Precision Digital PD2-6080, PD2-6081 User guide

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Page 1

Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

PRECISION DIGITAL CORPORATION

233 South Street • Hopkinton MA 01748 USA Tel (800) 343-1001 • Fax (508) 655-8990

www.predig.com

• Large Display NEMA 4X, IP65 Wall Mounted Modbus Scanners

• Modbus RS-485 RTU Scanner as Master, Slave, or Snooper

• Dual Analog Inputs (0-20 mA, 4-20 mA, 0-5 V, 1-5 V, and ±10 V)

• On-Board USB & RS-485 Serial Communication Standard

• Decimal or Feet & Inches (with Eighths & Sixteenths) Display Options

• Poll and Display up to 16 Process Variables

• Add, Diff, Avg, Multi, Div, Min, Max, Weighted Avg, Ratio, Concentration, & More

• Large Dual-Line 6-Digit Display, 1.8" (46 mm) Digits Readable up to 100 Feet (30 Meters) Away

• 4 Relays with Interlocking Capability + Isolated 4-20 mA Output Option

• Free PC-Based, On-Board, ScanView USB Programming Software

• SunBright Display Standard Feature; Great for Outdoor Applications

• Operating Temperature Range of -40 to 65°C (-40 to 149°F)

• Conformal Coated PCBs for Dust and Humidity Protection

• UL & C-UL Listed. E160849; 508 Industrial Control Equipment

• Input Power Options: 85-265 VAC / 90-265 VDC or 12-24 VDC / 12-24 VAC

• Multi-Pump Alternation Control

• 32-Point, Square Root, or Exponential Linearization

• External 4-Relay & Dual 4-20 mA Output Expansion Modules

• 5 Digital Inputs & 4 Digital Outputs Standard

• Password Protection

• Light / Horn & Button Accessory

• Control Station Accessory for Remote Operation

• 3-Year Warranty

ScanView

USB Install

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Disclaimer

The information contained in this document is subject to change without notice. Precision Digital makes no representations or warranties with respect to the contents hereof and specifically disclaims any implied warranties of merchantability or fitness for a particular purpose. See Warranty Information and Terms & Conditions on www.predig.com for complete details.

• Read complete instructions prior to installation and operation of the scanner.

• Risk of electric shock or personal injury.

• This product is not recommended for life support

applications or applications where malfunctioning could result in personal injury or property loss. Anyone using this product for such applications does so at his/her own risk. Precision Digital Corporation shall not be held liable for damages resulting from such improper use.

WARNING

Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Limited Warranty

Precision Digital Corporation warrants this product against defects in material or workmanship for the specified period under

“Specifications” from the date of shipment from the factory. Precision Digital’s liability under this

limited warranty shall not exceed the purchase value, repair, or replacement of the defective unit. See Warranty Information and Terms & Conditions on www.predig.com for complete details.

Registered Trademarks

All trademarks mentioned in this document are the property of their respective owners.

FREE ScanView Programming Software

The scanner can be powered from the USB connection. When using the USB connection, DO NOT apply AC or DC power to the scanner.

The easiest and quickest way to program your Helios Modbus scanner is to use the FREE ScanView programming software. This software is loaded into the scanner and connects and installs directly to your PC with a USB cable. We recommend that the first thing you do after taking the Modbus scanner out of the box is connect it to your PC with the provided USB cable – do not use a different cable. DO NOT apply AC or DC power to the scanner while your PC is connected to the scanner as it will disrupt the USB connection.

ScanView programming software is intuitive, and most customers can get their scanner programmed as they like without even looking in the manual.

For more information on ScanView visit

www.predig.com/ScanView

In addition to programming, the software may be used for:

• Monitoring

• Datalogging using your PC

• Generating and saving programming files for

later use

Once your Modbus scanner is programmed the way you want it, you can wire it up for your application per the instructions in this manual and install it. If you find that you need to make adjustments to the programming after the scanner is installed, you can use the programming buttons and the instructions in this manual to do so.

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Table of Contents

Introduction .......................................................................................................... 6

Ordering Information ........................................................................................... 6

Specifications....................................................................................................... 8

Operating Modes ............................................................................................. 8

Master & Snooper Settings ............................................................................. 8

PV Settings ....................................................................................................... 8

Display Settings ............................................................................................... 8

Math Functions ................................................................................................ 9

General ............................................................................................................. 9

Serial Communications ................................................................................. 10

Dual Process Input ........................................................................................ 10

Relays ............................................................................................................. 11

Isolated 4-20 mA Transmitter Output .......................................................... 11

USB Connection ............................................................................................ 12

Digital Input (F4) ............................................................................................ 12

Digital Inputs & Outputs ............................................................................... 12

ScanView Software ........................................................................................ 12

Compliance Information .................................................................................... 13

Safety .............................................................................................................. 13

Safety Information ............................................................................................. 13

Installation .......................................................................................................... 13

Unpacking ...................................................................................................... 13

Wall Mounting Instructions .......................................................................... 14

Mounting Dimensions .................................................................................. 14

Conduit Holes Location ............................................................................... 14

Pipe Mounting Instructions .......................................................................... 15

Installation Overview ..................................................................................... 16

ScanView Software ........................................................................................ 16

ScanView Installation .................................................................................. 16

ScanView Monitoring................................................................................... 17

ScanView Data Logging .............................................................................. 17

Transmitter Supply Voltage Selection (P+, P-) ........................................... 17

Connections ................................................................................................... 18

Connectors Labeling ................................................................................... 18

Power Connections ..................................................................................... 19

RS-485 Connections ................................................................................... 19

RS-485 Multi-Drop Connection ................................................................... 19

RS-485 Serial Converters ........................................................................... 19

Digital I/O Connections................................................................................ 20

F4 Digital Input Connections ....................................................................... 20

Relay Connections ...................................................................................... 20

Switching Inductive Loads ........................................................................... 21

4-20 mA Output Connections ...................................................................... 21

Analog Output Power Supply ...................................................................... 21

Remote Operation of Scanner..................................................................... 22

Interlock Relay Feature ............................................................................... 22

Analog Input Signal Connections ................................................................ 22

Setup and Programming ................................................................................... 23

Overview ......................................................................................................... 23

LED Status Indicators ................................................................................... 23

Programming Buttons ................................................................................... 25

Display Functions & Messages .................................................................... 26

Menu Navigation Tip ..................................................................................... 29

Setting Numeric Values ................................................................................ 29

Main Menu ...................................................................................................... 29

Serial Communications (serial) ................................................................. 30

Scanner Mode Selection ............................................................................... 31

Operating Modes (nmode) ........................................................................... 31

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

How to Enable Process Variables (PVs) ...................................................... 31

Master Mode (nmastr) ................................................................................ 32

Snooper Mode (Snoopr) ............................................................................. 33

How to Select 5 or 6-Digit Registers ............................................................ 34

Slave Mode (SlaVe) .................................................................................... 34

Setting Up the Scanner (setup) .................................................................... 35

Setting Up the Process Variables (PVs) (pV setup) .................................. 36

Setting the Display Decimal Point (disp.dp) ................................................ 37

Setting the Float Decimal Point (Flot..dp).................................................... 37

Scaling the PV Display Values (sCale)....................................................... 37

Setting Up the Displays (dsplay setup) ..................................................... 38

Display Line 1 Parameters (Line 1 dsplay) ............................................. 38

Display Line 2 Parameters (Line 2 dsplay) ............................................. 38

Display Intensity (d-IntY) ........................................................................... 38

Display Line 1 Menu (Line 1 dsplay) ...................................................... 39

Display Line 2 Menu (Line 2 dsplay) ...................................................... 40

Setting the Tags (tAg) & Units (units) ....................................................... 41

Application Example 1 ................................................................................. 41

Application Example 2 ................................................................................. 43

Setting the Relay Operation (relay) ............................................................ 44

Relay Setup Menu (relay setup) ............................................................. 44

Setting the Relay Action (act 1)................................................................. 45

Programming Set and Reset Points ............................................................ 45

Setting Fail-Safe Operation (failsf).......................................................... 45

Programming Time Delay (delay) .............................................................. 45

Relay Action for Communications Break (break) ....................................... 45

Relay Action for Loss of 4-20 mA Input (Loop Break) ................................. 46

Time Delay Operation ................................................................................. 46

Relay Sampling Operation .......................................................................... 46

Relay and Alarm Operation Diagrams ......................................................... 47

High Alarm Operation (Set > Reset) .............................................................. 47

Low Alarm Operation (Set < Reset) ............................................................ 47

High Alarm with Fail-Safe Operation (Set > Reset) ..................................... 47

Low Alarm with Fail-Safe Operation (Set < Reset) ..................................... 47

Pump Alternation Control Operation ........................................................... 48

Relay Operation After Communications Break............................................ 48

Relay Operation Details ................................................................................ 49

Overview ..................................................................................................... 49

Relays Auto Initialization ............................................................................. 49

Fail-Safe Operation (failsf) ...................................................................... 49

Front Panel LEDs ........................................................................................ 49

Latching and Non-Latching Relay Operation .............................................. 49

Non-Latching Relay (Auto) ......................................................................... 50

Non-Latching Relay with Manual Reset (A-nman) ....................................... 50

Latching Relay (LatcH) ............................................................................... 50

Latching Relay with Clear (Lt-Clr) ............................................................ 50

Acknowledging Relays ................................................................................ 51

Pump Alternation Control Applications (Altern) ........................................ 51

Setting Up the Interlock Relay (Force On) Feature ..................................... 52

Scaling the 4-20 mA Analog Output (Aout) ................................................. 52

Setting Up the Password (pass) ................................................................... 53

Protecting or Locking the Scanner .............................................................. 53

Making Changes to a Password Protected Scanner ................................... 53

Disabling Password Protection.................................................................... 53

Advanced Features Menu ............................................................................. 54

Advanced Menu Navigation Tips................................................................. 54

Advanced Features Menu & Display Messages.......................................... 54

Scan Function (SCan) .................................................................................. 56

Manual Control Menu (Contrl)................................................................... 57

Noise Filter (filter) ................................................................................... 58

Noise Filter Bypass (bypass) ...................................................................... 58

Rounding Feature (round) .......................................................................... 58

Select Menu (SELect) ................................................................................. 58

Low-Flow Cutoff (CutofF) ........................................................................... 66

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Analog Output Source Programming (aoutpr) ........................................... 66

Programmable Function Keys User Menu (user) ....................................... 68

Digital Input Menu (dI 1) ............................................................................ 69

Digital Output Menu (dO 1) ......................................................................... 69

Reset Menu (reset).................................................................................... 69

Input Calibration (ICAL) ............................................................................... 70

Recalibrating the Analog Input Channels (Ch-A & Ch-B) ............................ 70

Troubleshooting................................................................................................. 71

Diagnostics Menu (diag) .............................................................................. 72

Determining Software Version..................................................................... 72

Reset Scanner to Factory Defaults ............................................................. 72

Testing the Display LEDs ............................................................................ 72

Scanner Operation ............................................................................................. 73

Button Operation ........................................................................................... 73

Function Keys Operation .............................................................................. 73

Digital Inputs Operation ................................................................................ 73

Maximum/Minimum Readings ...................................................................... 73

Factory Defaults & User Settings ................................................................. 74

Table of Figures

Figure 1. Scanner Mounting Holes Location ................................................... 14

Figure 2. Scanner Mounting Holes Dimensions ............................................. 14

Figure 3. Scanner Dimensions – Side View..................................................... 14

Figure 4. Scanner Dimensions - Front View .................................................... 14

Figure 5. Conduit Holes Location – Bottom View ........................................... 14

Figure 6. Vertical Pipe Mount Assembly.......................................................... 15

Figure 7. Horizontal Pipe Mount Assembly ..................................................... 15

Figure 8. Transmitter Supply Voltage Selection ............................................. 17

Figure 9. PD2-6080/1-6H0 / 7H0 Connectors Label ......................................... 18

Figure 10. PD2-6080/1-6H7 / 7H7 Connectors Label ....................................... 18

Figure 11. Power Connections ......................................................................... 19

Figure 12. RS-485 Connection .......................................................................... 19

Figure 13. Five-Wire RS-485 Connections ....................................................... 19

Figure 14. Three-Wire RS-485 Multi-Drop Connections ................................. 19

Figure 15. Connections for RS-485 Connector to Serial Converter .............. 20

Figure 16. Three-Wire RS-485 Connection ...................................................... 20

Figure 17. Digital Input and Output Connections ........................................... 20

Figure 18. F4 Digital Input Connections .......................................................... 20

Figure 19. Relay Connections........................................................................... 20

Figure 20. AC and DC Loads Protection .......................................................... 21

Figure 21. Low Voltage DC Loads Protection ................................................. 21

Figure 22. 4-20 mA Output Connections ......................................................... 21

Figure 23. Analog Output Supply Powering Other Devices........................... 21

Figure 24. Meter to PDA2364-MRUE Control Station Connection ................. 22

Figure 25. Interlock Connections ..................................................................... 22

Figure 26. Transmitters Powered by Internal Supply ..................................... 22

Figure 27. Transmitter Powered by Ext. Supply or Self-Powered ................. 22

Figure 28. Voltage Input Connections ............................................................. 22

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Introduction

The Helios PD2-6080 and PD2-6081 Large Display Modbus® Scanners are multi-purpose, easy to use, digital scanners that can be programmed as a Modbus RTU Master, Slave, or Snooper. They feature large 1.8 inch superluminous LED digits, which can be read in direct sunlight from up to 100 feet away, and are capable of scanning up to 16 variables generated by any Modbus device. The PD2-6080 displays in decimal format, while the PD2-6081 has a feet & inches display. They are housed in a waterresistant, field mountable NEMA 4X/IP65 rated enclosure for convenient indoor or outdoor installation.

The programming buttons are located behind the lower panel door and are not generally accessible during operation. For that reason, we recommend the use of the PDA2364-MRUE remote control station which has four buttons to mimic the buttons behind the panel.

In master mode, the Helios reads up to 16 slave devices, scales the data from each, displays the result, and operates the internal relays and 4-20 mA output. The scanners are capable of polling up to 16 process variables (PVs) and displaying them in sequence at a user programmable scan rate. They also allow other Helios Modbus Scanners in snooper mode to read any of the variables being polled by the master. As a snooper, the scanners listen to the Modbus traffic and pick up a specific register or registers being polled by a master device from a specific slave device and process the data being read. In slave mode, they are controlled by a master device. The data sent to them by the master is scaled, displayed, and used to operate the relays and 4-20 mA output.

The Helios PD2-6080 and PD2-6081 come equipped with dual analog input channels (4-20 mA and/or 0-10 VDC) for use in Master mode. These can be assigned to mA or volts by mapping a PV to the internal scanner addresses 256-259, depending on the desired function.

Various math functions may be applied to the Modbus and analog inputs including addition, difference, absolute difference, average, weighted average, multiplication, division, minimum, maximum, draw, ratio, and concentration. This is in addition to the input signal conditioning functions (linear, square root, programmable exponent, or round horizontal tank calculations). The displays, relays, and the analog outputs may be assigned to PVs or to math channels C1, C2, C3, or C4. The digital inputs/outputs can be custom-programmed for specific operations.

A fully loaded Helios PD2-6080 or PD2-6081 scanner comes with four SPDT relays, a 4-20 mA output, two 24 VDC power supplies, five digital inputs and four digital outputs, and RS-485 serial communications.

Free ScanView software allows the Helios Modbus Scanner to be accessed via a computer. Configure multiple scanners, conveniently monitor critical information, and data log right from a PC with ease, further increasing plant efficiency.

Ordering Information

85-265 VAC Models

Model

Standard Features

Options Installed

Decimal Display

PD2-6080-6H0

5 Digital Inputs, 4 Digital Outputs, RS-485 Communications

No options

PD2-6080-6H7

4 relays 4-20 mA output

Feet & Inches Display

PD2-6081-6H0

5 Digital Inputs, 4 Digital Outputs, RS-485 Communications

No options

PD2-6081-6H7

4 relays 4-20 mA output

12-24 VDC Models

Model

Standard Features

Options Installed

Decimal Display

PD2-6080-7H0

5 Digital Inputs, 4 Digital Outputs, RS-485 Communications

No options

PD2-6080-7H7

4 relays 4-20 mA output

Feet & Inches Display

PD2-6081-7H0

5 Digital Inputs, 4 Digital Outputs, RS-485 Communications

No options

PD2-6081-7H7

4 relays 4-20 mA output

Accessories

Model

Description

PDA0004

Cable Gland

PDA7485-I

RS-232 to RS-485 isolated converter

PDA8485-I

USB to RS-485 isolated converter

PDAPLUG2

Plastic Conduit Plug

PDX6901

Snubber: 0.01 μF/470 Ω, 250 VAC

PDA2360 Control Stations

Model

Description

PDA2360-E

Emergency button

PDA2361-A

Ack button

PDA2361-B

Blank button

PDA2361-R

Reset button

PDA2361-T

Tare button

PDA2361-S

Stop button

PDA2361-Q

Silence button

PDA2362-AR

Ack and Reset buttons

PDA2362-BB

Two blank buttons

PDA2364-MRUE

Menu, right, up, enter buttons

Note: Control stations can be connected directly to the Helios scanner’s on-board digital inputs. See Remote Operation of Scanner on page 22 for details.

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Light / Horn Accessories

Helios Scanner Shown with MOD-PD2LHRB1 Red Light / Horn and Button. Scanner Sold Separately.

Model

Description

MOD-PD2LHRB1

Red Light / Horn and Button Mounted and Wired to Helios

(1)

MOD-PD2LHGB1

Green Light / Horn and Button Mounted and Wired to Helios

(1)

MOD-PD2LHYB1

Yellow Light / Horn and Button Mounted and Wired to Helios

(1)

MOD-PD2LHBB1

Blue Light / Horn and Button Mounted and Wired to Helios

(1)

MOD-PD2LHWB1

White Light / Horn and Button Mounted and Wired to Helios

(1)

MOD-PD2LH5CB1

Light / Horn with User Choice of Red, Green, Yellow, Blue or White Light, Button, Mounted and Wired to Helios

(1)

MODPD2LH3CB1-RYG

Light / Horn with Red, Yellow, Green Light Layers, Button, Mounted and Wired to Helios

(1)

Note:

1. Specify MOD-PD2LH model as a separate item on the order for the Helios to order the Light / Horn & Button accessory installed and wired. Scanner is sold separately.

9 labels are provided for the button.

Pipe Mounting Kit

Helios Scanner Shown mounted to pipe using PDA6260 pipe mounting kit. See Pipe Mounting Instructions on page 15 for details.

Model

Description

PDA6260

2" Pipe Mounting Kit for PD2

Signal Splitter & Conditioner Accessories

Model

Description

PD659-1MA-1MA

Signal Isolator with One 4-20 mA Input and One 4-20 mA Output

PD659-1MA-2MA

Signal Splitter with One 4-20 mA Input and Two 4-20 mA Outputs

PD659-1V-1MA

Signal Conditioner with One 0-10 VDC Input and One 4-20 mA Output

PD659-1MA-1V

Signal Conditioner with One 4-20 mA Input and One 0-10 VDC Output

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Specifications

Except where noted all specifications apply to operation at +25°C.

Operating Modes

Master

Processes data read from Modbus RTU slave devices. It polls up to 16 process variables from 1 to 16 slave devices. The Master is capable of scanning the selected PVs, scaling the data, triggering relays, performing math operations, and driving the analog outputs.

Snooper

Listens to the Modbus traffic and picks up a specific register or registers being polled by a master device from a specific slave device and processes the data being read. The Snooper mode handles the data the same way as the Master.

Slave

Processes data sent to it from a Modbus RTU master device.

Note: The relays and the 4-20 mA outputs are functional in all modes.

Master & Snooper Settings

PV Number

PV1–PV16 Enable or disable the process variables to be polled by the Master.

Slave Id

Assign the slave ID or address (1-247, 256-259 for mA or volts inputs) containing the process variables to be displayed by the selected PV.

Function Code

Select which Modbus function code (03, 04, or 65) to use in reading the slave device.

5 digit: 30001-39999, 40001-49999, or 1-65,536 6 digit: 300001-365536 or 400001-465536 (Function Code 65 N/A here) Specifies which register(s) to read in the slave device. Range is dependent on Function Code selection (65, 04, or 03) and digits selection (5 or 6).

Data Type

Select the data format that the slave device uses. Select between Short integer (2 byte), Long integer (4 byte), or floating point (4 byte), Signed or Unsigned (integer only) and byte order: 1234, 4321, 2143, or 3412 (big-endian vs. little-endian, or swapped).

Poll Time

1.0 to 99.9 sec. Time between readcommands (Master mode).

Slave Response Timeout

0.0 to 99.9 seconds: Time allowed for the slave to respond before the scanner generates a communication break condition. The master polls the slave 3 times before starting the response timeout timer. Slave/Snooper mode: Time the scanner will wait for new data before going into break condition. Slave mode: Programming 0 disables the timeout; the last value received will be displayed indefinitely.

Communication Break

Displays brEAK after the Master has polled the slave device 3 times and the response timeout has elapsed. The Snooper and Slave modes go into break condition after no new data is received within the response timeout window. Relays can be programmed to go on, off, or ignore the break condition. The analog outputs can be setup to generate a fixed mA current when a break condition is detected.

PV Settings

Tag & Units

6-character, independent tag and units for each PV and math channel

PV Format

PD2-6080 default: Decimal format PD2-6081 default: FT & IN, 1/8th or 1/16th; decimal format may be selected for line 2 indication.

Display Decimal Point

Up to five decimal places or none:

d.ddddd, dd.dddd, ddd.ddd, dddd.dd, ddddd.d, or dddddd

Float Decimal Point

Select the number of decimals to use for the floating point data expected from the slave or master device (this is independent from the display decimal point selection).

PV & Math Scaling

All PVs and math channels may be scaled to represent the input data in any engineering unit. Example: Level transmitter = 999.999 inches; to display in Ft-In-1/16th scale input 2 to display 83 Ft – 4 In – 0/16th.

Display Settings

Scan Mode

Automatic: 1.0 to 99.9 sec Manual: Front panel or digital inputs Go on alarm: Continues scanning after an

alarm is detected Stop on alarm: Goes to the alarmed PV and stops scanning; press Scan to resume scanning.

Display Scan Rate

Master/Snooper: 1 PV/second to 1 PV every 99.9 seconds Slave: Dependent on master device (e.g. PLC)

Note: The display scan rate is independent of the poll time.

Display Assignment

Display line 1: PV, Ch-C (math channel), PV & units, tag & PV, tag-PV-units, Ch-C & units, tag-Ch-C-unit, set points, max/min PV, max/min Ch-C.

Display line 2: Same as Display Line 1; plus units, tag or turned off.

The tag and units are displayed alternately for 2 seconds max, when selected. Different tags & PVs may be selected to display on line 1 & 2 at the same time.

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Math Functions

Name

Math Operation (Examples)

(P = Adder, F = Factor)

Setting Addition

(PV1+PV2+P)*F

Sunm

Difference

(PV1-PV2+P)*F

diF

Absolute difference

((Abs(PV1- PV2)+P)*F

diFAbS Average

(((PV1+PV2)/2)+P)*F

AvG

Multiplication

((PV1*PV2)+P)*F

Nmulti

Division

((PV1/PV2)+P)*F

divide

Max PV

Max value of all selected PVs

Hi-pv

Min PV

Min value of all selected PVs

Lo-pv

Draw

((PV1/PV2)-1)*F

drAuw

Weighted average

((PV2-PV1)*F)+PV1

uwavg Ratio

(PV1/PV2)*F

Ratio

Concentration

(PV1/(PV1+PV2))*F

Concen

Math 2

Math on other math channels

Nmath2

Programmable Constants

Constant P (Adder): -99.999 to 999.999, default: 0.000

Constant F (Factor): 0.001 to 999.999, default: 1.000

General

Input/output

Modbus RTU over RS-485 Two analog inputs (4-20 mA, 10 V)

Display

Dual-line: 1.8" (46 mm) high, red LEDs 6 digits per line (-99999 to 999999), with

lead zero blanking

Display Intensity

Eight user selectable intensity levels. Default value is six.

LED Status Indicators

See LED Status Indicators on page 23 for details.

Overrange

Display flashes 999999

Underrange

Display flashes -99999

Programming Methods

Four programming buttons, digital inputs, PC and ScanView software, or Modbus registers.

Max/Min Display

Max/min readings are stored until reset by the user or when power to the scanner is turned off. User can reset by front panel pushbuttons, digital input, or via Modbus registers.

Rounding

Select 1, 2, 5, 10, 20, 50, or 100 (e.g. rounding = 10, value = 123.45,

display = 123.50).

Password

Three programmable passwords restrict modification of programmed settings.

Pass 1: Allows use of function keys and digital inputs Pass 2: Allows use of function keys, digital inputs and editing set/reset points Pass 3: Restricts all programming, function keys, and digital inputs.

Non-Volatile Memory

All programmed settings are stored in nonvolatile memory for a minimum of ten years, with or without power.

Power Options

85-265 VAC 50/60 Hz; 90-265 VDC, 20 W max; 12-24 VDC, 12-24 VAC, 15 W max. Powered over USB for configuration only.

Fuse

Required external fuse: UL Recognized, 5 A max, slow blow; up to 6 scanners may share one 5 A fuse.

Isolation

4 kV input/output-to-power line 500 V input-to-output or output-to-P+ supply

Overvoltage Category

Installation Overvoltage Category II: Local level with smaller transient overvoltages than Installation Overvoltage Category III.

Environmental

Operating temperature range:

-40 to 65°C (-40 to 149°F)

Storage temperature range:

-40 to 85°C (-40 to 185°F)

Relative humidity:

0 to 90% non-condensing

Note: Printed circuit boards are conformally

coated.

Connections

Power, signal, relays, mA out: Removable screw terminal blocks accept 12 to 22 AWG wire.

RS-485: Removable screw terminal block accepts 16 to 30 AWG wire.

Digital I/O: Non-removable screw terminal blocks accept 16 to 30 AWG wire.

Enclosure

UL Type 4X, IP65 rated. Polycarbonate & glass blended plastic case, color: gray. Includes four PG11 through-hole conduit openings, with two factory installed PG11, IP68, black nylon threaded hole plugs with backing nuts.

Mounting

Wall Mounting: Four (4) mounting holes provided for mounting scanner to wall. See Wall Mounting Instructions on page 14 for additional details.

Pipe Mounting: Optional pipe mounting kit (PDA6260) allows for pipe mounting. Sold separately. See Pipe Mounting Instructions on page 15 for additional details.

Tightening Torque

Power, signal, relays, mA out terminals: 5 lb-in (0.56 Nm)

Digital I/O and RS-485:

2.2 lb-in (0.25 Nm)

Overall Dimensions

10.63" x 12.59" x 4.77" (270 mm x 319.7 mm x 121.2 mm) (W x H x D)

Weight

6.10 lbs (2.76 kg)

Warranty

3 years parts & labor. See Warranty Information and Terms & Conditions on

www.predig.com for complete details.

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Serial Communications

Compatibility

EIA-485

Connectors

Removable screw terminal connector

Max Distance

3,937' (1,200 m) max

Status Indication

Separate LEDs for Power (P), Transmit (TX), and Receive (RX)

Scanner ID

1 – 247 (Scanner Modbus address)

Baud Rate

300 – 19,200 bps

Transmit Time Delay

Programmable 0 to 4999 ms This is the time the scanner will wait for a

slave to respond before sending another request on the bus. This value should be greater than 100 ms to avoid collisions on the bus.

Data

8 bits (1 start bit, 1 or 2 stop bits)

Parity

Even, Odd, or None with 1 or 2 stop bits

Byte-To-Byte Timeout

0.01 – 2.54 second

Turn Around Delay

Less than 2 ms (fixed)

Note: Refer to the Helios Scanner Modbus Register Tables located at www.predig.com for details.

Dual Process Input

Two Inputs

Two non-isolated analog inputs, independent field selectable: 0-20 mA, 4-20 mA; 10 V (0-5, 1-5, 0-10 V)

Isolated Transmitter Power Supply

Terminals P+ & P-: 24 VDC 10%. All models selectable for 24, 10, or 5 VDC

supply (Switch labeled P+/P-). 85-265 VAC models rated @ 200 mA max, 12-24 VDC powered models rated @ 100 mA max. 5 & 10 VDC supply rated @ 50 mA max. Refer to Transmitter Supply Voltage Selection (P+, P-) on page 17.

PV Analog Channel ID

Ch-A mA: Assign PV to ID 256 or Ch-A volt: 257;

Ch-B mA: Assign PV to ID 258 or Ch-B volt: 259

Accuracy

±0.03% of calibrated span ±1 count, square root & programmable exponent accuracy range: 10-100% of calibrated span

Temperature Drift

0.005% of calibrated span/C max from 0 to 65C ambient,

0.01% of calibrated span/C max from

-40 to 0C ambient

Input Signal Conditioning

Linear, square root, programmable exponent, or round horizontal tank volume calculation

Multi-Point Linearization

2 to 32 points for PV1 and PV2

Programmable Exponent

User selectable from 1.0001 to 2.9999 for open channel flow

Round Horizontal Tank

Diameter & Length: 999.999 inch or cm calculates volume in gallons or liters respectively.

Low-Flow Cutoff

0.1 to 999,999 (0 disables cutoff function) for PV1 and PV2. Point below at which display always shows zero.

Calibration Range

Input Range

Minimum Span Input 1 & Input 2

4-20 mA

0.15 mA

10 V

0.10 V

An error message will appear if the input 1 & input 2 signals are too close together.

Input Impedance

Voltage ranges: greater than 500 k Current ranges: 50 - 100  (depending on internal resettable fuse impedance)

Input Overload

Current input protected by an internal resettable fuse, 30 VDC max. Fuse resets automatically after fault is removed.

HART Transparency

The scanner can support ONLY one HART loop on either of the inputs. A signal isolator, such as the PD659 is required if two HART loops are being connected.

Under the described conditions, the scanner does not interfere with existing HART communications; it displays the 4-20 mA primary variable and it allows the HART communications to pass through without interruption. The scanner is not affected if a HART communicator is connected to the loop. The scanner does not display secondary HART variables.

Page 11

Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Relays

Rating

4 SPDT (Form C) internal and rated 3 A @ 30 VDC and 125/250 VAC resistive load; 1/14 HP (≈ 50 W) @ 125/250 VAC for inductive loads

Noise Suppression

Noise suppression is recommended for each relay contact switching inductive loads to prevent disruption to the microprocessor’s operation. Recommended suppressor value: 0.01 µF/470 , 250 VAC (PDX6901). See Switching Inductive Loads on page 20 for details.

Deadband

0-100% of span, user programmable

High or Low Alarm

User may program any alarm for high or low trip point. Unused alarm LEDs and relays may be disabled (turn off).

Relay Operation

• Automatic (non-latching) and/or manual reset

• Latching (requires manual acknowledge) with or without clear

• Pump alternation control (2-4 relays)

• Sampling (based on set point and time)

• Off (disable unused relays and enable

Interlock feature)

• Manual on/off control mode

Relay Reset (Acknowledge)

User selectable via front panel button, F4 digital input, external contact closure on digital inputs, or through serial communications.

Time Delay

0 to 999.9 seconds, on & off relay time delays. Programmable and independent for each relay

Fail-Safe Operation

Programmable and independent for each relay.

Note: Relay coil is energized in non-alarm condition. In case of power failure, relay will go to alarm state.

Auto Initialization

When power is applied to the scanner, relays will reflect the state of the input to the scanner.

Isolated 4-20 mA Transmitter Output

Output Source

PV1-16, math channels C1-4, set points 1-4, or manual control mode

Scaling Range

1.000 to 23.000 mA for any display range

Calibration

Factory calibrated:

4.000 to 20.000 = 4-20 mA output

Analog Out Programming

23.000 mA maximum for all parameters: Overrange, underrange, max, min, and break

Communications Break

Programmable mA output when a slave device does not reply within the response timeout.

Accuracy

± 0.1% of span ± 0.004 mA

Temperature Drift

0.4 µA/C max from 0 to 65C ambient,

0.8 µA/C max from -40 to 0C ambient.

Note: Analog output drift is separate from input drift.

Isolated Transmitter Power Supply

Terminals I+ & R: 24 VDC  10%. May be used to power the 4-20 mA output or other devices. All models rated @ 40 mA max.

External Loop Power Supply

35 VDC maximum

Output Loop Resistance

Power supply

Minimum

Maximum

24 VDC

10 

700 

35 VDC (external)

100 

1200 

0-10 VDC Output

The PD659-1MA-1V can convert the optional 4-20 mA output to a 0-10 VDC output

Page 12

Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

USB Connection

Function

Programming only

Connector Type

Type B receptacle

Cable

USB Type A-B cable

Driver

Microsoft® Windows® XP/Vista/7/8/10

Power

USB port provides power to the scanner.

DO NOT apply AC or DC power to the scanner while the USB port is in use.

Digital Input (F4)

Function

Remote operation of front-panel buttons, acknowledge/reset relays, reset max/min values. See Function Keys & Digital I/O Available Settings on page 68 for a complete list of capabilities.

Contacts

3.3 VDC on contact. Connect normally open contacts across F4 to COM

Logic Levels

Logic High: 3 to 5 VDC Logic Low: 0 to 1.25 VDC

Digital Inputs & Outputs

Function

Terminals provided for remote operation of all four programming / operation buttons (use PDA2364-MRUE control station). Other uses include acknowledge/reset relays and reset max/min values. See

Function Keys & Digital I/O Available Settings on page 68 for a complete list of

capabilities.

Channels

4 digital inputs & 4 digital outputs

Digital Input Logic High

3 to 5 VDC

Digital Input Logic Low

0 to 1.25 VDC

Digital Output Logic High

3.1 to 3.3 VDC

Digital Output Logic Low

0 to 0.4 VDC

Source Current

10 mA maximum output current

Sink Current

1.5 mA minimum input current

+5 V Terminal

To be used as pull-up for digital inputs only. Connect normally open push buttons across +5 V & DI 1-4.

• DO NOT use +5 V terminal to power external devices.

ScanView Software

Availability

Download directly from scanner or from

www.predig.com/download_software

System Requirements

Microsoft® Windows® XP/Vista/7/8/10

Communications

USB 2.0 (for programming only) (Standard USB A to USB Type B)

RS-485 to USB converter (programming, monitoring, and data logging)

Configuration

Configure scanners one at a time

Power

USB port provides power to the scanner.

DO NOT apply AC or DC power to the scanner while the USB port is in use.

Page 13

Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Compliance Information

Safety

UL & C-UL Listed

USA & Canada UL 508 Industrial Control Equipment (USA)

C22.2 No. 142 (Canadian National Standard)

UL File Number

E160849

Enclosure

UL Type 4X, NEMA 4X, IP65

Low Voltage Directive

EN 61010-1 Safety requirements for measurement, control, and laboratory use

Safety Information

• Read complete instructions prior to installation and operation of the scanner.

• Risk of electric shock or personal injury.

• Hazardous voltages exist within enclosure.

Installation and service should be performed only by trained service personnel.

Installation

There is no need to open the clear plastic front cover in order to complete the installation, wiring, and setup of the scanner. All programming is done using MeterView Pro software or through the buttons and switches located under the lower door panel and are accessible by removing the single securing screw. Wires should be run through the knockout holes located on the bottom of the scanner, see Figure 5. Conduit Holes Location – Bottom View on page 14 for details.

There are a total of four pre-drilled conduit entry holes located at the bottom of the scanner. If the need to drill additional holes arises, make sure you will have the clearance necessary for conduit mounting hardware.

Do not disconnect the RJ45 connector found on the right side of the scanner wiring board. Doing so will disable the on-board digital I/O, RS-485 serial communications, and M-Link functionality.

Instructions are provided for changing the transmitter power supply to output 5 or 10 VDC instead of 24 VDC, see Figure 8. Transmitter Supply Voltage Selection on page 17.

Unpacking

Remove the scanner from box. Inspect the packaging and contents for damage. Report damages, if any, to the carrier. If any part is missing or the scanner malfunctions, please contact your supplier or the factory for assistance.

Page 14

Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Wall Mounting Instructions

The scanner can be mounted to any wall using the four provided mounting holes. Note that the bottom mounting holes are located underneath the lower door panel. To mount the scanner to a wall, follow these instructions

• Prepare a section of wall approximately 11" x 13" (280 mm x 330 mm) for scanner mounting by marking with a pencil the mounting holes (shown in Figure 1) on the wall.

• Select the appropriate mounting screws for the mounting surface to be used. The mounting holes diameter is shown on Figure 2.

Note: Mounting screws are not included.

• Using a drill bit slightly smaller than the girth of the mounting screws, pre-drill holes at the mounting locations previously marked.

• Insert mounting screws into the four mounting holes and screw them into the pre-drilled holes. DO NOT overtighten the mounting screws as it is possible that the enclosure could crack and become damaged.

Figure 1. Scanner Mounting Holes Location

Figure 2. Scanner Mounting Holes Dimensions

Mounting Dimensions

Figure 3. Scanner Dimensions – Side View

Figure 4. Scanner Dimensions - Front View

Conduit Holes Location

Figure 5. Conduit Holes Location – Bottom View

Mounting Hole

Lower Door Panel

10.43" (265 mm)

9.8" (249 mm)

11.14" (283 mm)

Dia. 0.2" (5.5 mm)

2.63" (67 mm)

4.77"

(121.2 mm)

10.63" (270 mm)

12.59" (319.7 mm)

Mounting HoleMounting Hole

Lower Door Panel

Plugged

Holes

Unplugged

Holes

1.1"

(27.9 mm)

1.99"

(50.5 mm)

0.9"

(23 mm)

Ø0.74" (18.9 mm)

Drill or Punch-Out Holes

Page 15

Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Pipe Mounting Instructions

The scanner can also be mounted to a pipe using the optional pipe mounting kit (PDA6260). This kit includes two mounting plates, two U-bolts, and the necessary nuts and bolts. To mount the scanner to a pipe using the pipe mounting kit accessory, follow these instructions.

• Secure the mounting plates to the top and bottom (for vertical pipes) or left and right (for horizontal pipes) of the reverse side of the scanner enclosure using the provided fasteners. DO NOT overtighten the fasteners as it could cause damage to the enclosure.

• Using the provided nuts and U-bolts, secure the mounting plates to the pipe applying enough torque such that the scanner cannot be moved up or down (or side to side).

Figure 6. Vertical Pipe Mount Assembly

Figure 7. Horizontal Pipe Mount Assembly

Mounting Plate

U-Bolt

Pipe

U-Bolt

Back of Meter

Mounting Plate

Mounting

Plate

Mounting

Plate

Pipe

Back of

Meter

U-BoltU-Bolt

Page 16

Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Installation Overview

We recommend the following sequence for getting the scanner into service:

1. DO NOT apply AC or DC power to the scanner.

2. Connect the scanner to the PC with the USB cable provided. DO NOT use a different USB cable.

3. If ScanView (SV) is already installed in your computer, then the program will launch automatically in most systems. If the program does not start automatically, double-click on the SV icon.

4. If SV is not installed, follow the instructions provided below.

5. Use SV to configure the scanner for your application.

6. Disconnect the USB cable from the scanner.

7. Apply power and signal and check operation of the scanner.

8. Install the scanner and put into service.

9. Make any programming adjustments using the programming buttons.

ScanView Software

The easiest and quickest way to program your Helios scanner is to use the FREE ScanView programming software. This software is loaded into the scanner and connects and installs directly to your PC with the USB cable provided. DO NOT use a different USB cable. We recommend that the first thing you do after taking the scanner out of the box is connect the Helios to your PC with the provided USB cable. DO NOT apply AC or DC power to the scanner while your PC is connected to the scanner as it will disrupt the USB connection. It is not necessary to apply an input signal.

ScanView programming software is intuitive, and most customers can get their scanner programmed as they like without even looking in the manual.

For more information on ScanView visit

www.predig.com/ScanView

ScanView Installation

1. Connect one end of the provided USB cable

to the scanner and the other end to the computer. The computer will automatically install the driver software it needs to talk to the scanner. Follow the on-screen instructions and allow sufficient time for the process to complete. This can take a few minutes. If the process is interrupted, then it could leave the system in an unstable condition.

• Only one scanner may be connected at a time. Attaching multiple scanners will cause a conflict with the scanner software.

• DO NOT apply AC or DC power to the scanner when using the USB connection.

2. Once the driver is installed, an AutoPlay dialog should appear for the drive

“MAINSTAL.” Click “Open folder to view

files.”

If the computer does not display an AutoPlay dialog for the drive “MAINSTAL,” you should open My Computer and double-click on the drive labeled “MAINSTAL.”

3. Double-click on the file named “MSStart.” The program will open a few windows and install two programs on your computer. Simply follow the on-screen instructions until you see one of the dialogs below. If you

receive a “User Account Control” warning,

click “Yes.”

4. If there is an update available, click the

“Update” button to install the new version. Otherwise, click “Configure” to begin

programming your scanner.

Note: If you decide to update your ScanView software, once the installation has completed, you will be asked if you want to update the setup files located on the scanner itself. This way, you will always have the most current version on the scanner for future installs.

• DO NOT unplug the scanner while the new installation files are being written to it. The scanner will display uwrite during the process and you will receive an on-screen notification once the process is complete.

• Do not disconnect and reconnect the scanner rapidly. Allow at least 10 seconds from disconnection before reconnecting USB to the scanner.

Page 17

Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

ScanView Monitoring

Once the scanner has been configured, the user chooses Monitor from the top menu bar. The Monitor window will appear; the enabled PVs and all associated values will take a few seconds to display.

The PVs will display as configured - either in Decimal or Feet & Inches format. Data Logging, Scanning, and Alarm Status can all be viewed at the bottom of the Monitor window.

ScanView Data Logging

ScanView software allows the user to log data and generate reports.

1. Select Monitor - Stop Scan from the top menu bar.

2. Select the Data Log drop-down menu from the top menu bar. Parameters for Data Logging are: Interval, Units, Log File Name, and Start/Pause. For Interval the choices are: 1-60, and for Unit choices for logging data are: Seconds, Minutes, and Hours.

3. Save the Data Log File. It is recommended to name the file using a unique name and the date, such as: "ScanView_1.00_Log_X_100813".

4. Select Monitor - Start Scan from the top menu bar, then select Data Log - Start from the top menu bar. The log file can be retrieved at any time by following the path:

(C:) - Program Files (x86) - PDC ScanView 1.00 - Data Log.

• Once Data Logging has begun, the Configure, Customize, and Connection screens cannot be accessed until the user has paused Data Logging.

Data Log files are saved in the Data Log folder as ".CSV" files. To view Data Log files, the user must first pause both Scanning and Data Logging. Data Logging & Scan Status can be seen at the bottom of the Monitor window.

Transmitter Supply Voltage Selection (P+, P-)

All scanners, including models equipped with the 12-24 VDC power option, are shipped from the factory configured to provide 24 VDC power for the transmitter or sensor.

If the transmitter requires 5 or 10 VDC excitation, the switch labeled P+/P- must be configured accordingly.

To access the voltage selection switch:

1. Turn off the power to the meter.

2. Unscrew and open the lower door panel.

3. Locate the P+/P- switch located in the center of the connections board (see diagram below).

4. Flip this switch into the appropriate position for the required transmitter excitation.

Figure 8. Transmitter Supply Voltage Selection

P+/P-

24V 10V 5V

MENU RIGHT UP ACK

SCAN

Page 18

Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Connections

All connections are made to screw terminal connectors located under the lower door panel. Remove the single securing screw in order to access the wiring terminals.

• Use copper wire with 60°C or 60/75°C insulation for all line voltage connections. Observe all safety regulations. Electrical wiring should be performed in accordance with all applicable national, state, and local codes to prevent damage to the meter and ensure personnel safety.

Connectors Labeling

The connectors’ label, affixed to the inside of the lower door panel, shows the location of all connectors available with

the ordered configuration.

• DO NOT connect any equipment to the RJ45 M-LINK connector. Otherwise damage will occur to the

equipment and the meter.

• DO NOT disconnect the RJ45 connector located to the left of the power terminal block. Doing so will disable

the on-board digital I/O, and the RS-485 serial communications.

Figure 9. PD2-6080/1-6H0 / 7H0 Connectors Label

Figure 10. PD2-6080/1-6H7 / 7H7 Connectors Label

RI-I+

NONC

1 2 3 4 5 6 7 8

P+/P-

24V 10V 5V

RS-485

DIGITAL I/O

M-LINK

USB

MENU RIGHT UP ACK

POWER

PWR TX R X

DI DI

DO DO

O1 O2 O3 O4 G

I1 I2 I3 I4 +5

__ __

NONCCNONCC NONCC

MA OUT

21 3

43 6521

RELAY4RELAY3

43 6521

RELAY2RELAY1

SIGNAL

Ch-A

P- F4P+ COM V+

3412 5

mA+ COM V+ mA+

7869

Ch-B

SCAN

Page 19

Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Power Connections

Power connections are made to a two-terminal connector labeled POWER on the back of the scanner. The scanner will operate regardless of DC polarity connection. The + and - symbols are only a suggested wiring convention. There are separate models for low voltage and high voltage power. See Ordering Information on page 6 for details.

Figure 11. Power Connections

RS-485 Connections

The RS-485 connections are made to a five terminal connector used for Modbus® RTU serial communications. The RS-485 terminals include Transmit Data (DO) and (/DO), Receive Data (DI) and (/DI), and Signal Ground. See Serial Communications (serial) on page 30 for more information.

There are three diagnostic LEDs: Power (PWR) Transmit Data (TX), and Receive Data (RX) to show when the meter is transmitting and receiving data from other devices.

Figure 12. RS-485 Connection

RS-485 Multi-Drop Connection

When using more than one meter in a multi-drop mode, each meter must be provided with its own unique address. The meter address (Slave ID) can be programmed between 1 and 247. The transmit delay can be set between 0 and 199 ms. The parity can be set to even, odd, or none with 1 or 2 stop bits.

To change the meter address:

1. Press and hold the Menu button for three seconds to access Advanced Features menu of the meter.

2. Press Up arrow until Serial (SEriaL) menu is displayed and press Enter, Addres is displayed.

3. Press Enter to change meter address using Right and Up arrow buttons. Press Enter to accept.

4. Press Menu button to exit and return to Run Mode.

RS-485 Serial Converters

To convert the RS-485 to RS-232, use the PDA7485-I converter. To convert the RS-485 to USB, use the PDA8485-I converter. See Ordering Information on page 6 for additional information.

RS-485 Connection Examples

Figure 13. Five-Wire RS-485 Connections

Figure 14. Three-Wire RS-485 Multi-Drop

Connections

Notes:

1. Termination resistors are optional, and values depend on the cable length and characteristic impedance. Consult the cable manufacturer for recommendations.

2. Refer to RS-232 to RS-485 Converter documentation for further details.

3. Use shielded cable, twisted-pair plus ground. Connect ground shield only at one location

AC or DC

POWER

Required External Fuse:

5 A max, 250 V Slow Blow

POWER

RS-485

PWR TX RX

DI DI DO DO

__ __

Shield

RS-232 Serial

Connection

to PC

Twisted-Pair

DI DI DO DO

__ __

RS-232 to RS-485

Converter

DIDO

Shield

Twisted-Pair

Meter #1

DI DI DO DO

__ __

DI DI DO DO

__ __

Last Meter

RS-232 Serial

Connection

to PC

RS-232 to RS-485

Converter

DIDO

Page 20

Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

RS-485 Converter Connections

Figure 15 below details the wiring connections from the RS-485 connector to an RS-485 serial converter (such as the PDA7485-I or PDA8485-I) for a five-wire network.

RS-485 Connector to RS-485

Serial Converter Connections

RS-485 Connector

RS-485 to USB or RS-232 Converter

DO DI DO DI

DI DO

Figure 15. Connections for RS-485 Connector to

Serial Converter

Three-Wire Connection

In order to wire the five pins for use as a three-wire half-duplex RS-485 connection, it is necessary to create a jumper connection between DI to DO and /DI to /DO- as shown below.

Figure 16. Three-Wire RS-485 Connection

Digital I/O Connections

Digital inputs and outputs are provided in order to expand the functionality of the meter. Digital input connections are made via a push button or switch to the appropriate digital input terminal and the +5 VDC terminal. Digital output connections are made by wiring from the appropriate digital output terminal to the ground terminal.

Figure 17. Digital Input and Output Connections

F4 Digital Input Connections

A digital input, F4, is standard on the scanner. This digital input connected with a normally open contact across F4 and COM, or with an active low signal applied to F4. It can be used for remote operation of front-panel buttons, to acknowledge/reset relays, or to reset max/min values. See Function Keys & Digital I/O Available Settings on page 68 for a complete list of capabilities.

Figure 18. F4 Digital Input Connections

Relay Connections

Relay connections are made to two six-terminal connectors labeled RELAY1 – RELAY4. Each relay’s C terminal is common only to the normally open (NO) and normally closed (NC) contacts of the

corresponding relay. The relays’ C terminals should

not be confused with the COM (common) terminal of the INPUT SIGNAL connector.

Figure 19. Relay Connections

__ __

DI DI DO DO

O1 O2 O3 O4 G

I1 I2 I3 I4+5

Ground

5 VDC

C NONO NC NC C

RELAY4 RELAY3

4 36 5 2 1

C NONO NC NC C

RELAY2 RELAY1

4 36 5 2 1

Page 21

Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Switching Inductive Loads

The use of snubbers to suppress electrical noise is strongly recommended when switching inductive

loads to prevent disrupting the microprocessor’s

operation. The snubbers also prolong the life of the relay contacts. Suppression can be obtained with resistor-capacitor (RC) networks assembled by the user or purchased as complete assemblies. Refer to the following circuits for RC network assembly and installation:

Figure 20. AC and DC Loads Protection

Choose R and C as follows: R: 0.5 to 1 Ω for each volt across the contacts C: 0.5 to 1 µF for each amp through closed contacts

Notes:

1. Use capacitors rated for 250 VAC.

2. RC networks may affect load release time of solenoid loads. Check to confirm proper operation.

3. Install the RC network at the scanner's relay screw terminals. An RC network may also be installed across the load. Experiment for best results.

Use a diode with a reverse breakdown voltage two to three times the circuit voltage and forward current at least as large as the load current.

Figure 21. Low Voltage DC Loads Protection

RC Networks (Snubbers) Available from Precision Digital

RC networks are available from Precision Digital and should be applied to each relay contact switching an inductive load. Part number: PDX6901.

Note: Relays are de-rated to 1/14 HP (50 watts) with an inductive load.

4-20 mA Output Connections

Connections for the 4-20 mA transmitter output are made to the connector terminals labeled mA OUT. The 4-20 mA output may be powered internally or from an external power supply.

Figure 22. 4-20 mA Output Connections

Analog Output Power Supply

The internal 24 VDC power supply powering the analog output may be used to power other devices, if the analog output is not used. The I+ terminal is the +24 V and the R terminal is the return.

Figure 23. Analog Output Supply Powering Other

Devices

C R

4-20 mA Input

Remote Display, PLC,

Chart Recorder, Etc.

RI- I+

132

RELAY1

mA OUT

24 V

12-35 VDC

Power

Supply

4-20 mA

Input Meter

RI- I+

132

RELAY1

321

24 V

mA OUT

Internal Power Supply

and Analog Output

321

Active Output Loop Passive Output Loop

RI- I+

132

24 VDC

Powered

Device

24 V

Page 22

Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Remote Operation of Scanner

The scanner can be operated via the programming buttons or a PDA2364-MRUE remote control station using the digital inputs and outputs connections as illustrated in Figure 24. Meter to PDA2364-MRUE Control Station Connection.

Figure 24. Meter to PDA2364-MRUE Control

Station Connection

Interlock Relay Feature

As the name implies, the interlock relay feature reassigns one, or more, alarm/control relays for use as interlock relay(s). Interlock contact(s) are wired to digital input(s) and trigger the interlock relay. This feature is enabled by configuring the relay, and the corresponding digital input(s). See Setting Up the Interlock Relay (Force On) Feature on page 52.

In the example below, an Interlock Contact switch is connected to a digital input, which will be used to force on (energize) the Interlock Relay. The Interlock Relay and the Control Relay are connected in series with the load.

• When the Interlock Contact is closed (safe), the Interlock Relay energizes, allowing power to flow to the Control Relay; the corresponding front panel LED is on.

• When the Interlock Contact is open, the corresponding front panel LED flashes (locked out), the Interlock Relay is de-energized, preventing power from flowing to the Control Relay and the load.

Figure 25. Interlock Connections

Analog Input Signal Connections

Analog input signal connections are made to a nineterminal connector labeled SIGNAL. The COM (common) terminals are the return for the 4-20 mA and the 10 V input signals. The two COM terminals connect to the same common return and are not isolated.

Current and Voltage Connections

The following figures show examples of current and voltage connections. There are no switches or jumpers to set up for current and voltage inputs. Setup and programming is performed through the programming buttons or using ScanView software.

Figure 26. Transmitters Powered by Internal

Supply

Figure 27. Transmitter Powered by Ext. Supply or

Self-Powered

The current input is protected against current overload by a resettable fuse. The display may or may not show a fault condition depending on the nature of the overload.

The fuse limits the current to a safe level when it detects a fault condition, and automatically resets itself when the fault condition is removed.

Figure 28. Voltage Input Connections

The scanner is capable of accepting any voltage from

-10 VDC to +10 VDC.

Page 23

Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Setup and Programming

There is no need to recalibrate the scanner when first received from the factory. The scanner is factory calibrated prior to shipment for milliamps and volts with

calibration equipment that is certified to NIST standards.

Overview

There are no jumpers involved in the scanner setup procedure. Setup and programming is done using ScanView software or through the programming buttons. After power and signal connections have been completed and verified, apply power to the scanner.

LED Status Indicators

PD2-6080

LED

State

Indication

1-4

Steady

Alarm condition based on set and reset points, independent of relay status in certain configurations. (Available on all meter configurations, including those without relays installed)

1-4

Flashing

Relay interlock switch open

1-4 & M

Flashing

Relay in manual control mode

Flashing

Communications fault condition

Flashing

Press SCAN to pause scanning

Steady

Press SCAN to resume scanning

Flashing

Stop scan on alarm

Flashing

Analog output in manual control mode

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

PD2-6081

LED

State

Indication

1-4

Steady

Alarm condition based on set and reset points, independent of relay status in certain configurations. (Available on all meter configurations, including those without relays installed)

1-4

Flashing

Relay interlock switch open

1-4 & M

Flashing

Relay in manual control mode

Steady

Eighths of an inch

Steady

Sixteenths of an inch

Flashing

Communications fault condition

Flashing

Press SCAN to pause scanning

Steady

Press SCAN to resume scanning

Flashing

Stop scan on alarm

Flashing

Analog output in manual control mode

Symbol

Description

Feet value

Inches value

- -

Designation separators

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Programming Buttons

Button

Description

Button

Description

Next Up Arrow/F2

Previous Right Arrow/F1

Scan Acknowledge (Enter)/F3

• Press the Menu button to enter or exit the Programming Mode at any time.

• Press the Right arrow button to move to the next digit during digit or decimal point programming.

• Press the Up arrow button to scroll through the menus, decimal point, or to increment a digit.

• Press the Enter button to access a menu or to accept a setting.

• Press and hold the Menu button for three seconds to access the advanced features of the scanner.

• Press the SCAN/Enter button once to pause scanning (Pause LED flashes), then press the SCAN/Enter button

again to resume scanning (Play LED turns on).

• Press NEXT to go to the next PV; auto scan resumes after 10 seconds of inactivity.

• Press PREV to go to the previous PV; auto scan resumes after 10 seconds of inactivity.

Remote Buttons

The meter can be operated via a remote control station (PDA2364-MRUE) using the digital input connections. The PDA2364-MRUE mimics the Helios’s four programming buttons: Menu, Right Arrow, Up Arrow, and Enter.

See Remote Operation of Scanner on page 22 for details.

Lower Door Panel

1 2 3 4 5 6 7 8

P+/P-

24V 10V 5V

M-LINK

USB

MENU RIGHT UP ACK

POWER

SCAN

Ch-A

P- F4P+ COM V+

3412 5

mA+ COM V+ mA+

7869

Ch-B

SIGNAL

RI-I+ NONC

NONCCNONCC NONCC

MA OUT

21 3

43 6521

RELAY4RELAY3

43 6521

RELAY2RELAY1

RS-485

DIGITAL I/O

PWR TX RX

DI DI

DO DO

O1 O2 O3 O4 G

I1 I2 I3 I4 +5

__ __

RIGHT

ACK

SCAN

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Display Functions & Messages

The following table shows the main menu functions and messages in the order they appear in the menu.

Display Functions & Messages

Display

Parameter

Action/Setting Description

nmode

Mode

Enter Mode menu

nmaster

Master

Enter Master Mode

PV.nbr

PV Number

Select PV

PV 1

Select PV 1-16

enable

Enable

Enable PV

disabl

Disable

Disable PV

SlaV.Id

Slave ID

Enter the unique Slave ID for each PV

FunCod

Function Code

Enter the Function Code for each PV

Fun 03

Function Code 03

Use Function Code 03 to read slave device

Fun 04

Function Code 04

Use Function Code 04 to read slave device

Fun 65

Function Code 65

Use Function Code 65 to read slave device

Reg.nbr

Enter the Register Number for each PV

5 dig 6 dig

Select either 5 (x0001x9999) or 6 (x00001x65536) digits

data

Data Type

Enter the Data Type for each PV

float

Floating Point Data Type

Floating Point Data Type. Select Floating Point as the data type to be read from the slave device.

short

Short Integer Data Type

Short Integer Data Type. Select Short Integer as the data type to be read from the slave device.

long

Long Integer Data Type

Long Integer Data Type. Select Long Integer as the data type to be read from the slave device.

binary

Binary

Binary Data format. Select Binary format for Short or Long integers.

bcd

BCD

BCD Data format. Select BCD format for Short or Long integers.

signed

Signed

Signed Data. Select Signed Binary format for Short or Long integers.

unsigd

Unsigned

Unsigned Data. Select Unsigned Binary format for Short or Long integers.

1234

Byte Order

Select big-endian byte order.

4321

Byte Order

Select little-endian byte order.

2143

Byte Order

Select byte-swapped big-endian byte order. Not available for Short integer.

Display Functions & Messages

Display

Parameter

Action/Setting Description

3412

Byte Order

Select byte-swapped little-endian byte order. Not available for Short integer.

t-poll

Polling Time

Enter Polling Time (the time between read commands). In other words, how often the display is updated in Master mode.

t-resp

Response Time

Enter the time allowed for a slave device to respond to a command.

snooper

Snooper

Enter Snooper Mode

Pv.nbr

PV Number

Select PV

PV 1

Select PV 1-16

enable

Enable

Enable PV

disabl

Disable

Disable PV

Slav.Id

Slave ID

Enter the unique Slave ID of the device to be polled by Master

FunCod

Function Code

Enter the Function Code for each PV

Fun 03

Function Code 03

Use Function Code 03 to read slave device

Fun 04

Function Code 04

Use Function Code 04 to read slave device

Fun 65

Function Code 65

Use Function Code 65 to read slave device

Reg.nbr

Enter the Register Number for each PV

5 dig 6 dig

Select either 5 (x0001x9999) or 6 (x00001x65536) digits

data

Data Type

Enter the Data Type for each PV

float

Floating Point Data Type

Floating Point Data Type. Select Floating Point as the data type to be read from the slave device.

short

Short Integer Data Type

Short Integer Data Type. Select Short Integer as the data type to be read from the slave device.

long

Long Integer Data Type

Long Integer Data Type. Select Long Integer as the data type to be read from the slave device.

binary

Binary

Binary Data. Select Binary format for Short or Long integers.

bcd

BCD

BCD Data. Select BCD format for Short or Long integers.

signed

Signed

Signed Data. Select Signed Binary format for Short or Long integers.

unsigd

Unsigned

Unsigned Data. Select Unsigned Binary format for Short or Long integers.

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Display Functions & Messages

Display

Parameter

Action/Setting Description

1234

Byte Order

Select big-endian byte order.

4321

Byte Order

Select little-endian byte order.

2143

Byte Order

Select byte-swapped big-endian byte order. Not available for Short.

3412

Byte Order

Select byte-swapped little-endian byte order. Not available for Short.

t-resp

Response Time

Enter the time allowed for a slave device to respond to a command.

slaVe

Slave

Enter Slave Mode

data

Data Type

Enter the Data Type for each PV

float

Floating Point Data Type

Floating Point Data Type. Select Floating Point as the data type to be read from the slave device.

short

Short Integer Data Type

Short Integer Data Type. Select Short Integer as the data type to be read from the slave device.

long

Long Integer Data Type

Long Integer Data Type. Select Long Integer as the data type to be read from the slave device.

binary

Binary

Binary Data. Select Binary format for Short or Long integers.

bcd

BCD

BCD Data. Select BCD format for Short or Long integers.

signed

Signed

Signed Data. Select Signed Binary format for Short or Long integers.

unsigd

Unsigned

Unsigned Data. Select Unsigned Binary format for Short or Long integers.

1234

Byte Order

Select big-endian byte order.

4321

Byte Order

Select little-endian byte order.

2143

Byte Order

Select byte-swapped big-endian byte order. Not available for Short integer.

3412

Byte Order

Select byte-swapped little-endian byte order. Not available for Short integer.

t-resp

Response Time

Enter the time allowed for a slave device to respond to a command.

setup

Setup

Enter Setup menu

Process Variable

Enter PV Setup menu

PV 1

Select PV 1-16

tag

Tag

units

Units

Display Functions & Messages

Display

Parameter

Action/Setting Description

fornmt

Format

Format (Decimal, Eighths, or Sixteenths of an Inch)

dec

Decimal

Decimal Format

Ft In 8

Eighths

Eighth Inch Format

Ft In 16

Sixteenths

Sixteenth Inch Format

Dec.Pt

Decimal Point

Decimal Point menu

Disp.dp

Display Decimal Point

Set the decimal point position for the display. This is independent from float decimal point.

flot.dp

Floating Decimal Point

Floating Decimal Point. Select the decimal point for the expected floating point data.

SCale

Scale PV

Inp 1

Input 1

Scale input 1 signal or program input 1 value

Dis 1

Display 1

Program display 1 value

Inp 2

Input 2

Scale input 2 signal or program input 2 value (up to 32 points)

Dis 2

Display 2

Program display 2 value (up to 32 points)

dsplay

Display

Enter Display Setup menu

Line 1

Display Line 1

Top Display

D pV

Display PV

Display PVs 1-16

D Ch-C

Display C Channel

Display Math Channels C1-C4

PV.unit

Display PV & Units

Tg.pVn

Display Tag, PV Number

Display Tag & PV Number selected

Tg.pVn.u

Display Tag, PV# & Units

Display Tag, PV Number selected, & Units

C.unit

Display C & Units

Display C1-C4 & Units

Tg. C. u

Display Tag, C, & Units

Display Tag, C1-C4 & Units

Dset 1

Display Set Points 1-4

Hi-pV

Display Max PV 1-16

Display Maximum value for each enabled PV116

Lo-pV

Display Min PV 1-16

Display Minimum value for each enabled PV116

Hi-C

Display Max Ch C1-C4

Display Maximum for math channels C1-C4

Lo-C

Display Min Ch C1-C4

Display Minimum for math channels C1-C4

Line 2

Display Line 2

Bottom Display

D tag

Display Tag

D tag.u

Display Tag & Units

D off

Display off

Display Off

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Display Functions & Messages

Display

Parameter

Action/Setting Description

d-Inty

Display Intensity

relay

Relay Setup

Enter Relay Setup menu

assign

Assign Relay

Assign Relay menu

Relay 1

Relay 1-4

Assign Relay 1-4

PV 1

PV 1-16

Map Relay to PV 1-16

nm-pV

Multiple PVs

Map Relay to Multiple PVs

Rly 1

Relay 1-4

act 1

Relay Action 1-4

Assign Relay Action for relays 1-4

Auto

Automatic

Set relay for automatic reset

A-nman

Automanual

Set relay for auto or manual reset any time

LatCH

Latching

Set relay for latching operation

Lt-CLr

Latchingcleared

Set relay for latching operation with manual reset only after alarm condition has cleared

Altern

Alternate

Set relay for pump alternation control

SAnmpl

Sample

Set relay for sample time trigger control

Off

Turn relay off

FaiLSF

Fail-safe

Enter Fail-safe menu

FLS 1

Fail-safe 1

Set relay 1-4 fail-safe operation

Enable fail-safe operation

off

Off

Disable fail-safe operation

DeLAY

Delay

Enter relay Time Delay menu

DLY 1*

Delay 1*

*Enter relay 1-4 time delay setup

On 1

Set relay 1 On time delay

OFF 1

Off 1

Set relay 1 Off time delay

break

Break

Set relay condition if communication break detected

No act

No action

Ignore break condition. No change in relay state when Communications Break detected.

Relay goes to alarm condition when break detected. Relay turns on when Communications Break detected.

Off

Relay goes to non-alarm condition when break detected. Relay turns off when Communications Break detected.

Display Functions & Messages

Display

Parameter

Action/Setting Description

Aout

Analog output

Enter the Analog Output scaling menu

AOut 1*

Aout channel

Analog Output source channel

Dis 1

Display 1

Program the first Display value for the Analog Output.

Out 1

Output 1

Program the first Output value that corresponds to the Display 1 value for the Analog Output. (e.g. 4.000 mA).

Dis 2

Display 2

Program the second Display value for the Analog Output.

Out 2

Output 2

Program the second Output value that corresponds to the Display 2 value for the Analog Output. (e.g.

4.000 mA). (e.g. 20.000 mA)

serial

Serial

Enter Serial menu

SCan.ID

Scan ID

Enter Scan ID of the meter being polled (1-247)

baud

Baud Rate

Select Baud Rate (Choices: 300/600/1200/2400/480 0/9600/19,200)

(Must match that of other devices)

Tr dly

Transmit Delay

Enter Transmit Delay

(Master’s delay must be

greater than Snooper or slave devices)

parity

Parity

Select Parity (Even, Odd, None 1-Stop, or None 2-Stop)

(Must match that of other devices)

t-byt

Byte-to-byte Timeout

Enter the timeout value allowed between received bytes.

(This is used to fix communication problems with slow devices).

pass

Password

Enter the Password menu

Pass 1

Password 1

Set or enter Password 1

Pass 2

Password 2

Set or enter Password 2

Pass 3

Password 3

Set or enter Password 3

unloc

Unlocked

Program password to lock scanner

locd

Locked

Enter password to unlock scanner

999999

-99999

Flashing

Over/under range condition

Page 29

Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Menu Navigation Tip

• The Up arrow scrolls through the sub-menus within a menu, after the last item it returns to the top menu. Press Enter to step into the menu again or press Up arrow to move to the next menu. Note: There are some exceptions (e.g. PV Enable - - Data type ▲ Next PV).

• Press Menu to exit programming at any time.

Setting Numeric Values

The numeric values are set using the Right and Up arrow buttons. Press the Right arrow to select the

next digit and the Up arrow to increment the digit’s

value. The digit being changed is displayed brighter than the rest. Press and hold the Up arrow to autoincrement the display value. Press the Enter button, at any time, to accept a setting or the Menu button to exit without saving changes.

Main Menu

The main menu consists of the most commonly used functions: Mode, Setup, Serial, and Password.

• Press Menu button to enter Scanner Programming

• Press Up arrow button to scroll through the menus

• Press Menu, at any time, to exit and return to Run Mode

• Changes to the settings are saved to memory only after pressing Enter

• The display moves to the next menu every time a setting is accepted by pressing Enter

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Serial Communications (serial)

The scanner is equipped with RS-485 Modbus RTU serial communications.

The Serial menu is used for programming the Scanner ID, Baud Rate, Transmit Delay, Parity, and Byte-to-Byte Timeout parameters.

The scanner may be connected to a PC for initial configuration via the on-board USB connection. For ongoing digital communications with a computer or other data terminal equipment, use the RS-485 connection with the appropriate serial converter; see Ordering Information on page 6 for details.

• DO NOT connect any equipment to the RJ45 M-LINK connector. Otherwise damage will occur to the equipment and the meter.

• DO NOT disconnect the RJ45 connector located to the left of the power terminal block. Doing so will disable the on-board digital I/O, and the RS-485 serial communications.

When using more than one scanner in a multi-drop mode, each scanner must be provided with its own unique address. The scanner address (Scan ID) may be programmed between 1 and 247.

The transmit delay may be set between 0 and 4999 ms; this value must be less than (Poll Time/# of PVs).

The parity can be set to even, odd, or none with 1 or 2 stop bits.

When setting up the scanner to run on a Modbus system, the devices must be programmed with matching Baud Rate and Parity. Failure to match up the network devices’ parameters may result in communication breaks.

Notes:

1. The byte-to-byte timeout setting may be adjusted to fix communication errors with slow devices.

2. The Transmit Delay of the Master must be greater than the Snooper or the slave devices being polled.

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Scanner Mode Selection

Operating Modes (nmode)

The Mode menu is used to select how the scanner is to function:

1. Master: Reads a slave device, scales the data from it, displays the result, and operates the relays and 4-20 mA output. The Master polls from 1 to 16 process variables from 1 to 16 slave devices. The Master processes and displays PV1 through PV16 and alternately displays the variables being polled.

2. Snooper: Listens to the Modbus traffic and picks up a specific register or registers being polled by a Master device from a specific slave device and processes the data being read.

3. Slave: Read and controlled by a master device (PLC, DCS, etc). The data sent to it by the master is scaled, displayed, and used to operate the relays and 4-20 mA output.

The Master mode requires additional parameter selection to specify how the slave device is to be read and how to interpret the data.

Press Menu to enter Scanner Programming. Press the Enter button to access any menu or press Up arrow button to scroll through choices. Press the Menu button to exit at any time and return to Run mode.

How to Enable Process Variables (PVs)

In Master or Snooper Mode, navigate to the PV Number menu and press ENTER. From there, the

user can scroll through all of the sixteen available PVs. In order to enable a specific PV, simply press ENTER to access the desired PV, then scroll to ENABLE and press ENTER (Follow the same course of action for disabling PVs).

Enter the Slave ID of the device being polled by the Master, followed by the Function Code, Register Number, Data Type, and Byte Order. Analog input channels must be assigned a Slave ID corresponding to the input to be read as indicated here:

• Ch A = 256 (mA) or 257 (V)

• Ch B = 258 (mA) or 259 (V)

Once the desired PVs are enabled, navigate to the Setup menu and enter the PV Setup in order to select the PV tag, units, format, and decimal point parameters, as well as to scale the PVs.

Once the user has scaled the final PV, the scanner automatically goes to the Display Setup menu to access line 1 and 2 display assignments.

By default, display line 1 is assigned to Display PV (d pV) and line 2 to display the Tag (d tag) for the corresponding PV.

It is possible to display PVs & Tags on line 1 and 2 simultaneously by selecting Tag & PV Number (tag.pVn). Display line 1 is setup by default to display PV & tag for PV1, 3, 5, 7; while line 2 is setup by default to display PV & tag 2, 4, 6, 8. These can be changed by the user to display any or all PVs. Program either display line 1 or 2 to show the desired parameters and press ENTER. See Setting Up the Displays (dsplay setup) on page 38 for details.

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Master Mode (nmastr)

The Master mode contains the PV Number, Poll Time, and Response Timeout menus. PV Number: Enable/disable PVs, select slave ID, function code, register number, data type & byte order. Poll Time: Enter the time interval to poll the slave devices selected. Response timeout: Enter the time interval to wait after three polls before reporting it as a Communications Break.

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Snooper Mode (Snoopr)

The Snooper mode is used to listen to data being transmitted on the bus. Multiple Snoopers can be connected to the RS-485 bus and display any process variable. The same process variable can be displayed in multiple locations. Use the menu below to configure Snooper Mode parameters.

Notes:

1. To minimize the possibility of communication errors and communication break conditions, use a poll time of 5 seconds or more with slow baud rates (e.g. 4800 bps or less).

2. The response time for scanners set up for Snooper mode must be greater than the Master’s poll time. This setting corresponds to the time window during which the Snooper listens to the bus for a reply by the slave device being polled by the master device. As soon as the Snooper detects a new reply on the bus, the display is updated. If there is no reply within the response time setting, the Snooper goes into communications break condition.

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

How to Select 5 or 6-Digit Registers

In Master or Snooper Mode, it is possible to select either a five-digit or a six-digit Register Number. Once the operator has enabled a PV, entered a Slave ID, and chosen a Function Code, the scanner will arrive at the Register Number menu (reg.nbr). Press the Right arrow to display the number of digits being used and then the Up arrow to change the setting for the number of digits to be used for that register (5 dig or 6 dig), then press ENTER.

Notes:

1. If Function Code 03 is selected, the Register

Number defaults to 40001; if Function Code 04 is selected, the Register Number defaults to 30001.

2. Default Data Type is Float

3. Default Slave ID for PV1=001, for PV2=002,

for PV3=003, etc.

The Master ignores the decimal point setting for slave devices that specify a Short or Long integer. For example, a slave that is displaying 12.34 is read as 1,234. Floating point data may or may not utilize the

decimal point. Refer to the slave’s operating manual

to make sure. The Register Number range is based on the Function

Code and the number of digits selected. See the following table:

Function Code

5 Digit

6 Digit

40001 – 49999

400001 – 465536

30001 – 39999

300001 – 365536

65001-65999

N/A

Slave Mode (SlaVe)

The Slave mode is capable of accepting Short, Long, and Float data types. Refer to the Modbus Register Tables at www.predig.com for details of all the predefined parameters. Follow the menu below to navigate and set all parameters for Slave Mode.

Page 35

Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Setting Up the Scanner (setup)

The Setup menu is used to select:

1. PV Setup

a. PV Tags b. PV Units c. Format: Decimal point or Feet & Inches d. Decimal Point e. Scale input data

2. Display assignment & Intensity

3. Relay assignment and operation

4. 4-20 mA analog output scaling

Press the Menu button to exit at any time.

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Setting Up the Process Variables (PVs) (pV setup)

Enter the PV Setup menu to set up all the criteria associated with each enabled PV. Once you have selected the desired PV, you can select parameters for each. These include tag, units, format, display decimal point, float decimal point (resolution), and scaling of the input data.

Note: PV1 and PV2 can have multiple points for linearization. Only two points are available for all other PVs and for either the Square Root or Programmable Exponent functions.

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Setting the Display Decimal Point (disp.dp)

Decimal point may be set one to five decimal places or with no decimal point at all. Pressing the Up arrow moves the decimal point one place to the right until no decimal point is displayed, and then it moves to the leftmost position. The decimal point is programmable only for the Display Value.

Setting the Float Decimal Point (Flot..dp)

If floating point data type is selected, select the number of decimals to correspond to the expected floating point data; the numbers to right of the LSD will be ignored by the scanner.

Example:

If you have a number such as 12.3456, you have to tell the scanner how many digits to the right are of interest to you. In this case selecting 4 places will make use of all the digits. For most applications the display decimal point will be set accordingly (i.e. 4 places).

If 2 decimal places are selected, the number 12.3456 is displayed as 12.35; notice that the number is rounded up.

Scaling the PV Display Values (sCale)

The data that the scanner receives can be scaled to display in engineering units. Input 1 must be less than Input 2, Input 2 must be less than Input 3, etc. (known as monotonic values). Press Enter to save the changes or Menu to exit without saving. When the Linear function is selected for PV1 & PV2, up to 32 points may be programmed to handle non-linear data. Only two points are available for all other PVs and for either the Square Root or Programmable Exponent functions. Round Horizontal Tanks are scaled using the length and diameter of the tank.

Scale Menu

The display will show Error if the scaling or calibration process is unsuccessful. Undesired operation may occur if the error is not corrected. Correct the error by either changing one of the inputs in question or changing the number of points to exclude an erroneous input point.

Notes:

1. For Feet & Inches Display format, the display values will be in the format 99 FT 11 IN 15

/16th

or 8th. Make the left digit for inches and 16th blank if the value is less than 10. Example: 50 Feet, 9 Inches, and 8/16 will be displayed as 50 FT _9 IN _8

16th

instead of 50 FT 09 IN 08

/16th

2. Scaling Short and Long input values (input 1, input 2, etc.) should be done without the decimal point.

Multi-Point Linearization (Linear)

The scanner is set up at the factory for 2-point linear scaling. Up to 32 linearization points may be selected for PV1 and PV2. All other PVs have two linearization points available. See Linear Function Menu (Linear) on page 59 for details.

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Setting Up the Displays (dsplay setup)

Display Line 1 Parameters (Line 1 dsplay)

The top display (line 1) can be programmed to display any of the following:

Display

Parameter

Setting Description

D pV

Display PV

Display PVs 1-16

D Ch-C

Display C Channel

Display Math Channels C1-C4

PV.unit

Display PV & Units

Tg.pVn

Display Tag, PV Number

Display Tag & PV Number selected

Tg.pVn.u

Display Tag, PV# & Units

Display Tag, PV Number selected, & Units

C.unit

Display C & Units

Display C1-C4 & Units

Tg. C. u

Display Tag, C, & Units

Display Tag, C1-C4 & Units

Dset 1

Display Set Points 1-4

Hi-pV

Display Max PV 1-16

Display Maximum value for each enabled PV1-16

Lo-pV

Display Min PV 1-16

Display Minimum value for each enabled PV1-16

Hi-C

Display Max Ch C1-C4

Display Maximum for math channels C1-C4

Lo-C

Display Min Ch C1-C4

Display Minimum for math channels C1-C4

Display Line 2 Parameters (Line 2 dsplay)

The bottom display (line 2) can be programmed to display any of the following:

Display

Parameter

Setting Description

D pV

Display PV

Display PVs 1-16

D Ch-C

Display C Channel

Display Math Channels C1-C4

PV.unit

Display PV & Units

Tg.pVn

Display Tag, PV Number

Display Tag & PV Number selected

Tg.pVn.u

Display Tag, PV# & Units

Display Tag, PV Number selected, & Units

C.unit

Display C & Units

Display C1-C4 & Units

Tg. C. u

Display Tag, C, & Units

Display Tag, C1-C4 & Units

Dset 1

Display Set Points 1-4

Hi-pV

Display Max PV 1-16

Display Maximum value for each enabled PV1-16

Lo-pV

Display Min PV 1-16

Display Minimum value for each enabled PV1-16

Hi-C

Display Max Ch C1-C4

Display Maximum for math channels C1-C4

Lo-C

Display Min Ch C1-C4

Display Minimum for math channels C1-C4

D tag

Display Tag

Display Tag (Line 2 only)

D tag.u

Display Tag & Units

Display Tag & Units (Line 2 only)

D off

Display off

Display Off (Line 2 only)

Note: Toggling displays use the Scan Time for the value and 2 seconds for Tag and Units.

Display Intensity (d-IntY)

The scanner has eight display intensity levels to give the best performance under various lighting conditions. Select intensity 8 for outdoor applications. The default intensity setting is 6.

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Display Line 1 Menu (Line 1 dsplay)

Note: For Tag-PVn and Tag-PVn-U, the default settings for PVs are 1,3,5, & 7, followed by two underscores, which

represent empty PVs. These all can be changed to any enabled PVs.

Page 40

Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Display Line 2 Menu (Line 2 dsplay)

Note: For Tag-PVn and Tag-PVn-U, the default settings for PVs are 2,4,6,& 8, followed by two underscores, which

represent empty PVs. These all can be changed to any enabled PVs.

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Setting the Tags (tAg) & Units (units)

Each PV can be setup with its own tag and units. See the flow charts on the previous pages to access the display menu to show the tag or toggling tag & units. The engineering units and custom tags can be set using the following 7-segment character set:

Display

Character

Display

Character

o o 6

p P 7

s S A

v V c

z Z g

- - 9

[

]

] [ I

= = I

Degree(<)

Space

Notes:

1. Degree symbol represented by (<) if programming with ScanView.

2. The letters “m” and “w” use two 7-segment LEDs each; when selected the characters to the right are shifted one position.

3. Press and hold up arrow to auto-scroll the characters in the display.

Application Example 1

In this application we have a system consisting of (4) multivariable tank level gauges connected to (2) PD2-6080 Mobus scanners displaying Product Level, Interface Level, and Average Temperature.

One of the Modbus Scanners is located next to the tanks and the other is located in the control room.

Register Numbers & Process Variables

30001 - Product Level 30003 - Interface Level 30017 - Average Temperature The following table shows the system setup for a

typical multivariable level gauge, one PD2-6080 Master, and one PD2-6080 Snooper:

Parameter

PD2-6080 Master

PD2-6080 Snooper

Description/ Comment

Mode

Master

Snooper

PV1 Slave ID

Function Code

30001

Tank 1 Product Level

Data Type

Long integer Binary, Signed

Long

Byte Order

1234

PV2 Slave ID

Function Code

30003

Tank 1 Interface

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Parameter

PD2-6080 Master

PD2-6080 Snooper

Description/ Comment

Data Type

Long integer Binary, Signed

Long

Byte Order

1234

PV3 Slave ID

Function Code

30017

Tank 1 Average Temperature

Data Type

Long integer Binary, Signed

Long

Byte Order

1234

PV4 Slave ID

Function Code

30001

Tank 2 Product Level

Data Type

Long integer Binary, Signed

Long

Byte Order

1234

PV5 Slave ID

2 2

Function Code

30003

Tank 2 Interface

Data Type

Long integer Binary, Signed

Long

Byte Order

1234

PV6 Slave ID

Function Code

30017

Tank 2 Average Temperature

Data Type

Long integer Binary, Signed

Long

Byte Order

1234

PV7 Slave ID

Function Code

Parameter

PD2-6080 Master

PD2-6080 Snooper

Description/ Comment

30001

Tank 3 Product Level

Data Type

Long integer Binary, Signed

Long

Byte Order

1234

PV8 Slave ID

Function Code

30003

Tank 3 Interface

Data Type

Long integer Binary, Signed

Long

Byte Order

1234

PV9 Slave ID

Function Code

30017

Tank 3 Average Temperature

Data Type

Long integer Binary, Signed

Long

Byte Order

1234

PV10 Slave ID

Function Code

30001

Tank 4 Product Level

Data Type

Long integer Binary, Signed

Long

Byte Order

1234

PV11 Slave ID

4 4

Function Code

04 Register PV11

30003

Tank 4 Interface

Data Type

Long integer Binary, Signed

Long

Byte Order

1234

PV12 Slave ID

Page 43

Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Parameter

PD2-6080 Master

PD2-6080 Snooper

Description/ Comment

Function Code

30017

Tank 4 Average Temperature

Data Type

Long integer Binary, Signed

Long

Byte Order

1234

Scanner ID

246

245

Polling Time

5.0 sec

N/A

Slave Response Timeout

10.0 sec

10.0 sec Baud

4800

Parity

None 1

1 stop bit

Byte-toByte Timeout

0.01 sec

0.01 sec Decimal point

3 places

Input 1

000000 000000

Scaling for Level & Interface

Display 1

000000

Input 2

999999

0.001 inch resolution

Display 2

83.333

Feet

Application Example 2

In this application we have a system consisting of (4) multivariable tank level gauges connected to (2) PD2-6081s displaying Product Level, Interface Level, and Average Temperature.

One of the Modbus Scanners is located next to the tanks and the other is located in the control room. The display readout is shown in sixteenths of an inch.

Register Numbers & Process Variables

30001 - Product Level 30003 - Interface Level 30017 - Average Temperature

Note: The example above shows the PD2-6081. The setup of the scanner is the same as the first example. The PD2-6081’s Feet & Inches display is clearly visible.

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Setting the Relay Operation (relay)

This menu is used to set up the assignment and operation of the relays.

Relay Setup Menu (relay setup)

• During setup, the relays do not follow the input and

they will remain in the state found prior to entering the Relay menu.

1. Assign Relay assignment

a. Assign relay to PV b. Assign relay to Math channel c. Assign relay to multiple PVs

(2 to 16 PVs)

2. Act 1 Relay action

a. Automatic reset only (non-latching) b. Automatic + manual reset at any time

(non-latching) c. Latching (manual reset only) d. Latching with Clear (manual reset only

after alarm condition has cleared) e. Pump alternation control (automatic

reset only) f. Sampling (the relay is activated for a

user-specified time) g. Off (relay state controlled by Interlock

feature)

3. Set 1 Set point & Rst 1 Reset point

4. Failsf Fail-safe operation a. On (enabled) b. Off (disabled)

5. Delay Time delay a. On delay (0-999.9 seconds) b. Off delay (0-999.9 seconds)

6. Break Relay action for communications break or loss of 4-20 mA input

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Setting the Relay Action (act 1)

Operation of the relays is programmed in the Action menu. The relays may be set up for any of the following modes of operation:

1. Automatic reset (non-latching)

2. Automatic + manual reset at any time (nonlatching)

3. Latching (manual reset only, at any time)

4. Latching with Clear (manual reset only after alarm condition has cleared)

5. Pump alternation control (automatic reset only)

6. Sampling (the relay is activated for a userspecified time)

7. Off (relay state controlled by Interlock feature)

The following graphic shows relay 1 action setup; relay 2-4 are set up in a similar fashion.

Programming Set and Reset Points

High alarm indication: program set point above reset point. Low alarm indication: program set point below reset point. The deadband is defined as the difference between set and reset points. Minimum deadband is one display count. If the set and reset points are programmed with the same value, the relay will reset one count below the set point.

Note: Changes are not saved until the reset point has been accepted.

Setting Fail-Safe Operation (failsf)

In fail-safe mode of operation, the relay coil is energized when the process variable is within safe limits and the relay coil is de-energized when the alarm condition exists. The fail-safe operation is set independently for each relay. Select on to enable or select off to disable fail-safe operation.

Programming Time Delay (delay)

The On and Off time delays may be programmed for each relay between 0 and 999.9 seconds. The relays will transfer only after the condition has been maintained for the corresponding time delay.

The On time delay is associated with the set point. The Off time delay is associated with the reset point.

Relay Action for Communications Break (break)

The Scanner will poll the slave device three times before reporting a communications break condition. After the third failure, the Response Timeout timer starts and will determine the actual time to report a PV in break condition.

1. Turn On (Go to alarm condition)

2. Turn Off (Go to non-alarm condition)

3. No Action (The relays will maintain the last condition)

Refer to Relay Operation After Communications Break on page 48 for details.

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Relay Action for Loss of 4-20 mA Input (Loop Break)

The loop break feature is associated with the 4-20 mA input. Each relay may be programmed to go to one of the above conditions when the scanner detects the loss of the input signal (i.e. < 0.005 mA).

Notes:

1. This is not dependent on the Communications Break or Response Timeout setting.

2. This is not a true loop break condition; if the signal drops below 0.005 mA, it is interpreted as a “loop break” condition.

The following graph shows the loop break relay operation for a high alarm relay.

When the scanner detects a break in the 4-20 mA loop, the relay will go to one of the following selected actions:

1. Turn On (Go to alarm condition)

2. Turn Off (Go to non-alarm condition)

3. Ignore (Processed as a low signal condition) Note: Select no Action

Time Delay Operation

The following graphs show the operation of the time delay function.

When the signal crosses the set point, the On time delay timer starts and the relay trips when the time delay has elapsed. If the signal drops below the set point (high alarm) before the time delay has elapsed, the On time delay timer resets and the relay does not change state. The same principle applies to the Off time delay.

Note: If “Automatic or Manual (A-nmAn)” reset mode is selected, the LED follows the reset point and not the relay state when the relay is acknowledged.

Relay Sampling Operation

When the signal crosses the set point, the relay trips and the sample time starts. After the sample time has elapsed, the relay resets. The cycle repeats every time the set point is crossed, going up for high alarms and going down for low alarms.

The sample time can be programmed between 0.1 and 5999.9 seconds.

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Relay and Alarm Operation Diagrams

The following graphs illustrate the operation of the relays, status LEDs, and ACK button.

High Alarm Operation (Set > Reset)

For Manual reset mode, ACK can be pressed anytime to turn "off" relay. To detect a new alarm condition, the signal must go below the set point, and then go above it.

Low Alarm Operation (Set < Reset)

For Manual reset mode, ACK can be pressed anytime to turn "off" relay. For relay to turn back “on”, signal must go above set point and then go below it.

High Alarm with Fail-Safe Operation (Set > Reset)

Note: Relay coil is energized in non-alarm condition. In case of power failure, relay will go to alarm state.

Low Alarm with Fail-Safe Operation (Set < Reset)

Note: Relay coil is energized in non-alarm condition. In case of power failure, relay will go to alarm state.

Page 48

Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Pump Alternation Control Operation

Relay Operation After Communications Break

When a Master scanner fails to receive a reply from the slave it is called a Communications Break. The relays can be programmed to react to this event by going On, Off, or No Action. After communication is restored the relays are turned off or on, based on their operating mode and their set and reset points, without regard to their prior state. This is similar to the auto initialization on power up. Below is a diagram showing three examples.

The same is true for a scanner set up to operate in Snooper mode.

Relay 1

Manual mode

Relay 2

Manual mode

Input

de-energized

energized

Relay 3

Auto mode

Relay 1 Set

Relay 1 to 3

Reset

Relay 2 Set

Relay 3 Set

Communications

Break

Communications Restored

No Serial

Communications

Break: No Action

Communications

Break: Relay "on"

Communications

Break: Relay "on"

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Relay Operation Details

Overview

The four-relays option for the scanners expand their usefulness beyond simple indication to provide users with alarm and control functions. Typical applications include high and low temperature, level, pressure or flow alarms, control applications such as simple on/off pump control, and pump alternation control for up to 4 pumps. There are four basic ways the relays can be used:

1. High and Low Alarms with Latching or NonLatching Relays

2. Simple On/Off Control with 100% Adjustable Deadband

3. Sampling (Based on Time)

4. Pump Alternation Control for up to 4 Pumps

Relays Auto Initialization

When power is applied to the scanner, the front panel LEDs and alarm relays will reflect the state of the input to the scanner after the first response from the slave device. The following table indicates how the alarm LEDs and relays will react on power-up based on the set and reset points:

Fail-Safe Operation (failsf)

The following table indicates how the relays behave based on the fail-safe selection for each relay:

Fail-Safe Selection

Non-Alarm State

Alarm State

Power Failure

Off

Open

Closed

Open

Relays go to nonalarm state

Closed

Open

Closed

Relays go to alarm state

Note: NO = Normally Open, NC = Normally Closed.

This refers to the condition of the relay contacts when the power to the scanner is off.

Front Panel LEDs

The alarm status LEDs on the front panel are available on all scanners, even those without relays installed, and provide status indication for the following:

LED

Status

Alarm 1

Alarm 2

Alarm 3

Alarm 4

The scanner is supplied with four alarm points that include front panel LEDs to indicate alarm conditions. This standard feature is particularly useful for alarm applications that require visual-only indication. The LEDs are controlled by the set and reset points programmed by the user. When the display reaches a set point for a high or low alarm, the corresponding alarm LED will turn on. When the display returns to the reset point the LED will go off. The front panel LEDs respond differently for latching and non-latching relays.

For non-latching relays, the LED is always off during normal condition and always on during alarm condition, regardless of the state of the relay (e.g. Relay acknowledged after alarm condition).

For latching relays, the alarm LEDs reflect the status of the relays, regardless of the alarm condition. The following tables illustrate how the alarm LEDs function in relation to the relays and the acknowledge button (Default: F3 key assigned to ACK):

Latching and Non-Latching Relay Operation

The relays can be set up for latching (manual reset) or non-latching (automatic reset) operation.

Relay terminology for following tables

Terminology

Relay Condition

Alarm (Tripped)

Off

Normal (Reset)

Ack

Acknowledged

The On and Off terminology does not refer to the status of the relay’s coil, which depends on the failsafe mode selected.

• In latching relay mode, if Fail-Safe is off, latched relays will reset (unlatch) when power is cycled.

Alarm #

HI or LO Alarm

Set Point

Reset Point

PowerUp Reading

Relay & LED

1000

500

499

Off

700

900

499

250

400

499

Off

450

200

499

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Non-Latching Relay (Auto)

In this application, the scanner is set up for automatic reset (non-latching relay). Acknowledging the alarm while it is still present has no effect on either the LED or the relay. When the alarm finally goes away, the relay automatically resets and the LED also goes off.

Automatic reset only

Condition

LED

Relay

Normal

Off

Alarm

Ack (No effect)

Normal

Off

Non-Latching Relay with Manual Reset (A-nman)

In this application, the scanner is set up for automatic and manual reset at any time (non-latching relay). The LED and the relay automatically reset when the scanner returns to the normal condition.

In addition, the relay can be manually reset while the alarm condition still exists, but the LED will stay on until the scanner returns to the normal condition.

Automatic + manual reset at any time

Condition

LED

Relay

Normal

Off

Alarm

Normal

Off

Next Alarm

Ack

Off

Normal

Off

Latching Relay (LatcH)

In this application, the scanner is set up for manual reset at any time. Acknowledging the alarm even if the alarm condition is still present resets the relay and turns off the LED.

Manual reset any time

Condition

LED

Relay

Normal

Off

Alarm

Ack

Off

Latching Relay with Clear (Lt-Clr)

In this application, the scanner is set up for manual reset only after the signal passes the reset point (alarm condition has cleared). Acknowledging the alarm while it is still present has no effect on either the LED or the relay. When the alarm is acknowledged after it returns to the normal state, the LED and the relay go off. Notice that the LED remains on, even after the scanner returns to the normal condition. This is because, for latching relays, the alarm LED reflects the status of the relay, regardless of the alarm condition.

Manual reset only after

alarm condition has cleared

Condition

LED

Relay

Normal

Off

Alarm

Ack (No effect)

Normal

Ack

Off

Light / Horn / Button Accessories

Add visible and audible ways to indicate

alarm conditions on any Helios meter with

the MOD-PD2LH Light / Horn / Button

accessories. The light with built-in 85 dB

horn, and button come mounted and wired

to the Helios. Meter and accessories are ordered as separate items. See Ordering

Information on page 6.

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Acknowledging Relays

There are three ways to acknowledge relays programmed for manual reset:

1. Via the programmable front panel function keys F1-F3 (Example: F3 assigned to ACK).

2. Remotely via a normally open pushbutton wired to the F4 terminal.

3. Remotely via a normally open push button wired to one of the digital inputs and the +5 V terminal on the digital I/O connections.

When the ACK button or the assigned digital input is closed, all relays programmed for manual reset are acknowledged.

Acknowledging Relays with Remote Control Station

Relays may be remotely acknowledged by connecting the PDA2361-A to either the F4 terminal or a digital input as described above.

Pump Alternation Control Applications (Altern)

For pump control applications where two or more similar pumps are used to control the level of a tank or a well, it is desirable to have all the pumps operate alternately. This prevents excessive wear and overheating of one pump over the lack of use of the other pumps.

Up to 4 relays can be set up to alternate every time an on/off pump cycle is completed. The set points and reset points can be programmed, so that the first pump on is the first pump off.

Application #1: Pump Alternation Using Relays 1 & 2

Set and Reset Point Programming

Relay

Set Point

Reset Point

Function

30.000

10.000

Controls pump #1

35.000

5.000

Controls pump #2

4.000

9.000

Controls low alarm

40.000

29.000

Controls high alarm

1. Relays 1 and 2 are set up for pump alternation.

2. Relays 3 and 4 are set up for low and high alarm indication.

Pump Alternation Operation

1. Pump #1 turns on when the level reaches

30.000, when level drops below 10.000 pump #1 turns off.

2. The next time the level reaches 30.000, pump #2 turns on, when the level drops below 10.000, pump #2 turns off.

3. If the level doesn’t reach 35.000 pump #1 and pump #2 will be operating alternately.

4. If pump #1 cannot keep the level below 35.000 pump #2 will turn on at 35.000, then as the level drops to 10.000 pump #1 turns off, pump #2 is still running and shuts off below 5.000.

5. Notice that with the set and reset points of pump #2 outside the range of pump #1, the first pump on is the first pump to go off. This is true for up to 4 alternating pumps, if setup accordingly.

6. Relay #3 will go into alarm if the level drops below 4.000 and relay #4 will go into alarm if the level exceeds 40.000.

MENU RIGHT UP ACK

ACK

MENU PREV

SCAN

P- F4P+ COM V+

3412 5

mA+ COM V+ mA+

7869

O1 O2 O3 O4 G

I1 I2 I3 I4+5

Ground

5 VDC

ACK

Page 52

Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Setting Up the Interlock Relay (Force On) Feature

Relays 1-4 can be set up as interlock relays. To set up the relays for the interlock feature:

1. Access the Setup – Relay – Action menu and set the action to off.

2. In the Advanced features – User menu, program

any of the digital inputs to Force On any of the internal relays (1-4).

3. Connect a switch or dry contact between the +5V

terminal and the corresponding digital input (dI-1 to dI-4) terminal.

Interlock Relay Operation Example

Relays 1 & 2 are configured to energize (their front panel LEDs are steady on) when SW1 & SW2 switches (above) are closed. If the contacts to these digital inputs are opened, the corresponding front panel LEDs flash, indicating this condition. The processes being controlled by the interlock relay will stop, and will re-start only after the interlock relay is re-activated by the digital inputs (switches).

Note: If multiple digital inputs are assigned to the same relay, then the corresponding logic is (AND) – i.e. both switches must be closed to trip the relay.

• If the digital inputs are assigned to the Interlock

Function, then they cannot be used to program

the meter remotely.

Scaling the 4-20 mA Analog Output (Aout)

The 4-20 mA analog output can be scaled to provide a 4-20 mA signal for any display range selected. The Analog Output can be mapped to PVs or Math Channels. To select the channel and source assignments the analog output are assigned to, see Analog Output Source Programming (aoutpr) on page 66.

No equipment is needed to scale the analog outputs; simply program the display values to the corresponding mA output signal.

The Analog Output menu is used to program the 4-20 mA output based on display values.

For further details, see Setting Numeric Values on

page 29, Analog Output Value for Loss of

4-20 mA Input (Loop Break) on page 66

Notes: Changes to the settings are saved to memory only after pressing ENTER. Changes made to settings prior to pressing ENTER are not saved. Once ENTER is pressed, the display moves to the next menu.

O1 O2 O3 O4 G

I1 I2 I3 I4+55 VDC

SW1

SW2

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Setting Up the Password (pass)

The Password menu is used for programming three levels of security to prevent unauthorized changes to the programmed parameter settings.

Protecting or Locking the Scanner

Enter the Password menu and program a six-digit password.

Making Changes to a Password Protected Scanner

If the scanner is password protected, the scanner will display the message Locd (Locked) when the Menu button is pressed. Press the Enter button while the message is being displayed and enter the correct password to gain access to the menu. After exiting the programming mode, the scanner returns to its password protected condition.

Disabling Password Protection

To disable the password protection, access the Password menu and enter the correct password twice, as shown below. The scanner is now unprotected until a new password is entered.

If the correct six-digit password is entered, the scanner displays the message unLoc (Unlocked) and the protection is disabled until a new password is programmed.

If the password entered is incorrect, the scanner displays the message Locd (Locked) for about two seconds, and then it returns to Run Mode. To try again, press Enter while the Locked message is displayed.

Did you forget the password?

The password may be disabled by entering a master password once. If you are authorized to make changes, enter the master password 508655 to unlock the scanner.

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Advanced Features Menu

To simplify the setup process, functions not needed for most applications are located in the Advanced Features menu:

1. Scan Mode: Auto or manual; Go on alarm or stop on alarm

2. Control relays and analog output

3. Noise Filter

4. Noise Filter Bypass

5. Rounding Feature

6. Select Math, Linearization function, Cutoff

7. User Programming for function keys and digital I/O

8. Analog Channels Input Calibration

9. System Information

Advanced Menu Navigation Tips

• Press and hold the Menu button for three seconds to access the Advanced Features Menu.

• Press the Up arrow button to scroll through the Advanced Features Menu.

• Press Menu at any time, to exit and return to Run mode.

• Changes made to settings prior to pressing Enter/Scan are not saved.

• Changes to the settings are saved to memory only after pressing Enter/Scan.

• The display automatically moves to the next menu every time a setting is accepted by pressing Enter/Scan.

Advanced Features Menu & Display Messages

Display

Parameter

Action/Setting

sCan

Scan

Enter Scan menu

nmode

Scan Mode

Select Auto or Manual Scan Mode

Auto

Automatic

Select Automatic Scan Mode

time

Scan Time

Select Scanning Time

nman

Manual

Select Manual Scan Mode

Alarnm

Alarm

Select Go or Stop Alarm

Select Alarm Go

Stop

Select Alarm Stop

Contrl

Manual Control

Enter Manual Control menu for relays and analog output 1

Auto

Automatic

Select Automatic Control of Outputs and Relays

nman

Manual

Select Manual Control of Outputs and Relays

Aout 1

Analog Output 1

Select Analog Output 1 for manual control

rly 1

Relay 1

Select Relay 1-4 for manual control

Select On for Relay 1-4

off

Off

Select Off for Relay 1-4

filter

Filter

Enter Filter menu

PV 1

PV 1 Filter

Program Filter Value for PV 1

PV 2

PV 2 Filter

Program Filter Value for PV 2

bypass

Filter Bypass

Enter Filter Bypass menu

PV 1

PV 1 Filter Bypass

Program Filter Bypass Value for PV 1

PV 2

PV 2 Filter Bypass

Program Filter Bypass Value for PV 2

round

Rounding Feature

Enter Rounding Feature menu

1 Rounding Value

Program Rounding Value for PV *(User-selectable & rounds to the nearest 1, 2, 5, 10, 20, 50, 100)

select

Select

Enter Select menu

functn

Function

Enter data Linearization Function menu

PV 1*

PV 1 Function

*Enter Linearization Function menu for all

enabled PVs

Ch C1*

Ch C1 Function

*Enter Linearization Function menu for all

enabled math channels

Linear

Enter Linear menu

No pts

Number of Points

Enter Number of Linearization Points

sCale

Scale

Scale Number of Linearization Points

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Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Advanced Features Menu & Display Messages

Display

Parameter

Action/Setting

Inp 1

Input 1

Scale input 1 signal or program input 1 value

Dis 1

Display 1

Program display 1 value

Inp 2

Input 2

Scale input 2 signal or program input 2 value (up to 32 points for PV1 & PV2)

Dis 2

Display 2

Program display 2 value (up to 32 points for PV1 & PV2)

square

Square Root

Enter Square Root menu

Prog e

Programmable Exponent

Enter Programmable Exponent menu

1.5000

Programmable Exponent Value

Enter the Programmable Exponent Value

rht

Round Horizontal Tank

Enter Round Horizontal Tank menu

Inch

Enter to calculate tank values in Inches

cnm

Centimeters

Enter to calculate tank values in Centimeters

dianmr

Diameter

Enter tank diameter

Length

Enter tank length

nmath

Math

Enter Math menu

Ch C1*

Channel C1

*Enter Math Channel C1-C4 menu

Opertn

Operation

Enter Math Operation menu

Const

Constant

Enter Math Constant menu

Adder

Enter Adder Value

FACtr

Factor

Enter Factor Value

sunm

Sum

Math Function Sum

dif

Difference

Math Function Difference

difabs

Absolute Difference

Math Function Absolute Difference

aVg

Average

Math Function Average

nmulti

Multiply

Math Function Multiply

diVide

Divide

Math Function Divide

Hi-pV

Max

Math Function

Maximum of all selected PVs

Lo-pV

Min

Math Function

Minimum of all selected PVs

drauw

Draw

Math Function Draw

uwaVg

Weighted Average

Math Function Weighted Average

ratio

Ratio

Math Function Ratio

Concen

Concentration

Math Function Concentration

nmath2

Math2

Resultant Math

Channel Math operation applied to other math channels (e.g. C3 = C1/C2)

sunm

Sum

Math2 Function Sum

dif

Difference

Math2 Function Difference

Advanced Features Menu & Display Messages

Display

Parameter

Action/Setting

difabs

Absolute Difference

Math2 Function Absolute Difference

aVg

Average

Math2 Function Average

nmulti

Multiply

Math2 Function Multiply

diVide

Divide

Math2 Function Divide

Cutoff

Enter Low Flow Cutoff menu

PV 1

PV 1 Cutoff

Program Cutoff Value for PV 1

PV 2

PV 2 Cutoff

Program Cutoff Value for PV 2

aoutPr

Analog Output Program

Enter Analog Output Programmable

parameters menu

Aout 1

Analog Output 1

Analog Output 1 (If Installed)

SourCE

Analog Output Data Source

Enter Analog Output Data Source menu

PV 1*

Source PV

*Select PV for Analog Output Data Source

Ch C1*

Source Math Channel

*Select C1-4 for Analog Output Data Source

Set 1*

Set Point 1-4

*Select Set Points 1-4

break

Communications Break

Enter the Analog Output value when Communications Break is detected

ignore

Ignore Break

force

Force Break

CALib

Calibration

Enter the Analog Output Calibration menu

nmAx

Maximum

Select Maximum value for all Analog Outputs

nmin

Minimum

Select Minimum value for all Analog Outputs

O-rang

Overrange

Enter the Analog Output value for an Overrange condition

u-rang

Underrange

Enter the Analog Output value for an Underrange condition

user

User

Enter the User menu for assigning function keys and digital I/O

F1*

F1-4

*F1-F4 Function Keys

Previous PV

Next PV

SCAn

Scan

Scan or pause scan

Ack

Acknowledge

Acknowledge relays

reset

Reset

Enter Reset menu

Rst Hi

Reset Max

Reset Maximum

Rst Lo

Reset Min

Reset Minimum

Rst HL

Reset Max-Min

Reset Maximum & Minimum

relay

Relay

Relay menu

Set 1*

Set Points 1-4

Rly d

Relay Disable

Relay Disable (all relays)

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Advanced Features Menu & Display Messages

Display

Parameter

Action/Setting

Rly e

Relay Enable

Relay Enable (all relays)

O Hold

Output Hold

Output Hold (all relays)

d Hold

Display Hold

Display Hold (while held low)

disabl

Disable

Contrl

Manual Control

Manual Control menu

dI 1**

DI 1-4

*Digital Inputs 1-4

nmenu

right

Right

enter

Enter

F on 1*

Force On Relay 1

*Force On Relay 1-4

dO 1*

DO 1-4

*Digital Outputs 1-4

Alnm 1*

Alarm 1-4

*Alarm 1-4

Ack

Acknowledge

reset

Reset

Enter Reset menu

Rst Hi

Reset Max

Reset Maximum

Rst Lo

Reset Min

Reset Minimum

Rst HL

Reset MaxMin

Reset Maximum & Minimum

disabl

Disable

ICAL

Input Calibration

Enter analog channels Input Calibration menu

Ch-A

Channel A

Enter Input Channel A

Ch-b

Channel B

Enter Input Channel B

nmA

Milliamps

Enter Milliamps

C CAL

Milliamp Calibration

Enter Milliamp Calibration

C Lo

Milliamp Low Signal

Enter Milliamp Low Signal

C Hi

Milliamp High Signal

Enter Milliamp High Signal

Volt

Volts

Enter Volts

V CAL

Voltage Calibration

Enter Voltage Calibration

V Lo

Voltage Low Signal

Enter Voltage Low Signal

V Hi

Voltage High Signal

Enter Voltage High Signal

error

Error

Error Message for

Unsuccessful Calibration

diag

Diagnostic

Enter Diagnostics menu

reset

Reset

Reset to Factory Defaults

Led t

LED Test

LEDs cycle through all digits, decimal points, and indicators

info

Info

Displays Scanner information

sft

Software

Displays Software information

Ver

Software Version

Displays Software Version information

Scan Function (SCan)

The Scan menu is used to program the PV scan

mode and the scanner’s behavior on alarm condition.

The operator is able to scan automatically based on a time parameter, or scan manually with front panel keys or digital inputs. The operator is also able to set the scanner to stop on alarm or continue scanning on alarm. To resume scanning the operator must press the Next or Previous button. Please follow the menu below for details. In the Stop on Alarm mode, the scanner will go to the alarmed PV and remain there until the operator manually advances to the next PV or returns to the previous PV. If a new alarm is detected the process is repeated. The scanner ignores old alarms.

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Manual Control Menu (Contrl)

The Manual Control menu is used to control the 4-20 mA analog output and the relays manually, ignoring the input. Each relay and analog output can be programmed independently for manual control. Selecting automatic control sets all relays and analog output for automatic operation.

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Noise Filter (filter)

Most applications do not require changing this parameter. It is intended to help attain a steady display with unsteady (noisy) input data. The field selectable noise filter averages any minor or quick changes in the input data and displays the reading with greater stability. Increasing the filter value will help stabilize the display. However, this will reduce the display response to changes on the input data. The filter level may be set anywhere from 2 to 199. Setting the filter value to zero disables the filter function, and the bypass setting becomes irrelevant. This parameter is associated with the analog input channels, PV1, and PV2.

Noise Filter Bypass (bypass)

The scanner can be programmed to filter small input changes, but allow larger input changes to be displayed immediately, by setting the bypass value accordingly. If the input signal goes beyond the bypass value, it will be displayed immediately with no averaging done on it. The noise filter bypass value may be set anywhere from 0.2 to 99.9. Increasing the bypass value may slow down the display response to changes on the input signal.

Rounding Feature (round)

The rounding feature is used to give the user a steadier display with fluctuating signals. Rounding is used in addition to the filter function.

Rounding causes the display to round to the nearest value according to the rounding criteria selected.

Select Menu (SELect)

The Select menu is used to select the input data linearization function (linear, square root, programmable exponent, or round horizontal tank), math functions, constants, low-flow cutoff, and analog output programming. Multi-point linearization is part of the linear function selection.

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Input Data Conditioning Function Menu (Functn)

The Function menu is used to select the input-to-output transfer function applied to the input data: linear, square root, programmable exponent, or round horizontal tank volume calculation. Multi-point linearization (for PV1 and PV2) is part of the linear function selection. Scanners are set up at the factory for linear function with 2-point linearization. The linear function provides a display that is linear with respect to the input data (e.g 0.000 = 0.000, 10.000 = 10.000, and then 5.000 = 5.000).

Linear Function Menu (Linear)

Scanners are set up at the factory for linear function with 2-point linearization. Up to 32 linearization points can be selected for PV1 and PV2 under the Linear function in the Advanced Features menu. The multi-point linearization can be used to linearize the display for non-linear signals such as those from level transmitters used to measure volume in odd-shaped tanks or to convert level to flow using weirs and flumes with complex exponents.

Note: Multi-point Linearization applies to PV1 and PV2 only. All other PVs use two linearization points.

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Square Root Function Menu (Square)

The square root function is used to calculate flow measured with a differential pressure transmitter. The flow rate is proportional to the square root of the differential pressure. Scale the scanner so that the low input signal (e.g. 4 mA) is equal to zero flow and the high input signal (e.g. 20 mA) is equal to the maximum flow.

Programmable Exponent Function Menu (prog e)

The programmable exponent function is used to calculate open-channel flow measured with a level transmitter in weirs and flumes. The flow rate is proportional to the head height. Scale the scanner so that the low input signal (e.g. 4 mA) is equal to zero flow and the high input signal (e.g. 20 mA) is equal to the maximum flow. This method works well for all weirs and flumes that have a simple exponent in the flow calculation formula. For weirs and flumes with complex exponents it is necessary to use a strapping table and the 32-point linearization of the scanner.

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Round Horizontal Tank Function Menu (rht)

This function is used to calculate volume in a round horizontal tank with flat ends. The volume is calculated based on the diameter and length of the

tank. The tank’s dimensions can be entered in inches

or centimeters; the scanner automatically calculates the volume in gallons or liters. After entering the dimensions, complete the scaling process with the display values calculated by the scanner. The scanner can be re-scaled to display the volume in any engineering unit without the need to re-enter the dimensions again.

Changing the Volume from Gallons to Liters

In the graphic, entering the 48" for the diameter and 120" for the length of the round horizontal tank, the scanner automatically calculates that the volume of the tank is 940.02 gallons.

1. Convert gallons to liters

1 US gallon = 3.7854 L

940.02 gal = 3558.4 L

2. Go to the Setup - PV - Decimal Point menu and

change the decimal point to 1 decimal.

3. Go to the Setup - PV - Scale menu and press

Enter until dis 2 is shown on display line 1.

4. Press Enter and change the display 2 value to

3558.4.

5. The scanner is now displaying the volume in liters.

Note: The display can be scaled to display the volume

in any engineering units.

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Math Functions (nmath)

The Math menu is used to select the math function that will determine the channels’ C1-C4 value. These math functions are applied to PVs and other math channels. The results are displayed by selecting Display Channel C (d Ch C) in the Display menu. Most math functions may be applied to all PVs: For example, it is possible to add up to 16 PVs and calculate the total volume of all the tanks in a field. The Math2 function allows for further calculations on the results of other math channels (e.g. C4 = C2/C1).

The following math functions are available:

Name

Math Operation (Examples) (P = Adder, F = Factor)

Setting

Addition

(PV1+PV2+P)*F

Sunm

Difference

(PV1-PV2+P)*F

diF

Absolute difference

((Abs(PV1- PV2)+P)*F

diFAbS

Average

(((PV1+PV2)/2)+P)*F

AVG

Multiplication

((PV1*PV2)+P)*F

Nmulti

Division

((PV1/PV2)+P)*F

diVide

Max PV

Max value of all selected PVs

Hi-pV

Min PV

Min value of all selected PVs

Lo-pV

Draw

((PV1/PV2)-1)*F

drAuw

Weighted average

((PV2-PV1)*F)+PV1

uwavg

Ratio

(PV1/PV2)*F

Ratio

Concentration

(PV1/(PV1+PV2))*F

Concen

Math 2

Math on other math channels

Nmath2

Addition

C3 = (C1+C2+P)*F

Sunm

Difference

C4 = (C1-C2+P)*F

diF

Absolute difference

C3 = ((Abs(C1- C2)+P)*F

diFAbS

Average

C4 = (((C1+C2)/2)+P)*F

AVG

Multiplication

C3 = ((C1*C2)+P)*F

Nmulti

Division

C4 = ((C1/C2)+P)*F

diVide

Math Constants (Const)

The Math Constants menu is used to set the constants used in the math channel. The math functions include the selected PVs, as well as the constants P (Adder) and the Factor F (Multiplier) as indicated in the above examples.

The Adder constant (P) may be set from -99.999 to

999.999. The Factor constant (F) may be set from 0.001 to

999.999. The above chart details the math functions that may

be selected in the Math Function menu.

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Math Function Menu (nmath)

Notes:

1. In the above menu, “A” & “B” in equations can represent any PVs (PV1-PV16). See table above.

2. Each digit represents one PV in hexadecimal format, except PV16 (G).

3. PV1 – PV9 = 1 - 9, PV10 – PV16 = A – G

4. No PV selected = “underscore symbol”

5. Digit range: 1-G, then “_”

6. If there is an empty digit, the scanner will end the equation at that point.

7. For Math2 Channel, “C” is fixed, indicating which Math Channels are being processed.

8. Please refer to the following graphics for details on various Math Functions:

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Sum Menu (sunm)

Difference Menu (dif)

Difference Absolute Menu (difAbS)

Average Menu (aVg)

Multiplication Menu (nmulti)

Divide Menu (diVide)

Only two PVs at a time will be used for this function.

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Maximum PV Menu (Hi-pV)

Minimum PV Menu (Lo-pV)

Draw Menu (drauw)

Only two PVs at a time will be used for this function.

Weighted Average Menu (uwAvg)

Only two PVs at a time will be used for this function

Ratio Menu (ratio)

Only two PVs at a time will be used for this function

Concentration Menu (Concen)

Only two PVs at a time will be used for this function

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Low-Flow Cutoff (CutofF)

The low-flow cutoff feature allows the scanner to be programmed so that the often unsteady output from a differential pressure transmitter, at low flow rates, always displays zero on the scanner. The cutoff value may be programmed from 0.1 to 999999. When the input data is below the cutoff value, the scanner will display zero. Programming the cutoff value to zero disables the cutoff feature. The cutoff can be disabled to display negative values.

Analog Output Source Programming (aoutpr)

The 4-20 mA analog outputs can be programmed for source of data, overrange and underrange, absolute maximum and minimum output, and communications break values. They can also be recalibrated.

• To calibrate the analog outputs, follow the graphic above.

• The overrange and underrange values are the values that will be output when the display shows an overrange or underrange condition. This setting is common to all analog outputs.

• The maximum and minimum values are the absolute limits for the 4-20 mA output. This setting is common to all analog outputs.

• The communications break value determines the mA output when a Slave fails to reply to a command within the Response time.

Analog Output Value for Loss of 4-20 mA Input (Loop Break)

The AoutPr - Break menu is used to force the analog output to go to a user-specified mA value if a break condition is detected in the 4-20 mA input loop. Selecting Ignore causes the mA output to go to the minimum value.

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Analog Output Calibration

• There is no need to recalibrate the 4-20 mA output when first received from the factory.

• The 4-20 mA outputs is factory calibrated prior to shipment. The calibration equipment is certified to NIST standards.

The 4-20 mA output can be recalibrated in the field. A calibrated digital meter with an input range of at least 25 mA and a resolution of 1 μA is recommended.

• If an uncalibrated meter or a meter with less resolution is used, the calibration of the 4-20 mA output could be adversely affected.

Analog Output Calibration Procedure

1. Wire the PD2-6080/1 4-20 mA output to a current loop that includes a power supply (internal or external 12 to 24 VDC), and the mA input on the digital meter. See Figure 22. 4-20 mA Output Connections on page 21 for details.

2. Turn on all devices. Allow for a 15 to 30 minute warm-up.

3. Go to the Advanced Features menu and navigate to the Analog Output Programming (AoutPr)/Calibration (Calib) menu and press Enter.

4. The display will show 4 nmA. The PD2-6080/1 mA output should now be close to 4 mA. Press Enter and the display will show 04.000. Enter the actual value read by the digital mA meter and press Enter.

5. The display will show 20 nmA. The PD2-6080/1 mA output should now be close to 20 mA. Press Enter and the display will show 20.000. Enter the actual value read by the digital mA meter and press Enter.

6. The PD2-6080/1 will now calculate the calibration factors and store them.

7. Press Menu to exit and return to Run mode.

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Programmable Function Keys User Menu (user)

The User menu allows the user to assign the front panel function keys F1, F2, and F3, the digital input F4 (located on the input signal connector), and four digital inputs (located on the digital I/O connector) to access most of the menus or to activate certain functions immediately (e.g. reset max & min, hold relay states, etc.). This allows the scanner to be greatly customized for use in specialized applications.

The four digital outputs can be assigned to a number of actions and functions executed by the scanner (i.e. alarms, relay acknowledgement, reset max, min, or max & min, tare, and reset tare). The digital outputs can be used to trigger external alarms or lights to indicate these specific events.

Function Keys & Digital I/O Available Settings

Display

Description

sCan

Scan through all PVs

Skip to the next PV

Return to the previous PV

Ack

Acknowledge all active relays that are in a manual operation mode such as auto-manual or latching

reset

Directly access the reset menu

Rst Hi

Reset the stored maximum display values for all channels

Rst Lo

Reset the stored minimum display values for all channels

Rst HL

Reset the stored maximum & minimum display values for all channels

relay

Directly access the relay menu

Set 1*

Directly access the set point menu for relay 1 (*through 4)

Rly d

Disable all relays until a button assigned to enable relays (Rly E) is pressed

Rly E

Enable all relays to function as they have been programmed

O Hold

Hold current relay states and analog output as they are until a button assigned to enable relays (Rly E) is pressed

Display

Description

D Hold

Hold the current display value, relay states, and analog output momentarily while the function key or digital input is active. The process value will continue to be calculated in the background.

disabl

Disable the selected function key or digital I/O

Contrl

Directly access the manual control menu

nmenu

Mimic the menu button functionality (digital inputs only)

Right

Mimic the right arrow/F1 button functionality (digital inputs only)

Mimic the up arrow/F2 button functionality (digital inputs only)

Enter

Mimic the enter/F3 button functionality (digital inputs only)

F on 1*

Force relay 1 (*through 4) into the on state. This function is used in conjunction with a digital input to achieve interlock functionality. See page 51 for details about interlock relays.

Alrnm 1*

Provide indication when alarm 1 (*through 4) has been triggered (digital outputs only)

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Digital Input Menu (dI 1)

Digital Output Menu (dO 1)

Reset Menu (reset)

The Reset menu is used to reset the maximum or minimum reading (peak or valley) reached by the process; both may be reset at the same time by selecting “reset high & low” (rst HL). This is applied to all PVs and math channels.

Resetting is possible by going into the USER menu, selecting a function key or digital input, pressing ENTER to take you to the next level, then pressing the Up arrow until you arrive at the RESET menu. Press ENTER to assign the RESET menu to the selected function key or digital input. Now, when the scanner is in Run Mode, pressing the selected function key will take you to the RESET menu, where you can scroll through Reset Hi (Max), Reset Lo (Min), and Reset HiLo (Reset Max and Min), choosing what value to reset. You can also select the specific reset function (e.g. Reset HiLo) to the selected digital input or function key.

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Input Calibration (ICAL)

Recalibrating the Analog Input Channels (Ch-A & Ch-B)

The analog input channels are calibrated at the factory. If recalibration is needed, follow the flowchart menu above and the instructions below.

1. Enter the ICAL menu to calibrate channel A

and channel B.

2. Select mA or Volt

3. Apply the low (4 mA or 0 V) and high (20 mA

or 10 V) signals as requested.

4. Press Enter to accept the values entered or

press Menu to exit calibration without saving the changes.

Error Message (Error)

An error message indicates that the calibration or scaling process was not successful. After the error message is displayed, the scanner reverts to input 2 during calibration or scaling and to input 1 during internal calibration, allowing the appropriate input signal to be applied or programmed.

The error message might be caused by any of the following:

1. Input signal is not connected to the proper terminals, or it is connected backwards.

2. Minimum input span requirements not maintained.

Input Range

Input 1 & Input 2 Span

4-20 mA

0.15 mA

10 VDC

0.10 VDC

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Troubleshooting

This scanner is a highly sophisticated instrument with an extensive list of features and capabilities. If the programming buttons are used to program the scanner, it may be a difficult task to keep everything straight. That is why we strongly recommend the use of the free ScanView software for all programming activities. A USB cable is provided with the scanner for programming with Scan software.

If you have programmed the scanner with the programming buttons and it is not working as intended, try re-programming the scanner using ScanView software.

Symptom

Check/Action

No display at all

Check power at power connector

Not able to change setup or programming, Locd is displayed

Scanner is password-protected, enter correct six-digit password to unlock or Master Password of 508655.

Scanner does not respond to input change

If a Low-Flow Cutoff Value has been programmed, the scanner will display zero below that point, regardless of the input – which can appear like the scanner is not responding to an input change. Check to make sure the problem is not being caused by an undesired low-flow cutoff value. To prevent the display from showing a negative value, set the low-flow cutoff to a value greater than zero.

Scanner displays error message during scaling (Error)

Check: Input 2 must greater than Input 1, Input 3 must be greater than Input 2, etc.

Scanner displays

1. 999999

2. -99999

Indicating overrange or underrange condition Check the input data value and scaling in Setup menu

Display stop scanning, ■ LED indicator flashing

Check:

1. Stop on alarm feature has been enabled

2. Press PREV or NEXT to resume scanning

Displays break message

Check:

1. RS-485 connection to slave devices

2. Slave Id, register number of slave devices

3. Baud rate and parity of all devices on the bus

4. Scanner Id must be different from other devices

Snooper mode not reading the PVs on the RS-485 bus

Check:

1. Increase Master’s Transmit Delay (e.g. Snooper delay = 100ms, Master delay = 110ms)

2. Increase Snooper’s byte-to-byte timeout

3. Decrease the slave device’s transmit delay to <10ms

4. Snooper cannot read the same PV twice, check setup

Scanner experiencing faults and communication breaks

Check:

1. Increase response time (t-resp) and/or transmit delay (tr dly). This may require some trial and error, as these are dependent upon the number of devices on the bus.

2. Internal Scan ID Modbus address. Addresses 256 (mA) or 257 (V) are used for Channel A, while Addresses 258 (mA) or 259 (V) are used for Channel B.

Scanner not communicating with ScanView software

Check:

1. Serial adapter and cable

2. Serial settings

3. Scanner address, baud rate, and transmit delay

Display does not respond to input data, reading a fixed number

Check: Display assignment, it might be displaying max/ min

Display reading is not accurate

Check:

1. PV Scaling

2. Check format selected: Dec or Ft&In

Relay operation is reversed

Check:

1. Fail-safe in Setup menu

2. Wiring of relay contacts

Relay and status LED do not respond to signal

Check:

1. Relay action in Setup menu

2. Set and reset points

Flashing relay status LEDs

Relays in manual control mode or relay interlock switches opened.

If the display locks up or the scanner does not respond at all

Cycle the power to reboot the microprocessor.

Other symptoms not described above

Call Technical Support for assistance.

Note: Certain sequences of events can cause unexpected results. To solve these issues, it is best to start fresh from factory defaults and use the manual as a step by step programming guide, rather than a random approach to programming. To reset the scanner to factory defaults, see Reset Scanner to Factory Defaults on page 72. In addition, for best results, we recommend using the free ScanView software for all programming needs.

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Diagnostics Menu (diag)

The Diagnostics menu is located in the Advanced Features menu, to access Diagnostics menu see Advanced Features Menu on page 54. This menu

allows the user to test the functionality of all the scanner LEDs, check the scanner’s software and version information, and erase the ScanView software installation files from the scanner. Press the Enter button to view the settings and the Menu button to exit at any time.

Determining Software Version

To determine the software version of a scanner:

1. Go to the Diagnostics menu (diAG) and press Enter button.

2. Press Up arrow button and scroll to Information menu (Info).

3. Press Enter to access the software number (SFT) and version (UER) information. Write down the information as it is displayed. Continue pressing Enter until all the information is displayed.

4. The scanner returns to Run Mode after displaying all the settings.

Reset Scanner to Factory Defaults

When the parameters have been changed in a way

that is difficult to determine what’s happening, it might

be better to start the setup process from the factory defaults.

Instructions to load factory defaults:

1. Enter the Advanced Features menu, see Advanced Features Menu on page 54.

2. Press Up arrow to go to Diagnostics menu

3. Press and hold Right arrow for three seconds, press Enter when display flashes reset.

Note: If Enter is not pressed within three seconds, the display returns to Run Mode.

4. The scanner goes through an initialization sequence (similar as on power-up), and loads the factory default settings.

Testing the Display LEDs

To test all LEDs on the display:

1. Go to the Diagnostics menu (diAG) and

press Enter button.

2. Press Up arrow button and scroll to

LED Test menu (led t)

3. Press the Enter button to activate the LED

Test. The scanner will cycle through all digits, decimal points, and relay indicators to enable the operator to check that all LEDs are functioning properly.

4. Press the Enter button again to access the

Information menu (info) or press the Menu button to return to Run Mode.

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Scanner Operation

The PD2-6080/1 scanner is capable of operating as a Modbus Master, Slave or Snooper. As a Slave, the PD2-6080/1 requires connection to a Master device: PLC, DCS, etc. As a Master, the PD2-6080/1 interfaces up to sixteen slave devices and can alternately display their Process Variables. As a Snooper it can be connected anywhere in the RS-485 bus to read any of the variables being requested by the Master device.

Four math channels (C1-C4) are available to perform operations on any PV or math channel, with adder and factor constants, and display the results. Engineering units or tags may be displayed with all PVs or math channels. Another level of Math functions can be performed on the resultant math channel Math2. For example, the operator can use the Math2 Channel to calculate the Sum of all other Math Channels, which may have each performed a different Math function.

The dual-line display can be customized by the user. Typically, the upper display is used to display the PV, while the lower display is used to display the tag for each PV.

Additionally, the scanner can be set up to display any input or math channel on the upper display and alternate between tag & units on the lower display. The relays and analog output can be programmed to operate based on any PV or math channel.

The scanner is capable of accepting two analog input channels (A and B) of either current (0-20 mA, 4-20 mA) or voltage signals (0-5 V, 1-5 V, 0-10 V,  10 V) and displaying these signals in engineering units from -99999 to 999999 (e.g. a 4-20 mA signal could be displayed as -50.000 to 50.000). The analog input channels must be mapped to PVs using the Slave IDs 256-259.

Button Operation

Button Symbol

Description

Press to enter, exit Programming Mode, or exit max/min readings

Press to move to the previous PV or math channel

Press to move to the next PV or math channel

Press once to pause scanning, press again to resume scanning

Function Keys Operation

During operation, the programmable function keys operate according to the way they have been programmed in the Advanced Features – User menu. See Programmable Function Keys User Menu (user) on page 68 for details.

The table above shows the factory default settings for F1, F2, and F3.

Digital Inputs Operation

Five (5) digital inputs, F4, DI-1 to DI-4, come standard on the meter. These digital inputs are programmed identically to function keys F1, F2, and F3. The inputs are triggered with a contact closure to +5 in the case of digital inputs 1-4 or with an active high signal, see Digital I/O Connections on page 20 for details. The F4 is triggered with a contact closure to COM or with an active low signal. During operation, digital inputs operate according to the way they are programmed in the Advanced Features – User menu.. See Programmable Function Keys User Menu (user) on page 68 for details.

Maximum/Minimum Readings

The max & min readings (peak & valley) reached by the PVs or math channels can be displayed by assigning the display to max/min through the Display Setup menu.

A digital input should be programmed to reset the max & min readings.

RIGHT

ACK

SCAN

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Factory Defaults & User Settings

The following table shows the factory setting for most of the programmable parameters on the scanner.

Factory Defaults & User Settings

Parameter

Display

Default Setting

Mode

nmode

Master

Function Code

FunCod

PV Number

PV.nbr

PV1-PV4 Enabled

Slave ID PV1-16

SlaV.Id

001 - 016

Reg.nbr

40001 Data Type PV1-16

Data

Float

Byte Order

1234

Big-endian

Polling Time

t-poll

5.0 second

Slave Response Timeout

t-resp

10.0 second Serial

Serial

Scanner ID

SCAn.Id

246

Baud

baud

9600

Parity

parity

Even

Byte-to-byte timeout

t-byte

0.01 second

Setup

Tag PV1-16

Tag PV1

PV 1 – PV 16

Units PV1-16

Units PV1

FEET

Units C1-4

Units Ch C1

UnitC1 – UnitC4

Display Format PV1-16

Fornmt PV1

Dec (PD2-6080) Ft-In-16 (PD2-6081)

Display Format C1-4

Fornmt Ch C1

Decimal

Display decimal point

Disp.dp

ddd.ddd

Float decimal point

Flot.dp

ddd.ddd

Number of points

No pts

2 (all PVs and C channels)

Scaling

SCalE pV 1

All Input 1

InP 1

0.000

Display 1

Dis 1

0.000

Input 2

InP 2

10.000

Display 2

Dis 2

10.000

Math, channel C1-4

Sunm

Sum Adder (constant P)

Adder

0.000

Factor (constant F)

Factor

1.000

Factory Defaults & User Settings

Parameter

Display

Default Setting

Filter

Filter, PV 1

Ch-A

Filter, PV 2

Ch-B

Bypass, PV 1

bypass

0.2

Bypass, PV 2

bypass

0.2

Round

Cutoff

Cutoff value, PV 1

Ch-a

0.0 (disabled)

Cutoff value, PV 2

Ch-b

0.0 (disabled)

Display assignment

Dsplay

Line 1

D pV

Display PV

Line 2

d tag

Display tag

Display intensity

d-Inty

Relay 1 assignment

PV 1

Relay 1 action

Act 1

Automatic

Relay 1 set point

Set 1

1.000

Relay 1 reset point

RSt 1

0.500

Relay 2 assignment

PV 2

Relay 2 action

Act 2

Automatic

Relay 2 set point

Set 2

2.000

Relay 2 reset point

RSt 2

1.500

Relay 3 assignment

PV 3

Relay 3 action

Act 3

Automatic

Relay 3 set point

Set 3

3.000

Relay 3 reset point

RSt 3

2.500

Relay 4 assignment

PV 4

Relay 4 action

Act 4

Automatic

Relay 4 set point

Set 4

4.000

Relay 4 reset point

RSt 4

3.500

Fail-safe relay 1

Fls 1

Off

Fail-safe relay 2

Fls 2

Off

Fail-safe relay 3

Fls 3

Off

Fail-safe relay 4

Fls 4

Off

On delay relay 1

On 1

0.0 sec

Off delay relay 1

Off 1

0.0 sec

On delay relay 2

On 2

0.0 sec

Off delay relay 2

Off 2

0.0 sec

On delay relay 3

On 3

0.0 sec

Off delay relay 3

Off 3

0.0 sec

On delay relay 4

On 4

0.0 sec

Off delay relay 4

Off 4

0.0 sec

Page 75

Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

Factory Defaults & User Settings

Parameter

Display

Default Setting

Communications break relay 1

Communications break relay 2

Communications break relay 3

Communications break relay 4

Display 1 analog output

Dis 1

00.00.00

Output 1 value

Out 1

4.000 mA

Display 2 analog output

Dis 2

20.00.00

Output 2 value

Out 2

20.000 mA

Source analog output

Source

PV 1 Overrange output

O-rang

21.000 mA

Underrange output

u-rang

3.000 mA

Communications break output

break

1.000 mA Maximum output

nmAx

23.000 mA

Minimum output

nmin

1.000 mA

F1 function key

Previous PV

F2 function key

Next PV

F3 function key

Scan/Pause

F4 function (digital input)

Acknowledge relays

Digital input 1

DI 1

Digital input 2

DI 2

Right arrow

Digital input 3

DI 3

Up arrow

Digital input 4

DI 4

Enter

Digital output 1

DO 1

Alarm 1

Digital output 2

DO 2

Alarm 2

Digital output 3

DO 3

Alarm 3

Digital output 4

DO 4

Alarm 4

Password 1

Pass 1

000000 (unlocked)

Password 2

Pass 2

000000 (unlocked)

Password 3

Pass 3

000000 (unlocked)

Page 76

Helios PD2-6080/PD2-6081 Modbus® Scanners

Instruction Manual

PRECISION DIGITAL CORPORATION

233 South Street • Hopkinton MA 01748 USA Tel (800) 343-1001 • Fax (508) 655-8990

www.predig.com

LIM2-6080_D

SFT088 Ver 2.020 & up

08/21

Contact Precision Digital

Technical Support

Call: (800) 610-5239 or (508) 655-7300 Fax: (508) 655-8990 Email: [email protected]

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