Precision Digital PD765 User guide

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Page 1

Trident Series PD765 Process & Temperature Meters

Instruction Manual

PRECISION DIGITAL CORPORATION

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

www.predig.com

• 1/8 DIN Digital Panel Meter with NEMA 4X, IP65 Front

• 4-20 mA, ± 10 V, TC & RTD Field Selectable Inputs

• Easy Field Scaling in Engineering Units without Applying an Input

• Full 4-Digit Display, 0.56" (14.2 mm) or 1.20" (30.5 mm)

• Shallow Depth Case Extends Only 3.6" (91 mm) Behind Panel

• Isolated 24 VDC @ 200 mA Transmitter Power Supply Option

• 2 Relays + Isolated 4-20 mA Output Options

• Free PC-Based MeterView Programming & Monitoring Software

• No Assembly Required

• Sunlight Readable Display

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

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

• Input Power Options: 85-265 VAC / 90-265 VDC or 12-36 VDC / 12-24 VAC

• Duplex Pump Controller with Alternation Capability

• External Contacts for Remote Button Operation (Trident X2 Only)

• USB, RS-232, & RS-485 Serial Communication Adapters Options

• Modbus RTU Communication Protocol Standard

• Copy Meter Settings to Other Trident Meters

• Password Protection

• Max/Min Display

• High & Low Alarms with Multiple Reset Actions

• Wide Assortment of NEMA 4X Enclosures for up to Ten Meters

• Light / Horn & Reset Button Accessory for Trident X2

• Control Station Accessory for Remote Operation of Trident X2

• 3-Year Warranty

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Trident Series PD765 Process & Temperature Meters

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 meter.

• 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 MeterView Programming Software

Note: Trident meter is not powered from USB connection

and requires external power to be programmed.

The easiest and quickest way to program your Trident meter is to use the FREE MeterView software. We will even send you a PDA8006 USB adapter, normally sold for $39.00, at no cost if you register your meter at

www.predig.com/free8006 (limit one per customer).

You can program the Trident meter you just bought with the front panel buttons and have the PDA8006 on hand for programming future meters.

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

Watch MeterView Software Video at

https://www.predig.com/meterview

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

• Monitoring up to 100 Trident meters

• Datalogging using your PC

• Generating and saving programming files for

later use

Once your meter 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 meter is installed, you can use the front panel buttons and the instructions in this manual to do so.

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Trident Series PD765 Process & Temperature Meters

Instruction Manual

Table of Contents

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

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

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

General ............................................................................................................ 8

Process Input .................................................................................................. 8

Temperature Inputs ........................................................................................ 8

Relays Option .................................................................................................. 9

Serial Communications .................................................................................. 9

Isolated 4-20 mA Transmitter Output ............................................................ 9

External Button Contacts (X2 Models Only) ................................................. 9

MOD-LH Light / Horn .................................................................................... 10

Compliance Information................................................................................... 10

Safety ............................................................................................................. 10

Electromagnetic Compatibility .................................................................... 10

EU Declaration of Conformity .......................................................................... 11

Safety Information ............................................................................................ 11

Installation......................................................................................................... 12

Unpacking ..................................................................................................... 12

Panel Mounting ............................................................................................. 12

Mounting Dimensions .................................................................................. 12

Connections .................................................................................................. 13

Connector Labeling ..................................................................................... 13

Power Connections ..................................................................................... 15

Signal Connections ..................................................................................... 15

Serial Communication ................................................................................. 16

Relays and 24 V Output Connections ......................................................... 17

Switching Inductive Loads ........................................................................... 17

4-20 mA Output & Input Signal Connections ............................................... 18

Isolated 4-20 mA Signal Splitters & Converters ......................................... 19

Isolated 4-20 mA Signal Splitter .................................................................. 19

4-20 mA to 0-10 VDC Signal Converter....................................................... 19

External Button Contacts on Trident X2 ..................................................... 19

Four-Position Control Station for Remote Operation of Trident

PD765 X2 Buttons ......................................................................................... 19

Setup and Programming .................................................................................. 20

Overview ........................................................................................................ 20

Front Panel Buttons and Status LED Indicators ........................................ 20

Display Functions and Messages ................................................................... 21

Main Menu ..................................................................................................... 22

Setting Numeric Values ................................................................................ 22

Setting Up the Meter (setu) .......................................................................... 22

Setting the Input Signal (inpt) .................................................................... 22

Setting the Decimal Point (dc.pt) ................................................................. 23

Setting the Temperature Scale (F C) ......................................................... 23

Programming the Meter (prog) .................................................................... 23

Scaling the Meter (scal) ............................................................................. 23

Calibrating the Meter (Cal) .......................................................................... 24

Recalibrating Temperature Inputs (Cal) ...................................................... 24

Recalibrating Process Inputs (ICal)............................................................ 24

Setting the Relay Operation (rely) ............................................................. 25

Relay and Alarm Operation ......................................................................... 26

Scaling the 4-20 mA Analog Output (Aout) ................................................. 30

Isolated 4-20 mA Signal Splitters & Converters ........................................... 30

Program the Sensor Break Output Value (SEbr) ......................................... 30

Analog Output when Display is Out of Range ............................................. 30

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Trident Series PD765 Process & Temperature Meters

Instruction Manual

Setting Up the Password (pass) .................................................................. 31

Locking the Meter ........................................................................................ 31

Unlocking the Meter .................................................................................... 31

Advanced Features Menu ............................................................................ 31

Advanced Features Menu & Display Messages .......................................... 31

Offset Adjustment (Adj) ............................................................................... 32

Noise Filter (fltr) ....................................................................................... 32

Noise Filter Bypass (byps) .......................................................................... 32

Serial Communications (serl) .................................................................... 33

Protocol Selection Menu (Prot) .................................................................. 33

Select Menu (SElc) ................................................................ ..................... 33

Linear or Square Root Function (linr or Sqrt) .......................................... 33

Low-Flow Cutoff (cutF) ................................ ................................ ............... 33

Display Intensity (inty) ............................................................................... 34

Meter Copy Function (Copy) ........................................................................ 34

Meterview Software .......................................................................................... 35

Remote Programming .................................................................................. 35

Data Acquisition ........................................................................................... 35

Monitoring ................................ ..................................................................... 35

Monitoring System Parts .............................................................................. 35

MeterView Installation .................................................................................. 35

Running MeterView the First Time .................................................................. 35

Enable Meter and Select Meter Address ..................................................... 35

MeterView Main Window .............................................................................. 36

Main Window Menus ................................................................................... 36

Configuration Window .................................................................................. 37

File Menu ..................................................................................................... 37

Tools Menu .................................................................................................. 37

Password Menu ........................................................................................... 38

Input Tab ..................................................................................................... 38

Set Up Input Type ....................................................................................... 38

Set Up Decimal Point .................................................................................. 38

Set Up Temperature Unit............................................................................. 38

Set Up Temperature Sensor ........................................................................ 38

Scaling Tab ................................................................................................. 39

Relays/Alarms Tab ...................................................................................... 39

Advanced Tab ............................................................................................. 39

Info Tab ....................................................................................................... 39

Customize Window ....................................................................................... 39

Serial Communication Setup ....................................................................... 40

Relays/Alarms Status ................................................................................... 40

Logging Meter Data to File ........................................................................... 40

Log File Sample .......................................................................................... 40

Internal Calibration (ICal) ........................................................................... 41

Operation........................................................................................................... 42

Front Panel Buttons Operation .................................................................... 42

Maximum/Minimum Readings ..................................................................... 42

Remote Operation of Trident X2 Front Panel Buttons ............................... 42

Troubleshooting ............................................................................................... 43

Diagnostics Menu (diag) .............................................................................. 43

Determining Software Version ..................................................................... 43

Reset Meter to Factory Defaults .................................................................. 43

Factory Defaults & User Settings ................................................................ 44

Troubleshooting Tips ................................................................................... 45

Quick Interface Reference Guide ................................................................ .... 46

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Trident Series PD765 Process & Temperature Meters

Instruction Manual

Table of Figures

Figure 1. Panel Cutout and Mounting ................................................................. 12

Figure 2. Meter Dimensions – Side View ............................................................ 12

Figure 3. Case Dimensions – Top View .............................................................. 12

Figure 4. Connector Labeling for PD765-#R0-00 ............................................... 13

Figure 5. Connector Labeling for PD765-6R0-10 ............................................... 13

Figure 6. Connector Labeling for PD765-#R2-00 ............................................... 13

Figure 7. Connector Labeling for PD765-6R2-10 ............................................... 13

Figure 8. Connector Labeling for PD765-#R3-00 ............................................... 13

Figure 9. Connector Labeling for PD765-6R3-10 ............................................... 13

Figure 10. Connector Labeling for PD765-6R3-20 ............................................. 13

Figure 11. Connector Labeling for PD765-7R5-00 ............................................. 14

Figure 12. Connector Labeling for PD765-6R5-10 ............................................. 14

Figure 13. Connector Labeling for PD765-#X0-00 .............................................. 14

Figure 14. Connector Labeling for PD765-6X0-10 .............................................. 14

Figure 15. Connector Labeling for PD765-#X2-00 .............................................. 14

Figure 16. Connector Labeling for PD765-6X2-10 .............................................. 14

Figure 17. Connector Labeling for PD765-#X3-00 .............................................. 14

Figure 18. Connector Labeling for PD765-6X3-10 .............................................. 14

Figure 19. Connector Labeling for PD765-6X3-20 .............................................. 15

Figure 20. Connector Labeling for PD765-7X5-00 .............................................. 15

Figure 21. Connector Labeling for PD765-6X5-10 .............................................. 15

Figure 22. Power Connections ............................................................................ 15

Figure 23. Transmitter Powered by Internal Supply (Optional) ........................ 15

Figure 24. Transmitter Powered by External Supply or Self-Powered ............. 15

Figure 25. Voltage Input Connections ................................................................ 15

Figure 26. Thermocouple Input Connections ..................................................... 16

Figure 27. Three-Wire RTD Input Connections .................................................. 16

Figure 28. Two-Wire RTD Input Connections ..................................................... 16

Figure 29. Four-Wire RTD Input Connections .................................................... 16

Figure 30. Relay & 24 V Output Connections ..................................................... 17

Figure 31. AC and DC Loads Protection ............................................................. 17

Figure 32. Low Voltage DC Loads Protection .................................................... 17

Figure 33. 4-20 mA Output & Input Signal Powered by Meter .......................... 18

Figure 34. 4-20 mA Output Powered by Meter ................................................... 18

Figure 35. 4-20 mA Output Powered Externally ................................................. 18

Figure 36. Trident X2 Powers Both the Heater and 4-20 mA Input Signal ....... 18

Figure 37. Passive 4-20 mA Output from Trident Meter Split into Two

Isolated 4-20 mA Signals ..................................................................................... 19

Figure 38. Passive 4-20 mA Output from Trident Meter Converted to 0-10

VDC Signal .......................................................................................... 19

Figure 39. Meter Copy Connection ..................................................................... 34

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Trident Series PD765 Process & Temperature Meters

Instruction Manual

Introduction

The PD765 Trident digital panel meter is one of the most versatile digital panel meters on the market and will satisfy a wide variety of process and temperature applications. The Trident can be field programmed to accept process voltage (0-5V, 1-5V, etc) and current (4-20 mA) inputs, 100 Ohm RTDs, and the four most common thermocouple types.

One of the Trident’s most useful features is its ability to provide 24 VDC to power the transmitter’s 4-20 mA signal. This reduces costs and simplifies wiring. The Trident is housed in a shallow-depth, 1/8 DIN enclosure that features a NEMA 4X front panel and convenient mounting hardware. There are two power options for the Trident: 85 to 265 VAC or 12-36 VDC and certain configurations of the AC powered meter can provide 24 VDC to power the transmitter, if needed.

Programming and setup can be performed with the four front panel pushbuttons, free MeterView software, or using the Copy function.

Two relays and isolated 4-20 mA output options increase the utility of the Trident meter. The relays can be used for alarm or control applications. The 4-20 mA output provides an isolated retransmission of the input signal; especially useful for temperature inputs like thermocouples and RTDs.

The display height on the standard Trident meter is

0.56" (14.2 mm) and on the Trident X2 the display height is an astounding 1.2" (30.5 mm). The Trident X2 can be read easily from distances of up to 30 feet!

The intensity of the display on both versions of the Trident can be adjusted to compensate for various lighting conditions, especially direct sunlight.

Ordering Information

Trident

85-265 VAC Model

12-36 VDC Model

Options Installed

PD765-6R0-00

PD765-7R0-00

No options

PD765-6R0-10

24 V supply

PD765-6R2-00

PD765-7R2-00

2 relays

PD765-6R2-10

2 relays 24 V supply

PD765-6R3-00

PD765-7R3-00

4-20 mA output

PD765-6R3-10

4-20 mA output 24 V supply

PD765-6R3-20

4-20 mA output dual 24 V supplies

PD765-7R5-00

2 relays 4-20 mA output

PD765-6R5-10

2 relays 4-20 mA output 24 V supply

Trident X2

85-265 VAC Model

12-36 VDC Model

Options Installed

PD765-6X0-00

PD765-7X0-00

No options

PD765-6X0-10

24 V supply

PD765-6X2-00

PD765-7X2-00

2 relays

PD765-6X2-10

2 relays 24 V supply

PD765-6X3-00

PD765-7X3-00

4-20 mA output

PD765-6X3-10

4-20 mA output 24 V supply

PD765-6X3-20

4-20 mA output dual 24 V supplies

PD765-7X5-00

2 relays 4-20 mA output

PD765-6X5-10

2 relays 4-20 mA output 24 V supply

Accessories

Model

Description

PDA1024-01

24 VDC Power Supply for DIN Rail

PDA7420

Trident Meter Copy Cable, 7' (2.1 m)

PDA7422

Trident RS-485 Serial Adapter

PDA7232

Trident RS-232 Serial Adapter

PDA7485-I

RS-232 to RS-485 Isolated Converter

PDA8006

USB Serial Adapter for Programming Meter with MeterView Software*

PDA8232-N

USB to RS-232 Non-Isolated Converter

PDA8485-I

USB to RS-485 Isolated Converter

MOD-LH

Light / Horn / Enclosure Modification

PD659

Signal Isolators, Splitters, & Conditioners

PDA2360

Plastic Control Stations

PD9501

Multi-Function Calibrator

PD9502

Low-Cost Signal Generator

PDX6901

Snubber: 0.01 μF/470 Ω, 250 VAC

*See Free 8006 to receive PDA8006 at no charge.

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Trident Series PD765 Process & Temperature Meters

Instruction Manual

Light / Horn Accessories for Trident X2

Model

Description

MOD-LHRB1

Red Light / Horn and Reset Button with Holes Drilled in Enclosure

(1)

MOD-LHGB1

Green Light / Horn and Reset Button with Holes Drilled in Enclosure

(1)

MOD-LHYB1

Yellow Light / Horn and Reset Button with Holes Drilled in Enclosure

(1)

MOD-LHBB1

Blue Light / Horn and Reset Button with Holes Drilled in Enclosure

(1)

MOD-LHWB1

White Light / Horn and Reset Button with Holes Drilled in Enclosure

(1)

MOD-LH5CB1

Light / Horn with User Choice of Red, Green, Yellow, Blue or White Light, Reset Button, and Holes Drilled in Enclosure

(1)

PDA-BUTTON1R

Red Reset Button

PDA-BUTTON1G

Green Reset Button

PDA-BUTTON1B

Blue Reset Button

PDA-LHR

Red Light / Horn

PDA-LHG

Green Light / Horn

PDA-LHY

Yellow Light / Horn

PDA-LHB

Blue Light / Horn

PDA-LHW

White Light / Horn

PDA-LHW

White Light / Horn

PDA-LH5C

Light / Horn with User Choice of Red, Green, Yellow, Blue or White Light

Note:

1. This MOD supplies the Light / Horn and Reset Button. The enclosure comes pre-drilled with holes for Light / Horn and Reset Button and the user performs the installation and wiring. Meter and enclosure are sold separately. The Light / Horn hole is in the back left corner of the enclosure and the Reset Button is centered on the cover of the enclosure below the meter about an inch off the bottom of the cover except on the PDA3400 series where it is mounted on the side of the enclosure.

PDA2360 Control Stations for Trident X2

Model

Description

PDA2360-E

Emergency Stop Button

PDA2361-A

1 Black Ack Button

PDA2361-Q

1 Black Silence Button

PDA2364-MRUE

4 Black Buttons: Menu, Right, Up, Enter

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

Enclosures

Series

Meters

Material

PDA2300

1-10

Plastic NEMA 4X

PDA2500

1-6

Plastic NEMA 4X

PDA2600

1-6

Stainless Steel NEMA 4X

PDA2700

1-6

Painted Steel NEMA 4

PDA2800

1-2

Plastic NEMA 4X

PDA3400

1-3

Plastic NEMA 4X

Need help selecting the right enclosure?

Go to www.predig.com/esu

Page 8

Trident Series PD765 Process & Temperature Meters

Instruction Manual

Specifications

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

General

Display

Trident: 0.56" (14.2 mm); Trident X2: 1.20" (30.5 mm) red LED, 4 digits (-1999 to 9999)

Display Intensity

Eight user selectable levels. Default intensity is 6.

Front Panel

NEMA 4X, IP65; panel gasket provided

Programming Methods

Four front panel buttons, cloning with Copy feature, PC with MeterView

software, and Modbus registers.

Noise Filter

Programmable from 2 to 199 (0 will disable filter)

Display Update Rate

Process/RTD: 3.7-5/second Thermocouple: 1.8-2.5/second

Overrange

Display flashes 9999

Underrange

Display flashes -1999

Recalibration

All ranges are calibrated at the factory. Recalibration is recommended at least every 12 months.

Max/Min Display

Stored until reset by user or meter is turned off.

Password

Restricts modification of programmed settings.

Non-Volatile Memory

Settings stored for a minimum of 10 years.

Power Options

85-265 VAC, 50/60 Hz; 90-265 VDC, 20 W max or 12-36 VDC; 12-24 VAC, 6 W max.

Required Fuse

UL Recognized, 5 A max, slow-blow; up to 6 meters may share one fuse.

Normal Mode Rejection

64 dB at 50/60 Hz

Isolation

4 kV input/output-to-power line; 500 V input-to-output or output-to-24 VDC supplies. -6R5 & -6X5 models only: 100 V output-to-24 VDC supply

Operating Temperature

-40 to 65°C (-40 to 149°F)

Storage Temperature

-40 to 85°C (-40 to 185°F)

Relative Humidity

0 to 90% non-condensing

Connections

Power & Signal: removable screw terminal blocks accept 12 to 22 AWG. Serial: RJ11 header, standard on all meters.

Enclosure

1/8 DIN, high impact plastic, UL 94V-0, color: gray

Tightening Torque

Screw terminal connectors: 5 lb-in (0.56 Nm)

Weight

9.5 oz. (269 g) (including options)

UL File Number

E160849; UL 508 Industrial Control Equipment

Warranty

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

www.predig.com for complete details.

Process Input

Inputs

0-20 mA, 4-20 mA, 1-5 V, ±10 V

Transmitter Supply

Isolated, one or two transmitter supplies P1: 24 VDC ±10% @ 200 mA max (-10 option) P1 & P2: 24 VDC ±10% @ 200 mA & 40 mA max (-20 option)

Accuracy

±0.05% FS ±1 count; ±0.1% FS ±2 counts for square root

Function

Linear or square root

Low-Flow Cutoff

0 to 9999 (0 disables cutoff function) Point below at which display always shows zero.

Decimal Point

Up to 3 decimals.

Calibration

Scale without signal or calibrate with signal source

Calibration Range

User programmable over entire range of meter

Input Impedance

Voltage range: greater than 1 MΩ, Current range: 50-100 Ω, varies with resettable fuse impedance

Input Overload

Protected by automatically resettable fuse

Temperature Drift

0 to 65C ambient

-40 to 0C ambient

Current: ±0.20% FS

(50 PPM/C) Voltage: ±0.02% FS (1.7 PPM/C)

Current: ±0.80% FS

Voltage:

±0.06% FS

Temperature Inputs

Inputs

Factory calibrated, field selectable: type J, K, T, or E thermocouples and

100 Ω platinum RTD (0.00385 or

0.00392 curve)

Resolution

1°; type T TC & RTD: 1° or 0.1°

Cold Junction Reference

Automatic

Temperature Drift

±2°C maximum

Offset Adjustment

Programmable to ±19.9°. This parameter allows the user to apply an offset value to the temperature being displayed.

Input Impedance

Greater than 100 k

Accuracy

Input Type

Range

Accuracy

(0 - 65 C)

Accuracy (-40 - 0 C)

Resolution

-58 to 1382F

-50 to 750C

±2°F ±1°C

±5°F ±3°C

1°

-58 to 2300F

-50 to 1260C

±2°F ±1°C

±4°F ±2°C

1°

-292 to 700F

-180 to 371C

±2°F ±1°C

±13°F

±7°C

1° or 0.1°

-58 to 1700ºF

-50 to 927ºC

±2°F ±1°C

±11°F

±6°C

1°

RTD

-328 to 1382F

-200 to 750C

±1°F ±1°C

±5°F ±3°C

1° or 0.1°

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Trident Series PD765 Process & Temperature Meters

Instruction Manual

Relays Option

Rating

2 Form C (SPDT); rated 3 A @ 30 VDC or 3 A @ 250 VAC resistive load;

1/14 HP (≈ 50 watts) @ 125/250 VAC

for inductive loads such as contactors, solenoids, etc.

Deadband

0-100% FS, user selectable

Electrical Noise Suppression

A snubber should be connected to each relay contact switching inductive loads to prevent disruption to the microprocessor’s operation. Recommended snubber value:

0.01 µF/470 , 250 VAC (PDX6901).

High or Low Alarm

User may program any alarm for high or low

Relay Operation

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

• Latching (requires manual acknowledge) with/without clear

• Pump alternation control

• Off (disable unused relays)

Relay Reset

Front panel button, terminal at back of meter (X2 models only), or through serial communications

Time Delay

0 to 199 seconds, on and off delays; programmable

Sensor Break Relay Operation

The sensor break relay condition may be programmed for each relay as On (alarm) or Off (nonalarm). The relays will enter these states when a sensor break is detected for RTD or thermocouple inputs. These settings have no effect when current or voltage inputs are selected.

Fail-Safe Operation

Programmable, independent for each relay. Relay coils are energized in non-alarm condition. In case of power failure, relays will go to alarm state.

Auto Initialization

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

Serial Communications

Compatibility

EIA-232, and EIA-485 with PDA7232 and PDA7422 Trident adapters.

Protocol

Modbus RTU

Meter Address

PDC protocol: 0 - 99 Modbus protocol: 1 - 247

Baud Rate

300 – 19,200 bps

Transmit Time Delay

Programmable 0 to 199 ms

Data

8 bit (1 start bit, 1 stop bit)

Parity

None (1 or 2 stop bits), even, or odd (Modbus only; PDC protocol does not use parity)

Turn Around Delay

Less than 2 ms (fixed)

Refer to PDC and Modbus Serial Communication Protocol manuals for details.

Isolated 4-20 mA Transmitter Output

Scaling Range

1.00 to 23.00 mA; reverse scaling

allowed.

Calibration

Factory calibrated for 4-20 mA

Accuracy

±0.1% FS ±0.004 mA

Temperature Drift

50 PPM/°C Note: Analog output drift is separate from input drift.

Isolation

500 V input-to-output or output-to-24 VDC supplies; 4 kV output-to-power line. For -6X5 models only: 100 V output-to-24 VDC supply

External Power

35 VDC maximum

Output Loop Resistance

Power supply

Minimum

Maximum 24 VDC

10 

700 

35 VDC (external)

100 

1200 

Additional 4-20 mA Outputs

The PD659-1MA-2MA can split the optional 4-20 mA output into two isolated 4-20 mA outputs

0-10 VDC Output

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

External Button Contacts (X2 Models Only)

Number

Four

Function

Remote operation of front-panel buttons: programming, reset relays or view/reset max/min readings.

Open State

+5 VDC open contact on button input terminals

Closed State

Closed contact button input terminal to common/ground, active low 0 to 0.4 VDC

Page 10

Trident Series PD765 Process & Temperature Meters

Instruction Manual

MOD-LH Light / Horn

Available for these Models

Trident X2 only.

Light Colors

MOD-LH Models: Red, green, yellow, blue or white. MOD-LH5CB1: User selectable: red, green, yellow, blue, or white.

Light Action

Can be wired to flash (not available on MOD-LH5CB1) or stay steady on

Light / Horn & Reset Button Installation

When MOD-LH is ordered with an enclosure, the user performs installation and wiring of Light / Horn and Reset Button in predrilled holes.

Horn

85 dB

Rating

IP65

Light / Horn Independence

Light and horn can be controlled via separate relays

Power Requirement

No additional power required when wired to a Trident X2 meter. When mounted remote: 24 VDC

Transmitter Power Supply

The Trident X2's internal transmitter power supply is capable of supplying 24 VDC @ 200 mA to power the transmitter and other devices such as the Light / Horn. The following table illustrates how much of this current is required to drive various Light / Horns. If more current is needed, then consider the PDA1024-01.

MOD-LH and MOD-LH5CB1-X2 Models:

Color

Current Required

Color

Current Required

Red

17 mA

Blue

15 mA

Green

15 mA

White

42 mA

Yellow

23 mA

Horn

20 mA

Example: 17 mA (Red Light) + 20 mA (Horn) = 37 mA total current needed from the 200 mA supply. Available current = 163 mA

Reset / Silence Button

NEMA 4X; may be wired to the external button contacts on Trident X2. The Ack front panel button can be used to reset / acknowledge the relays.

Reset Button Labels

The Light / Horn accessory comes with 9 pre-printed message labels the user can affix under the red button: RESET, BATCH, ACK, TARE, SILENCE, STOP, START, PAUSE, START/STOP.

Light / Horn Mounting Connection

M22

Hole Sizes

Light / Horn: 0.875" (22 mm)

Reset Button

0.630" (16 mm)

Cable Length

3.28 feet (1 meter)

Operating Temperature Range

-5 to 40°C (23 to 104°F)

Compliance Information

Safety

Ul Listed

USA and Canada UL 508 Industrial Control Equipment

Ul File Number

E160849

Front Panel

UL Type 4X, NEMA 4X, IP65; panel gasket provided

Low Voltage Directive

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

Electromagnetic Compatibility

Emissions

EN 55011 Group 1 Class A ISM emissions requirements

Radiated Emissions

Class A

AC Mains Conducted Emissions

Class A

Immunity

EN 61326-1 Measurement, control, and laboratory equipment

EN 61000-6-2 EMC heavy industrial generic immunity standard

RFI Amplitude Modulated

80 -1000 MHz 10 V/m 80% AM (1 kHz)

1.4 - 2.0 GHz 3 V/m 80% AM (1 kHz)

2.0 - 2.7 GHz 1 V/m 80% AM (1 kHz)

Electrical Fast Transients

±2kV AC mains, ±1kV other

Electrostatic Discharge

±4kV contact, ±8kV air

RFI Conducted

10V, 0.15-80 MHz, 1kHz 80% AM

AC Surge

±2kV Common, ±1kV Differential

Surge

1KV (CM)

PowerFrequency Magnetic Field

30 A/m 70%V for 0.5 period

Voltage Dips

40%V for 5 & 50 periods 70%V for 25 periods

Voltage Interruptions

<5%V for 250 periods

Note:

Testing was conducted on meters installed through the covers of grounded metal enclosures with cable shields grounded at the point of entry representing installations designed to optimize EMC performance.

Page 11

Trident Series PD765 Process & Temperature Meters

Instruction Manual

EU Declaration of Conformity

EU Declaration of Conformity is available in the Documentation CD provided with the product under the EU DoC menu.

Safety Information

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

• Risk of electric shock.

• Hazardous voltages exist within enclosure.

• Installation and service should be performed only

by trained service personnel.

Page 12

Trident Series PD765 Process & Temperature Meters

Instruction Manual

Installation

There is no need to remove the meter from its case to complete the installation, wiring, and setup of the meter.

Unpacking

Remove the meter from box. Inspect the packaging and contents for damage. Report damages, if any, to the carrier.

If any part is missing or the meter malfunctions, please contact your supplier or the factory for assistance.

Panel Mounting

• Prepare a standard 1/8 DIN panel cutout – 3.622" x 1.772" (92 mm x 45 mm). Refer to Mounting Dimensions for more details.

• Clearance: allow at least 4" (102 mm) behind the panel for wiring.

• Panel thickness: 0.04" - 0.25" (1.0 mm - 6.4 mm). Recommended minimum panel thickness to maintain Type 4X rating: 0.06" (1.5 mm) steel panel, 0.16" (4.1 mm) plastic panel.

• Remove the two mounting brackets provided with the meter (back-off the two screws so that there is ¼" (6.4 mm) or less through the bracket. Slide the bracket toward the front of the case and remove).

• Insert meter into the panel cutout.

• Install mounting brackets and tighten the screws

against the panel. To achieve a proper seal, tighten the mounting bracket screws evenly until meter is snug to the panel along its short side. DO NOT OVER TIGHTEN, as the rear of the panel may be damaged.

Figure 1. Panel Cutout and Mounting

Mounting Dimensions

Figure 2. Meter Dimensions – Side View

Figure 3. Case Dimensions – Top View

1.76"

(45mm)

0.59"

(15mm)

3.2"

(81mm)

2.45"

(62mm)

3.6"

(91mm)

Page 13

Trident Series PD765 Process & Temperature Meters

Instruction Manual

Connections

All connections are made to removable screw terminal connectors located at the rear of the meter.

• 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.

Connector Labeling

The connectors label, affixed to the meter, shows the location of all connectors available with requested configuration. It also identifies the location of the RTD/TC selector switch. The images below show all connector configurations for the PD765. Note that the connector in the upper left of the diagram has different configurations based on the model.

Note: # on the following figures refers to power options. (Example: PD765-6R0-00)

Figure 4. Connector Labeling for PD765-#R0-00

Figure 5. Connector Labeling for PD765-6R0-10

Figure 6. Connector Labeling for PD765-#R2-00

Figure 7. Connector Labeling for PD765-6R2-10

Figure 8. Connector Labeling for PD765-#R3-00

Figure 9. Connector Labeling for PD765-6R3-10

Figure 10. Connector Labeling for PD765-6R3-20

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Trident Series PD765 Process & Temperature Meters

Instruction Manual

Figure 11. Connector Labeling for PD765-7R5-00

Figure 12. Connector Labeling for PD765-6R5-10

Figure 13. Connector Labeling for PD765-#X0-00

Figure 14. Connector Labeling for PD765-6X0-10

Figure 15. Connector Labeling for PD765-#X2-00

Figure 16. Connector Labeling for PD765-6X2-10

Figure 17. Connector Labeling for PD765-#X3-00

Figure 18. Connector Labeling for PD765-6X3-10

Page 15

Trident Series PD765 Process & Temperature Meters

Instruction Manual

Figure 19. Connector Labeling for PD765-6X3-20

Figure 20. Connector Labeling for PD765-7X5-00

Figure 21. Connector Labeling for PD765-6X5-10

Power Connections

Power connections are made to a two-terminal connector labeled POWER on Figures 4-21. See Connector Labeling on page 13. The meter will operate regardless of DC polarity connection. The + and - symbols are only a suggested wiring convention.

Figure 22. Power Connections

Signal Connections

Signal connections are made to a five-terminal connector labeled SIGNAL shown in Figures 4-21. See page 13. Connector Labeling. The COM (common) terminal is the return for all types of input signals.

Current and Voltage Connections

The following figures show examples for 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 front panel buttons.

Figure 23. Transmitter Powered by Internal Supply

(Optional)

Figure 24. Transmitter Powered by External 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 25. Voltage Input Connections

The meter is capable of accepting any voltage from

-10 VDC to +10 VDC.

AC or DC

POWER

Required External Fuse:

5 A max, Slow Blow

POWER CONNECTOR

+ -

Page 16

Trident Series PD765 Process & Temperature Meters

Instruction Manual

Thermocouple and RTD Connections

The following figures show examples for thermocouple and RTD connections.

The RTD/TC selector switch must be set to the proper position for the meter to accept the selected temperature input.

The input type is selected using the Setup menu. The selected thermocouple input must correspond to

the thermocouple sensor and wire type used.

Figure 26. Thermocouple Input Connections

Figure 27. Three-Wire RTD Input Connections

The meter accepts two, three, or four-wire RTDs. The three-wire RTD connection has built-in lead wire compensation.

Figure 28. Two-Wire RTD Input Connections

Lead wire compensation for two-wire RTDs can be applied using the Adjust menu. See Offset Adjustment (Adj) on page 32.

Figure 29. Four-Wire RTD Input Connections

The four-wire RTD connection is similar to the threewire. One of the leads of a four-wire RTD is not connected and may be clipped off.

The three-wire connection provides sufficient lead wire compensation to provide accurate readings even with long leads.

Serial Communication

Serial communication connection is made to an RJ11 connector labeled SERIAL. See Figures under Connector Labeling on page 13. Use PDA7232 for RS-232 interfacing.

Use PDA7422 for RS-485 interfacing. Use PDA7420 for meter-to-meter interfacing for

cloning purposes (i.e. copying programmed settings from one meter to other meters).

Page 17

Trident Series PD765 Process & Temperature Meters

Instruction Manual

Relays and 24 V Output Connections

Relay connections are made to a six-terminal connector labeled RELAY1, RELAY2. See Figures under Connector Labeling on page 13. The COM (common) terminals of the relays should not be confused with the COM (common) terminal of the SIGNAL connector. The 24 VDC output is available at the connector labeled 24V OUT, next to the relays connector.

Figure 30. Relay & 24 V Output Connections

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 31. AC and DC Loads Protection

Choose R and C as follows: R: 0.5 to 1  for each volt across the contacts

C: 0.5 to 1 µF for each amp through closed contacts

Notes:

1. Inductive relay rating is 1/14 HP (50 W) at 115/230 VAC

2. Use capacitors rated for 250 VAC.

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

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

Figure 32. Low Voltage DC Loads Protection

RC Networks 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 1/14th HP (50 watts) with an inductive load.

24V OUT

P+ P-COM NONO NC NC COM

RELAY2 RELAY1

4 36 5 2 1 2 1

C R

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.

Page 18

Trident Series PD765 Process & Temperature Meters

Instruction Manual

4-20 mA Output & Input Signal Connections

The Trident X2, with an optional 4-20 mA output, can be used as an isolated temperature transmitter with a big display by converting the thermocouple or RTD input into an isolated 4-20 mA output.

Connections for the 4-20 mA transmitter output are made to the connector terminals labeled “mA OUT: I-, I+”. The 4-20 mA output may be powered from an internal power supply (optional) or from an external power supply.

Figure 33. 4-20 mA Output & Input Signal

Models include PD765-6R3-20 and PD765-6X3-20

Figure 34. 4-20 mA Output Powered by Meter

Models include PD765-6R5-10, PD765-6X5-10

Figure 35. 4-20 mA Output Powered Externally

Models include PD765-6R3-00, PD765-6X3-00, PD765-7R3-00, PD765-7X3-00, PD765-7R5-00, PD765-7X5-00

Other Uses for Transmitter Power Supplies

The most common use for the Trident’s two power supplies is for the 200 mA transmitter power supply to power the field transmitter and the other power supply to power the 4-20 mA output from the meter. However, the power supplies can be used in other ways. For instance, for level transmitters that require the use of a heated lens, the Trident’s 200 mA power supply could be used to power both the heated lens and the 4-20 mA signal from the transmitter.

Figure 36. Trident X2 Powers Both the Heater

and 4-20 mA Input Signal

COM

SIGNAL CONNECTOR

mA+

21 3 54

V+ T+

EXC

2-Wire

4-20 mA

Transmitter

I-

mA OUT

P2-P1+

45 3 12

P2+

P1-

24V OUT

I+

Remote Display,

Chart Recorder,

etc.

I-

mA OUT

I+

Remote Display,

Chart Recorder,

etc.

24V OUT

P+ P-

External

Power

Supply

I-

mA OUT

I+

Remote Display,

Chart Recorder,

etc.

DW2206

POWER

SIGNAL

EXC T+V+ mA+ COM

RTD

SWITCH

SERIAL

RTD

1 2 3 4 5 6

COM NONO NC NC CO M

RELAY2 RELAY1

4 36 5 2 1

3 41 2 5

2 1

I- I+

mA OUT

6 5

24V OUT

2 1

P+ P-

Page 19

Trident Series PD765 Process & Temperature Meters

Instruction Manual

Isolated 4-20 mA Signal Splitters & Converters

Precision Digital offers DIN rail mountable signal splitters and converters to spit the optional 4-20 mA signal into two isolated 4-20 mA signals or into a 0-10 VDC signal.

Isolated 4-20 mA Signal Splitter

The Trident’s optional 4-20 mA output can be split into two isolated 4-20 mA signals by using the model

PD659-1MA-2MA 4-20 mA signal splitter.

Figure 37. Passive 4-20 mA Output from Trident Meter

Split into Two Isolated 4-20 mA Signals

4-20 mA to 0-10 VDC Signal Converter

The Trident’s optional 4-20 mA output can be converted into a 0-10 VDC signal by using the model

PD659-1MA-1V 4-20 mA to 0-10 VDC signal converter.

Figure 38. Passive 4-20 mA Output from Trident Meter

Converted to 0-10 VDC Signal

External Button Contacts on Trident X2

The Trident X2 is equipped with four external button contacts that can be used to remotely operate the

Trident X2’s front panel buttons. For instance, these

button contacts can be used to program the meter and to remotely acknowledge/reset the relays:

The external button contacts are particularly useful for wiring up a remote button to reset the relays as shown here:

Four-Position Control Station for Remote Operation of Trident PD765 X2 Buttons

The Trident PD765 X2's four programming and operations buttons can be remotely controlled by using the PDA2364-MRUE 4-button control station accessory as shown in the diagram below.

Page 20

Trident Series PD765 Process & Temperature Meters

Instruction Manual

Setup and Programming

This section describes how to program the Trident meter using the front panel buttons. The Trident meter can also be programmed using Meterview Software as described on page 35, or by copying the programing from meter to the next as described on page 34.

• There is no need to recalibrate the meter when first received from the factory.

• The meter is factory calibrated prior to shipment, for all input types, in milliamps, volts, and degrees. The calibration equipment is certified to NIST standards.

Overview

There are no jumpers involved in the setup process of the meter. The RTD/TC selector switch, located between the SIGNAL and SERIAL connectors, must be set accordingly for the meter to accept RTD or thermocouple inputs. See Figures under Connector Labeling on page 13.

Setup and programming is done through the front panel buttons.

After power and signal connections have been completed and verified, apply power to the meter.

For Quick Interface Reference Guide

go to page 46.

For Interactive Virtual Meter Demo visit

predig.com/tvm

Front Panel Buttons and Status LED Indicators

Trident Standard Display

Trident X2 Display

Button

Symbol

Description

LED

Status

1 Alarm 1

Right arrow / Reset

2 Alarm 2

Up arrow / Max

Set point indicator

Enter / Ack

Reset point indicator

*S and R indicators do not appear on X2 versions.

• 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 programming.

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

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

• Press the Right arrow and Menu button simultaneously or hold the Menu button for approximately 3 seconds to access the Advanced Features Menu of the meter.

Page 21

Trident Series PD765 Process & Temperature Meters

Instruction Manual

Display Functions and Messages

The meter displays various functions and messages during setup/programming and operation. The following table shows the displayed functions and messages with their action/setting description.

Display

Parameter

Action/Setting

setu

Setup

Enter Setup menu

inpt

Input

Enter Input menu

4-20

4-20 mA

Set meter for 4-20 mA input

0-10

0-10 VDC

Set meter for 10 VDC input

rtd

RTD

Set meter for RTD input

a385

Alpha 385

Set  = 0.00385 European curve 100 RTD

A392

Alpha 392

Set  = 0.00392 American curve 100 RTD

Set meter for TC input

0 J

Type J

1 k

1 K

Type K

2 T

Type T

3 t.0

3 T.0

Type T, 0.1 resolution

4 E

Type E

f C



F or C

Set temperature scale

F



Set meter to Fahrenheit

C



Set meter to Celsius

dec.p

Decimal point

Set decimal point

prog

Program

Enter the Program menu

scal

Scale

Enter the Scale menu

Cal

Calibrate

Enter the Calibrate menu

inp1

Input 1

Calibrate input 1 signal or program input 1 value

dis1

Display 1

Program display 1 value

inp2

Input 2

Calibrate input 2 signal or program input 2 value

dis2

Display 2

Program display 2 value

err

Error

Error, calibration not successful, check signal

RELY

Relay

Enter the Relay menu

RLY1

Relay 1

Relay 1 setup

Act1

Action 1

Set relay 1 action (automatic, latching, etc.)

Auto

Automatic

Set relay for automatic reset

A-m

Auto-manual

Set relay for automatic + manual reset any time

LtCH

Latching

Set relay for latching operation

L-CL

Latchingcleared

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

Altr

Alternate

Set relays for pump alternation control

oFF

Off

Disable relay and front panel status LEDs Disable relay’s fail-safe operation

Display

Parameter

Action/Setting

Set1

Set 1

Program set point 1

rSt1

Reset 1

Program reset point 1

RLY2

Relay 2

Setup relay 2

Act2

Action 2

Set relay 2 action (automatic, latching, etc.)

Set2

Set 2

Program set point 2

RSt2

Reset 2

Program reset point 2

FLSF

Fail-safe

Enter Fail-safe menu

FLS1

Fail-safe1

Set relay 1 fail-safe operation

Enable fail-safe operation

off

Off

Disable fail-safe operation

FLS2

Fail-safe2

Set relay 2 fail-safe operation

DLAY

Delay

Enter Time Delay menu

DLY1

Delay 1

Enter relay 1 time delay setup

On1

On 1

Set relay 1 On time delay

OFF1

Off 1

Set relay 1 Off time delay

DLY2

Delay 2

Enter relay 2 time delay setup

On2

On 2

Set relay 2 On time delay

OFF2

Off 2

Set relay 2 Off time delay

brek

Break

Set RTD/TC input break relay behavior

Brk1

Relay 1 Break

Set relay 1 input break relay behavior

Off

Set relay to non-alarm condition at break

Set relay to alarm condition at break

Brk2

Relay 2 Break

Set relay 2 input break relay behavior

Aout

Analog output

Enter the Analog output menu

Scal

Scale

Enter the Scale menu

Dis1

Display 1

Program display 1 value

out1

Output 1

Program output 1 value (e.g. 4 mA)

Dis2

Display 2

Program display 2 value

out2

Output 2

Program output 2 value (e.g. 20 mA)

SEbr

Sensor break

Program TC or RTD sensor break value for analog out

pass

Password

Enter the Password menu

unlC

Unlocked

Program password to lock meter

loCd

Locked

Enter password to unlock meter

9999

-1999 open

Flashing display

Overrange condition Underrange condition Open TC or RTD sensor

Page 22

Trident Series PD765 Process & Temperature Meters

Instruction Manual

Main Menu

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

• Press Menu button to enter Programming Mode then press Up arrow button to scroll main menu.

• Press Menu, at any time, to exit and return to Run Mode. Changes made to settings prior to pressing Enter/Ack are not saved.

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

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

Setting Numeric Values

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

The digit being changed is displayed brighter than the rest.

Press the Enter/Ack button, at any time, to accept a setting or Menu button to exit without saving changes.

The decimal point is set using the Up arrow button in the Setup-decimal point menu.

Setting Up the Meter (setu)

The Setup menu is used to select:

1. Input signal the meter will accept

2. Decimal point position for process inputs

3. Units (F or C) for temperature inputs

4. Relay operation

5. 4-20 mA analog output setup

Press the Enter/Ack button to access any menu or press Up arrow button to scroll through choices. Press the Menu button to exit at any time.

Notes:

1. Selecting RTD or TC mode from the Input menu will include the Fahrenheit/Celsius menu in the setup menu structure. RTD will allow the selection of a decimal point location after this menu and TC has a fixed decimal point location and will not allow the selection of a decimal point location.

2. Relay menu is always available even if relays option is not installed. Visual alarm indication is available through front panel LEDs and MeterView software.

3. Analog Output menu is available if selected in the Advanced Features menu. 4-20 mA output option board is installed and set up at the factory.

Setting the Input Signal (inpt)

Enter the Input menu to set up the meter to display current (4-20), voltage (0-10), thermocouple (tC), or RTD (rtd) inputs.

The voltage input is capable of accepting any signal from -10 to +10 VDC. Select voltage input to accept 0-5, 1-5, 0-10, or 10 VDC signals.

The current input is capable of accepting any signal from -20 to 20 mA. Select current input to accept 0-20 or 4-20 mA signals.

Page 23

Trident Series PD765 Process & Temperature Meters

Instruction Manual

If RTD is selected, the display shows A385 or A392. Select the coefficient to match the RTD sensor, either

0.00385 (A385, European curve) or 0.00392 (A392, American curve). The display then shows the decimal point menu, DEc.P. Select the decimal point resolution as shown on page 23.

If TC is selected, scroll through the thermocouple types and select the type matching the TC sensor.

The input signal must be connected to the appropriate input terminals and the RTD/TC selector switch must be set, see Figure 26. Thermocouple Input Connections on page 16.

For thermocouple inputs, allow at least 30

minutes warm-up time for meter to reach

specified accuracy.

Setting the Decimal Point (dc.pt)

The decimal point for process inputs may be set with up to three decimal places or with no decimal point at all.

The decimal point for RTD inputs may be set with 1 decimal place or none.

The decimal point for thermocouple inputs is fixed per input selection.

Pressing the Up arrow moves the decimal point one place to the right until no decimal point is displayed, it then moves to the leftmost position.

Setting the Temperature Scale (F C)

Meters with a thermocouple or RTD input can be set to display temperature in degrees Fahrenheit or Celsius.

Press Up arrow to change selection. Press Enter/Ack to accept.

Programming the Meter (prog)

The meter may either be scaled (ScAL) without applying an input or calibrated (Cal) by applying an input. The meter comes factory calibrated to NIST standards, so for initial setup, it is recommended to use the (ScAL) function.

The Program menu contains the Scale (ScAL) and the Calibrate (Cal) menus.

Process inputs may be scaled or calibrated to any display within the range of the meter.

Scaling the Meter (scal)

The process inputs (4-20 mA and 10 VDC) can be scaled to display the process in engineering units.

A signal source is not needed to scale the meter; simply program the inputs and corresponding display values.

For instructions on how to program numeric

values see Setting Numeric Values, page 22.

Note: The Scale menu is not available for temperature inputs.

Error Message (Err)

An error message indicates that the calibration or scaling process was not successful.

After the error message is displayed, the meter reverts to input 1, allowing the appropriate input signals to be applied.

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

1. Input signal is not connected to the proper

terminals or it is connected backwards.

2. Wrong signal selection in Setup menu.

3. Minimum input span requirements not

maintained.

4. Input 1 signal inadvertently applied to calibrate

input 2.

Page 24

Trident Series PD765 Process & Temperature Meters

Instruction Manual

Minimum Input Span

The minimum input span is the minimum difference between input 1 and input 2 signals required to complete the calibration or scaling of the meter.

Input range

Input 1 & input 2 span

4-20 mA

0.40 mA

10 VDC

0.20 VDC

100F (56C)

RTD

50F (28C)

Calibrating the Meter (Cal)

The meter can be calibrated to display the process in engineering units by applying the appropriate input signals and following the calibration procedure.

The use of a calibrated signal source is required to calibrate the meter.

Recalibrating Temperature Inputs (Cal)

Remember, the meter is calibrated at the factory prior to shipment. Recalibration is recommended at least every twelve months.

The Calibration (CAL) menu is used to recalibrate the thermocouple and RTD inputs.

Allow at least 30 minutes warm-up time before

performing recalibration procedure to ensure

specified accuracy.

Recommended Calibration Points

To recalibrate the meter, it is recommended to use the Fahrenheit scale; this will give a greater degree of accuracy to the calibration. The scale can be changed to the Celsius scale after calibration is completed. The meter will display temperature accurately in any scale. The following table shows the recommended low and high calibration points for all types.

Type of input

Input 1 (Low)

Input 2 (High)

Check (Middle)

Type J T/C

32F

1182F

600F

Type K T/C

32F

1893F

960F

Type T T/C

32F

693F

360F

Type T T/C

32.0F

693.0F

360.0F

Type E T/C

32F

1652F

840F

100  RTD (0.00385)

32F

100

1148F

320.12

590F

215.61

100  RTD (0.00392)

32F

100

1127F

320.89

580F

215.87

Recalibration Procedure for Temperature Inputs

1. Connect signal to the meter using the appropriate wire (e.g. type J thermocouple wire to recalibrate type J input), see page 16.

2. Set up the meter to accept the selected input (e.g. type J T/C), see page 22.

3. Set up the meter to display temperature in degrees Fahrenheit, see page 23.

4. Apply signal corresponding to input 1 (32°F) and program display 1 to 32, see page 24.

5. Apply signal corresponding to input 2 (1182°F for type J) and program display 2 accordingly, see page 24.

6. After the meter accepts input 2, the display flashes the message CJr that indicates the meter is sensing the cold junction reference. This completes the recalibration procedure for the selected input.

Recalibrating Process Inputs (ICal)

The Internal Calibration (ICAL) menu, located in the Advanced features menu, is used to recalibrate the current and voltage inputs. Recalibration is recommended at least every twelve months.

Refer to Internal Calibration (ICal), page 41 for instructions.

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Setting the Relay Operation (rely)

This menu allows you to set up the operation of the relays:

1. Relay action (ACT) 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. Off (relay and status LED disabled)

2. Set point

3. Reset point

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

5. Time delay a. On delay (0-199 seconds) b. Off delay (0-199 seconds)

6. Break Condition Behavior a. Off (non-alarm condition) b. On (alarm condition)

Setting the Relay Action

The relays’ Action menu allows the user to set up the operation of the relays. 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. Off (relay and status LED disabled)

The following graphic shows relay 1 action setup; relay 2 is 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 determined by the difference between set and reset points. Minimum deadband is one display count. If set and reset points are programmed the same, relay will reset one count below set point.

Refer to page 21 for a description of Display Functions and Messages

Quick Set Points

Press Up arrow and Menu at the same time to

access set/reset points quickly.

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Setting Fail-Safe Operation

The fail-safe operation is set independently for each relay. Select on to enable or select off to disable failsafe operation.

Programming Time Delay

The On and Off time delays may be programmed for each relay between 0 and 199 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.

Setting Sensor Break Condition

Sensor Break Operation

The following graphs illustrate the operation of how the meter reacts when a sensor break is detected.

Relay and Alarm Operation

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. For relay to turn back "on", signal must go below set point, and then go above it.

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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.

Time Delay Operation

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

If 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: The LED is not affected by Time Delay when

“Automatic or Manual” reset mode is selected. Rather the LED follows the set and reset points.

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

Error! Reference source not found.

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

Error! Reference source not found.

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Pump Controller with Dual-Pump Alternation

The PD765 can be used as a low-cost pump controller when combined with a continuous level transmitter. One of the most common pump control application is shown below: controlling and alternating two pumps. The goal is to control the level between 1000 and 6000 gallons. The main pump turns on when the level reaches 6000 gallons and pumps down to 1000 gallons and then shuts the pump off. The next cycle, the backup pump turns on at 6000 gallons and shuts off at 1000 gallons. If at any time the active pump can’t keep the level below 7000 gallons, the other pump would come on also.

Pump Alternation Control Operation

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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.

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

The Analog Output menu appears in the Setup menu only on meters that are equipped with a 4-20 mA output. This menu is enabled or disabled at the factory via the Advanced Features menu. For more information on the Advanced Features Menu see page 31.

The Analog Output menu is used to program:

1. 4-20 mA output based on display values

2. Sensor break value in mA

For instructions on how to program numeric

values see Setting Numeric Values, page 22.

Isolated 4-20 mA Signal Splitters & Converters

Precision Digital offers DIN rail mountable signal splitters and converters to spit the optional 4-20 mA signal into two isolated 4-20 mA signals or into a 0-10 VDC signal.

For more information see page 19.

Program the Sensor Break Output Value (SEbr)

The sensor break value corresponds to the output signal generated when the meter detects a sensor break for thermocouple and RTD inputs.

For example if there is an open thermocouple, the

meter displays the message “open” and the analog

output goes to the programmed sensor break value (e.g. 3.00 mA).

The sensor break value can be programmed from

0.00 to 23.99. The typical output signal range is 1.00 to 23.00 mA

(e.g. If sensor break value is programmed to 0.00, the actual output will not be greater than 1.00 mA).

Analog Output when Display is Out of Range

The analog output reflects the display out of range conditions as follows:

Input Condition

Display

Analog Output

Underrange

Flashing -1999

3.00 mA

Overrange

Flashing 9999

21.00 mA

Open TC or RTD

Flashing open

Sensor break value

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Setting Up the Password (pass)

The Password menu is used to program a four-digit password to prevent unauthorized changes to the programmed parameter settings.

Locking the Meter

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

For instructions on how to program numeric values see Setting Numeric Values, page 22.

Record the password for future reference. If appropriate, it may be recorded in the space provided.

Model:

Serial Number:

Password:

__ __ __ __

Unlocking the Meter

If the meter is password protected, the correct password must be entered in order to make changes to the parameter settings.

Entering the correct four-digit number sets the password to 0000, disabling the protection.

Changes to the programmed parameter settings are allowed only with the password set to 0000.

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

Forgot the Password?

The password may be disabled by the following procedure:

1. Note display reading prior to pressing the Menu button. Ignore decimal point and sign.

2. Access the Password menu, add 2 to the noted reading and enter that number as the password (e.g. display reading = -1.23, password = 0125)

Advanced Features Menu

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

Press the Right arrow and Menu button simultaneously or hold the Menu button for approximately 3 seconds to access the Advanced Features Menu of the meter.

1. Available for temperature inputs only

2. Available for process inputs only

Advanced Features Menu & Display Messages

Display Functions and Messages

Display

Parameter

Action/Setting

adj

Adjust

Set offset adjustment for temperature, not available for process inputs

fltr

Filter

Set noise filter value

byps

Bypass

Set filter bypass value

serl

Serial

Set serial communication parameters

prot

Protocol

Enter the Protocol menu

PDC

Select PDC protocol

mbs

Modbus

Select Modbus protocol

addr

Address

Set meter address

baud

Baud rate

Select baud rate

trdE

Transmit delay

Set transmit delay for serial communication

prty

Parity

Select none, even, or odd (Modbus only)

tbyt

Byte-to-byte

Program byte-to-byte timeout (silent time – Modbus only)

Copy

Enter copy function

send

Send

Send meter settings to

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Display Functions and Messages

Display

Parameter

Action/Setting

another meter

done

Done

Copy function completed

Selc

Select

Enter the Select menu (function, cutoff, out)

Func

Function

Select linear or square root function

Linr

Linear

Set meter for linear function

Sqrt

Square root

Set meter for square root extraction

cutF

Cutoff

Set low-flow cutoff

out

Output

Set meter for either relay or analog output (factory set only; only included in certain models)

Aout

Analog output

Set meter for analog output option

rEly

Relay

Set meter for relay option

Aout

Analog output

Enable or disable analog output (factory set only; only included in certain models)

Yes

Enable analog output

Disable analog output

Inty

Intensity

Select display intensity

ICal

Initial calibration

Enter initial calibration for process inputs

Curr

Current

Calibrating current input

I lo

I low

Calibrate low current input

I Hi

I high

Calibrate high current input

volt

Volt

Calibrating voltage input

Vlo

V low

Calibrate low voltage input

VHi

V high

Calibrate high voltage input

diag

Diagnostics

Display parameter settings

led

LED

Test display

CJC

Display cold junction compensation voltage

Cfg

CFG

Display meter configuration

pts

Points

Display calibration points for process inputs

RELY

Relays

Display relay settings

Aout

Analog output

Display analog output settings

GoFF

Gain/offset

Display gain and offset for process inputs

SErL

Serial

Display serial communication settings

Info

Information

Display software version and S/N information

Offset Adjustment (Adj)

This parameter allows the user to select an offset adjustment to the temperature being displayed. Offset adjustment values can be either positive or negative and can be any number within 19.9. The offset adjustment value is programmed through the Adjust menu.

The offset adjustment feature can be useful to compensate for errors due to thermocouple junctions or excessive lead wire resistance in RTDs.

The offset adjustment value is automatically reset to zero whenever the type of temperature sensor is changed (i.e. Thermocouple type or RTD curve).

Celsius/Fahrenheit conversion of the offset adjustment value is automatic, see note 2 below for important limitations.

Notes:

1. Offset adjustment is available only when TC or RTD input is selected.

2. If adjustment value is greater than 11C and the temperature scale is changed to Fahrenheit, the maximum applied adjustment will be 19.9F.

Noise Filter (fltr)

Most applications do not require changing this parameter. It is intended to help attain a steady display with an unsteady (noisy) input signal.

The field selectable noise filter averages any minor or quick changes in the input signal 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 signal.

The filter level may be set anywhere from 2 to 199. Setting filter value to zero disables filter function, and

bypass setting becomes irrelevant.

Noise Filter Bypass (byps)

The meter 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. It corresponds to percentage of full scale for process inputs and to degrees Fahrenheit for temperature inputs.

Increasing the bypass value may slow down the display response to changes on the input signal.

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Serial Communications (serl)

The meter is equipped with serial communications capability as a standard feature using PDC protocol and MeterView software or using the Modbus RTU protocol. The Modbus RTU protocol is included on all models after 5/1/2010. To communicate with a computer or other data terminal equipment, an RS232, RS-485, or USB adapter option is required; see Ordering Information on page 6 for details.

When using more than one meter in an RS-485 multidrop mode, each meter must be provided with its own unique address. The address may be programmed from 00 to 99 for PDC protocol and from 1 to 247 for Modbus protocol. The transmit delay may be set between 0 and 199 ms (see Serial Communication Adapter manual for more details).

The Trident can also be connected directly to another Trident meter through a cable assembly (PDA7420). This allows the user to copy all the settings from one meter to another, using the Copy function.

Protocol Selection Menu (Prot)

The Protocol selection menu is used to select either the PDC or the Modbus protocol. PDC protocol should be selected to run MeterView software.

Select Menu (SElc)

The Select menu is used to select linear or square root function, display intensity, and low-flow cutoff. Selection for relay or analog output is a factory setting depending on the option installed.

• Output options are installed and set up at the factory.

• Changing the output selection will cause erroneous operation.

Note: Depending on meter model, the Select menu will display either out or Aout. In either case, the output selection menu is for factory use only. Do not attempt to change output selection.

Linear or Square Root Function (linr or Sqrt)

Meters are set up at the factory for linear function. The linear function provides a display that is linear with respect to the input signal.

The square root function is used to linearize the signal from a differential pressure transmitter and display flow rate in engineering units.

Low-Flow Cutoff (cutF)

The low-flow cutoff feature allows the meter to be programmed so that the often-unsteady output from a differential pressure transmitter, at low flow rates, always displays zero on the meter.

The cutoff value may be programmed from 0 to 9999. Below the cutoff value, the meter will display zero. Programming the cutoff value to zero disables the cutoff.

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Display Intensity (inty)

The Display Intensity function allows the selection of eight levels of intensity for various lighting conditions.

Meter Copy Function (Copy)

The Copy function is used to copy (or clone) all the settings from one meter to other meters requiring exactly the same setup and programming (i.e. type of input, scaling, decimal point, filter, bypass, etc.).

Figure 39. Meter Copy Connection

Copy Function Requirements

To successfully copy settings from one meter to another, both meters must have:

1. Same software version

2. Same baud rate setting

3. PDC protocol selected

See Determining Software Version, page 43

for instructions.

Meter Cloning Instructions

• Do not connect the two meters to the same 4-20 mA loop while cloning. Internal calibration may be affected.

1. Connect the two meters using cable assembly PDA7420 or equivalent (e.g. Digi-Key P/N H1663-07-ND). Cable should not exceed 7' (2.1 m).

2. Power up both meters. Leave Clone meter in Run Mode.

3. Enter the Advanced Features Menu of the Master meter, see Advanced Features Menu, page 31.

4. Scroll to Copy function using Up arrow button then press Enter/Ack.

5. The meter displays the message Send. Press Enter/Ack, the display flashes while sending data. The message done is displayed when copying is completed.

6. The Clone meter displays the memory address being programmed then the message done when copying is completed. The meter initializes and returns to Run Mode using the same settings as the Master.

7. If meter to be cloned does not respond to the data being sent, refer to Copy Function Requirements above.

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Meterview

Software

Note: Trident meter is not powered from USB connection and requires external power to be programmed.

http://www.predig.com/free8006 (limit one per cus-

tomer). You can program the Trident meter you just bought with the front panel buttons and have the PDA8006 on hand for programming future meters.

Remote Programming

MeterView software allows all setup parameters to be programmed remotely from a PC and saved to a file for reporting or programming other meters.

Data Acquisition

MeterView software provides a convenient way to collect the data generated by the Trident Model PD765 serial output. The user can select the logging time interval. Data can be written to a file, which can then be imported into a spreadsheet or other application.

Monitoring

Meterview software can be used to monitor up to 100 Trident meters on a PC. The user can set a custom meter identification, such as Tank 1 to display on the screen as well as engineering units, such as feet. The screen shot below shows MeterView software monitoring level in six storage tanks:

Monitoring System Parts

The following table illustrates the parts needed to monitor 10 Trident meters:

Quantity

Model

Description

PDA7422

Trident RS-485 Serial Adapter

PDA8485-I

USB to RS-485 Isolated Converter

MeterView Installation

1. Go to www.predig.com/meterview

2. Read instructions & copy serial # of desired

MeterView version

3. Download Installation file to computer

4. Double-click installation file to open it

5. Double-click Setup.exe to begin installation

6. Follow on-screen instructions

Running MeterView the First Time

The first time MeterView is run it is necessary to set up the serial communication settings of the program. Select the communication port and the baud rate of the meter(s) connected.

Note: The selected baud rate in MeterView and the meter(s)

baud rate must be the same. Otherwise a communication error will occur.

Enable Meter and Select Meter Address

The actual meter address is set up at the meter using the front panel buttons. The location where a meter is displayed is selected on MeterView Main window.

To enable or select a meter with a different serial address:

1. Right-click on the screen location of meter.

2. Click on Enabled, if meter is not yet enabled.

3. Click on Change Address.

4. Select meter address to display in this location.

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MeterView Main Window

The main MeterView window shows the present reading(s), relays/alarm status, tag number(s) and selected engineering units, along with other information for each meter. The graphic below indicates the different parts of the main MeterView window.

Main Window Menus

The MeterView main window contains the following menus:

• File menu

• Edit menu

• View menu

• Comm Menu

• Help Menu

File Menu

The following options are available from this menu:

1. Exit to close the MeterView program.

Edit Menu

The following options are available from this menu:

1. Serial Settings to edit the serial communication settings.

2. Number of Meters to automatically populate

the Main Window with a single meter, 10 meters, or 100 meters.

View Menu

The following options are available from this menu:

1. Event Log to view the MeterView event log window where all internal program events and errors are logged.

2. Show Relay Alerts select whether or not MeterView should alert the user of a change in the relay status (ON → OFF or vice versa) with a pop-up message.

Comm Menu

The following options are available from this menu:

1. Stop to halt the automatic meter scanning. This allows quicker access to menu items, functions, and windows.

2. Start to resume the automatic meter scanning.

Help Menu

The following options are available from this menu:

1. Online Resources links to Predig.com for

help and product documentation.

2. About Meterview 3.3 for version number and

build information.

Address being scanned

Logging

System date

COM port used

Update/scan

System time

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Right Click Menu

By right clicking on a meter on the screen a menu will appear with the following options:

Menu Item

Function/Submenus

Enabled

Enable or disable a meter on the screen

Change Address

Change a meter’s serial address in

MeterView

Mode

Show relays

Configure

Access the configuration window for a meter

Customize

Customize how a meter looks on the screen

Notes:

• Accessing menus or other windows could disrupt communication with the meter(s).

• Use left mouse button or tab key on the keyboard to navigate within a window.

• Parameters not available within a window appear grayed-out.

• An arrow next to a box indicates a drop-down menu. Click on arrow to display the drop-down menu.

Configuration Window

Click on Configure in the right click menu to open a

meter’s configuration window. The following settings

can be programmed from this window:

1. Input type (4-20 mA, 0-10 V, RTD, or TC).

2. Decimal point for process inputs (dd.dd).

3. Units (F or C) and sensor type for temperature inputs.

4. Values for scaling process inputs, values for scaling analog output, Password, Adjust (temperature only), Filter, Bypass, Cutoff (process inputs only), Transmit Delay, Function type, and Cut-off.

5. Relay settings.

6. After the last change has been made, click the Write to Meter button or press Enter on the keyboard to send the new settings to the meter, or click on Exit to abandon changes. Before sending the new settings, MeterView will ask to confirm that the meter’s current settings should be overwritten. Click Yes to overwrite the settings, or No to abort the operation and return to the configuration window.

The configuration window contains the following menus:

• File menu

• Tools menu

• Password menu

Note:

• Accessing menus or other windows could disrupt communication with the other meter(s).

File Menu

The following options are available from the File menu:

1. Save Configuration to save the present settings to a file.

2. Load Configuration to load settings from a file.

3. Export to HTML to save the present settings to a HTML file.

4. Import from HTML to load settings from a HTML file.

5. Print Configuration

Tools Menu

The following options are available from the Tools menu:

1. Load Defaults to load the factory default settings.

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It is recommended to save a configuration

file before changing any setting and before

any calibration operation.

Password Menu

The following options are available from the Password menu:

1. Lock Meter to lock the meter and prevent unauthorized changes.

2. Unlock Meter to unlock the meter and allow changes to be made.

3. Change Password to change the unlock password of the meter.

The password must be a four-digit

number; “0000” is the unlocked

password setting.

Input Tab

In the configuration window, click on the Input tab to view the input options.

Set Up Input Type

Click on the arrow next to the 4 to 20 mA box and then click on the desired input type.

Set Up Decimal Point

Click on the arrow next to the dd.dd box and then click on the desired decimal point position. Decimal point selection is available for 4-20 mA and 0-10 V inputs only. The display scale and relay set/reset points are adjusted according to the decimal point selection.

Set Up Temperature Unit

Click on the arrow next to the Degrees F box and then click on the desired temperature unit. Temperature unit selection is available for Thermocouple and RTD inputs only.

Set Up Temperature Sensor

Click on the arrow next to the Type J box and then click on the desired temperature sensor. Temperature sensor selection is available for Thermocouple and RTD inputs only.

Thermocouple

Sensors

RTD Sensors

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Scaling Tab

In the configuration window, click on the Scaling tab to view the scaling settings for process inputs (current and voltage).

Relays/Alarms Tab

In the configuration window, click on the Relays/Alarms tab to view the settings for the re-

lays/alarms.

Advanced Tab

In the configuration window, click on the Advanced tab to view the advanced settings. Consult the meter manual for further details.

Info Tab

In the configuration window, click on the info tab to view the firmware number and version.

Customize Window

Click on Customize in the right click menu to open a

meter’s customize window. The following settings can

be programmed from this window:

1. Tag Number to identify a meter and optionally display it on the meter. Pre-selected special characters may be used in this field by simply dragging the desired symbol into it.

2. Display Units to identify the engineering units of the value being read and optionally display it on the meter. Pre-selected special characters may be used in this field by simply dragging the desired symbol into it.

3. Display Color to change the color of the meter display on the screen.

4. Relay Tag to change the text label of the Relay Status indicator(s).

5. Relay Color to change the color of the Relay Status indicator(s).

Note:

• These settings are NOT saved to the meter.

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Serial Communication Setup

Addresses for Trident Meter

and MeterView are set to 00 at

the factory.

1. From the main window, click on Edit → Serial Settings menu to access the Serial

Communication Setup.

2. Select correct communication port used for Serial Adapter.

3. If timeout error is received, try another serial port selection or check meter’s address.

To change the serial address of a meter, simply click on Change Address in the right-click menu. This setting is on a per-meter basis.

Note:

• Baud rate is set up for 2400 bps at the factory.

Relays/Alarms Status

Each meter enabled in the main MeterView window can display the current status of its relays/alarms (if the meter Mode in the right-click menu is set to Relays) and can allow the user to remotely acknowledge the relays/alarms (if applicable). The text labels and colors for the status indicators may be customized through the Customize window.

Logging Meter Data to File

1. Click on the arrow next to the Interval box to select an interval from 2 to 60 or select manual to log the data only when the Log button is clicked (Log button is only visible when manual is selected).

2. Select seconds, minutes, or hours.

3. Click the Start button.

4. Select file location and enter a file name. Click OK. MeterView will begin logging data to the file.

Logging may be paused or stopped at any time. MeterView will indicate logging and paused status with corresponding message flashing in the main window status bar. When logging, all other MeterView functions and windows are not accessible.

Log File Sample

The HTML log file format contains pertinent information related to the meter and logging selections. Each log entry includes date and time, tag number, serial address, display value, units and relays/alarms status.

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Internal Calibration (ICal)

• There is no need to recalibrate the meter when first received from the factory.

• The meter is factory calibrated prior to shipment, for all input types, in milliamps, volts, and degrees respectively. The calibration equipment is certified to NIST standards.

The internal calibration allows the user to scale the meter without applying a signal. This menu is not available if the meter is set up for TC or RTD inputs.

The use of calibrated signal sources is necessary to perform the internal calibration of the meter.

Check calibration of the meter at least every 12 months. Each input type must be recalibrated separately, if meter will be used with all input types.

Notes:

• If meter is in operation and it is intended to accept only one input type (e.g. 4-20 mA), recalibration of other inputs is not necessary.

• Allow the meter to warm up for at least 30 minutes before performing the internal calibration procedure.

The Internal calibration menu is part of the Advanced Features Menu.

2. Press the Right arrow and Menu button simultaneously or hold the Menu button for approximately 3 seconds to access the Advanced Features Menu of the meter.

3. Press the Up arrow button to scroll to the Internal calibration menu and press Enter/Ack.

4. The meter displays either current (Curr) or voltage (volt), according to the meter input setup. Press Enter/Ack to start the calibration process.

Example for current input internal calibration:

5. The meter displays Low input current (I lo). Apply the low input signal and press Enter/Ack. The display flashes for a moment while meter is accepting the low input.

6. After the display stops flashing, a number is displayed with the leftmost digit brighter than the rest. The bright digit is the active digit that can be changed by pressing the Up arrow button. Press the Right arrow button to move to the next digit.

7. Set the display value to correspond to the input signal being calibrated.

8. The display moves to the high input calibration (I Hi). Apply the high input signal and press Enter/Ack.

9. Set the display for the high input calibration in the same way as it was set for the low input calibration.

For instructions on how to program numeric

values see Setting Numeric Values, page 22.

The graphic above shows the calibration of the current input. The voltage input is calibrated in a similar way.

Tips:

• Low and high input signals can be any valid values within the range of the meter.

• Observe minimum input span requirements between input 1 and input 2.

• Low input must be less than high input signal.

Error Message (Err)

An error message indicates that the calibration or scaling process was not successful. After the error message is displayed, the meter reverts to input 1, allowing the appropriate input signals to be applied.

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

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

2. Wrong signal selection in Setup menu.

3. Minimum input span requirements not maintained.

Minimum Input Span

The minimum input span is the minimum difference between input 1 and input 2 signals required to complete the calibration or scaling of the meter.

Input range

Input 1 & input 2 span

4-20 mA

0.40 mA

10 VDC

0.20 VDC

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Operation

For process inputs, the meter is capable of accepting positive and negative signals and displaying these signals in engineering units from -1999 to 9999 (e.g. a signal from -10 to +10 VDC could be displayed as -10.00 to 10.00).

The temperature inputs are displayed according to the input type and temperature units (F or C) selected. RTD and Type T thermocouple inputs can be displayed with either 1 or 0.1 resolution.

Front Panel Buttons Operation

Button Symbol

Description

Press to enter or exit Programming Mode, view settings, or exit Max/Min readings

Hold to enter Advanced

Press to reset Max/Min readings

Press to display Max/Min readings alternately

Press to display Max/Min reading indefinitely while displaying Max/Min

Press ACK to acknowledge relays

Maximum/Minimum Readings

The main function of the front panel buttons during operation is to display the maximum and minimum readings reached by the process or temperature inputs.

1. Press Up arrow/Max button to display maximum reading since the last reset/power-up.

2. Press Up arrow/Max again to display the minimum reading since the last reset/power-up.

3. Press Enter/Ack to hold Max/Min display reading, the meter will continue to track new Max/Min readings.

4. If Enter/Ack is not pressed, the Max/Min display reading will time out after ten seconds and the meter will return to display the actual reading.

5. Press Right arrow/Reset button to reset Max/Min while reading is being displayed. Max/Min display readings are reset to actual reading.

Remote Operation of Trident X2 Front Panel Buttons

The Trident PD765 X2's four programming and operations buttons can be remotely controlled for performing such remote actions as resetting relays, viewing and resetting max / min readings and programming the meter. The PDA2364-MRUE 4-button control station accessory as shown in the diagram below is a convenient device for operating the buttons remotely.

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Trident Series PD765 Process & Temperature Meters

Instruction Manual

Troubleshooting

For an Interactive Virtual

Meter Demo visit predig.com/tvm

Due to the many features and functions of the meter,

it’s possible that the setup of the meter does not

agree with what an operator expects to see. If the meter is not working as expected, refer to the Diagnostics menu and consult the recommendations described below.

It may also be helpful to program the meter using MeterView software. A free USB adapter can be sent to you if you register your meter.

Diagnostics Menu (diag)

The Diagnostics menu is located in the Advanced Features Menu, to access Diagnostics menu see Advanced Features Menu, page 31.

It provides an easy way to view the programmed parameter settings for troubleshooting purposes. Press the Enter/Ack button to view the settings and the Menu button to exit at any time.

For a description of the diagnostics messages see Advanced Features Menu & Display Messages, page 31.

Determining Software Version

To determine the software version of a meter:

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

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

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

Reset Meter 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, page 31.

2. Press Up arrow to go to Diagnostics menu

3. Press and hold Right arrow/Reset for five seconds, press Enter/Ack when display flashes reset. Note: If Enter/Ack is not pressed within three seconds, display returns to Diagnostics menu.

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

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Trident Series PD765 Process & Temperature Meters

Instruction Manual

Factory Defaults & User Settings

The following table shows the factory setting for most of the programmable parameters on the meter. Next to the factory setting, the user may record the new setting for the particular application. MeterView software allows the saving of all meter parameters to a file for restoring meter settings, reporting, and copying settings to other meters.

Model: ______________ S/N: _______________ Date: _______________

Parameter

Display

Default Setting

User Setting

Input type

inpt

4-20 mA

Decimal point

dd.dd

2 places

Programming

prog

Input 1

InP1

4.00 mA

Display 1

Dis1

4.00 Input 2

InP2

20.00 mA

Display 2

Dis2

20.00

Relay 1

Rly1

Action 1

Act1

Automatic

Set 1

Set1

7.00 Reset 1

RSt1

6.00 Relay 2

Rly2

Action 2

Act2

Automatic

Set 2

Set2

10.00

Reset 2

RSt2

9.00

Fail-safe

flsf

Fail-safe 1

Fls1

Off Fail-safe 2

Fls2

Off Time delay

dlay

On delay 1

On1

0 sec

Off delay 1

Off1

0 sec

On delay 2

On2

0 sec

Off delay 2

Off2

0 sec

Parameter

Display

Default Setting

User Setting

Break 1

Brk1

Off Break 2

Brk2

Off

Password

pass

0000 (unlocked)

Advanced Features

N/A

Adjust

Adj

0.0 (temp only) Filter

fltr

10 Bypass

byps

0.2 Serial settings

serl

Protocol

pdC

PDC protocol

Address

addr

Baud rate

baud

2400

Trans delay

trde

10 ms

Function

Func

Linear

Cutoff value

CutF

0.00 (disabled)

Output option

out/Aou t

Factory set only

Display intensity

inty

Level 8

Modbus defaults

N/A

Address

addr

247

Parity

prty

Even

Byte-to-byte timeout*

tbyt

0.01 sec

*Note: The byte-to-byte timeout setting might be updated automatically depending on the baud rate selected and the previous timeout setting. The minimum timeout allowed is saved to memory if a lower value is entered (e.g. If user enters 0.00 with a baud rate of 300, 0.06 is saved)

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Trident Series PD765 Process & Temperature Meters

Instruction Manual

Troubleshooting Tips

This meter is a highly sophisticated instrument with an extensive list of features and capabilities. If the front panel buttons are used to program the meter, it may be a difficult task to keep everything straight. That is why we strongly recommend the use of the MeterView software for all programming activities. A free USB adapter is available for programming with MeterView software if you register your meter.

Symptom

Check/Action

No display at all

Check power at power connector

Not able to change setup or programming, LoCd is displayed

Meter is locked, enter correct four-digit password to unlock

Meter does not respond to input change

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

Meter displays error message during calibration (err)

Check:

1. Signal connections

2. Input selected in Setup menu

3. Minimum input span requirements

Meter displays

• open

• 9999

• -1999

• Displays negative number, not

responding to RTD.

Check:

1. Input selected in Setup menu

2. TC/RTD Switch position

3. Corresponding signal at Signal connector

Display alternates between

1. Hi and a number

2. Lo and a number

Press Menu to exit Max/Min display readings.

Display response is too slow

Check filter and bypass values

Inaccurate temperature reading

Check:

1. Temperature units (F or C)

2. TC type or RTD curve selected

3. Offset adjustment

4. TC wire used

5. Calibration

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

Cycle the power to restart the microprocessor.

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

Meter not communicating with MeterView or other programs

Check:

1. Serial adapter and cable

2. Serial protocol selected

3. Meter address and baud rate

4. MeterView address and baud rate

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Trident Series PD765 Process & Temperature Meters

Instruction Manual

Quick Interface Reference Guide

Run Mode

Setup

Password

Display

Max/Min

Input

4-20 mA

0-10 V

RTD

Decimal

Point

dddd

d . ddd

dd . dd

ddd . d

A385

A392

Type J

Type K

Type T

Type T.0

Type E

F or C

To Program

Locked Unlocked

TC or RTD? Yes No

Relays

Relay 1

Relay 2

Failsafe

Delays

Action

Set point

Reset point

Auto

Auto & Manual

Latch

Latch w/Clear

Pump Alt

Off

Set point

Failsafe 1

Failsafe 2

To Delays

Delay 1

Delay 2

Off

Analog

output

Scale

Sensor

break

To Password

RTD or Type T

No Yes

Calibrate

Scale

TC or RTD? Yes No

Program

To Relays

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Trident Series PD765 Process & Temperature Meters

Instruction Manual

Right Arrow & Menu

(or hold Menu for 3 sec)

Pushbutton Function Menu Go to Programming Mode or leave Programming, Advanced

Features, and Max/Min Modes.

Right Arrow Move to next digit. Up Arrow Move to next selection or increment digit. Enter/Ack Accept selection/value and move to next selection.

Right Arrow & Menu simultaneously enters Advanced Features

Max/Min Mode

While in Run Mode, pressing Up Arrow will initiate Max/Min Mode. Up Arrow toggles between Max & Min displays, and Right Arrow resets the Max/Min to the current value. Press Menu or wait 10 seconds to return to Run Mode. Pressing Enter/Ack will disable the 10 second timeout and continuously display Max or Min.

Press Right arrow and Menu to access Advanced Features Menu

When the meter is locked, Adjust, Filter and Bypass can only display their settings, and the Copy and ICAL functions are not available.

Adjust

Filter

Bypass

Serial

Copy Send

TC or RTD? Yes No

Initial

Calibrate

Diagnostics

Select

Function

Cutoff

Output

Linear

Sq. Root

Address

TX Delay

Baud

Protocol

Parity

Modbus

PDC

Byte-to-byte

timeout

Modbus? No Yes

Intensity

Program

Run

Max &

Min

Advanced

Features

Up Arrow

Operational Modes

Page 48

Trident Series PD765 Process & Temperature Meters

Instruction Manual

PRECISION DIGITAL CORPORATION

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

www.predig.com

LIM765_U

SFT031 & SFT077 Ver 3.300 & up

02/22

Contact Precision Digital

Technical Support

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

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Call: (800) 343-1001 or (508) 655-7300 Fax: (508) 655-8990 Email: [email protected]

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