Omega PHCN-90 User guide

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Page 1

Chapter Page 1 Introduction 1

1.1 Introduction 1

1.2 Front Panel Description 2

1.3 Rear Panel Description 3

2 Installation and Operation 4

2.1 Mounting Instructions 4

2.2 Power Connections 5

2.3 Input Connections 6

2.4 2-Relay Output Connections 7

2.5 Dual Proportional Relay Connections 8

2.6 Verifying Analog Outputs 9

2.7 Analog Output Connections 10

3 System Configuration 10

3.1 Introduction 10

3.2 Calibration Menu, pH Sensor Inputs 12

3.3 Calibration Menu, Analog Inputs 13

3.4 2-Relay Operation 15

3.5 Dual Proportional Relay Operation 15

3.6 Calibration Menu, Relay Outputs 17

3.7 Calibration Menu, Analog Outputs 19

3.8 View-Only Menus 20

Table of Contents

4 Technical Support 21

4.1 Accessing Internal Options 21

4.2 AC Power Configurations 22

4.3 Security Code Function 22

4.4 Installing Input/Output Options 23

4.5 Input Card Introduction Mode 23

4.6 Option Cards and Accessories 28

4.7 Output Card Configurations 29

4.8 Troubleshooting 30

Specifications 31

Warranty Information 33

Page 2

Important Safety Information!

CAUTION: Remove AC power to unit prior to wiring input and output connections..

Remove AC power before opening unit. Electrical shock hazard exists

Unpacking and Inspection

Your pH controller package includes the following items:

• PHCN-90 pH Controller

• Two stainless steel mounting brackets

• Mounting Instructions w/self-adhesive template

• Panel gasket

• Instruction manual

Page 3

1.1 Introduction

Your new PHCN-90 pH Controller has been specifically designed for pH measurement process control applications. The controller's compact 1/4 DIN enclosure (front) is NEMA 4X/IP65 rated and ideal for installation into instrumentation panels with limited space.

Modular "plug-in" input/output option cards allow you to customize your pH controller to your system's requirements. The controller's unique "slide-out" chassis design makes option installation fast and simple. Smart self-configuring microprocessor based circuitry automatically inventories installed options during power-up, allowing you to upgrade your system in seconds without the need for additional equipment.

The unit's front panel features a highly visible

4.5-digit (seven segment) and 8-digit (alphanumeric) liquid crystal display with adjustable contrast. Active pH, mV, temperature in °C, and alarm relay status information is quickly accessed at a glance. During calibration the user is prompted with clear step-by-step instructions on the unit's front panel display.

Chapter 1

Introduction

The technical data given in this publication is for general information purposes only. It implies no warranty of any kind.

Page 4

1.2 Front Panel Description

pH CONTROLLER

RLY 1 RLY 2

RLY 3 RLY 4

3 4

ENTER MOD

5 6

Item Function

1. Relay An-

nunciators:

Display:

MOD

ENTER

CAL

RELAY

OUTPUT

TEMP

10.

Indicate activation status of optional output "alarm" relays 1 & 2 and additional relays 3 & 4 (proportional or on/off control)

Shows pH, mV, temperature in °C, and relay activation status information2. LCD

A) Accesses one of three calibration menus: CAL, RELAY, OUT B) Enables a calibration parameter for modification C) Restores a calibration parameter to it's original value during calibration.

A) Stores a calibration value into memory after modification B) Used to display available input/output options during normal operation.

A) Accesses the CAL "view-only" menu B) Used in conjunction with MOD key to access the main CAL menu

A) Accesses the RELAY "view-only" menu B) Used in conjunction with MOD key to access the RELAY calibration menu

A) Accesses the OUTPUT "view-only" menu B) Used in conjunction with the "MOD" key to access the OUTPUT calibration menu

A) Displays temperature in degrees Celsius during normal operation B) Decreases the value of a selected calibration digit

A) Displays mV during normal operation B) Increases the value of a selected calibration digit

A) Returns the unit to normal operation mode B) Selects a digit for modification during calibration.

CAL RELAY

OUTPUT

TEMP

8 7

Page 5

1.3 Rear Panel Description

RLY3

RLY4

CNO

1 2 3 4 5 6 7 8 9 10 11 12 13 14

ANL2

R+ R-

SERIAL

Tx GND Rx

PRE-AMP

V+ V-

INPUT

T+ Ain ISO

Note: Rear terminals

accept 18 to 22 AWG

15 16 17 18 19 20 21 22 23 24 25 26 27 28

+ GND

NO C NC

RLY1DC IN

3 4

Function

AC IN

90 to 132 VAC or 180 to 264 VAC system power

NO C NC

RLY2

R+ R-

ANL1

wire

Item

1. AC IN

connection 17 to 30 VDC system power connection

Alarm relay #1 (COM, NO, NC) contact set for external

2. DC IN

3. RLY1

device control (optional) Alarm relay #2 (COM, NO, NC) contact set for external

4. RLY2

device control (optional)

Analog output #1 from option socket #1 (optional) 5. ANL1

Sensor input connections

±5 VDC @ 1 mA power output for pH sensor pre-amp circuit

Serial outputs (future availability)

Analog output #2 from option socket #2 (optional)

Proportional control relay #4 (COM, NO) contact set for external device control (optional)

Proportional control relay #3 (COM, NO) contact set for external device control (optional)

6. INPUT

7. PRE-AMP

. SERIAL

. ANL2

10. RLY4

11. RLY3

Page 6

Chapter 2

Installation and Operation

Figure 1

External dimensions

2.1 Mounting Instructions

The PHCN-90 pH Controller's 1/4 DIN enclosure is specifically designed for panel mounting. Adjustable mounting brackets allow mounting in panels up to one inch (25 mm) thick. An adhesive template and instructions are included to insure proper installation.

For outdoor and/or stand alone installations the splash-proof NEMA 4X/IP65 back cover kit is recommended (ordered separately).

Panel Gasket

3.8 in. sq. 96 mm

Mounting Panel Max. panel thickness = 1 in./25 mm

Mounting Clamp (included, 2 ea.)

SIDE VIEW

5.7 in./145 mm 6 in./152 mm

*Optional NEMA 4X/IP65 Rear Cover

6.5 in./165 mm

7.2 in./183 mm

Panel Cutout Instructions

Recommended panel cutout 3.54 inch (90 mm) square. Maximum panel cutout 3.62 inch (92 mm) square, DO NOT exceed. Use adhesive backed template (included)

3.5 in. 88 mm

Page 7

2.2 Power Connections

AC Power Connections

AC Hot AC Ground*

AC Neutral

15 16 17 18 19 20 21 22 23 24 25 26 27 28

90 to 132 VAC

180 to 264 VAC

Figure 2

AC power wiring Note: DC power

recommended when ground fault interruption devices (GFI's) are used.

AC IN

+ GND

NO C NC

RLY1DC IN

NO C NC

RLY2

Instructions

1. Jumper selectable for 90 to 132 OR 180 to 264 VAC operation. Confirm AC power configuration before applying power. See section 4.2

2. *A direct or low impedance AC ground (earth ground) MUST be used for proper operation.

3. To reduce the possibility of noise interference, AC power lines must be isolated from signal lines.

DC Power Connections

15 16 17 18 19 20 21 22 23 24 25 26 27 28

AC IN

17 to 30 VDC @ 0.5 A

GND

NO C NC

+ GND

RLY1DC IN

NO C NC

RLY2

R+ R-

ANL1

Figure 3

DC power wiring

R+ R-

ANL1

Note: AC/DC power can be connected simultaneously, using DC power as an uninterrupted power source.

*A direct or low impedance earth ground must be used for optimum performance

Page 8

2.3 Input Connections

Three input options are available, providing a wide range of compatibility for most applications.

Note: See section 4.6 for a

listing of available input cards

Figure 4A

Input Wiring

To reduce the possibility of noise interference, separate input lines from AC power lines.

pH Input Card

Provides isolated pH sensor input capability, requiring no internal configuration.

Analog Input Cards

Two analog input options available:

• Analog (iso) current, 4 to 20/0 to 20 mA

• Analog (iso) voltage, 0 to 5/0 to 10 VDC Input ranges are software selectable, requiring no internal configuration.

RLY3

CNO

1 2 3 4 5 6 7 8 9 10 11 12 13 14

RLY4

ANL2

R+ R-

SERIAL

Tx GND Rx

PRE-AMP

V+ V-

INPUT

T+ Ain ISO

PH-2720-PA

pH/ORP Pre-amplifier/

Sensor System

RED BLACK

GREEN

WHITE BROWN

BLUE SILVER

Analog Inputs

earth ground

R+ R-

Page 9

RLY4

ANL2

R+ R-

SERIAL

Tx GND Rx

pH/ORP Transmitter

PRE-AMP

V+ V-

PHTX-8710

INPUT

T+ Ain ISO

RLY3

CNO

1 2 3 4 5 6 7 8 9 10 11 12 13 14

External

DC Power

Supply

2.4 2-Relay Output Connections

The 2-Relay option provides two relays for external device control. Each relay's contacts are rated for 5 A maximum. Both NO and NC contacts may be used simultaneously or individually as shown.

Figure 4B

2-Wire Transmitter Wiring

To reduce the possibility of noise interference, separate input lines from AC power lines.

Figure 5

2-Relay wiring

Device A

External

AC/DC Power Source

NO C NC

RLY2

R+ R-

ANL1

+ GND

NO C NC

RLY1DC IN

Device B

15 16 17 18 19 20 21 22 23 24 25 26 27 28

AC IN

Note: Relay contacts are rated as 5 A @ 250 VAC or

5 A @ 30 VDC maximum resistive load.

Device A is powered during normal operation. Power is discontinued when relay is energized. Device B is not powered during normal operation. Power is applied after relay is energized.

To reduce the possibility of noise interference, separate AC relay lines from input/ output lines.

Page 10

Figure 6

1 2 3 4 5 6 7 8 9 10 11 12 13 14

CNO

RLY3

RLY4

SERIAL

Tx GND Rx

PRE-AMP

V+ V-

T+ Ain ISO

INPUT

CNO

ANL2

R+ R-

Trig. A Trig. A

Metering Pump A

Trig. B Trig. B

Metering Pump B

External AC/DC Power Source

Proportional Control Wiring

2.5 Dual Proportional Relay Connections

The Dual Proportional Relay Card provides two relays (3 and 4) for external device control. Proportional or alarm operation is selectable during calibration. Both relays MUST be like configured, meaning one relay cannot be selected for proportional operation while the other is selected for alarm operation.

If alarm operation is selected, relays 3 and 4 operate as on/off controls similar to relays 1 and

2. The main distinction is the lack of the normally closed (NC) contact. Refer to Figure 5 pg# 7 for further instructions.

If proportional operation is selected, relays 3 and 4 are configured to provide a varying pulse rate to control metering pumps. Relay 3 is dedicated to low range control and relay 4 to high range control.

Note: Relay contacts are

rated as 5A @ 250 VAC or 5A @ 30 VDC maximum resistive load.

To reduce the possibility of noise interference, separate AC relay lines from input/ output lines.

Page 11

2.6 Verifying Analog Outputs

Installed output options can be configured to either of the unit's rear analog output terminals: ANL1 or ANL2. Configuration is determined by which sockets the options are installed. Options installed in option socket #1 are configured to the rear ANL1 terminals, options installed in socket #2 are config-ured to the rear ANL2 terminals, see section 4.4.

Prior to connection, determine which options are configured to terminals ANL1 and ANL2 as follows:

1. Apply power to unit.

2. Press:

ENTER

Available input/output options are

individually prompted on the display.

3. Record option configurations for ANL1 and ANL2 in the spaces provided. This information is necessary for wiring analog outputs in the next section.

ANL1=

(i.e. 4 to 20 mA)

ANL2=

(i.e. N/A)

Option Record

Note:

The unit display's

N/A for unavailable options

Page 12

Figure 7

Analog output wiring

2.7 Analog Output Connections

0 to 20/4 to 20 mA isolated or non-isolated output as well as 0 to 5/0 to 10 VDC isolated or non-isolated outputs are available. See section

4.6 for a list of available output cards.

RLY3

RLY4

CNO

1 2 3 4 5 6 7 8 9 10 11 12 13 14

15 16 17 18 19 20 21 22 23 24 25 26 27 28

AC IN

R+ R-

+ GND

ANL2

SERIAL

Tx GND Rx

NO C NC

RLY1DC IN

PRE-AMP

V+ V-

NO C NC

RLY2

INPUT

T+ Ain ISO

R+ R-

ANL1

Analog Ouput #2 (i.e. 0 to 5 VDC)

etc.

+ +

Analog Output #1

(i.e. 4 to 20 mA*) etc.

*The 4 to 20 mA option is jumper configurable for 0 to 20 mA operation. Refer to section 4.7

Note: The maximum loop impedance for the 4 to 20 mA/0 to 20 mA output is 425 Ω. The minimum load impedance for the 0 to 5/0 to 10 V output is 1 K Ω (1000 Ω). To reduce the possibility of noise interference, separate output lines from AC power/relay lines.

Chapter 3

3.1 Introduction

All the functions which can be modified are contained in three menus:

System Configuration

The CAL (calibrate) menu contains those functions which pertain to the input signal and how it is interpreted by the instrument (i.e. pH standard, pH slope). The CAL menu also provides access to the security code and display contrast features.

The RELAY menu contains all the functions necessary to control any output relays, such as relay

Page 13

setpoint, hysteresis etc. The Output menu provides access to the functions

which define and control all analog output signals, i.e. 4 to 20 mA, 0 to 5 VDC etc.

CAL Menu

CAL

(Sensor input)

• pH standard

• pH slope

• pH temperature °C

• Display decimal

• Sensor gain

• Contrast adjust

RELAY Menu

(LO/HI)

• Relay 1 LO/HI

• Relay 1 setpoint

• Relay 1 hysteresis

• Relay 2 LO/HI

• Relay 2 setpoint

• Relay 2 hysteresis

RELAY

• Security code (Proportional)

(Analog)

• Range select

• Minimum pH setpoint

• Maximum pH setpoint

• Display decimal

• Contrast adjust

• Security code

• Relay 3 and 4 Pulse

• Relay 3 setpoint

• Relay 3 deviation

• Relay 3 pulse value

• Relay 4 setpoint

• Relay 4 deviation

• Relay 4 pulse value

All menus operate using a standard sequence:

1. Press:

2. Enter security code (when active) using:

MOD

to enable calibration sequence.

TEMP

OUTPUT Menu

OUTPUT

• Minimum pH value

• Maximum pH value

• Low output adjust

• High output adjust

Note: A security function is provided which allows the user to "lock out" the calibration menus, restricting access to calibration settings. See section 4.3

All menus are loop type menus which repeat until

pressed.

; press:

ENTER

3. Select menu:

MOD

4. Press:

to enable modifying item.

5. Alter item using:

CAL

RELAY

OUTPUT

; press menu key to select item.

TEMP

; press:

ENTER

to save entry.

6. Press corresponding menu key to advance to next menu item.

7. Repeat steps 4-6 for each menu item. Exit menu by pressing:

Page 14

STD or SLP system

MOD

Security

Code?

Yes

Unlock security code using:

ENTER

Modify?

Yes

Select

next item?

Yes

CAL

Press to set standard with sensor in pH buffer

07.00

SET STD

MOD

Normal operation

ENTER

Recall original value

MOD

CAL

ENTER

Modify?

Yes

Select

next item?

Yes

CAL

Press to set slope with sensor in pH buffer

04.00

SET SLP

MOD

Normal operation

Recall original value

MOD

ENTER

Modify?

Yes

Select

next item?

Yes

CAL

Press to calibrate temp with sensor in pH buffer

25.0

SET TEMP

MOD

Normal operation

Recall original value

MOD

Go to

calibration using the same buffer (i.e. STD = 7.00 pH - 0 mV, SLP = 7.00 pH 0 mV) will cause erratic behavior or pH error. Always ensure at least 1 pH unit (59 mV) between STD and SLP steps. To recover from pH error, properly perform a two point calibration.

Quick Reference Standard & Slope Procedure

(Security OFF):

Security feature can be disabled via an internal dip switch setting, see section

4.3.

1. Press:

2. Press: SET STD, again to SET SLP,

or a third time to SET TEMP (New electrodes: always

MOD

CAL

once to

perform SET TEMP first).

MOD

3. Press: buffer or temp. value using:

3. Press:

4. Press:

then enter

TEMP

ENTER

to save.

CAL

to continue

to exit for normal

operation.

3.2 Calibration Menu, pH Sensor Inputs

• If you are installing a new input card, see section 4.5 (input card introduction mode) prior to performing system calibration.

• New pH electrodes require you to "set temp" before setting standard (STD) and slope (SLP). Allow approximately 3-4 minutes for the sensor temperature to stabilize. This adjustment is normally needed only at time of new electrode installation.

• It is recommended to perform two-point calibration routinely to adjust for electrode change. Example: 1. Set STD for 7.00 pH (0 mV). 2. Set SLP for 4.00 pH (+177 mV) or

10.00 pH (-177 mV).

Decimal set

in step 4

Decimal set

in step 4

Page 15

3.3 Calibration Menu, Analog Inputs

Yes

MOD

Security

Code?

Unlock security code using:

ENTER

CAL

4 to 20 mA option illustrated

mA 0 or 4

CAL

00.00

4mA IS

Decimal set

in step 4

CAL

00.00

20mA IS

Decimal set

in step 4

CAL

Go to

Yes

Modify?

Select

Yes

next item?

Yes

Modify?

Select

Yes

next item?

Yes

Modify?

Select

Yes

item?

Press to select

MOD

operation range: (4-20 or 0-20 mA)

Recall original value

Normal operation

Press to

MOD

enter minimum pH

Recall original value

Normal operation

Press to

MOD

enter maximum pH

Recall original value

Normal operation

MOD

Note: The unit's software

ENTER

recognizes which input card/ configuration is inserted, therefore displaying the corresponding calibration value.

ENTER

- - . - -

PH DP=2

CAL

Continued

Yes

Modify?

Select

item?

Yes

Press to select

MOD

decimal position, 1 or 2 places

Recall original value

Yes

Normal operation

Sensor

Input

MOD

Go to

ENTER

Page 16

• Use x 1 gain setting for PH-2720-PA pH/ORP Pre-amplifier/sensor systems.

• x -3 gain setting used for older preamplifier/sensor systems.

GAIN

CAL

18888

CONTRAST

CAL

Yes

Modify?

Select

item?

Modify?

Select

item?

Yes

MOD

Press to select pre-amp gain, unity (X1) or (X-3)

Recall original value

Normal operation

Press to select best display contrast

Recall original value

Normal operation

ENTER

MOD

ENTER

MOD

Note:

Menu repeats until

is pressed.

0000

SEC CODE

CAL

Yes

Modify?

Repeat Menu?

Yes

MOD

Press to select personal security code (0000 to 9999)

Recall original value

Normal operation

ENTER

MOD

Page 17

3.4 2-Relay Operation

= LO setpoint = Hysteresis

= Relay energized = Relay de-energized

The 2-Relay option allows you to configure individual setpoints, LO or HI operation, and hysteresis values for two independent on/off relays.

• Relay Setpoints: Setpoints represent the pH at which each relay is energized.

• Relay Hysteresis: Hysteresis values directly effect the LO and HI relay modes, specifying how far the pH will rise above (LO Relay Mode) or fall below (HI Relay Mode) each relay's setpoint prior to de-energizing the relay. The main purpose for hysteresis is to eliminating relay "chatter", caused by a pH hovering around a relay's setpoint. Hysteresis values are programmed in direct pH units and must be less than the corresponding relay setpoint, maximum 4 pH units (a pH setpoint of 3.0 cannot have a hysteresis of 4.0). Hysteresis only applies when exiting an alarm condition.

Figure 8

LO relay operation mode

• LO Relay Operation: In LO operation, the relay is energized when the pH drops below the setpoint, and is de-energized when the pH rises above the setpoint plus hysteresis. See Figure 8

• HI Relay Operation: In HI operation, the relay is energized when the pH rises above the setpoint and is de-energized when the pH falls below the setpoint plus hysteresis. See Figure 9

3.5 Dual Proportional Relay Operation

The dual proportional relay option allows you to configure relays 3 and 4 to operate as dual proportional control (pulse) relays or as on/off relays which operate identical to the 2-Relay option.

(continued)

Figure 9

HI relay operation mode

= HI setpoint = Hysteresis

= Relay energized = Relay de-energized

Page 18

9.25 pH

4.55 pH

14 pH

max. pulses (0-120 pulses/minute)

Relay 4 Deviation= 9.45

Relay 3 Deviation= 9.25

5.30 pH

7.50 pH

0 pH

14 pH

Correct

max. pulses (0-120 pulses/minute)

Relay 4 Deviation=

3.50 pH

Relay 3 Deviation=

5.30 pH

11.00 pH

LO and HI

7.30 pH0

14 pH

max. pulses (0-120 pulses/minute)

Relay 4 Deviation=

4.90 pH

Relay 3 Deviation=

5.20 pH

12.20 pH

2.10 pH

Correct

INCORRECT

Figure 10

Dual Proportional relay examples

The dual proportional relay configuration is primarily designed to control external metering pumps. Setpoints, deviation ranges, and maximum pulse rates are selected via the relay menu.

• Setpoint: pH value at which relay pulsing begins. Relay 3 setpoint must be less than or equal to relay 4 setpoint.

• Deviation: Number of pH units from setpoint to maximum pulse rate. Deviation values cannot extend beyond the 0 to 14 pH scale.

• Pulse Rate: Pulse rate selected from 0 to 120 pulses per minute maximum.

Note: Relay 3 setpoint

cannot exceed relay 4 setpoint

Page 19

3.6 Calibration Menu, Relay Outputs

MOD

Security

Code?

Yes

Unlock security code using:

ENTER

RELAY

RLY1 IS

RELAY

04.00

SET RLY1

RELAY

01.00

SET HYS1

Relay 2 go to:

Relay 3 or 4, go to:

Yes

Modify?

Select

next item?

Modify?

Yes

Press to select

MOD

LO or HIGH operation

Recall original value

Normal operation

Press to set

MOD

relay pH setpoint

MOD

ENTER

Note: Displayed decimal

position set in CAL menu

Select

Yes

next item?

Modify?

Yes

Select

next item?

Yes

MOD

Recall original value

Normal operation

Press to set relay hysteresis, (0-4 pH maximum)

Recall original value

Normal operation

MOD

ENTER

MOD

RELAY

PULS

RLY3 4

RELAY

Continued

Yes

Modify?

Select

next item?

Yes

Recall original value

MOD

Normal operation

Press to select LOW, HIGH or Pulse operation

Pulse

Yes

Mode

MOD

Go to

ENTER

Page 20

Note:

ENTER

Modify?

Yes

Select

item?

Yes

RELAY

Press to select relay pH setpoint

06.00

SET RLY3

MOD

Normal operation

Recall original value

MOD

ENTER

Modify?

Yes

Press to set relay deviation (must be less than setpoint)

01.00

RLY3 DEV

MOD

Recall original value

MOD

Select

item?

Yes

RELAY

Normal operation

ENTER

Modify?

Yes

Press to select max. pulses (120 pulses per min. max.)

120

RLY3 MAX

MOD

Recall original value

MOD

Select

item?

Yes

Normal operation

Relay 4 go to:

Menu repeats until

is pressed.

Page 21

3.7 Calibration Menu, Analog Outputs

Yes

MOD

Security

Code?

Unlock security code using:

ENTER

OUTPUT

4 to 20/0 to 20 mA (iso/non-iso) option illustrated

04.00

ANL 1 4m

OUTPUT

10.00

ANL 1 20m

OUTPUT

ADJUST

Yes

Ammeter required, see Figure 11

OUTPUT

ADJUST

Yes

Ammeter required, see Figure 11

OUTPUT

Yes

Modify?

Select

next item?

Modify?

Select

next item?

Modify?

Select

next item?

Modify?

Repeat Menu?

Yes

MOD

Recall original value

Normal operation

Recall original value

Normal operation

Recall original value

Normal operation

Recall original value

Normal operation

Exiting menu: Menu repeats until

Press to select pH value at minimum current output

Press to select pH value at maximum current output

Press to fine tune 4 mA output signal. See note*

Press to fine tune 20 mA output signal. See note*

is pressed.

MOD

ENTER

*Note: Press:

ENTER

quickly access the minimum or maximum current output signal

Press:

tune the current output signal.

ENTER

Figure 11

The min. and max. current adjustment steps require an external ammeter for monitoring the current output.

RLY3

CNO

1 2 3 4 5 6 7 8 9 10 11 12 13 14

15 16 17 18 19 20 21 22 23 24 25 26 27 28

RLY4

CNO

ANL2

R+ R-

SERIAL

Tx GND Rx

R+ R-

TEMP

to fine

PRE-AMP

V+ V-

AMMETER

T+ Ain ISO

RR+

INPUT

AC IN

NO C NC

+ GND

NO C NC

RLY1DC IN

R+ R-

ANL1

RLY2

Page 22

3.8 View-Only Menus

Note:

are designed for viewing only and DO NOT permit access for calibration of any kind. Menus will vary depending upon installed options.

Exiting Menus: Exit view

only menus at any time by pressing:

The view-only menus

Three "view-only" menus (CAL, RELAY, and OUTPUT) are available during normal operation. Each view only menu provides the operator a means of browsing through calibration settings without dis-turbing system calibration and/or the pH measurement process. When used in conjunction with the security feature, the view only menus allow an operator to view most calibration information on the front display, excluding the ability to change system parameters without the supervisors approval and personal security code.

Access each of the three view only menus by pressing it's corresponding menu key. After entering each of the three view only menus, each calibration parameter is sequentially displayed on the

main and lower displays by successively pressing it's corresponding menu key as follows:

Main view-only menu: pH sensor input option illustrated

CAL

Relay view-only menu: 2-Relay output option illustrated

RELAY

Output view-only menu: 4 to 20 mA (iso/non-iso) output option illustrated

pH "Standard" pH "Slope"

mV input gain setting

Relay 1 LO or HI setpoint

Relay 2 hysteresis

OUTPUT

pH setting for 4 mA output

pH setting for 20 mA output

Temperature

Relay 1 hysteresis

Relay 2 LO or HI setpoint

Page 23

4.1 Accessing Internal Options

1. Remove bezel (1) by placing a coin in the notch (2), twist coin to remove the bezel from the instrument casing. See Figure 12

Chapter 4

Technical

2. Loosen the four front bracket screws (3), then loosen the center "jack-screw" (4). See Figure 13

3. Slide the electronics assembly (5) from the instrument casing. See Figure 14

4. Lift upper retainer with adhesive gasket to install/remove plug-in cards. Be sure plug-in cards are properly seated in slots before reassembling

instrument. See Figure 14

Figure 12

Figure 14

card retainer

Input/ output cards

Figure 13

RLY 1 RLY 2 RLY 3 RLY 4

Front Panel

Side View

Push down on card retainer to slide the chassis back into the case.

Input/ output cards

Support

Page 24

Warning: Check AC configuration before applying power.

Figure 15

Main PC Board

Security Feature

123

Enable the security

feature by setting position #1 "closed"

123

Disable the security

feature by setting position #1 "open"

Note: position #2 is used for input card introduction mode access. See section 4.4 pg# 23

OPEN

4.2 AC Power Configurations

Two AC power options are possible; 90 to 132 VAC, or 180 to 264 VAC. Each power option is selectable via internal jumpers on the main pc board.

Option Sockets

OUTPUT CARD #1

1 2 3 4

INPUT CARD

OUTPUT CARD #3

OUTPUT CARD #2

Blue Jumpers

180 to 264 VAC

operation

90 to 132 VAC

operation

Fuse, 1/4 A @ 250 VAC (fast blow)

4.3 Security Code Function

The security function prompts the operator for a 4-digit code during setup menu access, when enabled. This function prohibits unauthorized entry and/or alterations to system parameters.

The security function can be completely disabled by changing an internal dip switch setting as illustrated in Figure 15. The security function is no longer prompted during setup menu access, when disabled.

Page 25

4.4 Installing Input/Output Options

Input/output option cards are "keyed" for proper insertion four sockets. Sockets are located on the unit's main pc board and are clearly marked. See Figure 15 and table below:

Socket Labeled Compatible Options

Input Card Dedicated for input option cards Output Card #1 Accepts all analog option cards, except the Dual

Proportional Relay card.

Output Card #2 Accepts all analog option cards and Dual Propor-

tional Relay Card

Output Card #3 Dedicated for the 2-Relay option card.

4.5 Input Card Introduction Mode

Factory installed input cards are preconfigured and DO NOT require this procedure. This procedure is

recommended for input card replacement only. The input card introduction mode is accessed by

setting an internal dip switch on the main pc board. When accessed, this procedure adds two steps to the CAL menu. First, you must input a pH simulation signal of 4.0 pH and enter the exact simulation value. Second, you must input a pH simulation signal of 10.0 pH and enter the exact simulation value. Simulation signals vary depending on installed input card type.

Simulation signal inputs can be provided by pH sensor/preamplfiier and common pH buffers, pH transmitter, or by external test equipment. See Figure 16 for input simulation options.

A pH 4.0, 7.0, 10.0 buffer capsule kit is offered for pH sensor/preamplfiier inputs PHA-4710 (sec. 4.6)

Page 26

Figure 16

Input simulation options

pH Sensor (mV) Input Card Wiring Options, A or B

3-2720

Pre-amplifier

9030 Intlek-Pro

pH Controller

RED (V+) BLACK (V-) GREEN (T+)

BROWN (sig. out) BLUE (sig. gnd) WHITE (T-)

Digital multimeter

required

3kΩ

9030 Intlek-Pro

SILVER

mV Generator

earth ground

Digital multimeter

R+

R-

required

4-20/0-20 mA Input Card Wiring Options, A or B

Digital

10-30 VDC

Power Supply

Current (mA) Generator

8710 pH/ORP

Transmitter

R+ R-

+GF+

SIGNET

+GF+

pH/ORP Transmitter

Digital

multimeter

required

multimeter

required

9030 Intlek-Pro

#10 (V+)

#11 (V-)

#12 (T+)

#13 (Ain)

#14 (ISO)

pH Controller

#12 (T+)

#13 (Ain)

#14 (ISO)

pH Controller

#13 (Ain)

#14 (ISO)

pH Controller

#13 (Ain)

#14 (ISO)

0-5/0-10 VDC Input Card Wiring

mV Generator

R+ R-

Digital multimeter required

9030 Intlek-Pro

pH Controller

#13 (Ain)

#14 (ISO)

Page 27

Introduction Procedure

1. Access main pc board and close dip switch position 2 to enable introduction mode (sec. 4.1). Open dip switch 1 to disable the security feature.

2. Wire simulation inputs and external digital multimeter as illustrated in Figure 16.

3. Access the calibrate menu as follows:

• Analog input cards, skip to step 4.

• pH Input Cards:

MOD

A. Press:

then

B. Scroll through the menu by pressing

CAL

for CAL menu access.

CAL

until

the lower display reads:

GAIN

-3

GAIN

C. Set the GAIN display to X1. To change, press:

MOD

TEMP

, then press

ENTER

to save.

4. Scroll the CAL menu until the PHCN-90 reads:

mV's displayed mA's displayed mV's displayed

Step 3 assumes the security feature is disabled (sec. 4.2).

X1 GAIN required for PH-2720-PA

Older model preamplifiers use X-3 GAIN.

Preamplifiers.

XXXX

pH< 4

pH Sensor (mV)

Input Card Display

XX.XX

pH< 4

4 to 20/0 to 20 mA

Input Card Display

XXXX

pH< 4

0 to 5/0 to 10 VDC

Input Card Display

5. Apply the proper simulation signal to simulate

4 pH for your input card type (Table 1).

Page 28

Table 1

INPUT CARD: INPUT TYPE: 4.0 pH SIMULATION: 10.0 pH SIMULATION:

(see Figure 16) (step 5): (step 8):

pH Sensor (mV) A PH-2720-PA pH/ORP Place pH sensor in Place pH sensor in Input Card Preamplifier/Sensor pH 4.0 buffer pH 10.0 buffer

(PHCN-9PH)

Record values:

B mV Generator Apply 177 mV Apply -177 mV

4-20/0-20 mA A PHTX-8710 pH/ORP Place sensor Place sensor Input Card Transmitter (unit must in pH 4.0 buffer in pH 10.0 buffer

(PHCN-9MA) be calibrated first,

see transmitter manual) Jumper configurable B mA Generator 4-20 mA range: 4-20 mA range: range, sec. 4.7

apply 8.6 mA apply 15.5 mA

0-20 mA range: 0-20 mA range:

apply 5.7 mA apply 14.3 mA

0-5/0-10 VDC mV Generator 0-5 VDC range: 0-5 VDC range: Input Card apply 1400 mV apply 3600 mV

(PHCN-9V) (1.4 VDC) (3.6 VDC)

Progammable range 0-10 VDC range: 0-10 VDC range: sec. 3.2 apply 2300 mV apply 7200 mV

(2.3 VDC) (7.2 VDC)

*Simulation signal polarity MUST be observed. To enable the negative polarity indicator ( - ), shift the selected

6. Enter the simulation signal value exactly as displayed on the external digital multimeter (DMM) as follows:

display digit to the far left. To disable (remove) the negative polarity indicator, shift the selected digit to the far left a

A. Press:

(display will begin to flash)

MOD

to enable PHCN-90 display

second time.

TEMP

Voltage Input cards: All voltge inputs MUST be entered into memory as mV's (i.e. 1.0 VDC = 1000 mV).

B. Press:

exact* simulation value. Press

keys to enter the

ENTER

to confirm

entry.

Page 29

7. Press:

CAL

(once). The PHCN-90 reads:

mV's displayed

0000

pH>10

pH Sensor (mV)

Input Card Display

mA's displayed mV's displayed

00.00

pH>10

4 to 20/0 to 20 mA

Input Card Display

0 to 5/0 to 10 VDC

Input Card Display

0000

pH>10

8. Apply the recommended simulation signal to simulate 10 pH for your input card type (Table 1). Repeat step 6 to enter and save the second simulation value into memory.

9. Access main pc board and open dip switch position 2 to disable the introduction mode (sec. 4.1). This completes the introduction mode procedure.

Optional: To enable the security feature, close dip switch 1.

You must now recalibrate your pH system. See sections 3.2 - 3.3 for details.

Page 30

4.6 Option Cards and Accessories

Part Number Input Cards

PHCN-9PH pH sensor (mV) input card (isolated)

PHCN-9MA 4 to 20/0 to 20 mA input (isolated)

PHCN-9V 0 to 5/0 to 10 VDC input (isolated)

Part Number Output Cards

PHOR-90-MA-N (Requires 4 to 20/0 to 20 mA (non-isolated) See section 4.7 configuration)

PHOR-90-5V-N 0 to 5 VDC (non-isolated)

PHOR-90-10V-N 0 to 10 VDC (non-isolated)

PHOR-90-MA-I (Requires configuration) 4 to 20/0 to 20 mA (isolated) See section 4.7

PHOR-90-5V-I 0 to 5 VDC (isolated) PHOR-90-10V-I 0 to 10 VDC (isolated)

PHOR-90-R2 2-Relay card

PHOR-90-PC Dual Proportional Relay Card

Part Number Accessories

PHOR-9AP Mounting adapter plate

PHOR-9RC NEMA 4X/IP65 back cover kit

PHA-4710 pH buffer kit, pH 4.0, 7.0, 10.0

(2 capsules each)

Page 31

Part Number Spare Parts

3-9000.525-1 Front bezel

3-9000.575 Panel mounting gasket 3-9000.560 Mounting Clamp

2400-0404 Front cover screws (4 each) 3-9000.570 Front cover gasket

PHOR-9FUSE Fuse, 1/4 A @ 250 VAC (fast blow)

4.7 Output Card Configurations

Each 4 to 20/0 to 20 mA (iso or non-iso) output card contains jumper selections for it's operation range. See instructions below and Figure 19

• Placing the blue jumper in the "A" position configures the card for 4 to 20 mA operation.

• Placing the blue jumper in the "B" position configures the card for 0 to 20 mA operation.

Non-isolated

version

A B

Blue Jumper

Isolated version

Blue

Jumper

Figure 19

4 to 20/0 to 20 mA output cards

Page 32

Figure 20

Displayed error codes

4.8 Troubleshooting

Error codes will be shown on the display after an abnormal occurrence, such as large amounts of electromagnetic interference or a large voltage transient on the AC power line occur.

Displayed error codes represent corrupted setup data in the internal memory which must be reentered by the operator. See Figure 20

Front

Display

CAL Menu Error Codes

01: Reset pH standard setpoint 02: Reset pH slope setpoint 03: Reset pH temperature 04: Reset pH decimal position 05: Reset pH sensor gain 06: Reset display contrast 07: Reset security code

RELAY Menu Error Codes

01: Reset relay 3 & 4 pulse or alarm 02: Reset relay 3 pulse setpoint or LOW/HI operation mode 03: Reset reley 3 deviation or setpoint 04: Reset relay 3 maximum pulses or hysteresis 05: Reset relay 4 pulse setpoint or

LOW/HI operation mode 06: Reset reley 4 deviation or setpoint 07: Reset relay 4 maximum pulses or hysteresis

OUTPUT Menu Error Codes

01: Recalibrate ANL1 settings 02: Recalibrate ANL2 settings

Page 33

Power Requirements

17 to 30 VDC @ 0.5 A max., and/or 90 to 132 VAC @ 50 to 60 Hz, or 180 to 264 VAC @ 50 to 60 Hz (jumper selectable)

Operating Temperature

32 to 130 °F/0 to 55 °C

Relative Humidity

95% R.H. maximum, non-condensing

Enclosure

Materials: ABS plastic NEMA 4X/IP65 front, optional NEMA 4X/IP65 rear cover Dimensions: 3.5 x 3.5 x 6.5 in /

88 x 88 x 165 mm

Memory Backup

Non-volatile RAM

Specifications

Liquid Crystal Display

4.5 digits - 0.5 inch high (upper) 8 digits - 0.3 inch high (lower) Range:pH 0.00 to 14.0

Temperature 4 to 230 °F/-10 to 110 °C

Noise Immunity

Meets IEC 801-3

Compatible Pre-amplifier/Sensor System

PH-2720-PA Pre-amplifier PHE-3271 Flat Surface pH Sensor PHE-2716 General purpose bulb pH Sensor ORE-2715 Flat Surface ORP Sensor ORE-2717 General purpose bulb ORP Sensor

(continued)

Page 34

pH Input (isolated)

pH range: 0 to 14 pH Isolation: 500 VDC to earth ground

Current and Voltage Input (isolated)

Input range: 4 to 20 mA or 0 to 20 mA

0 to 5 VDC or 0 to 10 VDC

Isolation: 500 VDC to earth ground

2-Relay Output Card

2 SPDT contact outputs 5 A @ 250 VAC or 5A @ 30 VDC maximum

Dual Proportional Output Card

2 SPST contact outputs 5 A @ 250 VAC or 5 A @ 30 VDC maximum

4 to 20 or 0 to 20 mA Output Card

Response time: 2.5 s max. for 100% change Max. loop resistance: 425 Ω Isolation: 500 VDC to earth ground (iso. version)

0 to 5 or 0 to 10 VDC Output Card

Response time: 2.5 s max. for 100% change Min. load resistance: 1 kΩ Isolation: 500 VDC to earth ground (iso. version)

Accuracy

Display: pH ±0.02 Analog output: ±0.5% of full scale