a Feed Monitor is selected in this manner, the Digital Input will trigger that action if any alarm (Flow Verify, Total Alarm, or Range Alarm) is currently active.

Input Details

The details for this type of input include the current ow rate of chemical feed, the total volume fed since the last

reset, alarms, the status of the output linked to the input, the date and time of the last total reset, and the current type of input setting.

Settings

Touch the Settings icon to view or change the settings related to the sensor.

Totalizer Alarm

A high limit on the total accumulated volume of chemical fed may be set, to trigger a Total Alarm.

Reset Flow Total

Enter this menu to reset the accumulated ow total to 0. Touch Conrm to accept, Cancel

to leave the total at the previous value and go back.

Set Flow Total

This menu is used to set the total accumulated volume stored in the controller to match

a specied volume.

Scheduled Reset

Total Alarm Mode

Choose to automatically reset the ow total, and if so, Daily, Monthly or Annually

Choose to Interlock or Maintain the control of the linked pump while the Total Alarm is active.

Flow Alarm Mode

Choose to Interlock or Maintain the control of the linked pump while a Flow Verify

alarm is active. Choose Disable to monitor ow rate and accumulate total without any ow alarms.

Flow Alarm Delay

Time (MM:SS) that will trigger a Flow Verify alarm if the output is activated and no pulses are registered.

Flow Alarm Clear

Dead band

Enter the number of contacts that must be registered to clear a Flow Verify alarm.

Enter the percent output above which the pump is considered On for monitoring of Flow Verify alarms. This setting is only available if the linked Output is a solid state (pulsing) relay or analog (4-20 mA) output.

Reprime Time

Volume/Contact

Time (MM:SS) that the output should be energized for the reprime event.

Enter the volume, in ml, of chemical delivered for each pulse of the feed monitoring device.

Flow Units

Rate Units

Select the units of measure for the accumulated feed total.

Select the units of measure for the feed ow rate time base.

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Smoothing Factor

Increase the smoothing factor percentage to dampen the response to changes in the owrate. For example, with a 10% smoothing factor, the next reading shown will consist of an average of 10% of the previous value and 90% of the current value.

Output

Select the relay or analog (4-20 mA) output channel controlling the pump which will be monitored by this feed monitor input.

Name

Type

The name used to identify the sensor may be changed.

Select the type of sensor to be connected to the digital input channel

5.2.17 DI Counter Input

ONLY AVAILABLE IF HVAC MODES ARE DISABLED IN CONFIG MENU – GLOBAL SETTINGS

A digital input counter input is used to count contacts from a digital input, totalize the number of contacts, and monitor or control on the rate of contacts.

Input Details

The details for this type of input include the current rate, total contacts counted (in user dened units), date and

time of last total reset, alarms, and the current type of input setting.

Settings

Touch the Settings icon to view or change the settings related to the virtual input.

Totalizer Alarm

Reset Total

A high limit on the total number of contact closures accumulated may be set.

Enter this menu to reset the accumulated total to 0. Touch Conrm to accept, or Cancel

to leave the total at the previous value and go back.

Set Total

This menu is used to set the total number of contact closures stored in the controller a certain value.

Scheduled Reset

Units

Rate Units

Choose to automatically reset the ow total, and if so, Daily, Monthly or Annually.

Type in the units of measure for the what the contacts represent (widgets, etc.)

Select the units of measure for the rate time base (widgets per second, minute, hour, day).

Smoothing Factor

Increase the smoothing factor percentage to dampen the response to changes. For example, with a 10% smoothing factor, the next rate reading shown will consist of an average of 10% of the previous value and 90% of the current value.

Name

Type

The name used to identify the sensor may be changed.

Select the type of sensor to be connected to the digital input channel.

5.2.18 Virtual Input – Calculation

A Calculation type Virtual Input is not a physical sensor; it is a value that is calculated from two physical sensor

inputs. The analog values that can be used for each type of calculation are selected from a List of all dened sensor inputs, analog inputs, owmeter rates, the other virtual input, solid state relay %, and analog output %.

Calculation modes are:

• Difference (Input - Input 2)

• Ratio (Input / Input 2)

• This selection could be used to calculate Cycles of Concentration in HVAC applications, for example

• Total (Input + Input 2)

• % Difference [(Input - Input 2) / Input]

• This selection could be used to calculate % Rejection in RO applications, for example

Virtual Input Details

The details for any type of virtual input include the current value calculated, alarms, the status, and the input type.

Page 64

Settings

Touch the Settings icon to view or change the settings related to the virtual input.

Alarms

Deadband

Input

Constant

Input 2

Constant 2

Calculation Mode

Alarm Suppression

Low Range

High Range

Smoothing Factor

Name

Type

Low-Low, Low, High and High-High Alarms limits may be set.

This is the Alarm Deadband. For example, if the High Alarm is 7.00, and the deadband is 0.1, the alarm will activate at 7.01 and deactivate at 6.90.

Select the physical input or select Constant, whose value will be used in the calculation shown above as the Input in the formula.

Only appears if the Input selection is Constant. Enter the value.

Select the physical input or select Constant, whose value will be used in the calculation shown above as the Input 2 in the formula.

Only appears if the Input 2 selection is Constant. Enter the value.

Select a calculation mode from the list.

If any of the relays or digital inputs are selected, any alarms related to this input will be suppressed if the selected relay or digital input is active. Typically, this is used to

prevent alarms if there is no sample ow past the ow switch digital input.

Set the low end of the normal range for the calculated value. A value below this will trigger a Range Alarm and deactivate any control output using the virtual input.

Set the high end of the normal range for the calculated value. A value above this will trigger a Range Alarm and deactivate any control output using the virtual input.

The name used to identify the input may be changed.

Select the type of input; either Calculation, Redundant, Raw Value, Disturbance, or Not Used.

5.2.19 Virtual Input – Redundant

A Redundant type Virtual Input is not a physical sensor; it is a value that is calculated from two physical sensor inputs. The redundant sensor algorithm compares the readings from two sensors, and chooses which sensor to use. The value of the virtual input is the value of the sensor chosen by this comparison.

If the difference between the two exceeds a programmable amount, a deviation alarm is set, but control continues. If one of the sensors goes into a range error or a fault alarm, the other sensor will take over. If both sensors give invalid readings, an input alarm is set and any outputs using the virtual input for control are disabled.

The analog values that can be used for each type of calculation are selected from a List of all dened sensor inputs

and analog inputs.

There are three modes:

• Primary/Backup – The primary sensor (selected as the Input) value, as opposed to the backup sensor (selected as Input 2) value, is chosen as the virtual input value, assuming it has a valid reading.

• Minimum Value – The sensor that has the lower reading of the two sensors is chosen as the virtual input value. This makes sense if a failing sensor normally drifts high.

• Maximum Value – The sensor that has the higher reading of the two sensors is chosen as the virtual input value. This makes sense if a failing sensor normally drifts low.

Virtual Input Details

The details for a virtual input include the current difference calculated, the current values of the inputs used in the calculation, alarms, the status, and the input type.

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Settings

Touch the Settings icon to view or change the settings related to the virtual input.

Deviation Alarm

Enter the value for the difference between the two input readings above which the deviation alarm will trigger.

Deadband

This is the Alarm Deadband. For example, if the Deviation Alarm is 1.00, and the deadband is 0.1, the alarm will activate if the sensor readings are 1.01 units apart, and deactivate at 0.89 units apart.

Alarm Suppression

If any of the relays or digital inputs are selected, any alarms related to this input will be suppressed if the selected relay or digital input is active. Typically, this is used to

prevent alarms if there is no sample ow past the ow switch digital input.

Mode

Input

Input 2

Name

Type

Select which mode for determining the value for the virtual sensor input.

Select the physical input for the primary sensor.

Select the physical input for the backup sensor.

The name used to identify the input may be changed.

Select the type of input; either Calculation, Redundant, Raw Value, Disturbance, or Not Used.

5.2.20 Virtual Input – Raw Value

A Raw Value type Virtual Input is not a physical input. The value of the virtual input comes from the unmanipulated signal from a real sensor.

• non-temperature compensated µS/cm

• mV for pH, ORP, Disinfection, Generic

• mA for analog inputs

• ohms for temperature

Virtual Input Details

The details for a virtual input include the current raw value of the real input used, alarms, the status, and the input type.

Settings

Touch the Settings icon to view or change the settings related to the virtual input.

Alarms

Deadband

Low-Low, Low, High and High-High Alarms limits may be set.

This is the Alarm Deadband. For example, if the High Alarm is 7.00, and the deadband is 0.10, the alarm will activate at 7.01 and deactivate at 6.90.

Alarm Suppression

If any of the relays or digital inputs are selected, any alarms related to this input will be suppressed if the selected relay or digital input is active. Typically this is used to

prevent alarms if there is no sample ow past the ow switch digital input.

Input

Smoothing Factor

Select the physical input whose raw value will be used as this virtual input.

Name

Type

The name used to identify the input may be changed.

Select the type of input; either Calculation, Redundant, Raw Value, Disturbance, or Not Used.

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5.2.21 Virtual Input - Disturbance

A Disturbance type Virtual Input is not a physical input. The value of the virtual input is calculated from a real

sensor input plus an equation that denes the real sensor’s impact on a control output that is using a different real

sensor. A common example is controlling pH based upon a pH input signal, but modifying control based upon the

ow rate, with a Disturbance Type Virtual Input dening the impact of the ow rate on the control output.

Based on the disturbance input channel selection, minimum and maximum disturbance input readings, and de-

ned multiplier values at the min and max disturbance readings, this Virtual Input generates a value that is used to

multiply to a primary control value. Disturbance input channel values that result in a multiplier output of 1.0 have

no impact on the nal control output. The output value is restricted between low and high limits to allow more

complete control over the impact of disturbance inputs. The value of the multiplier at min disturbance can be either higher or lower than its value at max disturbance, depending upon what effect is desired on the control setpoint.

Value at Max Disturbance

Multiplier Value sent to Disturbance Algorithm

Value at Min Disturbance

Max Disturbance

Min Disturbance

Disturbance Input Value

Virtual Input Details

The details for a virtual input include the current multiplier value calculated, the current values of the inputs used in the calculation, alarms, the status, and the input type.

Settings

Touch the Settings icon to view or change the settings related to the virtual input.

Min Disturbance

Enter the value of the disturbance input where the value of the calculated multiplier will be the Value at Min Disturbance value (set below).

Max Disturbance

Enter the value of the disturbance input where the value of the calculated multiplier will be the Value at Max Disturbance (set below).

Value at Min Disturbance

Value at Max Disturbance

Enter the value of the multiplier that will occur when the disturbance input is at the Min Disturbance value.

Enter the value of the multiplier that will occur when the disturbance input is at the Max Disturbance value.

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Smoothing Factor

Disable Disturbance Channels

If any of the relays or digital inputs are selected, the multiplier value of the disturbance input is set to 1.0. if the selected relay or digital input is active. Typically this is used to stop using the disturbance function in case of an upset condition.

Disturbance Input

Name

Type

Select the real sensor input that will be used to modify the control output.

The name used to identify the input may be changed.

Select the type of input; either Calculation, Redundant, Raw Value, Disturbance, or Not Used.

5.3 Outputs Menu

Touch the Outputs icon from the Main Menu to view a list of all relay and analog outputs. The Page Down icon pages down the list of outputs, the Page Up icon pages up the list of outputs, the Main Menu icon brings back the previous screen. Touch an output to access that output’s details and settings. NOTE: When the output control mode or the input assigned to that output is changed, the output reverts to OFF mode. Once you have changed all settings to match the new mode or sensor, you must put the output into AUTO mode to start control.

5.3.1 Relay, Any Control Mode

Settings

Touch the Settings icon to view or change the settings related to the relay. Settings that are available for any control mode include:

HOA Setting

Output Time Limit

Reset Output Timeout

Interlock Channels

Activate With Channels

Minimum Relay Cycle

Hand Time Limit

Reset Time Total

Name

Mode

Select Hand, Off or Auto mode by touching the desired mode.

Enter the maximum amount of time that the relay can be continuously activated. Once the time limit is reached, the relay will deactivate until the Reset Output Timeout menu is entered.

Enter this menu to clear an Output Timeout alarm and allow the relay to control the process again.

Select the relays and digital inputs that will interlock this relay, when those other relays are activated in Auto mode. Using Hand or Off to activate relays bypasses the Interlock logic.

Select the relays and digital inputs that will activate this relay, when those other relays are activated in Auto mode. Using Hand or Off to activate relays bypasses the Activate With logic.

Enter the number of seconds that will be minimum amount of time that the relay will be in the active or inactive state. Normally this will be set to 0, but if using a motorized ball valve that takes time to open and close, set this high enough that the valve has time to complete its movement.

Enter the amount of time that the relay will activate for when it is in Hand mode.

Press the Conrm icon to reset the total accumulated on-time stored for the output back to 0.

The name used to identify the relay may be changed.

Select the desired control mode for the output.

5.3.2 Relay, On/Off Control Mode

Output Details

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Settings

Touch the Settings icon to view or change the settings related to the relay.

Set point

Deadband

Duty Cycle Period

Enter the sensor process value at which the relay will activate.

Enter the sensor process value away from the set point at which the relay will deactivate.

Using a duty cycle helps to prevent overshooting the set point in applications where the response of the sensor to chemical additions is slow. Specify the amount of time for the cycle, and the percentage of that cycle time that the relay will be active. The relay will

be off for the rest of the cycle, even if the set point has not been satised.

Enter the length of the duty cycle in minutes:seconds in this menu. Set the time to 00:00 if use of a duty cycle is not required.

Duty Cycle

Enter the percentage of the cycle period that the relay will be active. Set the percentage to 100 if use of a duty cycle is not required.

On Delay Time

Enter the delay time for relay activation in hours:minutes:seconds. Set the time to 00:00:00 to immediately activate the relay.

Off Delay Time

Enter the delay time for relay deactivation in hours:minutes:seconds. Set the time to 00:00:00 to immediately deactivate the relay.

Input

Direction

Select the sensor to be used by this relay.

Select the control direction.

5.3.3 Relay, Flow Timer Control Mode

Output Details

The details for this type of output include the relay on/off state, HOA mode or Interlock status, accumulated on-

time, remaining feed time, accumulated ow total, alarms related to this output, current cycle on time, relay type

and the current control mode setting.

Settings

Touch the Settings icon to view or change the settings related to the relay.

Feed Duration

Enter the amount of time for the relay to activate for once the accumulated volume through the water meter has been reached.

Accumulated Volume

Flow Input

Flow Input #2

Enter the volume of water to pass through the water meter required to trigger the chemical feed.

Select the input to be used to control this output.

Select the second owmeter input to be used to control this output if applicable. The sum of the two ow total volumes will be used to trigger the chemical feed.

5.3.4 Relay, Bleed and Feed Control Mode

ONLY AVAILABLE IF HVAC MODES ARE ENABLED IN CONFIG MENU – GLOBAL SETTINGS

Output Details

Settings

Touch the Settings icon to view or change the settings related to the relay.

Feed Time Limit

Bleed

Enter the maximum amount of feed time per bleed event

Select the relay to be used for Bleed/Blowdown

5.3.5 Relay, Bleed then Feed Control Mode

ONLY AVAILABLE IF HVAC MODES ARE ENABLED IN CONFIG MENU – GLOBAL SETTINGS

Output Details

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The details for this type of output include the relay on/off state, HOA mode or Interlock status, accumulated on-time, remaining feed time, the accumulated bleed time, alarms related to this output, current cycle on time, relay type and the current control mode setting.

Settings

Touch the Settings icon to view or change the settings related to the relay.

Feed Percentage

Feed Time Limit

Reset Timer

Bleed

Enter the % of bleed relay activation time to use for the feed relay activation time

Enter the maximum amount of feed time per bleed event

Use this menu to cancel the current feed cycle

Select the relay to be used for Bleed/Blowdown

5.3.6 Relay, Percent Timer Control Mode

Output Details

The details for this type of output include the relay on/off state, HOA mode or Interlock status, cycle time, accumulated on-time, alarms related to this output, current cycle on time, relay type and the current control mode setting.

Settings

Touch the Settings icon to view or change the settings related to the relay.

Sample Period

Feed Percentage

Enter the duration of the sample period.

Enter the % of the sample period time to use for the feed relay activation time

5.3.7 Relay, Biocide Timer Control Mode

ONLY AVAILABLE IF HVAC MODES ARE ENABLED IN CONFIG MENU – GLOBAL SETTINGS

Basic Timer Operation

This algorithm is typically used to provide a baseline amount of chlorine for disinfection, and periodically shocking the system with a larger dose. During normal operation, the relay will be reacting to the sensor to maintain a set point within a programmable Deadband, as described in On/Off Control Mode above. When a Spike event triggers, the algorithm will change from the normal set point to the Spike Set Point, for the programmed time. Once the time expires, control to the normal set point resumes.

Basic Biocide Operation

When a biocide event triggers, the algorithm will rst prebleed (if a prebleed is programmed) for the set amount of

prebleed time or down to the set prebleed conductivity. Then the biocide relay is turned on for the set duration. This is followed by a post-bio add lockout that blocks the bleed relay from turning on for a set amount of bleed lockout time.

Special Condition Handling

Prebleed If both a time limit and a conductivity limit are set, the time limit takes precedence. The bleed relay will turn off

once the time limit is reached or when the prebleed conductivity limit is reached (whichever occurs rst). If the

prebleed has a conductivity limit set, then the time limit can’t be set to zero, as this would allow the prebleed to last forever if the conductivity limit is never reached. Overlapping biocide events

If a second biocide event occurs while the rst one is still active (in prebleed, biocide add or lockout), the second

event will be ignored. An Event Skipped alarm will be set. Interlock Conditions Interlocks override the relay control, but do not change the operation of the timers or related bleed control.

A no-ow (or other interlock) condition does not delay a biocide add. The biocide add duration timer will continue even if the relay is locked out due to a no-ow or other interlock condition. This will prevent delayed biocide

adds which can potentially cause higher than expected biocide concentrations in the system when two biocides adds occur close to the same time. Not allowing delayed biocide adds will also prevent incompatible biocides getting added at close to the same time.

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“Activate With” Conditions “Activate with channels” settings override the relay control, but do not change the operation of the timers or related bleed control. The biocide timer continues counting biocide add time when the biocide relay is forced on, and ends at the expected time (biocide event start time plus duration). If the “activate with” condition continues after the end of the biocide feed time, the relay remains activated. Alarms An Event Skipped alarm is set when a second biocide event occurs while one event is still running (either in prebleed, biocide add or post-biocide add lockout). An Event Skipped alarm is also set when the biocide add relay never turns on during a biocide add because of an interlock condition. The alarm is cleared when the relay is next activated for any reason (the next timer event or HAND mode or “activate with” force on condition).

Output Details

The details for this type of output include the relay on/off state, HOA mode or Interlock status, accumulated on-time, alarms related to this output, current cycle on time, relay type and the current control mode setting. The current week number and day of the week is displayed (even if there is no multi-week repetition event programmed). Cycle Time shows the time counting down of the currently active part of the biocide cycle (pre-bleed, biocide feed, or post biocide feed lockout of the bleed).

Settings

Touch the Settings icon to view or change the settings related to the relay.

Event 1 (through 10)

Repetition

Enter these menus to program timer events via the menus below:

Select the time cycle to repeat the event: Daily, 1 Week, 2 Week, 4 Week, or None. An event means that the output is turned on at the same time of day, for the same amount of time, and except for the Daily cycle, on the same day of the week.

Week

Only appears if Repetition is longer than 1 Week. Select the week during which the event will occur.

Day

Only appears if Repetition is longer than Daily. Select the day of the week during which the event will occur.

Start Time

Duration

Bleed

Prebleed Time

Enter the time of day to start the event.

Enter the amount of time that the relay will be on.

Select the relay to be used for Bleed/Blowdown

If lowering the conductivity prior to feeding biocide is desired using a xed time instead of a specic conductivity setting, enter the amount of time for the pre-

bleed. Also may be used to apply a time limit on a conductivity based prebleed.

Prebleed To

If lowering the conductivity prior to feeding biocide is desired, enter the conductivity value. If no prebleed is required, or if a time-based prebleed is preferred, set the conductivity value to 0.

Cond Input

Bleed Lockout

Add Last Missed

Select the sensor to be used to control the prebleed relay selected above.

Enter the amount of time to lockout bleed after the biocide feed is complete.

Select Enabled if the controller should delay start the most recent Biocide cycle until immediately after an Interlock clears, or Disabled if all Biocide feed should be skipped if there is an Interlock condition at the time the add was due to start.

5.3.8 Relay, Alarm Output Mode

Output Details

Settings

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Touch the Settings icon to view or change the settings related to the relay.

Alarm Mode

Select the alarm conditions that will put the relay into the alarm state: All Alarms Selected Alarms

Select Alarms

Scroll through the list of all inputs and outputs, as well as System Alarms and Network (Ethernet) alarms. Touch the parameter to select alarms related to that parameter, then scroll through the list of alarms. Touch each alarm to check the

box indicating the alarm is selected. Touch the Conrm icon when nished with

that parameter to save the changes. Repeat for each input and output.

Output

Select if the relay will be active when in the alarm state (Normally Open) or if the relay will be active when not in the alarm state (Normally Closed).

5.3.9 Relay, Time Proportional Control Mode

Output Details

The details for this type of output include the relay on/off state, HOA mode or Interlock status, the current % on time calculated for the cycle, the current point in the cycle time, accumulated on-time, alarms related to this output, current cycle on time, relay type and the current control mode setting.

Settings

Touch the Settings icon to view or change the settings related to the relay.

Set point

Proportional Band

Enter the sensor process value at which the relay will be off for the entire Sample Period.

Enter the distance that the sensor process value is away from the set point at which the relay will be on for the entire Sample Period.

Sample Period

Input

Direction

Enter the duration of the sample period.

Select the sensor to be used by this relay.

Select the control direction.

5.3.10 Relay, Intermittent Sampling Control Mode

ONLY AVAILABLE IF HVAC MODES ARE ENABLED IN CONFIG MENU – GLOBAL SETTINGS

In an Intermittent Sampling with Proportional Blowdown control mode, the controller reads an analog input on a timed schedule, and the relay responds to maintain the conductivity value at the set point by activating for a programmable amount of time that varies with the deviation from the set point.

The relay goes through a sequence of activation/deactivation as described below. The intended purpose of this algorithm is boiler blowdown. A sample cannot be supplied to the sensor continuously in many boilers because a recirculating loop is not possible, and it would be a waste of hot water to constantly run a sample to a drain. A valve is opened intermittently to supply a sample to the sensor.

Where a non-ideal installation of the sensor can cause the sample to ash to steam, and give a false low reading,

this can be corrected by taking the reading with the sample held in the pipe with the sampling valve closed, so the sample is at boiler pressure and therefore back in the liquid state. Enable Trap Sample if this is the case. Because the conductivity reading cannot be trusted while the valve is open, the blowdown is timed rather than in direct re-

sponse to a sensor reading. Rather than relying upon a xed time, where the blowdown could be much longer than

necessary if the reading is just barely off the set point value, proportional blowdown adjusts the time appropriately.

If Trap Sample is Disabled, then the blowdown is not timed, and the Hold Time and Maximum Blowdown time are not used. The blowdown valve will stay open until the conductivity is below set point. In this case the Output Time Limit menu is available to stop the blowdown if the sensor is unresponsive.

Note that the software will not allow two relays using Intermittent Sampling to be assigned to the same sensor input; the previous relay set up will change to Off mode.

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Output Details

The details for this type of output include the relay on/off state, relay status (HOA mode, Interlock status, Intermittent Sampling cycle step, etc.), time remaining for the active Intermittent Sampling cycle step, alarms related to this output, current cycle on time, relay type, the live reading of the conductivity, and the current control mode setting.

Settings

Touch the Settings icon to view or change the settings related to the relay.

Set point

Proportional Band

Enter the conductivity value below which the controller will not start a blowdown cycle.

(only shown if trap sample is enabled) Enter the conductivity value above the set point at which the maximum blowdown time will occur. For example, if the Set point is 2000 uS/cm, and the Proportional Band is 200 uS/cm, then if the conductivity is above 2200 uS/cm the blowdown valve will open for the Maximum Blowdown time described below. If the conductivity of the trapped sample is 2100 uS/cm, the blowdown valve will open for half the Maximum Blowdown time.

Deadband

(only shown if trap sample is disabled) Enter the sensor process value away from the set point at which the relay will deactivate.

Sample Time

Enter the length of time the blowdown valve will be open in order to capture a fresh sample of boiler water.

Hold Time

(only shown if trap sample is enabled) Enter the length of time the blowdown valve will be closed in order to ensure that the captured sample is at boiler pressure.

Maximum Blowdown

(only shown if trap sample is enabled) Enter the maximum length of time that the blowdown valve will be open, when the conductivity of the captured sample is above the set point plus the proportional band.

Wait Time

Trap Sample

Cond Input

Enter the time to wait to sample the water again once the captured sample is below set point.

Enable or disable trapping of the sample.

Select the sensor to be used by this relay.

5.3.11 Relay, Manual Mode

Output Details

Settings

A Manual relay will activate if the HOA mode is Hand, or if it is Activated With another channel.

On Delay Time

Enter the delay time for relay activation in hours:minutes:seconds. Set the time to 00:00:00 to immediately activate the relay.

Off Delay Time

Enter the delay time for relay deactivation in hours:minutes:seconds. Set the time to 00:00:00 to immediately deactivate the relay.

5.3.12 Relay, Pulse Proportional Control Mode

ONLY AVAILABLE IF CONTROLLER INCLUDES PULSE OUTPUT HARDWARE

Output Details

The details for this type of output include the relay pulse rate, HOA mode or Interlock status, accumulated on-time, alarms related to this output, current cycle on time, relay type and the current control mode setting.

Settings

Touch the Settings icon to view or change the settings related to the relay.

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Set point

Proportional Band

Minimum Output

Maximum Output

Maximum Rate

Input

Direction

Enter the sensor process value at which the output will pulse at the Minimum Output % set below.

Enter the distance that the sensor process value is away from the set point beyond which the output will be pulsing at the Maximum Output % set below.

Enter the lowest possible pulse rate as a percentage of the Maximum Stroke Rate set below (normally 0%).

Enter the highest possible pulse rate as a percentage of the Maximum Stroke Rate set below.

Enter the maximum pulse rate that the metering pump is designed to accept (10 - 360 pulse/minute range).

Select the sensor to be used by this relay.

Set the control direction.

5.3.13 Relay, PID Control Mode

ONLY AVAILABLE IF CONTROLLER INCLUDES PULSE OUTPUT HARDWARE & HVAC MODE IS DISABLED The PID algorithm controls a solid state relay using standard Proportional-Integral-Derivative control logic. The

algorithm provides feedback control based on an error value continuously calculated as the difference between a measured process variable and a desired set point. Tuning settings specify the response for proportional (the size of the error), integral (the time that the error has been present), and derivative (the rate of change for the error) parameters. With proper tuning, the PID control algorithm can hold the process value close the set point while minimizing overshoot and undershoot.

Normalized Error

The error value versus set point that is calculated by the controller is normalized and represented as percent of full scale. As a result, tuning parameters entered by the user are not dependent upon the scale of the process variable and the PID response with similar settings will be more consistent even when using different types of sensor inputs.

The scale used to normalize the error is dependent upon the type of sensor selected. By default, the full nominal range of the sensor is used. This range is editable by the user if tighter control is desired.

PID Equation Formats

The controller supports two different forms of the PID equation as specied by the Gain Form setting. The two

forms require different units for entry of the PID tuning parameters.

Standard

The standard form is more commonly used in industry because its time-based settings for the integral and deriva-

tive coefcients are more meaningful. This form is selected by default.

Parameter Description Units

Gain unitless

Integral Time seconds or seconds/repeat

Derivative Time seconds

de(t)

Output (%) = Kp e(t) + f e(t)dt + Td

Parameter Description Units

e(t) Current Error % of full scale

dt Delta Time Between Readings seconds

de(t) Difference Between Current Error & Previous Error % of full scale

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Parallel

The parallel form allows the user to enter all parameters as Gains. In all cases, larger gain values result in faster output response.

Parameter Description Units

Proportional Gain unitless

Integral Gain 1/seconds

Derivative Gain seconds

Output (%) = Kp e(t) + Ki f e(t)dt + Kd

de(t)

Integral Value Management

To determine the integral component of the PID calculation, the controller software must maintain a running total of the accumulated area under the error curve (Current Integral). The sign of the value added to the accumulated Current Integral during each cycle may be positive or negative based on the current Direction setting as well as the relative values of the current process reading and the set point.

Override Control

The Current Integral accumulates when the output is set to Auto mode. If the controller is switched to Off mode, the value no longer accumulates, but it is not cleared. Therefore, PID control will resume where it left off if the controller is switched from Off back to Auto. Similarly, accumulation of the Control Integral will be suspended if the output is interlocked and resume after the lock-out is removed.

Bumpless Transfer

When the output is switched from Hand to Auto mode, the controller calculates a value for the Current Integral using the current error to generate the same output percent as the Hand Output setting. This calculation does not

use the Derivative tuning setting to minimize errors from momentary uctuations in the input signal. This feature

ensures a smooth transition from manual to automatic control with minimal overshoot or undershoot as long as the user sets the Hand Output percentage close to the value that the process is expected to require for optimal control in Auto mode.

Wind-up Suppression

The Current Integral value that is accumulating while the output is set to Auto can become very large or very small if the process value remains on the same side of the set point for a prolonged period of time. However, the controller may not be able to continue to respond if its output is already set to the minimum or maximum limits (0-100% by default). This condition is referred to as Control Wind-Up and can result severe overshoot or undershoot after a prolonged upset has ended.

For example, if the process value remains far below the set point despite a control output being pinned at 100%,

the Current Integral will continue to accumulate errors (wind-up). When the process value nally rises to above the

set point, negative errors will begin to decrease the Current Integral value. However, the value may remain large

enough to keep the output at 100% long after the set point is satised. The controller will overshoot the set point

and the process value will continue to rise. To optimize system recovery after wind-up situations, the controller suppresses updates to the Current Integral

that would drive the output beyond its minimum or maximum limit. Ideally, the PID parameters will be tuned and the control elements (pump, valves, etc.) will be sized properly so that the output never reaches its minimum or maximum limit during normal control operations. But with this wind-up suppression feature, overshoot will be minimized should that situation occur.

Output Details

The details for this type of output include the pulse rate in %, HOA mode or Interlock status, input value, current integral, current and accumulated on-times, alarms related to this output, relay type, and the current control mode setting.

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Set Point

Gain

Proportional Gain

Integral Time

Integral Gain

Derivative Time

Derivative Gain

Reset PID Integral

Minimum Output

Maximum Output

Maximum Rate

Input

Direction

Input Minimum

Input Maximum

Gain Form

Numeric entry of a process value used as a target for PID control. The default value,

units and display format (number of decimal places) used during data entry are dened

based on the Input channel setting selected.

When the Gain Form setting is Standard, this unitless value is multiplied by the total of the proportional, integral, and derivative terms to determine the calculated output percent.

When the Gain Form setting is Parallel, this unitless value is multiplied by the normalized error (current process value versus set point) to determine the proportional component of the calculated output percent.

When the Gain Form setting is Standard, this value is divided into the integral of the normalized error (area under the error curve), then multiplied by the Gain to determine the integral component of the calculated output percent.

When the Gain Form setting is Parallel, this value is multiplied by the integral of the normalized error (area under the error curve) to determine the integral component of the calculated output percent.

When the Gain Form setting is Standard, this value is multiplied by the change in error between the current reading and the previous reading, then multiplied by the Gain to determine the derivative component of the calculated output percent.

When the Gain Form setting is Parallel, this value is multiplied by the change in error between the current reading and the previous reading to determine the derivative component of the calculated output percent.

The PID Integral Value is a running total of the accumulated area under the error curve (Current Integral). When this menu option is selected, this total is set to zero and the PID algorithm is reset to its initial state.

Enter the lowest possible pulse rate as a percentage of the Maximum Stroke Rate set below (normally 0%).

Enter the highest possible pulse rate as a percentage of the Maximum Stroke Rate set below.

Enter the maximum pulse rate that the metering pump is designed to accept (10 – 480 pulse/minute range).

Select the sensor to be used by this relay

Set the control direction. This setting is used to determine the sign of the calculated error

(current process value versus set point) and allows exible control with only positive

values for all PID tuning parameters.

The low end of the sensor input range, used to normalize errors into percent of full scale units. These values are set to the nominal range of the selected input sensor by default.

The high end of the sensor input range, used to normalize errors into percent of full scale units. These values are set to the nominal range of the selected input sensor by default.

Select the PID Equation Format used to enter tuning parameters.

5.3.14 Relay, Dual Set Point Mode

Output Details

Settings

Touch the Settings icon to view or change the settings related to the relay.

Set point

Set point 2

Deadband

Enter the rst sensor process value at which the relay will activate.

Enter the second sensor process value at which the relay will activate.

Enter the sensor process value away from the set point at which the relay will deactivate.

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Duty Cycle Period

be off for the rest of the cycle, even if the set point has not been satised.

Enter the length of the duty cycle in minutes:seconds in this menu. Set the time to 00:00 if use of a duty cycle is not required.

Duty Cycle

Enter the percentage of the cycle period that the relay will be active. Set the percentage to 100 if use of a duty cycle is not required.

On Delay Time

Enter the delay time for relay activation in hours:minutes:seconds. Set the time to 00:00:00 to immediately activate the relay.

Off Delay Time

Enter the delay time for relay deactivation in hours:minutes:seconds. Set the time to 00:00:00 to immediately deactivate the relay.

Input

Direction

Select the sensor to be used by this relay.

Select the control direction. In Range will activate the relay when the input reading is between the two set points. Out of Range will activate the relay when the input reading is outside the two set points.

5.3.15 Relay, Timer Control Mode

ONLY AVAILABLE IF HVAC MODES ARE DISABLED IN CONFIG MENU – GLOBAL SETTINGS

Basic Timer Operation

When a timer event triggers the algorithm will activate the relay for the programmed time.

Special Condition Handling

Overlapping timer events

If a second timer event occurs while the rst one is still active, the second event will be ignored. An Event

Skipped alarm will be set. Interlock Conditions Interlocks override the relay control, but do not change the operation of the timer control. A digital input or output interlock condition does not delay the relay activation. The relay activation duration timer will continue even if the relay is deactivated due to an interlock condition. This will prevent delayed events which can potentially cause problems in they do not occur at the correct time. “Activate With” Conditions “Activate with channels” settings override the relay control, but do not change the operation of the timer control. The relay activation duration timer continues counting when the timer relay is forced on, and ends at the expected time (event start time plus duration). If the “activate with” condition continues after the end of the event time, the relay remains activated. Alarms An Event Skipped alarm is set when a second timer event occurs while one event is still running. An Event Skipped alarm is also set when the timer relay never turns on during an event because of an interlock condition. The alarm is cleared when the relay is next activated for any reason (the next timer event or HAND mode or “activate with” force on condition).

Output Details

The details for this type of output include the relay on/off state, HOA mode or Interlock status, accumulated ontime, alarms related to this output, current cycle on time, relay type and the current control mode setting. The current week number and day of the week is displayed (even if there is no multi-week repetition event programmed). Cycle Time shows the time counting down of the currently active part of the timer cycle.

Settings

Touch the Settings icon to view or change the settings related to the relay.

Event 1 (through 10)

Enter these menus to program timer events via the menus below:

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Repetition

Select the time cycle to repeat the event: Hourly, Daily, 1 Week, 2 Week, 4 Week, or None. An event means that the output is turned on at the same time of day, for the same amount of time, and except for the Daily cycle, on the same day of the week.

Week

Only appears if Repetition is longer than 1 Week. Select the week during which the event will occur.

Day

Only appears if Repetition is longer than Daily. Select the day of the week during which the event will occur.

Events Per Day

Only appears if Repetition is Hourly. Select the number of events per day. The events occur on the Start Time and then evenly spaced throughout the day.

Start Time

Duration

Add Last Missed

Enter the time of day to start the event.

Enter the amount of time that the relay will be on.

5.3.16 Relay, Probe Wash Control Mode

Basic Timer Operation

When a Probe Wash event triggers, the algorithm will activate the relay for the programmed time. The relay will activate a pump or valve to supply a cleaning solution to the sensor or sensors. The output of the selected sensors will either be held or disabled during the cleaning cycle, and for a programmable hold time after the cleaning cycle.

Special Condition Handling

Overlapping timer events

If a second timer event occurs while the rst one is still active, the second event will be ignored. An Event Skipped

alarm will be set. Interlock Conditions Interlocks override the relay control, but do not change the operation of the timer control. A digital input or output interlock condition does not delay the relay activation. The relay activation duration timer

will continue even if the relay is deactivated due to an interlock condition. This will prevent delayed events which can potentially cause problems in they do not occur at the correct time.

“Activate With” Conditions “Activate with channels” settings override the relay control, but do not change the operation of the timer control.

The relay activation duration timer continues counting when the timer relay is forced on, and ends at the expected time (event start time plus duration). If the “activate with” condition continues after the end of the event time, the relay remains activated.

Alarms An Event Skipped alarm is set when a second timer event occurs while one event is still running. An Event Skipped alarm is also set when the timer relay never turns on during an event because of an interlock

condition. The alarm is cleared when the relay is next activated for any reason (the next timer event or HAND mode or “acti-

vate with” force on condition).

Output Details

Settings

Touch the Settings icon to view or change the settings related to the relay.

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Event 1 (through 10)

Events Per Day

Input

Input 2

Sensor Mode

Hold Time

Repetition

Week

Day

Start Time

Duration

Enter these menus to program timer events via the menus below:

Only appears if Repetition is longer than 1 Week. Select the week during which the event will occur.

Only appears if Repetition is longer than Daily. Select the day of the week during which the event will occur.

Only appears if Repetition is Hourly. Select the number of events per day. The events occur on the Start Time and then evenly spaced throughout the day.

Enter the time of day to start the event.

Enter the amount of time that the relay will be on.

Select the sensor that will be washed.

Select the second sensor, if applicable, that will be washed.

Select the effect that the probe wash event will have on any control outputs that use the sensor(s) being washed. The options are to either Disable the sensor readings (turn the control output off) or Hold the sensor reading at the last valid sensor reading prior to the start of the probe wash event.

Enter the amount of time needed to hold the sensor reading after the event has nished, in order for the wash solution to be replaced by process solution.

5.3.17 Relay, Spike Control Mode

Basic Timer Operation

the onset time expires, whichever comes rst) before starting the spike Duration timer.

Special Condition Handling

Overlapping timer events

If a second timer event occurs while the rst one is still active, the second event will be ignored. An Event Skipped

will continue even if the relay is deactivated due to an interlock condition. This will prevent delayed events which can potentially cause problems in they do not occur at the correct time.

“Activate With” Conditions “Activate with channels” settings override the relay control, but do not change the operation of the timer control.

Alarms An Event Skipped alarm is set when a second timer event occurs while one event is still running.

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An Event Skipped alarm is also set when the timer relay never turns on during an event because of an interlock condition.

The alarm is cleared when the relay is next activated for any reason (the next timer event or HAND mode or “activate with” force on condition).

Output Details

The details for this type of output include the relay on/off state, HOA mode or Interlock status, accumulated ontime, current cycle on time, relay type and alarms. The current week number and day of the week is displayed (even if there is no multi-week repetition event programmed). Cycle Time shows the time counting down of the currently active part of the cycle.

Settings

Press the Settings key view or change the settings related to the relay.

Set point

Spike Set point

Enter the sensor process value at which the relay will activate.

Enter the sensor process value at which the relay will activate during the Spike Event time.

Deadband

Enter the sensor process value away from the set point at which the relay will deactivate. The same Deadband is used for the normal Set Point and the Spike Set Point.

Onset Time

The onset time determines when the duration timer starts. If set to zero, the duration time starts immediately. If set higher than that, the controller will not start the duration timer until the spike set point is achieved, or until the onset time is over,

whichever comes rst.

Duty Cycle Period

been satised.

Enter the length of the Duty Cycle Period in minutes:seconds in this menu. Set the time to 00:00 if use of a duty cycle is not required.

Duty Cycle

Enter the percentage of the cycle period that the relay will be active. Set the percentage to 100 if use of a duty cycle is not required.

Event 1 (through 8)

Repetition

Enter these menus to program spike events via the menus below:

Week

Only appears if Repetition is longer than 1 Week. Select the week during which the event will occur.

Day

Only appears if Repetition is longer than Daily. Select the day of the week during which the event will occur.

Start Time

Duration

Input

Direction

Enter the time of day to start the event.

Enter the amount of time that the relay will be on.

Select the sensor to be used by this relay.

Select the control direction.

5.3.18 Relay Output, Flow Proportional Mode

ONLY AVAILABLE IF CONTROLLER INCLUDES PULSE OUTPUT HARDWARE

Overview

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In Flow Proportional control mode, the controller monitors the rate of ow through an analog or digital ow meter,

and continuously adjusts the proportional band to achieve a target PPM level.

The user enters the target PPM and the data necessary to calculate the proportional band (the water ow rate at which the maximum pulse rate will occur) required to maintain the target PPM with that ow rate of water.

% output = Target PPM x Water Flow Rate (liter/min or gal/min)

Cycles x Pump Capacity (liter or gal/hr) x Pump Setting (%) x Specic Gravity x 166.67

% output = Target PPM x Water Flow Rate (m3⁄min)

Cycles x Pump Capacity (liter/hr) x Pump Setting (%) x Specic Gravity x 0.16667

Control Operation

If the output is continuously on for longer than the Output Time Limit, then output will deactivate.

Output Details

The details for this type of output include the output %, HOA mode or Interlock status, alarms related to this

output, ow input value, current cycle on time, total accumulated on-time, raw pulse rate output, and the current

control mode setting.

Settings

Touch the Settings icon to view or change the settings related to the relay.

Target

Pump Capacity

Pump Setting

Specic Gravity

Maximum Rate

Hand Output

Flow Input

Enter the desired PPM set point for the product.

Enter the maximum ow rate for the metering pump

Enter the stroke length setting for the metering pump, in percent

Enter the specic gravity of the product to be added.

Enter the maximum pulse rate that the metering pump is designed to accept (10 - 360 pulse/minute range).

Enter the output % desired when the output is in Hand mode

Select the ow meter to be used as an input for this control relay

5.3.19 Relay or Analog Output, Lag Control Mode

NOT AVAILABLE FOR VIRTUAL OUTPUTS

Overview

The Lead Lag control mode allows a group of outputs to be controlled by a single control algorithm using a variety

of congurations. The control mode support backup pumps operation, alternate pump with wear leveling, and the

activation of additional outputs after a time delay, or based on alternate set points, or based on digital state changes.

A Lead Lag group consists of a single Lead output and one or more Lag outputs. The Lead output can be set to any control mode. The new Lag control mode can be selected for any number of additional outputs (limited only by the number of outputs available within the controller). A setting for each Lag output allows selection of a Lead output that is used to create an ordered group of Lead Lag relays.

Example: R1 is an On/Off relay, R2 is set for Lag mode with a Lead output of R1. R3 is set as an additional Lag mode relay with a Lead output of R2, thus creating an ordered chain of three relays in the Lead Lag group

(R1←R2←R3). After the group is dened, the Lead output (R1) operates with the standard On/Off Control functionality. The last Lag mode relay in the chain (R3) offers various settings that are used to dene the desired control

operations for the entire Lead Lag group. Selectable Lead Lag control options include backup, wear leveling, and/ or activating additional outputs based on various criteria.

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Backup Pump Control

By default, Lead Lag groups always provide backup operation if the Lead control mode determines that its output should be energized but it is disabled due to a Flow Verify alarm and/or because the Lead output HOA setting is Off or Hand (not in Auto mode).

Wear Leveling Modes

The order of Lead and Lag output activation can be changed based on congurable wear leveling modes. This

option is intended to allow users to manage the usage of primary and secondary pumps within a system. One wear leveling mode selects a different output each time the group is activated. Additional modes vary the activation of the pumps within the group based on the time-on for each output, with the intent to either balance the usage of each pump or to energize the primary output most often and periodically exercise auxiliary pumps to insure proper operation when they are needed.

Output Activation Modes

Depending on the control mode selected for the Lead output, Lag output(s) can be congured for activation of

additional outputs based on one or more of the following criteria: On-time (for example, energize a second relay 10 minutes after the primary relay is turned on) Control set points (for example, energize a second relay if the pH continues to rise) Switch change (for example, energize a second pump to maintain a tank level when the low-low level switch opens

Control Operation

Backup Pump Control

The default control operation for the Lead Lag group is that if a condition exists that prevents one relay from being activated, it is skipped and the next output in the group is turned on instead. This situation may occur if the output is experiencing an active Flow Verify alarm or the output is not in Auto mode. Backup control using a Lag output does not require any additional settings and could be used to create an output for a backup pump to be activated only if the main pump loses prime and/or is taken out of service for maintenance.

Example: A Lead Lag group consisting of R1, R2 & R3 is congured (R1←R2←R3). All three pumps have PosiFlow monitors wired to inputs D1, D2 & D3, respectively. R1 uses On/Off mode to control caustic feed to maintain a pH set point above 7.0. R1 and R3 pumps are in Auto mode, R2 pump has been taken out of service for maintenance and is currently in HOA Off mode. The process pH falls below 7.0 and R1 is energized. Before the pH rises to satisfy the dead band, the D1 PosiFlow input monitors an error condition and activates a Flow Verify alarm for the R1 pump. The Lead Lag system de-energizes R1 and checks the status of R2. Because R2 is not is service, R3 is energized to maintain caustic feed.

Each digital input channel set up as a Feed Monitor type has a Flow Alarm Mode setting used to specify how the

pump output is handled when Flow Verify alarms are identied. Based on this setting, the Lead Lag group responds

as follows:

Disabled

The Flow Verify alarm is never activated and the Lead Lag group is not affected by the status of the PosiFlow input.

Interlock

When a Flow Verify alarm is activated, the related output is immediately turned off; if available, other outputs in the Lead Lag group are activated instead.

Maintain

When a Flow Verify alarm is activated, other outputs in the Lead Lag group are activated instead if they are available; if no other outputs are available, or if additional outputs are required due to Output Activation Mode settings, output(s) reporting a Flow Verify alarm may still be activated as a last resort.

Wear Leveling Modes

After the Lead Lag group is dened, additional parameters can be congured within the settings list of the last output in the group. These options optimize the behavior of the Lead Lag functionality. Several different wear leveling options can be selected to control the order in which outputs are activated.

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Disabled

The order in which the Lead and Lag outputs turn on does not change automatically. They are always energized in the same order.

Duty Based

The order in which outputs are activated changes every time the Lead output is activated. How long each individual pump has been running is not considered.

Example: When the Lead output, set for On/Off control, drops below the setpoint, R1 is activated. R1 turns off

after its deadband is satised. The next time the measurement goes below the setpoint, R2 is activated and R1

remains off. After all outputs in the group have been exercised for one feed cycle, the process begins again with the

rst output (R1).

Time Balanced

Time balanced mode alternates outputs in a manner that equalizes the runtime of all connected pumps. This mode takes into account how long each output in the Lead Lag group has been running (since a manual reset) and selects

the output that has the lowest on-time during each cycle. If the output remains energized longer than the specied

cycle time, the time-on for each output is recalculated and a different output may be activated to balance the usage of each.

Example: In a two-pump Lead Lag group, time balanced wear leveling is selected with a cycle time of 2 hours. When the Lead control mode (R1) determines the output should be activated, R2 turns on because it has the lowest accumulated on-time. After 2 hours, if the output remains activated, the on-times are re evaluated and R2 turns off and R1 turns on because it now has the least accumulated total on time. The cycle continues until the Lead control mode determines the feed is complete.

Time Unbalanced

This wear leveling mode improves fault-tolerance of the group by varying the wear on each pump by activating each pump for a different percentage of time. In this mode, a primary output is activated most of the time and secondary (auxiliary) output(s) are activated for a smaller percentage of the total output on-time. This strategy can be

useful to ensure that a backup pump is exercised sufciently so that it will be functional when needed, but does not

wear at the same rate as the primary pump to minimize the chances of both pumps failing at the same time. When

one Lag pump is dened within the Lead Lag group, the Lead pump runs 60% of the time and the Lag pump runs 40%. If more than two (2) pumps are dened for the group, xed ratios are used to insure all pumps are exercised

periodically and wear at different rates, as shown in the chart.

Percent On Number of Relays

Relay 2 3 4 5 6

1 60.0% 47.4% 41.5% 38.4% 36.5%

2 40.0% 31.6% 27.7% 25.6% 24.4%

3 21.1% 18.5% 17.1% 16.2%

4 12.3% 11.4% 10.8%

5 7.6% 7.2%

6 4.8%

Output Activation Modes

Depending on the current control mode selection for the Lead output, additional settings may be available within the settings list of the last output in the group to provide additional option(s) to optimize the behavior of the Lead Lag functionality. Several different activation modes can be selected to control the status of additional output(s) based on either elapsed time, alternate setpoints, and/or alternate switch inputs.

Disabled

No action is taken to activate more than one output within the Lead Lag group of outputs. This mode is used when a group of Lead Lag outputs exists only to provide backup in case of a Flow Verify failure on one of the pumps, or if a pump is taken out of service, and/or if only wear leveling is desired.

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Time Based

Lag outputs are activated following the Lead output after a user-settable delay. The same delay value is used for all outputs. This menu selection is available only when the Lead output is using On/Off, Dual Setpoint, Spike or Manual control modes.

Example: If the Lead output is set to Manual, this control option could be used to force on the output based on a

digital input signal (e.g., level switch). If the level switch remains open for more than the specied delay time, the

second output in the Lead Lag group is energized. If another delay time elapses, a third output (if available) is also turned on.

In On/Off, Dual Setpoint, or Spike control modes, additional pump(s) are energized if the process value remains

outside the setpoint range for more than the specied delay time.

Example: In a two-output Lead Lag group (R1←R2), the Lead (R1) output, set for Dual Setpoint control, is programmed to energize its output when the D.O. reading is outside the 4.0-4.5 ppb control range with a deadband of

0.1 ppb. Time based output activation is selected with a delay time of 15 minutes. When the D.O. value falls below

4.0 ppb, R1 is activated. After 15 minutes, if the D.O. has not risen to 4.1 ppb or higher, R2 will also be activated. When the process value reaches 4.1 ppb, both outputs are turned off.

Setpoint Based

Each Lag output has its own setpoint(s) and deadband when this option is selected. The setpoints for each output in the Lead Lag group are evaluated individually and outputs are added as needed based on the current process

value. Setpoint based activation mode also incorporates time based activation and can also be congured to trigger an additional pump (if available) after a specied delay time. This menu selection is available only when the Lead

output is using On/Off or Dual Setpoint control modes.

Example 1: The Lead output (R1) is set for On/Off control of pH with a setpoint of 8.50, a deadband of 0.20 and

a “force lower” control direction. The rst Lag output (R2) has a setpoint of 9.00 and a deadband of 0.20. The second Lag output (R3) has a setpoint of 9.50 and a deadband of 0.20. The delay time is disabled (set for 0:00 minutes). Wear leveling is disabled. When the pH goes above 8.50, R1 energizes. If the pH proceeds to exceed 9.00, R2 energizes. And if the pH rises above 9.50, R3 energizes. When the pH decreases to below 9.30, R3 goes off. When the pH falls to below 8.80, R2 goes off. And nally, when the pH decreases to below 8.30, R1 is turned off.

Example 2: The same three-pump conguration (R1←R2←R3) as in Example 1 except the delay time is set for 30 minutes. When the pH goes above 8.50, R1 energizes. If 30 minutes passes before the pH exceeds 9.00 or drops below 8.30, R1 remains on and R2 is energized. If the pH then rises above 9.00, the next output in the group, R3, is energized. If the pH continues to rise and exceeds 9.50, no additional action is possible. When the pH decreases to

below 8.80, R3 goes off. When the pH falls to below 8.30, both R1 and R2 are turned off.

This control is very similar to the operation if three (3) separate On/Off control outputs are congured all with the

pH as Input and using the setpoints listed above. However, the Lead Lag option improves on this control by incorporating backup pump controls and optional time based activation. If the pH rises above 8.50 when pump R1 has an active Flow Verify alarm or is in HOA Off mode, pump R2 immediately energizes. R3 energizes when the pH goes above 9.00. Although no third pump is available to activate if the pH continues to rise above 9.50, this control system is more fault tolerant than the currently available options.

Switch Based

When using switch based activation mode, each Lag output has an Activate With Channels setting that is used to specify one or more digital input or relay output channels that activates an additional output. Switch based

activation mode incorporates time based activation and can also be congured to trigger an additional output (if available) after a specied delay time. This menu selection is available only when the Lead output is using Manual

control mode.

Example 1: A lift station includes a tank with a high level switch (D1) and a high-high level switch (D2). Three

pumps are congured as a Lead Lag group (R1←R2←R3). The Lead output (R1) is set for Manual control mode with an Activate With Channels selection of D1 (high level switch), R1 will be energized if D1 closes. The rst Lag

output (R2) has an Activate With Channels selection of D2 (high-high level switch). The last Lag output (R3) has no Activate With Channels selected. All pumps are in HOA Auto mode. The delay time is disabled (set for 0:00 minutes). Wear leveling is disabled. When the high level switch closes, the R1 pump is activated. If the high-high

Page 84

level switch closes, the R2 pump is also activated. When D2 opens, R2 is turned off. When D1 opens, R1 is turned

off. In this conguration, the R3 pump serves only as a backup in case one of the pumps is down for maintenance

(in HOA Off mode).

Example 2: The same lift station, two-level switches, three-pump conguration (R1←R2←R3) as in Example 1

except the delay time is set for 1 hour. When the high level switch closes, the R1 pump is activated. If the high-high level switch closes, the R2 pump is also activated. If the tank level remains above the high-high level switch for another 1 hour, the R3 pump is activated. When D2 opens, R3 is turned off. When D1 opens, both R2 and R1 are

turned off. In this conguration, the R3 pump serves not only as a backup in case one of the pumps is down for

maintenance, but also provides additional capacity should it be needed.

Advanced Functionality

The examples listed above detail the control behavior if wear leveling or output activation modes are enabled. The features are implemented independently. Wear Leveling modes are used to determine which output(s) are activated. Output Activation modes determine how many output(s) are activated at one time. More advanced output control strategies can be implemented when these features are used in combination.

Example: In a two-pump scenario, the Lead output (R1) is set for On/Off control of pH with a setpoint of 8.50, deadband of 0.20 and a “force lower” control direction. The Lag output (R2) has a setpoint of 9.00 and a deadband of 0.20. Time unbalanced (60/40) wear leveling is selected with a cycle time of 15 minutes. When the pH goes above 8.50, the on-times for each pump are evaluated. If R1 has been on less than 80% of the total time for the two pumps, it is energized. Otherwise, R2 has been on for less than 20% of the total time, so it is energized. If the pH

remains above the deadband and does not exceed the second setpoint (8.30 < pH < 9.00), the pump selection is

re-evaluated every 15 minutes and, if warranted, the pump in operation is switched. If the pH proceeds to exceed

9.00, both pumps are energized and wear leveling is no longer a consideration. When the pH fails to below 8.80,

the pump on-times are again evaluated and the appropriate pump is turned off.

Note that while this control is quite powerful, it might cause confusion with users because the setpoints entered

for a specic pump within the Lead Lag group may not coincide with the setpoints used to activate that particular pump during operation. The information shown on the Details pages for each pump should be sufcient to mini-

mize this ambiguity.

Control Mode Conicts

Some control modes are incompatible with Lag output functionality because of an interactive relationship between the output and one or more linked inputs:

• Intermittent Sampling – This control mode places a linked sensor into a Hold state during most of its operational cycle

• Probe Wash – This control mode places one or two linked sensors into a Hold state when a wash cycle is in

progress and for a specied Hold period afterward

The link between the output and the sensor input(s) cannot be easily transferred to other outputs, so these types of

control modes cannot be designated as Lead output for a Lead Lag group. Outputs congured with these types of

control modes are not included on the selection list presented for Lead output. Also, the control mode of an output that is the Lead output for a Lead Lag group cannot be changed to one of these types. If selected, the controller will be unable to save the change and an error message will be added to system log.

Output Details The details for this type of output include the relay on/off state, relay status (HOA mode, Interlock from sensor cal-

ibration, probe wash, or other condition), the current cycle and the total on-times, alarms related to this output, the

output dened as the Lead of the group, the output that is the Last Lag output of the group, the number of outputs

currently energized within the group, the elapsed time since the last change in the number of outputs energized, the elapsed time since the last wear leveling evaluation, the type of output, and the current control mode setting.

Settings

Touch the Settings icon to view or change the settings related to the relay. The Lag control mode output dened as the Last Lag within the Lead Lag group offers settings to dene the pa-

rameters controlling operation of the entire group.

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All Lag mode outputs that are not the Last Lag output in the Lead Lag group (those that are selected as a Lead output from another Lag mode output) offer a more limited list of settings.

Lag Settings (Menus with * are shown only in the Last Lag output settings)

HOA Setting

Lead

Wear Leveling*

Wear Cycle Time*

Activation Mode*

Set point

Set point 2

Deadband

Delay Time*

Activate With Channels

Reset Time Total

Output Time Limit

Reset Output Timeout

Name

Select Hand, Off or Auto mode by touching the desired mode

Select the output that will be the lead output for this relay

Select the wear leveling scheme to use. Refer to the detailed description above.

This setting only appears if Time Balanced or Time Unbalanced Wear Leveling has been selected above. Enter the amount of elapsed time before time on totals for each output are reevaluated for wear leveling.

This entry is only appears if the control mode of the Lead output is On/Off, Dual Setpoint, Spike or Manual. Select one of the options that will determine if and when an additional output will be activated if the primary output is unable to reach the setpoint.

This setting only appears if the control mode of the Lead output is On/Off or Dual Setpoint and the Activation Mode above is Setpoint Based.

Enter the process value for the input assigned to the Lead output that will trigger an additional output to activate.

This setting only appears if the control mode of the Lead output is Dual Setpoint and the Activation Mode above is Setpoint Based.

Enter the process value for the input assigned to the Lead output that will trigger an additional output to activate.

This setting only appears if the control mode of the Lead output is On/Off or Dual Setpointand the Activation Mode above is Setpoint Based.

Enter the sensor process value away from the set point(s) at which the relay will deactivate.

This setting only appears if the control mode of the Lead output is On/Off, Dual Setpoint, Spike or Manual.

Enter the amount of time, if any, to delay the activation of the output.

This setting only appears if the control mode of the Lead output is Manual and the activation mode is Switch Based.

Select one or more digital input and/or relay output channels that, if activated, will also activate the Lag output

Enter this menu to clear the accumulated time that the output has been activated . This value is used for Time Balanced or Time Unbalanced wear leveling.

Enter the maximum amount of time that the relay can be continuously activated. Once the time limit is reached, the relay will deactivate until the Reset Output Timeout menu is entered.

Enter this menu to clear an Output Timeout alarm and allow the relay to control the process again.

The name used to identify the relay may be changed.

Mode

Select the desired control mode for the output.

Several standard settings that are available for most control modes are not available for Lag outputs. These features

affect the entire Lead Lag group and can be specied only within the Lead output’s settings. The settings for these elds are propagated down through the entire Lead Lag group when changed for the Lead output. Although the settings for these elds are identical for all outputs in the Lead Lag group, the handling by each Lag output may be

independent or group-managed.

Below are the settings that are in the Lead Relay settings that will affect the Lead Lag group:

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Interlock Channels

Min Relay Cycle

Hand Time Limit

Hand Output

Off Mode Output

Error Output

The Activate With Channels setting, normally available for all outputs, is not propagated through the Lead Lag

group. This eld can be entered independently for each Lag Output when the control mode of the Lead output is

Manual and the activation mode is Switch Based.

Select the relays and digital inputs that will interlock this relay and all others in the group.

Enter the number of seconds that will be minimum amount of time that each relay in the group will be in the active or inactive state.

Normally this will be set to 0, but if using a motorized ball valve that takes time to open and close, set this high enough that the valve has time to complete its movement.

Enter the amount of time that each relay in the group will activate for when it is in Hand mode.

This menu only appears for pulse relay or analog output Lead outputs. Enter the output % desired for each output in the group when the output is in Hand

mode.

This menu only appears for analog output Lead outputs.Enter the output mA value desired for each output in the group when the output is in Off mode, or being Interlocked, or during a calibration of the sensor being used as an input. The acceptable range is 0 to 21 mA.

This menu only appears for analog output Lead outputs.Enter the output mA desired for each output in the group when the sensor is not giving the controller a valid signal. The acceptable range is 0 to 21 mA.

Most other settings for the various types of Lead control modes are managed independently from other outputs within a Lead Lag group. In most cases, no Activation Mode settings are available, so the Lead output determines the status for the entire group based on its settings and the current controller parameters. However, when an Activation Mode is enabled, the handling of some settings may require some additional explanation. For example,

• Duty Cycle - If a Lead output with a control mode of On/Off or Dual Setpoint has a Duty Cycle setting of less that 100%, this cycle will be managed for the Lead output only. The Duty Cycle will drive other Lag outputs for Backup or Wear Leveling purposes. However, if additional Lag Output(s) are energized due to Setpoint-Based or Time-Based Activation Mode settings, the additional outputs will operate independently of the Duty Cycle setting. The Lead output will continue to cycle On and Off, however, the additional outputs will

remain activated with 100% duty cycle until the setpoint deadband is satised.

• On Delay / Off Delay - If the Lead output with a control mode of On/Off, Dual Setpoint, or Manual has either

an On or Off Delay Time setting specied, the delay will be managed for the Lead output only. If one or more

Lag outputs provide Backup or Wear Leveling support, the Delay Times would also effect these outputs. However, if additional Lag Output(s) are energized due to Activation Mode settings, the additional outputs will operate independently of the On or Off Delay Time setting(s) and will energize and de-energize without delay when needed.

5.3.20 Relay, Target PPM Control Mode

ONLY AVAILABLE IF HVAC MODE IS ENABLED

Overview

In Target PPM control mode, the controller monitors the total volume of ow through up to two analog or digital ow meters, and after a programmable volume has been accumulated, the relay activates for a calculated time to

achieve a target PPM level.

The user enters the target PPM, the volume of water to trigger the chemical feed, and the data necessary to calculate the pump on-time required to maintain the target PPM in that volume of water.

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Pump On-Time (sec.) = Accumulated Volume (gal or l) x Target PPM x 0.0036

)

Cycles x Pump Capacity (gal or l/hr.) x Pump Setting (%) x Specic Gravity (g/cm

Pump On-Time (sec.) = Accumulated Volume (m) x Target PPM x 3.6

Cycles x Pump Capacity (I/hr) x Pump Setting (%) x Specic Gravity (g/cm)

Control Operation

As ow accumulates, the controller updates a eld called Accumulator Total. When this value is greater than or

equal to the value set for the Accumulator Volume, the relay activates for the calculated number of seconds, and the accumulated total is reduced by the accumulator volume amount.

If the trigger volume is achieved again before the activation time has expired, the newly calculated on-time per unit volume is added to the remaining on-time. If the relay state is continuously on for longer than the Output Time Limit, then relay will deactivate.

Output Details

The details for this type of output include the relay on/off state, HOA mode or Interlock status, total accumulated on-time, alarms related to this output, current cycle on time, remaining on-time, accumulator total, disturbance input value (if used) and adjusted target setpoint (if disturbance input is used), cycles of concentration, relay type and the current control mode setting.

Settings

Touch the Settings icon to view or change the settings related to the relay

Target

Pump Capacity

Pump Setting

Specic Gravity

Accumulator Volume

Flow Input

Flow Input 2

Cycles Input

Low Cycles Limit

Disturbance Input

Enter the desired PPM set point for the product.

Enter the maximum ow rate for the metering pump.

Enter the stroke length setting for the metering pump, in percent.

Enter the specic gravity of the product to be added.

Enter the volume of water passing through the water meter to trigger the chemical feed.

Select the ow meter to be used as an input for this control relay.

Select the second ow meter, if any, to be used as an input for this control relay.

Select the virtual input that is programmed as a Ratio calculation of the system conductivity/makeup conductivity, or select None.

Enter the lower limit for cycles of concentration, if used. The calculated on-time is limited to a maximum value if the cycles of concentration gets too low.

Select the virtual input or control output that will multiplied by the control setpoint (Target ppm setpoint). A typical application for this is to use a corrosion sensor as the disturbance input to adjust the PPM setpoint.

5.3.21 Relay, PPM by Volume Control Mode

ONLY AVAILABLE IF HVAC MODE IS ENABLED. NOT AVAILABLE FOR VIRTUAL OUTPUTS.

Overview

In PPM by Volume control mode, the controller monitors the total volume of ow through up to two analog or digital ow meters, and after a programmable volume has been accumulated, the relay activates until the calculated number of pulses from a ow monitoring device to achieve a target PPM level are received.

The user enters the target PPM, the volume of water to trigger the chemical feed, and the data necessary to calculate the volume of chemical required to maintain the target PPM in that volume of water. The Feed Monitoring device programming (volume/pulse, assignment of the device to a relay output) is entered in the Feed Monitor digital input menus.

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Volume to Feed (gal or l) = Accumulated Volume (gal or l) x Target PPM

Cycles x Specic Gravity x 106

Volume to Feed (l) = Accumulated Volume (m3) x Target PPM

(Cycles x Specic Gravity x 106) x 1000

Control Operation

As ow accumulates, the controller updates a eld called Accumulator Total. When this value is greater than or

equal to the value set for the Accumulator Volume, the relay activates for the calculated number of pulses from the feed monitor, and the accumulated total is reduced by the accumulator volume amount.

If the trigger volume is achieved again before the activation time has expired, the newly calculated feed monitor pulses per unit volume are added to the remaining number. If the relay state is continuously on for longer than the Output Time Limit, then relay will deactivate.

Output Details

The details for this type of output include the relay on/off state, HOA mode or Interlock status, total accumulated on-time, alarms related to this output, current cycle on time, remaining feed volume, accumulator total, cycles of concentration, relay type and the current control mode setting.

Settings

Touch the Settings icon to view or change the settings related to the relay

Target

Specic Gravity

Accumulator Volume

Flow Input

Flow Input 2

Cycles Input

Low Cycles Limit

Enter the desired PPM set point for the product.

Enter the specic gravity of the product to be added.

Enter the volume of water passing through the water meter to trigger the chemical feed.

Select the ow meter to be used as an input for this control relay.

Select the second ow meter, if any, to be used as an input for this control relay.

Select the virtual input that is programmed as a Ratio calculation of the system conductivity/makeup conductivity, or select None.

Enter the lower limit for cycles of concentration, if used. The calculated on-time is limited to a maximum value if the cycles of concentration gets too low.

5.3.22 Relay, Flow Proportional Mode

ONLY AVAILABLE IF CONTROLLER INCLUDES PULSE OUTPUT HARDWARE

Overview

In Flow Proportional control mode, the controller monitors the rate of ow through an analog or digital ow meter,

and continuously adjusts the pulse proportional output proportional band to achieve a target PPM level.

% output = Target PPM x Water Flow Rate (liter/min or gal/min)

Cycles x Pump Capacity (liter or gal/hr) x Pump Setting (%) x Specic Gravity x 166.67

% output = Target PPM x Water Flow Rate (m3⁄min)

Cycles x Pump Capacity (liter/hr) x Pump Setting (%) x Specic Gravity x 0.16667

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Control Operation

If the output is continuously on for longer than the Output Time Limit, then output will deactivate.

Output Details

The details for this type of output include the output %, HOA mode or Interlock status, alarms related to this output, current cycle on time, total accumulated on-time, cycles of concentration, pulse rate, and the current control mode setting.

Settings

Touch the Settings icon to view or change the settings related to the relay.

Target

Pump Capacity

Pump Setting

Specic Gravity

Hand Output

Flow Input

Cycles Input

Enter the desired PPM set point for the product.

Enter the maximum ow rate for the metering pump.

Enter the stroke length setting for the metering pump, in percent.

Enter the specic gravity of the product to be added.

Enter the output % desired when the output is in Hand mode.

Select the ow meter to be used as an input for this control relay.

Select the virtual input that is programmed as a Ratio calculation of the system conductivity/makeup conductivity, or select None.

Low Cycles Limit

Enter the lower limit for cycles of concentration, if used. The calculated on-time is limited to a maximum value if the cycles of concentration gets too low.

5.3.23 Relay, Counter Timer Control Mode

ONLY AVAILABLE IF HVAC MODES ARE DISABLED IN CONFIG MENU – GLOBAL SETTINGS

The Counter Timer algorithm activates the relay for a programmable amount of time, triggered by the accumulation of a programmable number of contact closures from a Digital Counter type input.

Output Details

The details for this type of output include the relay on/off state, HOA mode or Interlock status, time on, remaining on-time, accumulator total, total relay activation time, alarms related to this output, relay type and the current control mode setting.

Settings

Touch the Settings icon to view or change the settings related to the relay.

Feed Duration

Enter the amount of time for the relay to activate for once the accumulated setpoint number of contact closures has been reached.

Accumulated Setpoint

Input

Enter the number of contact closures required to trigger the relay activation.

Select the input to be used to control this output.

5.3.24 Relay Output, On/Off Disturbance Control Mode

On/Off control mode is enhanced to add a disturbance input that is multiplied by the user-entered setpoint. An ex-

ample of this might be the control of a corrosion inhibitor containing PTSA based upon a uorometer sensor input, with the setpoint modied based upon a corrosion sensor Disturbance Input, so a higher corrosion reading results

in more corrosion inhibitor being fed. Another example might be cooling tower conductivity control on cycles of

concentration, with the cycles setpoint modied by a Disturbance Input of Makeup Conductivity.

Output Details

The details for this type of output include the relay on/off state, HOA mode or Interlock status, accumulated ontime, alarms related to this output, current cycle on time, input value, current setpoint, disturbance input value, relay type, and the current control mode setting.

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Settings

Touch the Settings icon to view or change the settings related to the relay.

Set point

Deadband

Duty Cycle Period

Duty Cycle

On Delay Time

Off Delay Time

Input

Direction

Disturbance Input

Enter the sensor process value at which the relay will activate.

Enter the sensor process value away from the set point at which the relay will deactivate.

Enter the length of the duty cycle in minutes:seconds in this menu. Set the time to 00:00 if use of a duty cycle is not required.

Enter the percentage of the cycle period that the relay will be active. Set the percentage to 100 if use of a duty cycle is not required.

Enter the delay time for relay activation in hours:minutes:seconds. Set the time to 00:00:00 to immediately activate the relay

Enter the delay time for relay deactivation in hours:minutes:seconds. Set the time to 00:00:00 to immediately deactivate the relay

Select the sensor to be used by this relay.

Select the control direction.

Select the virtual input or analog output to be multiplied by the control setpoint.

5.3.25 Relay Output, Volumetric Blending Control Mode

Volumetric Blending is used to mix two liquid streams together at a xed ratio. The relay controls a diverter valve

that alternates between two sources, metering in a programmable accumulator volume when the relay is deactivated, and then switches to a programmable blend volume when the relay is activated.

This control mode includes an optional disturbance input that is multiplied by the user-entered blend volume. A common example is to mix two cooling tower makeup water sources, and then to use the makeup conductivity as a disturbance input to adjust the ratio.

Output Details

The details for this type of output include the relay on/off state, HOA mode or Interlock status, accumulated ontime, alarms related to this output, relay type, and the current control mode setting.

Settings

Touch the Settings icon to view or change the settings related to the relay.

Accumulator Volume

Blend Volume

Flow Input

Disturbance Input

Enter the volume through the ow meter with the relay deactivated.

Enter the volume through the ow meter with the relay activated.

Select the owmeter input to be used to control this output.

Select the virtual input or analog output to be used to multiplied by the control setpoint (Blend Volume).

5.3.26 Relay Output, Flow Meter Ratio Control Mode

Flow Meter Ratio Control Mode is typically used in cooling water applications to control the conductivity of the water using volumetric cycles of concentration. The controller measures the volume of makeup water going

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through one or two water meters, and after a programmable amount, activates the relay to control a programmable volume out through one or two bleed water meters.

Output Details

The details for this type of output include the relay on/off state, HOA mode or Interlock status, Accumulated makeup water total, bleed cycle volume, remaining volume, relay on-time for this cycle, accumulated on-time, alarms related to this output, relay type, and the current control mode setting.

Settings

Touch the Settings icon to view or change the settings related to the relay.

Accumulator Volume

Bleed Volume

Makeup Meter

Makeup Meter 2

Bleed Meter

Bleed Meter 2

Enter the volume through the makeup water meters that will activate the relay.

Enter the volume through the bleed water meters that will deactivate the relay.

Select the makeup water meter from the pulldown list.

Select the makeup water meter from the pulldown list, if applicable, or leave at None.

Select the bleed water meter from the pulldown list.

Select the bleed water meter from the pulldown list, if applicable, or leave at None.

5.3.27 Relay or Analog Output, Disturbance Variable Control Mode

Only available for 4-20 mA and pulse relay output channels.

These control modes generate an output by combining contributions from a Primary control output, a Disturbance Input, and a Trigger Input in a variety of ways. When the disturbance trigger discrete input is active, the disturbance input is multiplied by the primary output to determine the control percent output. An alternate calculation trigger mode selection (Use Disturbance) is available to simply switch to the disturbance output when the trigger is active (rather than combine the two values).

As a future enhancement, the Primary Output and any outputs that are used as alternate control outputs will be Virtual Outputs. For now, these will require a physical output that are not connected to any controlled devices.

Some Example Applications

In-Line pH Control Adjusted for Flow

Direct feedback pH control in a pipe using a Primary Output of PID or Proportional control mode, with the Dis-

turbance Input using ow rate to provide a multiplier to adjust the output. This is primary feedback control with a

feedforward trim. No Trigger is required.

Chemical feed in proportion to Flow Adjusted for pH

If the incoming ow is variable but the pH of the water is relatively constant, feed the chemical using Flow Proportional control mode, with the Disturbance Input using the pH reading to provide a multiplier to adjust the output. This is primary feedforward control with a feedback trim. No Trigger is required.

Alternate Control During Upset Condition

Some disturbance applications require switching from one control mode to a different control mode (or a similar mode with different control settings) during an upset condition. The Primary Output could be set to Proportional control of pH, with the Disturbance Input selected as a Flow Proportional control algorithm. A Trigger Input could

be selected as a relay output that activates if the ow rate is either too high or too low. These conditions would trigger a switch from pH control to ow based control.

Output Details

The details for this type of output include the % output, HOA mode or Interlock status, alarms related to this output, Primary Output %, Disturbance Input value, current cycle on-time, accumulated on-time, raw output (in mA or pulses/min.), relay type, and the current control mode setting.

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Settings

Touch the Settings icon to view or change the settings related to the relay.

Minimum Output

Maximum Output

Hand Output

Off Mode Output

Maximum Rate

Error Output

Primary Output

Disturbance Input

Trigger Input

Activated

Trigger Mode

Enter the lowest output %. If the output should be off at the set point, this will be 0%.

Enter the highest output %.

Enter the output % desired when the output is in Hand mode.

Only for analog outputs. Enter the output mA value desired when the output is in Off mode, or being Interlocked, or during a calibration of the sensor being used as an input. The acceptable range is 0 to 21 mA.

Only for pulse outputs. Enter the maximum pulse rate that the metering pump is designed to accept (10 - 360 pulse/minute range).

Only for analog outputs. Enter the output mA desired when the sensor is not giving the controller a valid signal. The acceptable range is 0 to 21 mA.

Select the control output that will be used along with the disturbance input to calculate the control signal for the disturbance output.

Select the virtual input or analog output that will be used along with the Primary Output to calculate the control signal for the disturbance output.

Select a state-type digital input or relay output that will be used to initiate the disturbance control, or select None if the disturbance control will be active all the time.

Only appears if the Trigger Input is other than None. If a digital input is the Trigger Input, select between When Open or When Closed. If a relay output is the Trigger Input, select between When On or When Off.

Only appears if the Trigger Input is other than None. Select the action to take when the disturbance control algorithm has been activated. Multiply is used to calculate the control signal by multiplying the Disturbance Input value by the primary control output value. Use Disturbance is used when the Disturbance Input selected is a control output, and the action desired is to use this different control algorithm when in the disturbance state.

5.3.28 Analog Output, Proportional Control Mode

Output Details

The details for this type of output include the output %, HOA mode or Interlock status, accumulated on-time, alarms related to this output, current cycle on time, relay type and the current control mode setting.

Settings

Touch the Settings icon to view or change the settings related to the relay.

Set point

Proportional Band

Minimum Output

Maximum Output

Hand Output

Off Mode Output

Error Output

Input

Direction

Enter the sensor process value at which the output % will be the programmed minimum %.

Enter the sensor process value away from the set point at which the output % will be the programmed maximum %.

Enter the lowest output %. If the output should be off at the set point, this will be 0%.

Enter the highest output %.

Enter the output % desired when the output is in Hand mode.

Enter the output mA value desired when the output is in Off mode, or being Interlocked, or during a calibration of the sensor being used as an input. The acceptable range is 0 to 21 mA.

Enter the output mA desired when the sensor is not giving the controller a valid signal. The acceptable range is 0 to 21 mA.

Select the sensor input to use for proportional control.

Select the control direction.

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5.3.29 Analog Output, Flow Proportional Mode

Overview

In Flow Proportional control mode, the controller monitors the rate of ow through an analog or digital ow meter,

and continuously adjusts the analog (4-20 mA) output proportional band to achieve a target PPM level.

% output = Target PPM x Water Flow Rate (liter/min or gal/min)

Cycles x Pump Capacity (liter or gal/hr) x Pump Setting (%) x Specic Gravity x 166.67

% output = Target PPM x Water Flow Rate (m3⁄min)

Cycles x Pump Capacity (liter/hr) x Pump Setting (%) x Specic Gravity x 0.16667

Control Operation

If the output is continuously on for longer than the Output Time Limit, then output will deactivate.

Output Details

Settings

Touch the Settings icon to view or change the settings related to the relay.

Target

Pump Capacity

Pump Setting

Specic Gravity

Hand Output

Off Mode Output

Error Output

Flow Input

Cycles Input

Low Cycles Limit

Enter the desired PPM set point for the product.

Enter the maximum ow rate for the metering pump.

Enter the stroke length setting for the metering pump, in percent.

Enter the specic gravity of the product to be added.

Enter the output % desired when the output is in Hand mode.

Enter the output mA value desired when the output is in Off mode, or being Interlocked, or during a calibration of the sensor being used as an input. The acceptable range is 0 to 21 mA.

Enter the output mA desired when the sensor is not giving the controller a valid signal. The acceptable range is 0 to 21 mA.

Select the ow meter to be used as an input for this control relay.

Select the virtual input that is programmed as a Ratio calculation of the system conductivity/makeup conductivity, or select None.

Enter the lower limit for cycles of concentration, if used. The calculated on-time is limited to a maximum value if the cycles of concentration gets too low.

5.3.30 Analog Output, PID Control Mode

ONLY AVAILABLE IF CONTROLLER INCLUDES ANALOG OUTPUT HARDWARE & HVAC MODE IS DISABLED

The PID algorithm controls an analog (4-20 mA) output using standard Proportional-Integral-Derivative control logic. The algorithm provides feedback control based on an error value continuously calculated as the difference between a measured process variable and a desired set point. Tuning settings specify the response for proportional (the size of the error), integral (the time that the error has been present), and derivative (the rate of change for the error) parameters. With proper tuning, the PID control algorithm can hold the process value close the set point while minimizing overshoot and undershoot.

Page 94

Normalized Error

de(t)

inputs.

PID Equation Formats

The controller supports two different forms of the PID equation as specied by the Gain Form setting. The two

forms require different units for entry of the PID tuning parameters.

Standard

The standard form is more commonly used in industry because its time-based settings for the integral and deriva-

tive coefcients are more meaningful. This form is selected by default.

Parameter Description Units

Gain unitless

Integral Time seconds or seconds/repeat

Derivative Gain seconds

de(t)

Output (%) = Kp e(t) + f e(t)dt + Td

Parameter Description Units

e(t) Current Error % of full scale

dt Delta Time Between Readings seconds

de(t) Difference Between Current Error & Previous Error % of full scale

Parallel

The parallel form allows the user to enter all parameters as Gains. In all cases, larger gain values result in faster output response. This form is used in the WebMaster controller and is used internally by the Control Module.

Parameter Description Units

Proportional Gain unitless

Integral Gain 1/ seconds

Derivative Gain seconds

Output (%) = Kp e(t) + Ki f e(t)dt + Kd

Integral Value Management

Override Control

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controller is switched from Off back to Auto. Similarly, accumulation of the Control Integral will be suspended if the output is interlocked and resume after the lock-out is removed.

Bumpless Transfer

use the Derivative tuning setting to minimize errors from momentary uctuations in the input signal. This feature

Wind-up Suppression

For example, if the process value remains far below the set point despite a control output being pinned at 100%,

the Current Integral will continue to accumulate errors (wind-up). When the process value nally rises to above the

set point, negative errors will begin to decrease the Current Integral value. However, the value may remain large

enough to keep the output at 100% long after the set point is satised. The controller will overshoot the set point

and the process value will continue to rise. To optimize system recovery after wind-up situations, the controller suppresses updates to the Current Integral

Output Details

The details for this type of output include the analog output value in %, HOA mode or Interlock status, input value, current integral, current and accumulated on-times, alarms related to this output, and the current control mode setting.

Set Point

Numeric entry of a process value used as a target for PID control. The default value,

units and display format (number of decimal places) used during data entry are dened

based on the Input channel setting selected.

Gain

When the Gain Form setting is Standard, this unitless value is multiplied by the total of the proportional, integral, and derivative terms to determine the calculated output percent.

Proportional Gain

Integral Time

Integral Gain

Derivative Time

Derivative Gain

Reset PID Integral

Page 96

Minimum Output

Maximum Output

Off Mode Output

Enter the lowest possible output value (normally 0%).

Enter the highest possible output value as a percentage.

Enter the output mA value desired when the output is in Off mode, or being Interlocked, or if the Output Time Limit has expired, or during a calibration of the sensor being used as an input. Also if there is a Probe Wash programmed for the sensor, and the Sensor Mode option is set to Disable the output during the Wash cycle (if the Sensor Mode option is set to Hold the output holds its last setting and the Integral is not updated during the Wash). The acceptable range is 0 to 21 mA.

Error Output

Enter the output mA desired when the sensor is not giving the controller a valid signal. The acceptable range is 0 to 21 mA.

Input

Direction

Select the sensor to be used by this output.

Set the control direction. This setting is used to determine the sign of the calculated error (current process value versus set point) and allows exible control with only positive values for all PID tuning parameters.

Input Minimum

The low end of the sensor input range, used to normalize errors into percent of full scale units. These values are set to the nominal range of the selected input sensor by default.

Input Maximum

The high end of the sensor input range, used to normalize errors into percent of full scale units. These values are set to the nominal range of the selected input sensor by default.

Gain Form

Select the PID Equation Format used to enter tuning parameters.

5.3.31 Analog Output, Manual Mode

Output Details

The details for this type of output include the analog output %, HOA mode or Interlock status, accumulated ontime, alarms related to this output, current cycle on time, and the current control mode setting.

Settings

A Manual analog output will activate if the HOA mode is Hand, or if it is Activated With another channel. There are no additional programmable parameters

5.3.32 Analog Output, Retransmit Mode

Output Details

Settings

Touch the Settings icon to view or change the settings related to the relay.

4 mA Value

20 mA Value

Hand Output

Error Output

Input

Enter the process value to correspond to a 4 mA output signal.

Enter the process value to correspond to a 20 mA output signal.

Enter the output % desired when the output is in Hand mode.

Enter the output % desired when the input signal is invalid (Error mode).

Select the sensor input to retransmit.

5.4 Conguration Menu

The conguration Settings Menu is used for settings and activities that are not tied to Inputs or Outputs.

5.4.1 Global Settings

Date

Enter the current year, month and day.

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Time

Name

Location

Global Units

Temperature Units

Alarm Delay

HVAC Modes

Language

Enter the current hour (military time), minute, and second.

Enter the name to help identify the controller when it connects to VTouch.

Enter the location to help identify the controller when it connects to VTouch.

Select the units to be used for cable length and wire gauge settings, metric or Imperial.

Select between Fahrenheit and Celsius.

Enter how much time to wait after powering up the controller before alarm conditions are considered valid.

Enable HVAC Modes for cooling tower and boiler applications where the relay control modes for Biocide timer, Bleed and Feed, Bleed then Feed, and Intermittent Sampling are required. Disable HVAC Modes if these control modes are not necessary and a more generic timer control mode will replace the Biocide timer.

Select the language the software will use.

5.4.2 Security Settings

Controller Log Out

Security

Local Password

When Security is Enabled, and after the password has been entered, the controller requires

immediate use of a password to calibrate or change settings. Once nished making changes,

log out to prevent unauthorized changes by someone else. If not manually logged out, the controller will automatically log out after 10 minutes of inactivity.

Select Enable to require a password in order to calibrate or change settings, or Disable to allow calibration and set point changes without a password. In order to enable security, the

default password must be entered rst, then touch Enabled, then touch the Conrm icon.

Used to change the touchscreen password needed for full conguration capability if security

has been enabled. The default local password is 5555. This can and should be changed using this menu if Security is enabled.

5.4.3 Ethernet Settings

Will not appear if a WiFi-Only type WiFi card is installed.

DHCP Setting

Controller IP Address

Network Netmask

Network Gateway

DNS Server

TCP Timeout

VTouch Status

LiveConnect Status

Update Period

Reply Timeout

Select Enabled to get an IP address from the LAN or Disabled to use a xed IP address.

Enter the default IP address to use if a network is not available or if DHCP is disabled.

Enter the default netmask to use if a network is not available or if DHCP is disabled.

Enter the default gateway address to use if a network is not available or if DHCP is disabled.

Enter the default DNS server IP address to use if DHCP is disabled.

Do not change from the default of 1 second unless directed to by techical service. The TCP Timeout should only be increased if the VTouch live connection is being Reset due to slow cellular connection speed.

Select Enabled to activate a connection to VTouch, or Disabled to stop sending data and alarms to VTouch.

Select Enabled to allow the ability to access the controller programming and log les

remotely using VTouch, or Disabled to prevent remote connection to the controller using VTouch. The controller can still send data and alarms to VTouch, but the LiveConnect icon will not appear on the VTouch webpages.

Enter the time between data updates being sent to VTouch.

Enter the maximum time allowed for VTouch to respond.

Page 98

5.4.4 Ethernet Details

The Ethernet Details are for information only and display the Ethernet settings currently in use, and the recent history of the VTouch connection. Will not appear if a WiFi-Only type WiFi card is installed.

Alarms

DHCP Status

Controller IP Address

Network Netmask

Network Gateway

DNS Server

MAC Address

Last VTouch Cong

Last VTouch Data

Displays any active Ethernet-related alarms

Displays if the connection to the LAN using DHCP was successful or not.

Displays the IP address that the controller is currently using.

Displays the netmask address that the controller is currently using.

Displays the gateway address that the controller is currently using.

Displays the DNS server address that the controller is currently using.

Displays the MAC address of the Ethernet card.

Displays the date and time of the last attempt to send conguration data to the VTouch server.

Displays the date and time of the last attempt to send a data to the VTouch server.

5.4.5 WiFi Settings

Will only appear if a WiFi option board is installed.

There are two types of WiFi board that are available.

The WiFi-only type of board will disable the controller’s wired Ethernet connection when it is attached to the controller. The controller will either be able to connect to a Local Area Network (LAN) via Infrastructure Mode, or it will be able to connect to a PC, tablet, or cell phone via Ad-Hoc Mode. It will not be able to have a wired Ethernet

connection to a LAN or cellular gateway device and also connect to a tablet via Ad-Hoc Mode. This conguration

is inherently more secure.

The dual connection type WiFi cards do not disable the controller’s wired Ethernet connection when it is attached to the controller. This allows simultaneous connection to a cellular gateway (Ethernet) and a LAN (WiFi, using Infrastructure mode), or to a LAN (Ethernet) and a nearby PC, tablet or cell phone (WiFi, using Ad-Hoc mode).

This conguration is inherently less secure, since it cannot be guaranteed to be impossible to bridge between the

two connections.

WiFi Mode

SSID

Key

Gateway Connection

DHCP Setting

Controller IP Address

Network Netmask

Select between Infrastructure Mode, Ad-Hoc Mode, or Disabled.

Infrastructure Mode. Enter the SSID of the LAN’s wireless network connection.

Infrastructure Mode. Enter the key needed to connect to the LAN’s wireless network connection.

Infrastructure Mode. Only appears if a Dual WiFi/Ethernet type WiFi card is installed. Select which connection, Ethernet or WiFi, will provide the Gateway function. This means that all external Internet connections such as VTouch or emails will default to using this connection.

Note that If the selected connection is no longer available, the controller will switch to using the other connection. Regardless of the connection being used , the menus to enable or disable VTouch or Live Connect will be available only in the selected connection’s menu.

Infrastructure Mode. Enable to allow the controller to obtain its IP address and other network settings from the LAN or disable to enter this information manually.

Infrastructure Mode. Only appears if a Dual WiFi/Ethernet type WiFi card is installed, and the DHCP Setting is set to Disabled. Manually enter the IP address for the controller.

Infrastructure Mode. Only appears if a Dual WiFi/Ethernet type WiFi card is installed and the DHCP Setting is set to Disabled. Manually enter the network netmask address for the controller.

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Network Gateway

DNS Server

Ad-Hoc SSID

Ad-Hoc Security

Ad-Hoc Key

SSID Broadcast

TCP Timeout

Temporary Ad-Hoc

Begin Temporary AdHoc Mode

Ad-Hoc Time Limit

Infrastructure Mode. Only appears if a Dual WiFi/Ethernet type WiFi card is installed and the Gateway Connection is selected as WiFi, and the DHCP Setting is set to Disabled. Manually enter the gateway address to be used by the controller when connected to the LAN.

Infrastructure Mode. Only appears if a Dual WiFi/Ethernet type WiFi card is installed and the Gateway Connection is selected as WiFi, and the DHCP Setting is set to Disabled. Manually enter the address for the DNS server that the controller will use.

Ad-Hoc Mode. Enter the SSID that the controller may broadcast as an available wireless network connection. The default setting is “ControllerModel_SerialNumber”

Ad-Hoc Mode. Select the security protocol used by the controller’s wireless network connection.

Ad-Hoc Mode. Enter the key needed to connect to the controller’s wireless network connection. Between 8 and 64 characters are required.

Ad-Hoc Mode. Select whether the controller’s wireless network card will broadcast its SSID or not.

Do not change from the default of 1 second unless directed to by technical service. The TCP Timeout should only be increased if the VTouch live connection is being Reset due to slow cellular connection speed.

Infrastructure Mode. Enable if it is desirable to allow the controller to disconnect from Infrastructure Mode and switch to a time-limited Ad-Hoc mode, to give a user temporary access to the controller without allowing that user access to the network.

Infrastructure Mode. Only appears if Temporary Ad-Hoc is Enabled. Press this to start the temporary Ad-Hoc mode connection and timer.

Infrastructure Mode. Only appears if Temporary Ad-Hoc is Enabled. Enter the time limit for the temporary ad-hoc mode connection.

5.4.6 WiFi Details

Will only appear if a WiFi option board is installed.

The WiFi Details are for information only and display the network settings currently in use.

WiFi Status

Signal Strength

RSSI

WiFi Channel

Alarms

DHCP Status

Controller IP Address

Network Netmask

Network Gateway

Security Protocol

DNS Server

BSSID/MAC Address

FCC ID

IC ID

Last VTouch Cong

Last VTouch Data

Live Connect Status

Displays if the WiFi is enabled or disabled.

Displays the signal strength in the range of -100 to -30 dBm

Displays the Relative Signal Strength In percent (0% = -100 dBm and 100% is greater than -49 dBm).

Displays the WiFi channel that the controller is currently using.

Displays any active WiFi-related alarms.

Displays if the connection to the device using DHCP was successful or not.

Displays the IP address that the controller is currently using.

Displays the netmask address that the controller is currently using.

Displays the gateway address that the controller is currently using.

Displays the security protocol that the controller is currently using.

Displays the DNS server address that the controller is currently using

Displays the BSSID/MAC address of the WiFi board.

Displays the FCC ID code, if applicable (USA).

Displays the IC ID code, if applicable (Canada).

Displays the date and time of the last attempt to send conguration data to the VTouch

server.

Displays the date and time of the last attempt to send a data to the VTouch server.

Displays the status of the Live Connect tunnel.

Page 100

5.4.7 Remote Communications (Modbus and BACnet)

This menu will appear only if one of the optional Remote Communcations activation keys has been imported into

the controller, either by the factory at the time of ordering, or later using a eld activation le.

To add the Remote Communications feature in the eld, purchase the activation key le and save it to an USB drive, as the only le stored on the root directory of the stick. Insert the stick into the USB port of the controller. Go to the Conguration Menu, then File Utilities, then Import User Cong File. Press the Conrm icon to start the

activation process.

The display will report whether the import was successful or not. The activation key le is only valid for the serial

number of the controller for which it was purchased.

For a complete description of the Modbus feature and register map, refer to the separate Modbus instruction manual. For a complete description of the BACnet feature and list of object instances, refer to the separate BACnet instruction manual.

Comm Status

Data Format

Device ID

Network

Data Port

Verbose Logging

Select Modbus or BACnet to enable one of the protocols, or Disabled.

Modbus Only. Select to receive Modbus data in Standard (Float) format or Float Inverse format

BACnet Only. Enter the device ID for the controller. The default will be based on the controller serial number.

BACnet only, if the dual connection WiFi card is installed. Select the connection that will be used for BACnet communications; Ethernet or WiFi.

The standard port for Modbus data is port 502, and for BACnet is 47808. Enter the port used if it is non-standard.

If logging is Enabled, all Modbus or BACnet requests will be logged in the Event Log

(any errors, the function called, starting register, number of registers, value of the rst register, get object requests). This is useful when rst setting up the HMI, but it will quickly ll the Event Log if it is not Disabled during normal operation. The Verbose

Logging function will be automatically disabled after power to the controller is cycled.

5.4.8 Email Report Settings

NOTE: To set up the content of the Graph report, connect using a browser via Ethernet or WiFi and go to the Graph webpage. See section 6.

Report #1 (through 4)

Report Type

Email Recipients

Repetition

Reports Per Day

Enter this menu to activate and set up a report to email, via the menus below:

Select the type of report to email: None, Alarm, Datalog, Graph, or Summary (the Home webpage showing a Summary of current conditions).

Select up to 8 email addresses that reports may be sent to by touching the check box. The addresses are entered in the Email Addresses menu described above.

Only appears if Report Type is Datalog, Graph or Summary. Select how frequently to repeat sending the report: None, Hourly, Daily, Weekly or Monthly.

Only appears if Report Type is Datalog, Graph or Summary. Only appears if the repetition is set to Hourly. Select the number of reports per day: 2, 3, 4, 6, 8, 12 or 24. The report is sent on the Report Time and then evenly spaced throughout the day.

Day

Only appears if Report Type is Datalog, Graph or Summary. Only appears if the repetition is set to Weekly. Choose the day of the week on which the report will be sent.

Walchem W900 Operating Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1.0 INTRODUCTION

2.0 SPECIFICATIONS

2.1 Measurement Performance

2.2 Electrical: Input/Output

2.3 Mechanical

2.4 Variables and their Limits

3.0 UNPACKING & INSTALLATION

3.1 Unpacking the unit

3.2 Mounting the electronic enclosure

3.3 Sensor Installation

3.5 Electrical installation

4.0 FUNCTION OVERVIEW

4.1 Front Panel

4.2 Touchscreen

4.3 Icons

4.4 Startup

4.5 Shut Down

5.0 OPERATION using the touchscreen

5.2.1 Contacting Conductivity

5.2.2 Electrodeless Conductivity

5.2.3 Temperature

5.2.4 pH

5.2.5 ORP

5.2.6 Disinfection

5.2.7 Generic Sensor

5.2.8 Corrosion Input

5.2.9 Corrosion Imbalance Input

5.2.10 Transmitter Input and AI Monitor Input

5.2.11 Fluorometer Input

5.2.12 Analog Flowmeter Input

5.2.13 DI State

5.2.14 Flow Meter, Contactor Type

5.2.15 Flow Meter, Paddlewheel Type

5.2.16 Feed Monitor

5.2.17 DI Counter Input

5.2.18 Virtual Input – Calculation

5.2.19 Virtual Input – Redundant

5.2.20 Virtual Input – Raw Value

5.2.21 Virtual Input - Disturbance

5.3.1 Relay, Any Control Mode

5.3.2 Relay, On/Off Control Mode

5.3.3 Relay, Flow Timer Control Mode

5.3.4 Relay, Bleed and Feed Control Mode

5.3.5 Relay, Bleed then Feed Control Mode

5.3.6 Relay, Percent Timer Control Mode

5.3.7 Relay, Biocide Timer Control Mode

5.3.8 Relay, Alarm Output Mode

5.3.9 Relay, Time Proportional Control Mode

5.3.10 Relay, Intermittent Sampling Control Mode

5.3.11 Relay, Manual Mode

5.3.12 Relay, Pulse Proportional Control Mode

5.3.13 Relay, PID Control Mode

5.3.14 Relay, Dual Set Point Mode

5.3.15 Relay, Timer Control Mode

5.3.16 Relay, Probe Wash Control Mode

5.3.17 Relay, Spike Control Mode

5.3.18 Relay Output, Flow Proportional Mode

5.3.19 Relay or Analog Output, Lag Control Mode

5.3.20 Relay, Target PPM Control Mode

5.3.22 Relay, Flow Proportional Mode

5.3.23 Relay, Counter Timer Control Mode

5.3.24 Relay Output, On/Off Disturbance Control Mode

5.3.25 Relay Output, Volumetric Blending Control Mode

5.3.26 Relay Output, Flow Meter Ratio Control Mode

5.3.27 Relay or Analog Output, Disturbance Variable Control Mode

5.3.28 Analog Output, Proportional Control Mode

5.3.29 Analog Output, Flow Proportional Mode

5.3.30 Analog Output, PID Control Mode

5.3.31 Analog Output, Manual Mode

5.3.32 Analog Output, Retransmit Mode

5.4.1 Global Settings

5.4.2 Security Settings

5.4.4 Ethernet Details

5.4.5 WiFi Settings

5.4.6 WiFi Details

5.4.7 Remote Communications (Modbus and BACnet)