Despatch P1400 Installation Manual

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P1400+

E-104

P1400+

P1400+P1400+ TEMPERATURE

TEMPERATURE CONTROLLER

TEMPERATURETEMPERATURE INSTRUCTION MANUAL

INSTRUCTION MANUAL

INSTRUCTION MANUALINSTRUCTION MANUAL

CONTROLLER

CONTROLLER CONTROLLER

PN 197252

REVISION 1-09

TABLE OF CONTENTS

TABLE OF CONTENTS .....................................................................................................................iii

SECTION 1: INTRODUCTION ............................................................................................................1

1.1 General.................................................................................................................................................1

SECTION 2: INSTALLATION..............................................................................................................2

2.1 Unpacking.............................................................................................................................................2

2.2 Installation.............................................................................................................................................2

2.3 Panel Cut-outs......................................................................................................................................3

2.4 Panel-Mounting ....................................................................................................................................3

SECTION 3: PLUG-IN OPTIONS........................................................................................................5

3.1 Options Modules and Functions...........................................................................................................5

3.2 Auto Detection of Option Modules........................................................................................................5

3.3 Preparing to Install or Remove Options Modules.................................................................................7

3.4 Removing/Replacing Option Modules..................................................................................................7

3.5 Replacing the Instrument in its Housing...............................................................................................9

SECTION 4: WIRING INSTRUCTIONS.............................................................................................10

4.1 Installation Considerations .................................................................................................................10

4.2 AC Power Wiring - Neutral (for 100 to 240V AC versions).................................................................10

4.3 Wire Isolation......................................................................................................................................10

4.4 Use of Shielded Cable........................................................................................................................11

4.5 Noise Suppression at Source.............................................................................................................11

4.6 Sensor Placement (Thermocouple or RTD).......................................................................................12

4.7 Thermocouple Wire Identification Chart.............................................................................................13

4.8 Connections and Wiring .....................................................................................................................13

4.9 Power Connections - Mains Powered Instruments ............................................................................15

4.10 Power Connections - 24/48V AC/DC Powered Instruments ...........................................................15

4.11 Universal Input Connections - Thermocouple (T/C).........................................................................16

4.12 Universal Input Connections – PT100 (RTD) input..........................................................................16

4.13 Universal Input Connections - Linear Volt, mV or mA input.............................................................17

4.14 Option Slot 1.....................................................................................................................................17

Relay Output Module...........................................................................................................................17

Option Slot 1 - SSR Driver Output Module..........................................................................................18

Option Slot 1 - Triac Output Module....................................................................................................18

Option Slot 1 - Linear Voltage or mADC Output module.....................................................................18

4.15 Option Slot 2.....................................................................................................................................19

Option Slot 2 - Relay Output Module...................................................................................................19

Option Slot 2 - SSR Driver Output Module..........................................................................................19

Option Slot 2 - Triac Output Module....................................................................................................19

Option Slot 2 - Linear Voltage or mADC Output module.....................................................................20

4.16 Option Slot 3.....................................................................................................................................20

Option Slot 3 - Relay Output Module...................................................................................................20

Option Slot 3 - SSR Driver Output Module..........................................................................................21

Option Slot 3 - Linear Voltage or mADC Output module.....................................................................21

Option Slot 3 - Transmitter Power Supply Module..............................................................................21

4.17 Option Slot A ....................................................................................................................................22

Option Slot A Connections - RS485 Serial Communications Module.................................................22

Option Slot A Connections - Digital Input Module...............................................................................22

Option Slot A Connections – Basic Auxiliary Input Module.................................................................22

4.18 Option Slot B ....................................................................................................................................23

Option Slot B Connections – Heater Current Input Module ................................................................23

Option Slot B Connections – Digital Input 2 (Full Auxiliary Module)...................................................23

Option Slot B Connections – 1/4 DIN Full Auxiliary Input Module........................................................23

SECTION5: POWERING UP.............................................................................................................24

5.1 Powering Up Procedure......................................................................................................................24

5.2 Overview of Front Panel.....................................................................................................................24

5.3 Displays ..............................................................................................................................................25

5.4 Keypad................................................................................................................................................25

5.5 LED Functions ....................................................................................................................................25

SECTION 6: MESSAGES AND ERROR INDICATIONS ...................................................................26

SECTION 7: INSTRUMENT OPERATION MODES...........................................................................27

7.1 Select Mode........................................................................................................................................27

Entry into the Select Mode..................................................................................................................27

Navigating in Select Mode ..................................................................................................................27

Unlock Codes...................................................................................................................................... 27

7.2 Automatic Tune Mode.........................................................................................................................28

Navigating in Automatic Tune Mode...................................................................................................28

7.3 Product Information Mode ..................................................................................................................29

Navigating in the Product Information Mode ...................................................................................... 29

7.4 Lock Code View..................................................................................................................................31

Entry and Navigating in Lock Code View Mode ................................................................................. 31

SECTION 8: 1400+ CONTROLLER – MODEL GROUP....................................................................32

8.1 1400+ Controllers - Configuration Mode.............................................................................................32

Entry into the Configuration Mode...................................................................................................... 32

Scrolling through Parameters and Values.......................................................................................... 32

Changing Parameter Values...............................................................................................................33

8.2 1400+ – Setup Mode ..........................................................................................................................39

Entry into the Setup Mode .................................................................................................................. 39

Scrolling through Parameters & Values..............................................................................................39

Changing Parameter Values...............................................................................................................39

8.3 1400+ Controllers - Operator Mode....................................................................................................43

1400+ Controllers – Extended Operator Mode...................................................................................43

Navigating in Operator Mode..............................................................................................................43

Adjusting the Local Setpoint(s).................................................................................................................45

8.4 Adjusting the Setpoint Ramp Rate......................................................................................................45

8.5 Manual Control Mode..........................................................................................................................46

Selecting/deselecting Manual Control Mode ......................................................................................46

8.6 1400+ Controllers –Communications Parameters..............................................................................46

Bit Parameters ....................................................................................................................................46

Word Parameters................................................................................................................................47

SECTION 9: MANUALLY TUNING CONTROLLERS........................................................................53

9.1 Single Control Tuning (PID with Primary Output only) .......................................................................53

9.2 Dual Control Tuning (PID with Primary and Secondary Outputs) ......................................................54

9.3 Valve Control Tuning (PI with Linear Outputs) ...................................................................................54

9.4 Manually Fine Tuning..........................................................................................................................56

SECTION 10: MODBUS SERIAL COMMUNICATIONS....................................................................57

10.1 Physical Layer...................................................................................................................................57

10.2 Link Layer .........................................................................................................................................58

10.3 Device Addressing............................................................................................................................59

10.4 Supported Modbus Functions...........................................................................................................59

10.5 Function Descriptions .......................................................................................................................59

Read Coil/Input Status (Function 01 / 02) .......................................................................................... 60

Read Holding/Input Registers (Function 03 / 04) ............................................................................... 60

Force Single Coil (Function 05).......................................................................................................... 61

Pre-Set Single Register (Function 06)................................................................................................ 61

Loopback Diagnostic Test (Function 08)............................................................................................ 61

Pre-Set Multiple Registers (Function 10 Hex) ....................................................................................62

Exception Responses .........................................................................................................................62

SECTION 11: ASCII COMMUNICATIONS........................................................................................64

11.1 Physical Layer ..................................................................................................................................64

11.2 Device Addressing............................................................................................................................64

11.3 Session Layer...................................................................................................................................64

Type 1 Message..................................................................................................................................65

Type 2 Message..................................................................................................................................66

Type 3 Message..................................................................................................................................66

Type 4 Message..................................................................................................................................67

11.4 Error Response ................................................................................................................................67

SECTION 12: CALIBRATION MODE................................................................................................68

12.1 Equipment Required For Checking or Calibrating the Universal Input ............................................68

12.2 Calibration Check .............................................................................................................................68

12.3 Recalibration Procedure...................................................................................................................69

SECTION 13: APPENDIX 1 – GLOSSARY.......................................................................................70

SECTION 14: APPENDIX 2 – SPECIFICATION ...............................................................................93

14.1 Universal Input..................................................................................................................................93

General Input Specifications ...............................................................................................................93

Thermocouple......................................................................................................................................93

Thermocouple Ranges Available................................................................................................................93

Thermocouple Performance.......................................................................................................................94

Resistance Temperature Detector (RTD)............................................................................................94

RTD Ranges Available ...............................................................................................................................94

RTD Performance.......................................................................................................................................95

DC Linear ............................................................................................................................................95

DC Linear Ranges Available.......................................................................................................................95

DC Linear Performance..............................................................................................................................95

14.2 Auxiliary Inputs .................................................................................................................................96

14.3 Digital Inputs.....................................................................................................................................96

14.4 Output Specifications........................................................................................................................96

Output Module Types ..........................................................................................................................96

Specifications of Output Types............................................................................................................97

14.5 Control Specifications.......................................................................................................................99

14.6 Process Alarms ................................................................................................................................99

14.7 Digital Communications....................................................................................................................99

14.8 Reference Conditions.....................................................................................................................100

14.9 Operating Conditions......................................................................................................................100

14.10 Standards .....................................................................................................................................100

14.11 Physical Specifications.................................................................................................................100

SECTION 15: APPENDIX 3 – PRODUCT CODING........................................................................101

How to use this manual

This manual is structured to give easy access to the information required for all aspects of the installation and use and of the products:

Section 1: Section 2: Section 3: Section 4:

diagrams and input/output connections. Section 5: Section 6: Section 7:

include Select Mode for gaining access to the Setup and Configuration menus, Automatic tuning on controllers and the Product information menus.

Section 8: controllers. It covers the Configuration, Setup & Operator menus, Communications parameters, adjusting Setpoint, use of Manual Control and PID auto-tuning.

Section 9: Valve Controllers tuning parameters.

Introduction

Installation Plug-in Options Wiring Guidelines

Powering Up

- A brief description of the product range.

- Unpacking, installing and panel mounting instructions.

- Installation of the plug-in option modules.

- Guidance on good wiring practice, noise avoidance, wiring

- Powering up procedure and descriptions of displays & switches.

Messages & Error Indications Operation Modes

1400+ Model Group

- Describes operating modes common across the range. These

- Describes unique operating features of these process

Manually Tuning Controllers

- Display Messages and fault indications.

- Advice on manually adjusting the Process and

Section 10: formats used for the Modbus communications protocol common to all products in the range.

Section 11: used for the ASCII serial communications protocol available on some products.

Section 12: section is intended for use by suitably qualified personnel.

Appendix 1: Appendix 2: Appendix 3:

Modbus Serial Communications

ASCII Serial Communications

Calibration Mode

Glossary

- Explanations of the terms used and product features.

Specification Product Coding

- Step-by-step instructions to calibrate the instrument. This

- Technical specifications for all products in the range.

- Product model/ordering codes.

- Details the physical layer and message formats

- Details the physical layer and message

SECTION 1: INTRODUCTION

1.1 General

These instruments are microprocessor based process controllers. They can measure, display or control process variables such as temperature, pressure, flow and level from a variety of inputs.

The operating voltage is either 100-240V at 50/60 Hz or 24V-48V AC/DC depending on the model purchased. EEPROM technology protects against data or configuration loss during power outages.

Inputs are user configurable for connection to thermocouple and RTD probes, as well as linear process signal types such as mVDC, VDC or mADC. Output options include relays, SSR drivers, triacs or linear mV/voltage modules. These can be used for process control, valve control, alarms or retransmission of the process variable or setpoint to external devices such as data recorders or PLC’s. A Transmitter Power Supply option module can provide an unregulated 24V DC (22mA) auxiliary output voltage for external signal transmitters.

Alarm indication is standard on all instruments. Alarms may be set as process high or low, deviation (active above or below controller setpoint), band (active both above and below setpoint), or control loop types. These alarms can be linked to any suitable output. Alarm status is indicated by LED’s or the alarm status screen.

Controllers can be programmed for on-off, time proportioning, or current proportioning control implementations, depending on the output modules fitted, and feature manual or automatic tuning of the PID parameters. A secondary control output is available when additional output modules are fitted. Optional analogue controller Remote Setpoint inputs are included in the range. Control functions, alarm settings and other parameters are easily adjusted from the front keypad or via PC based configuration software.

SECTION 2: INSTALLATION

100mm (3.94”)

96mm (3.77”)

2.1 Unpacking

Remove the product from its packing. Retain the packing for future use, in case it is necessary

to transport the instrument to a different site or to return it to the supplier for repair/testing.

The instrument is supplied with a panel gasket and push fit fixing strap. A single sheet concise manual is also supplied in one or more languages. Examine the delivered items for damage or defects. If any are found, contact your supplier immediately.

2.2 Installation

CAUTION:

Installation and configuration should be performed only by personnel who are technically competent and authorised to do so. Local regulations regarding electrical installation and safety must be observed.

Main dimensions

96mm (3.77”)

90mm

+0.5

–

0.0

Hold firmly in position

Mounting Panel

Slide mounting clamp over the

90mm

+0.5

–

0.0

2.3 Panel Cut-outs

The mounting panel must be rigid and may be up to 6.0mm (0.25 inches) thick. The cut-outs required for the instruments are shown below.

(3.62” +.020 -.000)

Figure 2. Panel cut-out size

2.4 Panel-Mounting

CAUTION:

Ensure the inside of the panel is with the instruments operating temperature and that there is adequate air flow to prevent overheating.

instrument housing, towards rear face of

mounting panel, until the tongues

engage in ratchets and instrument is

Instrument Housing

Ratchets

clamped in position

CAUTION:

Do not remove the panel gasket, as this may result in inadequate clamping and sealing of the instrument to the panel.

Gasket

(apply pressure to bezel only)

Figure 3. Panel-Mounting the instrument

Once the instrument is installed in its mounting panel, it may be subsequently removed from it’s housing, if necessary, as described in the Fitting and Removing Option Modules section.

Instruments may be mounted side-by-side in a multiple installation, but instrument to panel moisture and dust sealing will be compromised. The cut-out width (for n instruments) is shown below.

/4 - DIN Instruments: (96n - 4) mm or (3.78n - 0.16) inches If panel sealing must be maintained, mount each instrument into an individual cut-out with 6mm or

more clearance between the edges of the holes.

Note:

The mounting clamp tongues may engage the ratchets either on the sides or the top/bottom faces of the Instrument housing. When installing several Instruments side-by-side in one cut-out, use the ratchets on the top/bottom faces.

SECTION 3: PLUG-IN OPTIONS

3.1 Options Modules and Functions

A range of plug-in option modules is available to add additional input, output and communication functions to the instruments in the range. These modules can be either pre-installed at the time of manufacture, or retrofitted in the field.

The modules are installed between the instruments main circuit boards into the four option slots. These are designated as Slots 1, 2, 3, A & B. Installation is detailed below.

Note:

Slot 1 modules cannot be fitted into Slot 2 or 3. Slot 2 & 3 modules cannot be fitted into Slot 1. Some Slot 2 &3 modules should only be fitted into one of the two slots. This is detailed in the Option Module vs. Model Matrix below.

PSU BOARD

CPU BOARD

Figure 4. Typical rear view (uncased) & main board positions

3.2 Auto Detection of Option Modules

The instrument automatically detects which option modules have been fitted into each slot. In

Configuration Mode

fitted. The modules fitted can be viewed in the products information menu, as detailed in the

Information Mode

, the menus will change to reflect the options compatible with the hardware

section of this manual.

Product

Table 1.

MODULE PART

NUMBER

& Function

PO1-C10

Relay

PO1-C50

SSR Driver

PO1-C80

Triac

PO1-C21

Linear mA/V DC

PO2-C10

Relay

PO2-C50

SSR Driver

PO2-C80

Triac

PO2-C21

Linear mA/V DC

PO2-W09

Dual Relay

Option Module Available

1400+

OPTION SLOT 1

OPTION SLOT 2

OPTION SLOT 3

PO2-C10

Relay

PO2-C50

SSR Driver

PO2-C21

Linear mA/V DC

PO2-W08

TransmitterPSU

PO2-W09

Dual Relay

OPTION SLOT A

PA1-W06

RS485 Comms

PA1-W03

Digital Input

PA1-W04

Basic Aux Input

OPTION SLOT B

PB1-W0R

Full Aux Input

SOFTWARE & ACCESSORIES

PS1-CON

Config Software

KEY

Option Possible Option Not Possible

3.3 Preparing to Install or Remove Options Modules

CAUTION:

Before removing the instrument from it’s housing, ensure that all power has been removed from the rear terminals.

1. Remove the instrument from its housing by gripping the side edges of the front panel (there is a finger grip on each edge) and pull the instrument forwards. This will release the instrument from the rear connectors in the housing and will give access to the PCBs.

2. Take note of the orientation of the instrument for subsequent replacement into the housing. The positions of the main and option PCBs in the instrument are shown below.

3.4 Removing/Replacing Option Modules

With the instrument removed from its housing:

1. To remove or replace modules into Option Slots 1,A or B, it is necessary to gently separate the from the front moulding by lifting first the upper and then lower mounting struts as shown. This frees the boards from the front. If only Option slots 2 or 3 are to be changed, this stage is not required as these slots are accessible without separating the main boards from the front.

CPU

and PSU PCBs. This is achieved by detaching the main boards (PSU and

Mounting Struts

CPU

Option Slot B

)

Option Slot 2

Option Slot 1

Option Slot A

Option Slot 3

Figure 5. Location of Option Modules - 1/4 DIN Instruments

Option Slot 2

Option Slot A

Option Sl

ot B

Connectors PL2A,

Option Slot 3

Option Slot 1

CAUTION:

Take care not to put undue stress on the ribbon cable attaching the display and CPU boards.

2. Remove or fit the modules into the Option slots as required. The location of the connectors is shown below. Tongues on each option module locate into a slots cut into the main boards, opposite each of the connectors.

PL2B & PL2C

Connector PL4A

Connectors PL7 & PL8

Connectors PL5 & PL6

CAUTION:

Check for correct orientation of the modules and that all pins locate correctly into the socket

Connectors PL4B

Figure 6. Option Module Connectors - 1/4 DIN Instruments

3.5 Replacing the Instrument in its Housing

With the required option modules correctly located into their respective positions the instrument can be replaced into its housing as follows:

1. If required, move the module tongues into the slots in the board opposite. Hold the main boards together while relocating them back into the mounting struts on the front panel.

2. Align the

Slowly and firmly, push the instrument in position.

CPU

and PSU PCBs with their guides and connectors in the housing.

CPU

and PSU boards back together, taking care to locate the option

CAUTION:

Ensure that the instrument is correctly orientated. A mechanical stop will operate if an attempt is made to insert the instrument in the wrong orientation, this stop MUST NOT be over-ridden.

SECTION 4: WIRING INSTRUCTIONS

Electrical noise is a phenomenon typical of industrial environments. As with any instrumentation, these guidelines should be followed to minimize the effect of noise.

4.1 Installation Considerations

Ignition transformers, arc welders, mechanical contact relays and solenoids are all common sources of electrical noise in an industrial environment and therefore the following guidelines MUST be followed.

1. If the instrument is being installed in existing equipment, the wiring in the area should be checked to ensure that good wiring practices have been followed.

2. Noise-generating devices such as those listed should be mounted in a separate enclosure. If this is not possible, separate them from the instrument, by the largest distance possible.

3. If possible, eliminate mechanical contact relays and replace with solid-state relays. If a mechanical relay being powered by an output of this instrument cannot be replaced, a solid state relay can be used to isolate the instrument.

4. A separate isolation transformer to feed only the instrumentation should be considered. The transformer can isolate the instrument from noise found on the AC power input.

4.2 AC Power Wiring - Neutral (for 100 to 240V AC versions)

It is good practice to ensure that the AC neutral is at or near ground (earth) potential. A proper neutral will help ensure maximum performance from the instrument.

4.3 Wire Isolation

Four voltage levels of input and output wiring may be used with the unit:

1. Analogue input or output (for example thermocouple, RTD, VDC, mVDC or mADC)

2. Relays & Triac outputs

3. SSR Driver outputs

4. AC power

CAUTION:

The only wires that should run together are those of the same category.

If any wires need to run parallel with any other lines, maintain a minimum space of 150mm between them.

If wires MUST cross each other, ensure they do so at 90 degrees to minimise interference.

4.4 Use of Shielded Cable

All analogue signals must use shielded cable. This will help eliminate electrical noise induction on the wires. Connection lead length must be kept as short as possible keeping the wires protected by the shielding. The shield should be grounded at one end only. The preferred grounding location is at the sensor, transmitter or transducer.

4.5 Noise Suppression at Source

Usually when good wiring practices are followed, no further noise protection is necessary. Sometimes in severe electrical environments, the amount of noise is so great that it has to be suppressed at source. Many manufacturers of relays, contactors etc supply 'surge suppressors' which mount on the noise source. For those devices that do not have surge suppressors supplied, Resistance-Capacitance (RC) networks and/or Metal Oxide Varistors (MOV) may be added.

Inductive coils:- MOVs are recommended for transient suppression in inductive coils, connected in parallel and as close as possible to the coil. Additional protection may be provided by adding an RC network across the MOV.

Figure 7. Transient suppression with inductive coils

Contacts:- Arcing may occur across contacts when they open and close. This results in electrical noise as well as damage to the contacts. Connecting a properly sized RC network can eliminate this arc.

For circuits up to 3 amps, a combination of a 47 ohm resistor and 0.1 microfarad capacitor (1000 volts) is recommended. For circuits from 3 to 5 amps, connect two of these in parallel.

Figure 8. Contact noise suppression

4.6 Sensor Placement (Thermocouple or RTD)

If the temperature probe is to be subjected to corrosive or abrasive conditions, it must be protected by an appropriate thermowell. The probe must be positioned to reflect true process temperature:

1. In a liquid media - the most agitated area

2. In air - the best circulated area

CAUTION:

The placement of probes into pipe work some distance from the heating vessel leads to transport delay, which results in poor control.

For a two wire RTD a wire link should be used in place of the third wire. Two wire RTDs must only be used with lead lengths less than 3 metres. Use of three wire RTDs is strongly recommended.

4.7 Thermocouple Wire Identification Chart

The different thermocouple types are identified by their wires colour, and where possible, the outer insulation as well. There are several standards in use throughout the world.

The table below shows the wire and sheath colours used for most common thermocouple types. The format used in this table is:

Table 2.

Type International

IEC584-3

Black White Yellow Yellow Red

R & S

White

Brown Blue White Yellow Red

White

Green Yellow Brown Yellow Red

White

Pink Orange Orange

White

Grey Grey Red

White

Orange Black White Yellow Red

White

Black

Brown

Green

Pink

Grey

Orange

Thermocouple Extension Wire Colours

USA ANSI

MC 96.1

Black

Red

Blue

Red

Yellow

Red

Orange

Red

Grey

Red

Green

Red

British

BS1843

Blue

NFC 42-324

Black

Blue

Red

Purple

Orange

Green

Wire

French

Black

Blue

Yellow

Green

Sheath

German

DIN 43710

Blue

Brown

Green

Grey

White

C (W5)

White

Red

Note:

* = Wire is magnetic

4.8 Connections and Wiring

The rear terminal connections for In general, all wiring connections are made to the instrument after it is installed. Copper wires must

be used for all connections (except thermocouple signal wires).

WARNING:

TO AVOID ELECTRICAL SHOCK, AC POWER WIRING MUST NOT BE CONNECTED TO THE SOURCE DISTRIBUTION PANEL UNTIL ALL WIRING PROCEDURES ARE COMPLETED.

1/4 DIN

instruments are illustrated in the following diagram.

WARNING: CHECK THE INFORMATION LABEL ON THE CASE TO DETERMINE THE CORRECT

VOLTAGE BEFORE CONNECTING TO A LIVE SUPPLY.

Note:

The wiring diagram below shows all possible combinations. The actual connections required depend upon the features available on the model and the modules and options fitted.

Figure 9. Rear terminals (1/4-DIN Instruments)

∼

4.9 Power Connections - Mains Powered Instruments

Mains powered instruments operate from a 100 to 240V (±10%) 50/60Hz supply. Power consumption is 7.5VA. Connect the line voltage (live and neutral) as illustrated via a two-pole isolating switch (preferably located near the equipment) and a 1amp anti-surge fuse. If the instrument has relay outputs with contacts carrying mains voltage, it is recommended that the relay contacts supply should be switched and fused in a similar manner, but should be separate from the instruments mains supply.

WARNING:

CHECK THE INFORMATION LABEL ON THE CASE TO DETERMINE THE CORRECT VOLTAGE BEFORE CONNECTING TO A LIVE SUPPLY.

CAUTION:

This equipment is designed for installation in an enclosure that provides adequate protection against electric shock

Figure 10. Mains Power Connections

4.10 Power Connections - 24/48V AC/DC Powered Instruments

24/48V AD/DC powered instruments will operate from a 20 to 48V AC or 22 to 55V DC supply. AC power consumption is 7.5VA max, DC power consumption is 5 watts max. Connection should be via a two-pole isolating switch (preferably located near the equipment) and a 315mA slow-blow (antisurge type T) fuse.

Figure 11. 24/48V AC/DC Power Connections

WARNING:

CHECK THE INFORMATION LABEL ON THE CASE TO DETERMINE THE CORRECT VOLTAGE BEFORE CONNECTING TO A LIVE SUPPLY.

4.11 Universal Input Connections - Thermocouple (T/C)

Use only the correct thermocouple wire or compensating cable from the probe to the instrument terminals avoiding joints in the cable if possible. Failure to use the correct wire type will lead to inaccurate readings. Ensure correct polarity of the wires by cross-referencing the colours with a

thermocouple reference table

Figure 12. Thermocouple Input Connections

4.12 Universal Input Connections – PT100 (RTD) input

For three wire RTDs, connect the resistive leg and the common legs of the RTD as illustrated. For a two wire RTD a wire link should be used in place of the third wire (shown by dotted line). Two wire RTDs should only be used when the leads are less than 3 metres long. Avoid cable joints.

RTD

Figure 13. RTD Input Connections

Four wire RTDs can be used, provided that the fourth wire is left unconnected. This wire should be cut short or tied back so that it cannot contact any of the terminals on the rear of the instrument.

4.13 Universal Input Connections - Linear Volt, mV or mA input

Linear DC voltage, millivolt or milliamp input connections are made as illustrated. Carefully observe the polarity of the connections.

Figure 14. DC Volt, mV & mA Input Connections

mV/V

4.14 Option Slot 1

Relay Output Module

If option slot 1 is fitted with a relay output module, make connections as illustrated. The relay contacts are rated at 2 amps resistive, 240 VAC (120V max for direct

Valve Motor control

Figure 15. Option Slot 1 – Relay Module Connections

N/C

COM

N/O

Option Slot 1 - SSR Driver Output Module

∼

If option slot 1 is fitted with an state relay driver is a 0-10V DC signal, load impedance must be no less than 500 ohms. SSR driver outputs are not isolated from the signal input or other SSR driver outputs.

SSR

driver output module, make connections as illustrated. The solid-

Figure 16. Option Slot 1 - SSR Driver Module Connections

Option Slot 1 - Triac Output Module

If option slot 1 is fitted with a Triac output module, make connections as shown. This output is rated at 0.01 to 1 amp @ 280V AC 50/60Hz. (140V max for direct Valve Motor control).

Figure 17. Option Slot 1 - Triac Module Connections

Option Slot 1 - Linear Voltage or mADC Output module

If option slot 1 is fitted with a DC linear output module, make connections as illustrated.

Figure 18. Option Slot 1 - Linear Voltage & mADC Module Connections

∼

4.15 Option Slot 2

Option Slot 2 - Relay Output Module

If option slot 2 is fitted with a relay output module, make connections as illustrated. The relay contacts are rated at 2 amps resistive, 240 VAC (120V max for direct Valve Motor control).

N/C

COM

N/O

Figure 19. Option Slot 2 - Relay Module Connections

Option Slot 2 - SSR Driver Output Module

If option slot 2 is fitted with an state relay driver is a 0-10V DC signal, load impedance must be no less than 500 ohms. SSR driver outputs are not isolated from the signal input or other SSR driver outputs.

SSR

driver output module, make connections as illustrated. The solid-

Figure 20. Option Slot 2 - SSR Driver Module Connections

Option Slot 2 - Triac Output Module

If option slot 2 is fitted with a Triac output module, make connections as shown. This output is rated at 0.01 to 1 amp @ 280V AC 50/60Hz. (140V max for direct Valve Motor control).

Figure 21. Option Slot 2 - Triac Module Connections

WARNING:

THIS MODULE MUST NOT BE FITTED INTO OPTION SLOT 3.

Option Slot 2 - Linear Voltage or mADC Output module

If option slot 2 is fitted with a DC linear output module, make connections as illustrated.

Figure 22. Option Slot 2 - Linear Voltage & mADC module Connections

4.16 Option Slot 3

Option Slot 3 - Relay Output Module

If option slot 3 is fitted with a relay output module, make connections as illustrated. The relay contacts are rated at 2 amps resistive, 240 VAC (120V max for direct Valve Motor control).

N/C

COM

Figure 23. Option Slot 3 - Relay Module Connections

N/O

Option Slot 3 - SSR Driver Output Module

If option slot 3 is fitted with an state relay driver is a 0-10V DC signal; load impedance must be no less than 500 ohms. SSR driver outputs are not isolated from the signal input or other SSR driver outputs.

SSR

driver output module, make connections as illustrated. The solid-

Figure 24. Option Slot 3 - SSR Driver Module Connections

Option Slot 3 - Linear Voltage or mADC Output module

If option slot 3 is fitted with a DC linear output module, make connections as illustrated.

Figure 25. Option Slot 3 - Linear Voltage & mADC Module Connections

Option Slot 3 - Transmitter Power Supply Module

If option slot 3 is fitted with a transmitter power supply module, make connections as illustrated. The output is an unregulated 24V DC, 22mA supply.

Figure 26. Option Slot 3 - Transmitter Power Supply Module Connections

WARNING:

THIS MODULE MUST NOT BE FITTED INTO OPTION SLOT 2.

4.17 Option Slot A

Option Slot A Connections - RS485 Serial Communications Module

If option slot A is fitted with the RS485 serial communication module, connections are as illustrated. Carefully observe the polarity of the A (Rx/Tx +ve) and B (Rx/Tx -ve) connections.

Figure 27. Option Slot A – RS485 Serial Communications Module Connections

RS485

COM

Option Slot A Connections - Digital Input Module

If a digital input module is fitted in option slot A, this may be connected to either voltage free contacts (e.g. switch or relay), or a TTL compatible voltage. Connections are shown below.

Figure 28. Option Slot A – Digital Input Module Connections

Option Slot A Connections – Basic Auxiliary Input Module

If option slot A is fitted with a basic auxiliary input module, connect as shown. For 1/4-DIN & 1/8-DIN models it is recommend that the full auxiliary input (Option Slot B) is used instead, as this has additional features and leaves option slot A free for other modules.

Figure 29. Option Slot A – Basic Auxiliary Input Module Connections

WARNING:

THIS MODULE MUST NOT BE FITTED IF FULL AUXILIARY INPUT IS FITTED IN OPTION SLOT B.

∼

4.18 Option Slot B

Option Slot B Connections – Heater Current Input Module

If the heater current measurement feature is available, connections from the secondary winding of the current transformer are as illustrated below.

CT Secondary

Figure 30. Option Slot B – Heater Current Input Connections

Option Slot B Connections – Digital Input 2 (Full Auxiliary Module)

If option slot B is fitted with the Full Auxiliary input module (see below), a secondary digital input is also provided. This may be connected to either the voltage free contacts of a switch or relay, or a TTL compatible voltage.

Figure 31. Option Slot B – Digital Input 2 Connections

Option Slot B Connections – 1/4 DIN Full Auxiliary Input Module

If option slot B is fitted with full auxiliary input feature, input connections are as shown.

Figure 32. Option Slot B – Full Auxiliary Input Connections

WARNING:

IF THE FULL AUXILIARY MODULE HAS BEEN FITTED, THE BASIC AUXILIARY INPUT MUST NOT BE FITTED INTO OPTION SLOT A.

(or Pot Low)

(or Pot Wiper)

(or Pot High)

SECTION 5: POWERING UP

WARNING:

ENSURE SAFE WIRING PRACTICES ARE FOLLOWED

The instrument must be powered from a supply according to the wiring label on the side of the unit. The supply will be either 100 to 240V AC, or 24/48V AC/DC powered. Check carefully the supply voltage and connections before applying power.

CAUTION:

When powering up for the first time, disconnect the output connections.

5.1 Powering Up Procedure

At power up, a self-test procedure is automatically started, during which all indicators are lit. At the first power up from new, or if the option modules are changed, Goto ConF will be displayed, indicating configuration is required (refer to times, the instrument returns to operator mode once the self-test procedure is complete.

LED

segments and

section 6

). At all other

5.2 Overview of Front Panel

The illustration below shows a typical instrument front panel. Refer to the following table

LED functions

for a description of the front panel indicators.

– Typical

Figure 33. Front panel and keys

5.3 Displays

Controllers are provided with a dual line display and

LED

indicators for mode, automatic tune, alarm and output status. The upper display shows the process variable value during normal operation, while the lower display shows the Setpoint value. See the preceding diagram - Typical front panel and keys.

5.4 Keypad

Each instrument in the range has four switches, which are used to navigate through the user menus and make adjustment to the parameter values. See the preceding diagram - Typical front panel and keys

5.5 LED Functions

LED

Table 3.

ON indicates the Setup Mode has been entered (This LED is labelled SET on indicator models)

FLASHING indicates the manual mode has been entered (On indicator models this LED is labelled SET and flashes when in Configuration Mode )

Typical LED functions

Function

ON indicates that Controller

FLASHING indicates that Controller

FLASHING indicates that an alarm condition is present

FLASHES in unison with Time Proportioning Primary outputs, or turns ON with Valve Motor “Open” outputs.

For Current Proportioned outputs, ON indicates primary power is >0% It turns ON when the stored Max. PV value is displayed on indicators

FLASHES in unison with Time Proportioning Secondary outputs, or turns ON with Valve Motor “Close” outputs.

For Current Proportioned outputs, ON secondary power is >0% It turns ON when the stored Min. PV value is displayed on indicators

Self Tune

Pre-Tune

mode is engaged

SECTION 6: MESSAGES AND ERROR INDICATIONS

The following displays are shown when an error occurs or a hardware change is detected.

Table 4.

Error/Faults conditions

Error/Faults Conditions Upper display Lower Display

(where fitted)

Configuration & Setup is required. Seen at first turn on or if hardware configuration changed. Press to enter Configuration Mode, next press or to enter the unlock code number, then press to proceed.

Configuration must be completed before return to operator mode is allowed 1

Input more than 5% over-range2 Input more than 5% under-range3 Sensor Break. Break detected in

the input sensor or wiring Auxiliary input over-range

Goto

[HH]

[LL]

OPEN

Normal Display

ConF

Normal Display Normal Display Normal Display

[HH]

Auxiliary input under-range Auxiliary Break. Break detected in

Normal Display Normal Display

[LL]

OPEN

the auxiliary input Option 1 module fault. Option 2 module fault. Option 3 module fault. Option A module fault. Option B module fault.

Err

Opn1

Opn2

Opn3

OpnA

Err Opnb

* Note

Input sensor and Auxiliary over/under-range or break indications will be seen wherever these values would normally be displayed.

This feature does not guarantee correct configuration. It only helps to ensure that the unit will be configured

before use. Use of set-up mode is not enforced but may be essential for the users application.

If the PV display exceeds

Indicators will allow up to 10% under-range on non-zero based Linear ranges. If the PV display is less than

−1999

before the % under-range is reached, an under-range indication is given.

9999

before 5% over-range is reached, an over-range indication is given.

SECTION 7: INSTRUMENT OPERATION MODES

7.1 Select Mode

This mode is used to gain entry to each of the modes available in the instrument.

Entry into the Select Mode

Hold down and press in any mode to force the unit to enter Select Mode.

Navigating in Select Mode

Once in Select Mode, press or to select the required mode, then press to enter the chosen mode.

To prevent unauthorised entry to Configuration, Setup and Automatic Tuning modes, an unlock code is required. These are shown in the

- Lock code values

table.

Table 5.

Mode Description Upper/Main

Operator Mode

Set Up Mode

Configuration Mode

Product Information Mode

Automatic Tune Mode

The Default Mode on power up used for normal operation.

Used to tailor the instrument to the application, adjustment of tuning terms etc.

Used to configure the instrument for first time use or on re-installation.

Used to check the hardware, firmware and manufacturing information of the instrument.

Used to invoke

self-tune

on controllers

Select Mode Menus

pre-tune

Lower

Display

OPtr SLCt

SEtP SLCt

ConF SLCt

inFo SLCt

Atun SLCt

Display

Unlock Codes

The ULoc screen is seen before entry is allowed to Configuration, Setup and Automatic Tuning modes.

An unlock code must be correctly selected using the or keys to enter the required mode. An incorrect entry results in a return to Select Mode. The value of the lock codes only can be changed from within the modes that they apply to.

Table 6.

Description Upper/Main

Lock Code – Entry and Default Values

Lower Display

Display

Default values are: Automatic Tune Mode =

Set-up

mode =

1010

Configuration Mode =

0000

2020

0 ULoc

7.2 Automatic Tune Mode

Automatic Tune Mode is selected when it is desired to use the controller to assist the user in setting up Proportional band, Integral and Derivative parameter values. Refer to the following

Pre-tune can be used to set Controller to optimise the tuning. Pre-Tune APt parameter in Setup Mode.

Pre-tune

Automatic Tune Mode

PID

parameters approximately.

can be set to run automatically after every power-up using the Auto

table.

Pre-tune

and

Self-tune

facilities on a

may then be used

The AT indicator will flash while pre-tune is operating, and is continuously on while Selftune is operating. If both Pre-tune and Self-tune are engaged the AT indicator will flash until Pretune is finished, and is then continuously on.

Navigating in Automatic Tune Mode

Press to select the next parameter in the table and or to set the value required. Hold down and press to return to Select Mode.

Note:

If there is no key activity for 2 minutes the controller automatically returns to operator mode

Table 7.

Parameter Upper Display

Adjustment Range

OFF

Pre-tune

Self-tune

Automatic tune mode lock code

Indication remains cannot be used at this time. This applies if:

a). The setpoint is ramping b). The process variable is less than

5% of span from the setpoint c). The primary or secondary output

proportional bands = 0

or Indication remains cannot be used at this time. This applies if either proportional band = 0.

0 to 9999

7.3 Product Information Mode

Automatic Tune Mode Parameters

Lower

Display

Ptun OFF

if Pre-Tune

Stun OFF

if Self-Tune

tLoc 0

Default

Value

When

Visible

Controller

models only

Controller

models only

Controller

models only

This is a read only mode describing the instrument and the options fitted to it.

Navigating in the Product Information Mode

Press to view each parameter in turn. Hold Down and press to return to

Select Mode

Note:

If there is no key activity for 2 minutes the controller automatically returns to operator mode

Table 8.

Parameter Possible Values Upper/Main

Input type Universal input Option 1

module type

No option fitted Relay SSR drive

Product Information Mode Parameters

Display

Uni In_1

nonE

rLY

SSr

Lower

Display

OPn1

Triac Linear voltage / current output

tri

Lin

Parameter Possible Values Upper/Main

Display

Option 2 module type

No option fitted. Relay

nonE

rLy

Lower

Display

OPn2

Option 3 module type

Auxiliary option A module type

Auxiliary option B module type

Firmware

Dual relay SSR drive Triac Linear voltage / current output No option fitted. Relay Dual relay SSR drive Linear voltage / current output 24V Transmitter power supply No option fitted RS485 comms Digital input Basic Auxiliary input

No option fitted Full Auxiliary input and

digital input 2 Value displayed is firmware type number

drLy

SSr

Lin

nonE

drLy

rLy

SSr

Lin

dc24

none

r485

diGi

RSPi

none

RSPi

tri

OPn3

OPnA

OPnb

FUU

Issue No. Product Rev

Level Date of

manufacture Serial

number 1 Serial

number 2 Serial

number 3

Value displayed is firmware issue number Value displayed is Product Revision Level.

Manufacturing date code (mmyy)

First four digits of serial number

Second four digits of serial number

Last four digits of serial number

ISS

PrL

Sn1

Sn2

Sn3

7.4 Lock Code View

In the event that a lock code is forgotten, the instrument lock code values can be seen in the lock code view. In this view the codes are read only, the codes can be changed from the mode to which they apply.

Entry and Navigating in Lock Code View Mode

Press and

together while the instrument is powering up until the CLoc display is

shown. Once in this mode Press

to step between lock codes.

Note:

If there is no key activity for 2 minutes the instrument returns to Operator Mode. To forcefully exit this view, switch off the instrument.

Lock Code Name

Configuration Lock Code

Setup Lock Code

Automatic Tune Lock Code

Table 9.

Description Upper/Main

Read only view of Configuration Lock Code.

Read only view of Setup Mode Lock Code.

Read only view of Automatic Tune Lock Code.

Lock Code View Menu

Display

Current Value

Lower Display

CLoc

SLoc

tLoc

*Note:

On Indicators (which have a single line display), this legend is shown for approx 1 second before the Main display value.

SECTION 8: 1400+ CONTROLLER – MODEL GROUP

These controllers combine technical functionality, field flexibility and ease of use to give you the best in comprehensive process control.

Heat/Cool operation Auto/Manual Tuning Remote or Dual setpoint selection options Two process alarms RS485 Modbus and ASCII comms option Ramping setpoint PC configuration option

Loop alarm

8.1 1400+ Controllers - Configuration Mode

This mode is normally used only when the instrument is configured for the first time or when a major change is made to the instruments characteristics. The Configuration Mode parameters must be set as required before adjusting parameters in Setup Mode, or attempting to use the instrument in an application.

Entry into the Configuration Mode

CAUTION:

Adjustments to these parameters should only be performed by personnel competent and authorised to do so.

Configuration is entered from

Hold down and press to force the controller into the Select Mode. then Press or to navigate to the Configuration Mode option, then press .

Select Mode

Note:

Entry into this mode is security-protected by the Configuration Mode Lock Code. Refer to the Unlock Code section for more details.

Scrolling through Parameters and Values

Press to scroll through the parameters (parameters are described below).

Note:

Only parameters that are applicable to the hardware options chosen will be displayed.

Changing Parameter Values

Press to navigate to the required parameter, then press or to set the value as required.

Once the value is changed, the display will flash to indicate that confirmation of the change is required. The value will revert back if not confirmed within 10 seconds.

Press to accept the change. Or Press to reject the change and to move onto the next parameter.

Hold down and press to return to Select Mode.

Note:

If there is no key activity for 2 minutes the instrument returns to the operator mode.

Parameter Lower

Display

Input type and Range

InPt

Table 10.

Upper Display

1400+ Configuration Mode Parameters

Description Default

B type: 100 to 1824 ºC B type: 211 to 3315 ºF C type: 0 to 2320 ºC C type: 32 to 4208 ºF J type: -200 to 1200 ºC J type: -328 to 2192 ºF J type: -128.8 to 537.7 ºC

with decimal point J type: -199.9 to 999.9 ºF

with decimal point K type: -240 to 1373 ºC K type: -400 to 2503 ºF K type: -128.8 to 537.7 ºC

with decimal point K type: -199.9 to 999.9 ºF

with decimal point L type: 0 to 762 ºC

Value

for Europe

for USA

When Visible

Always

L type: 32 to 1403 ºF L type: 0.0 to 537.7 ºC

with decimal point

Parameter Lower

Display

Upper Display

Description Default

Value

L type: 32.0 to 999.9 ºF with decimal point

When Visible

Parameter Lower

Display

Input type and Range (continued)

Upper Display

t.C

t.F

P24C

P24F

PTC

Description Default

Value

N type: 0 to 1399 ºC N type: 32 to 2551 ºF R type: 0 to 1759 ºC R type: 32 to 3198 ºF S type: 0 to 1762 ºC S type: 32 to 3204 ºF T type: -240 to 400 ºC T type: -400 to 752 ºF T type: -128.8 to 400.0 ºC

with decimal point T type: -199.9 to 752.0 ºF

with decimal point PtRh20% vs PtRh40%:

0 to 1850 ºC PtRh20% vs PtRh40%:

32 to 3362 ºF Pt100: -199 to 800 ºC

for Europe

for USA

When Visible

Always

PtF

0_20

4_20

0_50

0_5

1_5

0_10

Pt100: -328 to 1472 ºF Pt100: -128.8 to 537.7 ºC

with decimal point Pt100: -199.9 to 999.9 ºF

with decimal point 0 to 20mA DC

4 to 20mA DC 0 to 50mV DC 10 to 50mV DC

0 to 5V DC 1 to 5V DC 0 to 10V DC

Parameter Lower

Display

Scale Range Upper Limit

Scale Range Lower Limit

Decimal point position

Control Type

ruL

rLL

dPoS

CtYP

Upper

Description Default

Display

2_10

Scale Range Lower Limit +100 to Range Max

Range Min. to Scale range Upper Limit 100

SnGL

duAL

2 to 10V DC

Decimal point position in non-temperature ranges. 0 = XXXX 1 = XXX.X 2 = XX.XX 3 = X.XXX

Primary control Primary and Secondary

control (e.g. for heat & cool)

Value

Linear inputs = 1000 (°C/°F inputs = max range)

Linear = 0 (°C/°F = min range)

SnGL

When Visible

Always

Inpt

V or mA

Always

= mV,

Primary Output Control Action

Alarm 1Type

Process High Alarm 1 value*

Process Low Alarm 1 value*

Deviation Alarm 1 Value*

Band Alarm 1 value*

Alarm 1 Hysteresis*

Alarm 2 Type

CtRL

ALA1

PhA1

PLA1

dAL1

bAL1

AHY1

ALA2

reu

dir

P_Hi

P_Lo

bAnd

nonE

Range Min. to Range Max.

Parameter repeated in Setup Mode Range Min. to Range Max

Parameter repeated in Setup Mode ±span from setpoint

Parameter repeated in Setup Mode

1 LSD to full span from setpoint. Parameter repeated in Setup Mode

1 LSD to 100% of span (in display units) on “safe” side of alarm point. Parameter repeated in Setup Mode

As for alarm 1 type

Reverse Acting Direct Acting Process High Alarm Process Low Alarm Deviation Alarm Band Alarm No alarm

reu

P_Hi

Range

Max.

Range

Min.

P_Lo

Always

ALA1 = P_Hi

ALA1 = P_Lo

ALA1 = dE ALA1 = bAnd

Always

Process High Alarm 2 value*

PhA2

Range Min. to Range Max.

Parameter repeated in Setup Mode

Range

Max.

ALA2 = P_Hi

Parameter Lower

Display

Process Low Alarm 2 value*

Deviation Alarm 2 Value*

Band Alarm 2 value*

Alarm 2 Hysteresis*

Loop Alarm Enable

Loop Alarm Time*

PLA2

dAL2

bAL2

AHY2

LAEn

LATi

Upper

Description Default

Display

Range Min. to Range Max. Parameter repeated in Setup Mode

±span from setpoint. Parameter repeated in Setup Mode

1 LSD to full span from setpoint. Parameter repeated in Setup Mode

1 LSD to 100% of span (in display units) on “safe” side of alarm point. Parameter repeated in Setup Mode

disA (disabled) or EnAb (enabled)

1 sec to 99 mins. 59secs Only applies if primary proportional band = 0

Value

Range

Min.

disA

When Visible

ALA2 = P_Lo

ALA2 = dE ALA2

And

Always

LAEn = EnAb

Alarm Inhibit

Output 1 Usage

Inhi

USE1

none

ALA1

ALA2

both

Pri

Sec

Al_d

A1_r

A2_d

A2_r

LP_d

LP_r

Or_d

Or_r

No alarms Inhibited Alarm 1 inhibited Alarm 2 inhibited Alarm 1 and alarm 2

inhibited Primary Power

Secondary Power Alarm 1, Direct Acting

Alarm 1, Reverse Acting Alarm 2, Direct Acting Alarm 2, Reverse Acting Loop Alarm, Direct Acting Loop Alarm, Reverse Acting Logical Alarm 1 OR Alarm 2

Direct Acting Logical Alarm 1 OR Alarm 2

Reverse Acting

none

Pri

Always

Opn1

is not

none

Not linear Not linear Not linear Not linear Not linear Not linear

Not linear

Ar_d

Ar_r

retS

retP

Linear Output

tYP1 0_5

Logical Alarm 1 AND Alarm 2, Direct Acting

Logical Alarm 1 AND Alarm 2, Reverse Acting

Retransmit SP Output Retransmit PV Output 0 to 5 V DC output 1

0_10

Not linear

Not linear Linear only

Linear only

Opn1 =

Parameter Lower

Display

1 Range

Retransmit Output 1 Scale maximum

Retransmit Output 1 Scale minimum

Output 2 Usage

Linear Output 2 Range

Retransmit Output 2 Scale maximum

ro1H

ro1L

USE2

tYP2

ro2H

Upper

Description Default

Display

0_10

2_10

0_20

4_20

−1999

−1999−1999

Display value at which output will be maximum

−1999

−1999 to 9999

−1999−1999

Display value at which output will be minimum

As for output 1

−1999

−1999−1999

Display value at which output will be maximum

0 to 10 V DC output 2 to 10 V DC output 0 to 20 mA DC output 4 to 20 mA DC output

9999

99999999

9999

99999999

9999

99999999

Value

Range max

Range min

Sec

if dual control selected else

A2_d

0_10

0_100_10

Range max

When Visible

Lin

Use1 = retS

retP Use1

retS retP

Opn2

is not

none

Opn2 Lin

Use2 retS retP

Retransmit Output 2 Scale minimum

Output 3 Usage

Linear Output 3 Range

Retransmit Output 3 Scale maximum

Retransmit Output 3 Scale minimum

Display Strategy

Comms Protocol

ro2L

USE3

tYP3

ro3H

ro3L

disp

Prot

−1999

−1999 to 9999

−1999−1999

Display value at which output will be minimum

As for output 1

−1999

−1999−1999

Display value at which output will be maximum

−1999

−1999 to 9999

−1999−1999

Display value at which output will be minimum

1111, 2

2, 3

2 2

(see Operator Mode)

ASCI

MbE

3, 4

4, 5

3 3

4 4

Mbn

Mbo

9999

99999999

9999

99999999

9999

99999999

5 or 6666

5 5

ASCII Modbus with no parity

Modbus with Even Parity Modbus with Odd Parity

Range min

Use2 retS retP

Al_d

Opn3

is not

none

0_10

0_100_10

Opn3 Lin

Range max

Use3 retS retP

Range min

Use3 = retS retP

1111

Always

Mbn OpnA = r

485

Parameter Lower

Display

Bit rate

bAud

Upper Display

1111

2222

4444

Description Default

Value

1.2 kbps

2.4 kbps

4444

8888

When Visible

OpnA = r 485

Communications Address

Communications Write Enable

Digital Input 1 Usage

Digital Input 2 Usage

Addr

CoEn

diGi

diG2

4444

9999

1919

1111

r_ W

diS1

diAs

diS1

diAs

8888 6666

2222

r_ o

4.8 kbps

9.6 kbps

19.2 kbps Unique address assigned to

the instrument in the range of 1 to 255 (Modbus), 1 to 99 (Ascii)

Read only. Comms writes ignored

Read / Write. Writing via Comms is possible

Setpoint 1 / Setpoint 2 Select**

Automatic / Manual Select**

Setpoint 1 / Setpoint 2 Select**

Automatic / Manual Select**

r_ W

diS1

dirS

1111

OpnA = r485

Always

OpnA = diGi

Opnb = rSPi

Remote Setpoint Input Range

Remote Setpoint Upper Limit

Remote Setpoint Lower Limit

rinP

rSPu

rSPL

dirs

0_20

0_200_20 4_20

4_20

4_204_20 0_10

0_10

0_100_10 2_10

2_10

2_102_10

0_5

0_50_5

1_5

1_51_5

100

100100

Pot

−1999

−1999 to 9999

−1999−1999

RSP value to be used when RSP input is at maximum.

−1999

−1999 to 9999

−1999−1999

RSP value to be used when RSP input is at minimum.

9999

99999999

9999

99999999

Remote / Local Setpoint Select

0 to 20mA DC input 4 to 20mA DC input 0 to 10V DC input 2 to 10V DC input 0 to 5V DC input 1 to 5V DC input 0 to 100mV DC input Potentiometer (≥2KΩ)

0_10

Range max

Range min

OpnA

Opnb =

rSPi

Opnb = rSPi

OpnA = rSPi

Parameter Lower

Display

Remote Setpoint Offset

Configuration Mode Lock

Code

rSPo

CLoc

Upper

Description Default

Display

Offset applied to RSP value. Constrained within Scale Range Upper Limit and Scale Range Lower Limit.

0000

 to

9999

99999999

Value

When Visible

OpnA = rSPi

Always

*Note:

Alarm parameters marked * are repeated in Setup Mode.

**Note:

diGi

diG2 = diS1

the remote setpoint input feature is disabled. The instrument uses the two internal setpoints (SP1 & SP2) instead. If

diGi

and

diG2

are set to the same value, the status of digital input 2 will take precedence

over digital input 1.

8.2 1400+ – Setup Mode

This mode is normally selected only after when a change to the process set up is required. It can affect the range of adjustments available in

Operator Mode

. Using the PC Configurator software, it is possible to configure an Extended Operator Mode. Setup Mode parameters are moved into Operator Mode, and these parameters appear after the normal Operator Mode screen sequence has been completed.

Configuration Mode

has been completed, and is used

Note:

Entry into Setup Mode is security-protected by the Setup Mode lock code.

Entry into the Setup Mode

Hold down and press to enter the Select Mode Press or to navigate to the Setup Mode option, then press to enter Setup

Mode.

Scrolling through Parameters & Values

Press to scroll through the parameters (refer to the table below) and their values.

Changing Parameter Values

Press to select the required parameter, then press or to set the value as required.

Once the displayed value is changed the effect is immediate. No confirmation of the change is required.

Note:

If there is no key activity for two minutes the instrument returns to the operator mode.

Table 11.

1400+ Set Up Mode Parameters

Parameter Lower

Display

Input Filter Time constant

Process Variable Offset Primary Power

Secondary Power

Primary Output Proportional Band

Secondary Output Proportional Band

Automatic Reset (Integral Time Constant)

Rate (Derivative Time Constant)

Overlap/Deadband

Manual Reset (Bias)

Primary Output ON/OFF Differential

Secondary Output ON/OFF Differential

Primary and Secondary Output ON/OFF Differential

Setpoint Upper Limit

FiLt

OFFS

PPW

SPW

Pb_P

Pb_S

Arst

rATE

biAS

diFP

diFS

diFF

SPuL

Upper Display

Adjustment Range

OFF, 0.5 to 100.0 secs in

0.5 sec increments ±Span of controller

The current Primary Output Power. Read Only.

The current Secondary Output power. Read Only.

0.0% (ON/OFF control) and 0.5% to 999.9% of input span.

0.01 to 99.59 (1 sec to 99 mins 59 secs) and OFF

0.00 to 99.59 (OFF to 99 mins 59 secs)

-20% to +20% of the sum of the Primary and Secondary Proportional Bands

0% to 100% (-100% to 100% if

0.1% to 10.0% of input span (enter in % span)

Current Setpoint value to Scale Range Maximum

Ctyp

duAL

)

Default

Value

2222

0000

N/A

0000

1010

0000

1010

5555

0000

1111

1515

0000

2525

0000

5555

0000

5555

0000

5555

Range

Max.

When Visible

Always

Always Always

Ctyp

Always

Ctyp

Pb_P

is not

0000

Pb_P

is not

0000

Pb_P

is not

0000.0000

Pb_P

is not

0000

Pb_P

Pb_S

Pb_P

and

Pb_S

Always

duAL

0000

Setpoint Lower limit

Primary (Heat) Output Upper Power Limit

Output 1 Cycle Time

SPLL

OPuL

CT1

Scale Range Minimum to current Setpoint value

0% to 100% of full power

0.5, 1, 2, 4, 8, 16, 32, 64, 128, 256 or 512 secs. Not applicable to linear outputs

Range Min Always

Pb_P

is not

USE1

0000

100

100100

3232

= Pri

Sec

bus

0000

Parameter Lower

Display

Output 2 Cycle Time

Output 3 Cycle Time

Process High Alarm 1 value*

Process Low Alarm 1 value*

Deviation Alarm 1 Value*

Band Alarm 1 value*

Alarm 1 Hysteresis*

CT2

CT3

PhA1

PLA1

dAL1

bAL1

AHY1

Upper Display

Adjustment Range

0.5, 1, 2, 4, 8, 16, 32, 64, 128, 256 or 512 secs. Not applicable to linear outputs

Range Min. to Range Max.

±span from setpoint

1 LSD to full span from setpoint.

Up to 100% of span

Default

Value

3232

Range

Max.

Range

Min.

5555

1111

When Visible

USE2 = Pri

Sec

bus USE3 = Pri

Sec

bus ALA1 = P_Hi

ALA1

Always

P_Lo

= dE

bAnd

Process High Alarm 2 value*

Process Low Alarm 2 value*

Deviation Alarm 2 Value

Band Alarm 2 value*

Alarm 2 Hysteresis* Loop Alarm Time*

Auto Pre-tune enable / disable

Manual Control select enable / disable

Setpoint Select shown in Operator Mode, enable / disable

PhA2

PLA2

dAL2

bAL2

AHY2

LATi

APT

PoEn

SSEn

Range Min. to Range Max.

±span from setpoint

1 LSD to full span from setpoint.

Up to 100% of span 1 sec to 99 mins. 59secs.

Only applies if primary proportional band = 0

diSA

disabled or

EnAb diSA EnAb diSA EnAb

enabled

disabled or

enabled

disabled or

enabled

Range

Max.

Range

Min.

5555

1111

99.59

99.5999.59

diSA

ALA2 = P_Hi

ALA2

ALA2 = dE

ALA2

Always

LAEn = EnAb

Always

Slot A or B fitted with RSP module

P_Lo

bAnd

Setpoint ramp shown in operator mode, enable / disable

SP Ramp Rate Value

Spr

diSA

disabled or

EnAb

1 to 9999 units/hour or Off (blank)

enabled

diSA

Blank

Always

Parameter Lower

Display

Setpoint Value

Upper Display

Adjustment Range

Within scale range upper and lower limits

Default

Value

Range minimum

When Visible

Always

Local Setpoint Value

LSP

_LSP

*LSP

Setpoint 1 Value

SP1

_SP1

SP1

Setpoint2 Value

SP2

_SP2

SP2

Set-up Lock Code **First Operator mode displays follows.

SLoc

Within scale range upper and lower limits.

____ or * before the legend indicates if this is the currently active SP

Within scale range upper and lower limits.

____ or * before the legend indicates if this is the currently active SP

Within scale range upper and lower limits.

____ or * before the legend indicates if this is the currently active SP

0 to 9999

Range minimum.

1010

OpnA Opnb

diGi

 or

rSPi

diG2 = diS1

diGi

diG2

diS1

Always

Note:

Alarm parameters marked * are repeated in Configuration Mode.

Note:

**Once the complete list of Set Up Mode parameters has been displayed, the first Operator Mode display is shown without exiting from Set Up Mode. Display seen is dependant on the Display Strategy and status of Auto/Manual mode selection.

8.3 1400+ Controllers - Operator Mode

This is the mode used during normal operation of the instrument. It can be accessed from Select Mode, and is the usual mode entered at power-up. The available displays are dependent upon whether Dual or Remote Setpoint modes are being used, whether Setpoint Ramping is enabled and the setting of the Display Strategy parameter in Configuration Mode.

WARNING:

IN NORMAL OPERATION, THE OPERATOR MUST NOT REMOVE THE CONTROLLER FROM ITS HOUSING OR HAVE UNRESTRICTED ACCESS TO THE REAR TERMINALS, AS THIS WOULD PROVIDE POTENTIAL CONTACT WITH HAZARDOUS LIVE PARTS.

CAUTION:

Set all Configuration Mode parameters and Set Up Mode parameters as required before starting normal operations.

1400+ Controllers – Extended Operator Mode

Using the PC configuration software, it is possible to extend the Operator Mode displays available by adding parameters from Setup Mode. When an extended Operator Mode is configured the additional parameters are available after the standard operator displays.

Navigating in Operator Mode

Press to move between displays. When a display value can be adjusted, use or to change its value.

Note:

The operator can freely view the parameters in this mode, but alteration depends on the settings in the Configuration and Set Up Modes. All parameters in Display strategy 6 are read only, and can only be adjusted via Setup mode.

Table 12.

1400+ Operator Mode Displays

Upper

Display

PV Value

Actual SP Value

SP Value

SP1 Value

Lower

Display

Active SP

Value

Actual SP

Value

Blank

SP1

_SP1

When Visible Description

Display strategy 1 and 2. (Initial Screen)

Display strategy 3 and 6 (Initial Screen)

Display strategy 4. (Initial Screen)

Display strategy 5. (Initial Screen)

Display strategy 1, 3, 4, 5 and 6 if Digital Input is not

diSl

in config mode and RSP is not fitted

If Digital Input is set for dual SP (

diSl

config mode).

Process Variable and target value of currently selected Setpoint. Local SP is adjustable in Strategy 2

Process Variable and actual value of selected Setpoint (e.g. ramping SP value). Read only

Shows Process Variable. Read only

Shows target value of currently selected Setpoint. Read only

Target value of Setpoint. Adjustable except in Strategy 6

Target value of Setpoint 1. SP1 is selected as the active Setpoint. Adjustable except in Strategy 6

_SP1

means

SP2 Value

Local Setpoint Value

Remote Setpoint Value

__LSP rSP

diGi

Actual SP Value

SP Ramp Rate Value

SP2

_SP2

LSP

_LSP

*LSP

rSP

_rSP

*rSP

SPS

SPrP

If Digital Input is set for dual SP (

diSl

config mode). If Remote Setpoint

Input is fitted and Digital Input is not

diSl

in config mode

If Remote Setpoint Input is fitted and Digital Input is not

diSl

in config mode

If Remote Setpoint Input is fitted, Digital Input is not

diSl

in config mode and

SSEn

is enabled in

Setup mode

If a Ramping Setpoint is in use (

not Blank). If

Spr

(ramping SP)

is enabled in Setup

Target value of Setpoint 2.

_SP2

means SP2 is selected as the active Setpoint. Adjustable except in Strategy 6

Target value of Local Setpoint.

_LSP

means the local setpoint is selected as the active SP (if the digital input has been overridden, the _* character is lit instead). Adjustable except in Strategy 6

Target value of Remote Setpoint.

_rSP

means the remote setpoint is selected as the active SP (if the digital input has been overridden, the _* character is lit instead). Read only

Setpoint Select. Selects between Local or Remote Setpoints.

LSP

= local SP,

rSP

= remote SP,

diGi

selection via digital input (if configured). Note:

LSP

rSP

will override the digital

input (active SP indication changes to *)

Adjustable except in Strategy 6 Actual value of selected Setpoint (e.g.

ramping SP value). Read only

Setpoint ramping rate, in units per hour. Set to Blank (higher than 9999) to turn off

Upper

Display

Active Alarm Status

Lower

Display

ALSt

When Visible Description

mode. ramping. Adjustable except in Strategy 6

When any alarm is active.

ALM indicator will also flash

Upper display shows which alarm(s) are active. Inactive alarms are blank

1 1 2222

Alarm 1 Active Alarm 2 Active Loop Alarm Active

Note:

When an extended Operator Mode is configured the additional parameters are available after the above parameters. Extended Operator Mode parameters can only be configured using the PC software.

Adjusting the Local Setpoint(s)

Setpoints can be adjusted within the limits set by the Setup. Operator Mode adjustment of Setpoint is not possible if Display Strategy 6 has been selected on Configuration Mode.

Setpoint Upper

and

Lower Limit

parameters in

Press to select the adjustable setpoint display

Press or to adjust the setpoint to the required value.

8.4 Adjusting the Setpoint Ramp Rate

The ramp rate may be adjusted in the range 1 to 9999 and OFF. Increasing the ramp rate value beyond 9999 will cause the upper display to go blank and setpoint ramping to be switched OFF. Setpoint ramping can be resumed by decreasing the ramp rate to 9999 or less.

Press to select the adjustable setpoint display

Press or to adjust the setpoint to the required value.

WARNING:

THE SETPOINT RAMP FEATURE DISABLES THE PRE-TUNE FACILITY. THE SELF-TUNE FACILITY WILL COMMENCE ONLY AFTER THE SETPOINT HAS COMPLETED THE RAMP.

8.5 Manual Control Mode

To allow manual control to be selected in Operator Mode, poen must be enabled in Set Up Mode. Manual Mode can be selected using the front keys or by use of a digital input if one has been fitted and configured for this function.

Selecting/deselecting Manual Control Mode

Press the key to toggle between Automatic and Manual control. The indicator flashes continually in Manual Mode

Press or to adjust the output power to the required value.

CAUTION:

The Manual Mode power level can be adjusted from 0 to 100% (-100 to +100% for dual output). It is not restricted by the Output Power Limit parameter

OPuL

Note:

Disabling

poen

in Set Up Mode while manual control mode is active will lock the controller into manual mode. Pressing the Auto/Man key will no longer cause a return to automatic control. To exit from Manual Mode,

poen

must temporarily be re-enabled.

8.6 1400+ Controllers –Communications Parameters

The Modbus parameter addresses, and the possible ASCII message types and parameter indents for the 1400+ are detailed below. RO indicates a parameter is read only, R/W indicates it can also be written to. Communications writes will not implemented if the Communications Write Parameter is disabled. Refer to the Modbus and ASCII Communications sections of this manual for details of the protocols used.

Bit Parameters

Bit parameters are not applicable to the ASCII protocol.

Table 13.

Parameter Modbus

1400+ Communications - Bit Parameters

Notes

Parameter No.

Communication Write Status

Auto / Manual Self Tune Pre tune

2 3 4

R/W 1 = Manual Control, 0 = Automatic Control R/W 1 = Activate(d), 0 = Dis-engage(d) R/W 1 = Activate(d), 0 = Dis-engage(d)

1 = Write Enabled, 0 = Write Disabled. A negative acknowledgement (exception code 3) is sent to write commands if communications writes are disabled

Parameter Modbus

Notes

Parameter No.

Alarm 1 Status Alarm 2 Status Setpoint Ramping Loop Alarm Status Loop Alarm

Digital Input 2

To set the bit value to 1 write FF, to set the bit value to 0 write 00. Refer to Function Code 05 in the Modbus Communications section.

5 6

7 10 12

RO 1 = Active, 0 = Inactive

RO 1 = Active, 0 = Inactive R/W 1 = Enable(d), 0 = Disable(d) R/W 1 = Active/Enable, 0 = Inactive/Disable R/W

RO State of Option B digital input.

Read to get loop alarm status. Write 0/1 to disable/enable.

Word Parameters

Table 14.

Parameter Modbus

Parameter No.

Process Variable

Setpoint

Output Power

Deviation

Secondary Proportional Band

Primary Proportional Band

Direct / Reverse Acting

Automatic Reset Time (or Loop Alarm Time)

1400+ Communications - Word Parameters

ASCII Ident &

Notes

Message Types

R/W

Type 2

Type 3/4

Type 2

Type 3/4

Type 2

Type 2, 3/4

Current value of PV.

R/W

If under-range = 62976 (<??>5 ASCII) If over-range = 63232 (<??>0 ASCII) If Sensor break = 63488 (ASCII = n/a) Value of currently selected setpoint.

(Target setpoint if ramping). Parameter is read only if the current setpoint is RSP.

0% to 100% for single output; −100% to +100% for dual output control.

Read Only if not in manual control. Difference between Process Variable

and Setpoint (value = PV-SP) Adjustable 0.0% to 999.9% of input

span. Read only when Self-Tuning. Adjustable 0.0% to 999.9% of input

span. Read only when Self-Tuning.

1 = Direct Acting, 0 = Reverse

Integral Time Constant value. (or Loop Alarm Time value in ON/OFF control mode if Loop Alarm Enabled)

Read only if Self-Tuning. ASCII range: 0 to 99m 59sec (99.59) Modbus range: 0 to 5999

Parameter Modbus

Parameter No.

Rate

Output 1 Cycle time

Scale Range Lower Limit

Scale Range Upper Limit

Alarm 1 Value

Alarm 2 Value

Manual Reset

Overlap / Deadband

On / Off Differential

Decimal Point Position

Output 2 Cycle Time.

Primary Output Power Limit

Actual Setpoint

Setpoint Upper Limit

Setpoint Lower Limit

R/W

ASCII Ident &

Message Types

Type 2, 3/4

Type 2

Type 3/4

Type 2

Type 3/4

Type 2

Type 3/4

Type 2, 3/4

Type 2

Type 3/4

Type 2

Type 3/4

Type 2

Type 3/4

Type 2

Type 3/4

Type 2

Type 3/4

R/W

Notes

Derivative Time Constant value. Read only if Self-Tuning.

ASCII range: 0 to 99m 59secs. (99.59) Modbus range: 0 to 5999

0.5, 1, 2, 4, 8, 16, 32, 64,128, 256 or 512 seconds.

Lower limit of scaled input range

Upper limit of scaled input range

Alarm 1 active at this level

Alarm 2 active at this level

Bias value. 0% to 100% for single control output or

-100% to +100% for dual outputs 20% to +20% of

Negative value = Deadband Positive value = Overlap

0.1% to 10.0% of input span Used for Primary output on/off

differential and for combined Primary and Secondary on/off differential.

0 = xxxx 1 = xxx.x 2 = xx.xx 3 = x.xxx

Read only if not Linear Input.

0.5, 1, 2, 4, 8, 16, 32, 64,128, 256 or 512 seconds.

Safety power limit; 0 to 100 %.

Current (ramping) value of selected setpoint.

Maximum setpoint value. Current SP to Input Range Maximum

Minimum setpoint value. Current SP to Input Range Minimum

PB_P

PB_S

;

Parameter Modbus

Parameter No.

Setpoint Ramp Rate

Input Filter Time Constant

Process Value Offset

Re-transmit Output Maximum

Re-transmit Output Minimum

Setpoint 2 Remote Setpoint

Remote Setpoint Offset

Alarm 1 Hysteresis Alarm 2 Hysteresis Setpoint 1 Setpoint Select

29 30

32 33 34 35

R/W

R/W R/W R/W R/W

ASCII Ident &

Message Types

Type 2

Type 3/4

Type 2, 3/4

Type 2

Type 3/4

[

Type 2, 3/4

R/W

Value of Setpoint 2

R/W

0 to 100% of span 0 to 100% of span Value of Setpoint 1

Notes

0 = 0ff, 1 to 9999 increments / hour. Dec Point position as for input range.

0 to 100 seconds

Modified PV = Actual PV + PV Offset. Limited by Scale Range Maximum and Scale Range Minimum.

Maximum scale value for retransmit output, 1999 to 9999. This parameter applies to the first re-transmit output fitted (see also Modbus parameters 2214, 2224 & 2234).

Minimum scale value for retransmit output, 1999 to 9999. This parameter applies to the first re-transmit output fitted (see also Modbus parameters 2215, 2225 & 2235).

Value of Remote Setpoint. Returns 0FFFFhex if RSP not fitted.

Modified RSP = Actual RSP + RSP Offset. Limited by Scale Range Maximum and Scale Range Minimum.

Shows which is the currently selected active setpoint. If a digital input has been configured for Setpoint Select, it will take priority over this parameter

1 = SP1 or LSP 2 = SP2 100hex = RSP

Parameter Modbus

Parameter No.

Controller commands

ASCII Ident &

Message Types

Type 3/4 R/W

Notes

Only Type 3 / 4 ASCII messages are allowed with this parameter. The {DATA} field must be one of eight fivedigit numbers. The commands corresponding to the {DATA} field value are:

00010 = Activate Manual Control 00020 = Activate Automatic Control 00030 = Activate the Self-Tune 00040 = De-activate the Self-Tune 00050 = Request Pre-Tune 00060 = Abort Pre-Tune 00130 = Activate Loop Alarm 00140 = De-activate Loop Alarm

Parameter Modbus

Parameter No.

Controller Status

Scan Table

Equipment ID Serial Number Low Serial Number Mid Serial Number High Date of

manufacture

122 123 124 125 126

RO RO RO RO RO

ASCII Ident &

Message Types

Type 2

]

Type 2

The four digit model number 6100 Digits aaaa Digits bbbb Digits cccc

Notes

Bit Meaning

Reads back main process values. Response is: L{N}25aaaaabbbbb cccccdddddeeeeeA* where:

aaaaa = Actual Setpoint value bbbbb = Process Variable value ccccc = Primary PID Power value ddddd = Secondary PID Power value eeeee = Controller Status (see above)

Manufacturing date code as an encoded binary number. (e.g. 0403 for April 2003 is returned as 193hex)

Alarm 1 status. 0 = activated, 1 = safe

Alarm 2 status. 0 = activated, 1 = safe

Self-Tune status. 0 = disabled 1 = activated

Change Indicator. 1 = A parameter other than controller status, PV or Output power has been changed since the last time the status word was read.

Comms write status: 0 = disabled 1 = enabled.

A/M control. 0 = disabled 1 = enabled

Pre-tune status. 0 = disabled 1 = enabled.

Loop alarm status. 0 = activated, 1 = safe.

Unit serial number. Format aaaa bbbb cccc, (12 BCD digits).

Parameter Modbus

Parameter No.

Product Revision Level

Firmware Version

Input status

Remote Setpoint Lower Limit

Remote Setpoint Upper Limit

Option Slot 1 Re-transmit output Maximum

Option Slot 1 Re-transmit output Minimum

Option Slot 2 Re-transmit output Maximum

Option Slot 2 Re-transmit output Minimum

Option Slot 3 Re-transmit output Maximum

Option Slot 3 Re-transmit output Minimum

129

130

133

2123

2124

2214

2215

2224

2225

2234

2235

R/W

ASCII Ident &

Message Types

Type 2, 3/4

Bits 0 – 4: Revision number (1,2...)

Input status. Read Only.

R/W

Notes

Bits 0 – 7: Alpha part of PRL. (e.g. A = 01hex)

Bits 8 – 15: Numeric part of PRL. (e.g. 13 = 0Dhex)

Bits 5 – 9: Alpha version (A=0, B=1...) Bits 10 – 15: Numeric version (starting

from 121 = 0)

Bit 0: Sensor break flag Bit 1: Under-range flag Bit 2: Over-range flag RSP value to be used when RSP

input is at minimum. -1999 to 9999 RSP value to be used when RSP

input is at minimum. -1999 to 9999 Maximum scale value for retransmit

output in slot 1, -1999 to 9999.

Minimum scale value for retransmit output in slot 1, -1999 to 9999.

Maximum scale value for retransmit output in slot 2, -1999 to 9999.

Minimum scale value for retransmit output in slot 2, -1999 to 9999.

Maximum scale value for retransmit output in slot 3, -1999 to 9999.

Minimum scale value for retransmit output in slot 3, -1999 to 9999.

Note:

Some of the parameters that do not apply for a particular configuration will accept reads and writes (e.g. attempting to scale a Linear output which has not been fitted). Read only parameters will return an exception if an attempt is made to write values to them.

Time

SECTION 9: MANUALLY TUNING CONTROLLERS

9.1 Single Control Tuning (PID with Primary Output only)

This simple technique balances the need to reach setpoint quickly, with the wish to limit overshoot at start-up or during process changes. It determines values for the

Band

(Pb_P),

PID control

device.

Integral Time Constant

algorithm to give acceptable results in most applications that use a

(ArSt) and

Derivative Time Constant

Primary Proportional

(RAte) that allow the

single control

setpoint

CAUTION:

This technique is suitable only for processes that are not harmed by large fluctuations in the process variable.

1. Check that the safe levels for your process. Adjust if required.

2. Set the overshoots beyond this value might cause damage).

3. Select

4. Switch on the process. The Peak-to-Peak variation (P) of the first cycle (i.e. the difference between the highest value of the first overshoot and the lowest value of the first undershoot), and the time period of the oscillation (T) in minutes. See the example diagram below

Setpoint

On-Off control

Setpoint Upper Limit

to the normal operating value for the process (or to a lower value if

(i.e. set Pb_P = 0).

process variable

(SPuL) and

will oscillate about the setpoint. Record the

Setpoint Lower Limit

- Manually Tuning

(SPLL) are set to

PID.

5. Calculate the between

Pb_P = x 100

PID control

parameters using the formula below.

Scale Range Lower Limit

and

Scale Range Upper Limit

Input Span

is the difference

Input Span

ArSt = T min rATE = minutes

Process Variable

Figure 34. Manually Tuning PID

9.2 Dual Control Tuning (PID with Primary and Secondary Outputs)

This simple tuning technique balances the need to reach setpoint quickly, with the wish to limit

setpoint Proportional Band

and results in most applications that use

CAUTION:

overshoot at start-up and during process changes. It determines values for the

(Pb_P),

Derivative Time Constant

Secondary Proportional Band (

(RAte) that allow the

dual control

PID control

(e.g. Heat & Cool).

Pb_S

), Integral Time Constant

algorithm to give acceptable

Primary

(ArSt)

This technique is suitable only for processes that are not harmed by large fluctuations in the process variable.

1. Tune the controller using only the Primary Control output as described in the

Tuning

2. Set Pb_S to the same value as Pb_P

section above.

and monitor the operation of the controller in dual

Single Control

control mode. If there is a tendency to oscillate as the control passes into the Secondary Proportional Band, increase the value of in the region of the Secondary Proportional Band, decrease the value of

Pb_S

. If the process appears to be over-damped

Pb_S

3. When the PID tuning values have been determined, if there is a kick to the process variable as control passes from one output to the other, set the Overlap/Deadband parameter to a positive value to introduce some overlap. Adjust this value by trial and error until satisfactory results are obtained.

9.3 Valve Control Tuning (PI with Linear Outputs)

This tuning technique is used when controlling a signal for its positioning circuitry. It determines values for the and

Integral Time Constant

(OFF). This

PI Control

(ArSt). The

minimises valve wear while giving optimal process control.

Derivative Time Constant

modulating valve

Primary Proportional Band

requiring a linear (mA/VDC)

(Pb_P),

(RAte) is normally set to zero

CAUTION:

This technique is suitable only for processes that are not harmed by large fluctuations in the process variable.

1. Set the setpoint to the normal operating process value (or to a lower value if overshoot beyond this value is likely to cause damage).

2. Set the

3. Set the

Set the

Using manual control ensure that the valve is positioned away from its end stops.

Primary Proportional Band Integral Time Constant

to the maximum value (i.e. set ArSt = 99.59).

Derivative Time Constant

to the minimum value (i.e. set Pb_P = 0.5%).

to OFF (i.e. set RAte = 0.00).

Time

Process Variable

Time

Process Variable

START

Apply Power to

Does the

Oscillate?

Note the time

Pb_P

Are the

zero?

Pb_P

END

Note the period

Pb_P

Yes

The controller is now tuned.

6. Follow the instructions in the diagram below. At each stage, allow sufficient settling time before moving on to the next stage.

the load.

continuously

interval Ta

Set

ArSt

= 0.8%

= Ta

Oscillations

decaying to

Multiply

setting by 1.5

of the decaying

oscillations (T

)

Multiply

setting by 1.5

Set

ArSt

= T

Table 15.

Fine-tuning may be required

to optimise the controllers

Manually Tuning Valve Control

9.4 Manually Fine Tuning

A separate cycle time adjustment parameter is provided for each time proportioning control output.

Note:

Adjusting the cycle time affects the controllers operation; a shorter cycle time gives more accurate control but electromechanical components such as relays have a reduced life span.

1. Increase the width of the proportional band if the process overshoots or oscillates excessively.

2. Decrease the width of the proportional band if the process responds slowly or fails to reach setpoint.

3. Increase the automatic reset until the process becomes unstable, then decrease until stability has been restored.

Note:

Allow enough time for the controller and process to adjust.

4. Initially add rate at a value between 1/4th and 1/10th of the automatic reset value.

5. Decrease Rate if the process overshoots/undershoots or oscillates excessively.

Note:

When controlling a modulating valve, it is recommended that Rate (Derivative) is set to 0 seconds (OFF) to avoid excessive valve activity. Rate can cause process instability.

6. After making all other adjustments, if an offset exists between the setpoint and the process variable use the Below setpoint - use a larger bias value Above setpoint - use a smaller bias value.

Bias

(manual reset) to eliminate the error:

SECTION 10: MODBUS SERIAL COMMUNICATIONS

All models support the Modbus RTU communication protocol. Some models also support an

communication protocol

selected from Configuration Mode. The RS485 Communications Module must be fitted into Option Slot A in order to use serial communications.

Refer to the relevant Model Group Section for the ASCII and Modbus Application Layer (parameter address/ident information).

For a complete description of the Modbus protocol refer to the description provided at

http://www.modicon.com/

. Where both Modbus and ASCII are supported, the protocol to be used is

http://www.modbus.org/

ASCII

10.1 Physical Layer

The Base address, bit rate and character format are configured via the front panel in Configuration Mode or by using the PC Configurator software.

Physical layer configuration settings possible are: Data rate: 1200, 2400, 4800 (default), 9600 and 19,200 bps Parity: None (default), Even, Odd Character format: Always 8 bits per character.

The transmitter must not start transmission until 3 character times have elapsed since reception of the last character in a message, and must release the transmission line within 3 character times of the last character in a message.

Note:

Three character times = 1.5ms at 19200, 3ms at 9600, 6ms at 4800, 12ms at 2400 and 24ms at 1200 bps.

10.2 Link Layer

A Query (or command) is transmitted from the Modbus Master to the Modbus Slave. The slave instrument assembles the reply to the master. All of the instruments covered by this manual are slave devices, and cannot act as a Modbus Master.

MODBUS

MASTER

SLAVE

INSTRUMENT

QUERY

RESPONSE

Modbus Link Layer

A message for either a QUERY or RESPONSE is made up of an inter-message gap followed by a sequence of data characters. The inter-message gap is at least 3.5 data character times.

Data is encoded for each character as binary data, transmitted LSB first. For a QUERY the address field contains the address of the slave destination. The slave address is

given together with the Function and Data fields by the Application layer. The CRC is generated from the given address, function and data characters.

For a RESPONSE the address field contains the address of the responding slave. The Function and Data fields are generated by the slave application. The CRC is generated from the address, function and data characters.

The standard MODBUS RTU CRC-16 calculation employing the polynomial 216+215+22+1 is used.

Inter-message gap

Address 1 character

Function 1 character

Data n characters

CRC Check 2 characters

10.3 Device Addressing

The instrument is assigned a unique device address by the user in the range 1 (default) to 255 using the Addr parameter in Configuration Mode. This address is used to recognise Modbus Queries intended for this instrument. The instrument does not respond to Modbus Queries that do not match the address that has been assigned to it.

The instrument will also accept global Queries using device address 0 no matter what device address is assigned. No responses are returned for globally addressed Queries.

10.4 Supported Modbus Functions

Modbus defines several function types; these instruments support the following types:

Function

Table 16.

Modbus Meaning Description

Supported Modbus Functions

Code (decimal)

01 / 02 Read Coil/Input Status Read output/input status bits at given address. 03 / 04 Read Holding/Input registers

05 Force single Coil

06 Pre-set Single Register Writes two bytes to a specified word address. 08 Diagnostics Used for loopback test. 16 Pre-set Multiple Registers

Read current binary value of specified number of parameters at given address. Up to 64 parameters can be accessed with one Query.

Writes a single binary bit to the Specified Slave Bit address.

Writes up to 1 word parameter values to the specified address range.

10.5 Function Descriptions

The following is interpreted from the Modbus Protocol Description obtainable from

http://www.modicon.com/

required.

http://www.modbus.org/

. Refer to that document if clarification is

In the function descriptions below, the preceding device address value is assumed, as is the correctly formed two-byte CRC value at the end of the QUERY and RESPONSE frames.

Read Coil/Input Status (Function 01 / 02)

Reads the content of instruments output/input status bits at the specified bit address.

Table 17.

Read Coil/Input Status (Modbus Function 01/02)

QUERY

Function Address of 1st Bit Number of Bits

01 / 02 HI LO HI LO

RESPONSE

Function Number of Bytes First 8 bits 2nd 8 Bits

01 / 02

In the response the “Number of Bytes” indicates the number of data bytes read from the instrument. E.g. if 16 bits of data are returned then the count will be 2. The maximum number of bits that can be read is 16 in one transaction. The first bit read is returned in the least significant bit of the first 8 bits returned.

Read Holding/Input Registers (Function 03 / 04)

Reads current binary value of data at the specified word addresses.

Table 18.

Read Holding/Input Registers (Modbus Function 03/04)

QUERY

Function Address of 1st Word Number of Words

03 / 04 HI LO HI LO

RESPONSE

Function Number of

Bytes

03 / 04 HI LO HI LO

First Word

Last Word

In the response the “Number of Bytes” indicates the number of data bytes read from the instrument. E.g. if 5 words are read, the count will be 10 (A hex). The maximum number of words that can be read is 64. If a parameter does not exist at one of the addresses read, then a value of 0000h is returned for that word.

Force Single Coil (Function 05)

Writes a single binary value to the Specified Instrument Bit address.

Table 19.

Force Single Coil (Modbus Function 05)

QUERY

Function Address of Bit State to write

05 HI LO FF/00 00

RESPONSE

Function Address of Bit State written

05 HI LO FF/00 00

The address specifies the address of the bit to be written to. The State to write is FF when the bit is to be SET and 00 if the bit is to be RESET.

Note:

The Response normally returns the same data as the Query.

Pre-Set Single Register (Function 06)

Writes two bytes to a specified word address.

Table 20.

Pre-Set Single Register (Modbus Function 06)

QUERY

Function Address of Word Value to write

06 HI LO HI LO

RESPONSE

Function Address of Word Value written

06 HI LO HI LO

Note:

The Response normally returns the same data as the Query.

Loopback Diagnostic Test (Function 08)

Table 21.

Loopback Diagnostic Test (Modbus Function 08)

QUERY

Function Diagnostic Code Value

08 HI =00 LO=00 HI LO

RESPONSE

Function Sub-function Value

08 HI=00 LO=00 HI LO

Note:

The Response normally returns the same data as the Query.

Pre-Set Multiple Registers (Function 10 Hex)

Writes a consecutive word (two-byte) value to the specified address range.

Table 22.

Pre-Set Multiple Registers (Modbus Function 10 Hex)

QUERY

Function 1st Word

Address

10 HI LO HI LO HI LO

Number of

Words

Number of

Query Bytes

First value to write

RESPONSE

Function 1st Word Address Number of Words

10 HI LO HI LO

Note:

The number of consecutive words that can be written is limited to 1.

Exception Responses

When a QUERY is sent that the instrument cannot interpret then an Exception RESPONSE is returned. Possible exception responses are:

Exception

Table 23.

Error Condition Interpretation

Modbus Exception Responses

Code

Unused

None.

01 02

Illegal function Function number out of range. Illegal Data Address

Illegal Data Value

Write functions: Parameter number out of range or not supported. (for write functions only).

Read Functions: Start parameter does not exist or end parameter greater than 65536.

Attempt to write invalid data / required action not executed.

The format of an exception response is:

RESPONSE

Function Exception Code

Original Function code with its

Significant Bit

(MSB) set.

Most

as detailed above

Note:

In the case of multiple exception codes for a single QUERY the Exception code returned is the one corresponding to the first parameter in error.

SECTION 11: ASCII COMMUNICATIONS

This is simple ASCII protocol provides backwards compatibility with some older products. ASCII is not available in all models in the range. The Modbus protocol is recommended for future use. Refer to the relevant Model Group Section for the ASCII and Modbus Application Layer (parameter address/ident information).

11.1 Physical Layer

The Base address, bit rate and character format are configured via the front panel in Configuration Mode or by using the PC Configurator software.

Physical layer configuration settings possible are: Data rate: 1200, 2400, 4800 (default), 9600 and 19,200 bps Parity: Even Character format: 7 bits per character. + 1 stop bit.

Note:

Three character times = 1.5ms at 19200, 3ms at 9600, 6ms at 4800, 12ms at 2400 and 24ms at 1200 bps.

11.2 Device Addressing

The instrument is assigned a device address by the user using the Addr parameter in Configuration Mode. The address may be set to any unique value from 1 (default) to 99. This address is used to recognise ASCII messages intended for this instrument. The instrument does not respond to messages that do not match the address that has been assigned to it.

11.3 Session Layer

The ASCII protocol assumes half duplex communications. The master device initiates all communication. The master sends a command or query to the addressed slave instrument and the slave replies with an acknowledgement of the command or the reply to the query.

Messages from the master device may be one of five types:

Type 1: {S}{N}??* Type 2: {S}{N}{P}{C}* or R{N}{P}{C}* Type 3: {S}{N}{P}#{DATA}* or R{N}{P}#{DATA}* Type 4: {S}{N}{P}I* or R{N}{P}I* Type 5: {S} {N} \ P S S ? *

All characters are in ASCII code. See the following parameters in brackets { }.

Parameter Key table

for details of the

{S}

{N}

{P} {C}

# {DATA} P S S *

Table 24.

is the Start of Message character L (Hex 4C) or R (Hex 52). L is used for Controllers; R is used for Profilers.

is the slave device address (in the range 1 - 99); addresses 1 - 9 may be represented by a single digit (e.g. 7) or in two-digit form, the first digit being zero (e.g. 07).

is a character which identifies the parameter to be interrogated/modified. is the command (Refer to

information for each Model Group

indicates that {DATA} is to follow (Hex 23) is a string of numerical data in ASCII code (refer to the Data Element table below) is the Program Number is the Segment Number (01 to 16) is the End of Message Character (Hex 2A)

ASCII Parameter Key

the Serial Communications Application Layer

)

No space characters are permitted in messages. Any syntax errors in a received message will cause the slave instrument to issue no reply and await the Start of Message character.

Table 25.

ASCII Data Element – Sign/Decimal Point Position

{DATA} Content Data Format Description

abcd0 +abcd abcd1 +abc.d abcd2 +ab.cd abcd3 +a.bcd Abcd5 - abcd Abcd6 - abc.d Abcd7 - ab.cd Abcd8 - a.bcd

Positive value, no decimal place Positive value, one decimal place Positive value, two decimal places Positive value, three decimal places Negative value, no decimal place Negative value, one decimal place Negative value, two decimal places Negative value, three decimal places

(in the Data Content, abcd represents the data value, the last digit indicates data format)

Type 1 Message

L {N} ? ? *

This message is used by the master device to determine whether the addressed slave device is active.

The reply from an active slave is

L {N} ? A *

An inactive device will give no reply.

Type 2 Message

L {N} {P} {C} * or R {N} {P} {C} *

This type of message is used by the master device, to interrogate or modify a parameter in the addressed slave device. {P} identifies the parameter and {C} represents the command to be executed, which may be one of the following:

+ (Hex 2B) = Increment the value of the parameter defined by {P} – (Hex 2D) = Decrement the value of the parameter defined by {P} ? (Hex 3F) = Determine the current value of the parameter defined by {P}

The reply from the addressed slave device is of the form:

L {N} {P} {DATA} A * or R {N} {P} {DATA} A *

where {DATA} comprises five ASCII-coded digits whose format is shown in the above. The data is the value requested in a query message or the new value of the parameter after modification. If the action requested by the message from the master device would result in an invalid value for that parameter (either because the requested new value would be outside the permitted range for that parameter or because the parameter is not modifiable), the slave device replies with a negative acknowledgement:

L {N} {P} {DATA} N * or R {N} {P} {DATA} N *

The {DATA} string in the negative acknowledgement reply will be indeterminate. If the process variable or the deviation is interrogated while the process variable is outside the range of the slave device, the reply is:

L {N} {P} < ? ? > 0 A *

if the process variable is over-range, or

L {N} {P} < ? ? > 5 A

if the process variable is under-range.

Data Element table

Type 3 Message

L {N} {P} # {DATA} * or R {N} {P} # {DATA} *

This message type is used by the master device to set a parameter to the value specified in {DATA}. The command is not implemented immediately by the slave device; the slave will receive this command and will then wait for a Type 4 message (see below). Upon receipt of a Type 3 message, if the {DATA} content and the specified parameter are valid, the slave device reply is of the form:

L {N} {P} {DATA} I * or R {N} {P} {DATA} I *

(where I = Hex 49) indicating that the slave device is ready to implement the command. If the parameter specified is invalid or is not modifiable or if the desired value is outside the permitted range for that parameter, the slave device replies with a negative acknowledgement in the form:

L {N} {P} {DATA} N * or R {N} {P} {DATA} N *

Type 4 Message

L {N} {P} I * or R {N} {P} I *

This type of message is sent by the master device to the addressed slave device, following a successful Type 3 transaction with the same slave device. Provided that the {DATA} content and the parameter specified in the preceding Type 3 message are still valid, the slave device will then set the parameter to the desired value and will reply in the form:

L {N} {P} {DATA} A *

where {DATA} is the new value of the parameter. If the new value or parameter specified is invalid, the slave device will reply with a negative acknowledgement in the form:

L {N} {P} {DATA} N *

where {DATA} is indeterminate. If the immediately preceding message received by the slave device was not a Type 3 message, the Type 4 message is ignored.

11.4 Error Response

The circumstances under which a message received from the master device is ignored are:

Parity error detected Syntax error detected Timeout elapsed Receipt of a Type 4 message without a preceding Type 3 command message.

Negative acknowledgements will be returned if, in spite of the received message being notionally correct, the slave device cannot supply the requested information or perform the requested operation. The {DATA} element of a negative acknowledgement will be indeterminate.

SECTION 12: CALIBRATION MODE

WARNING:

CALIBRATION IS ONLY REQUIRED FOR INSTRUMENTS IN WHICH CALIBRATION ERRORS HAVE BEEN ENCOUNTERED. REFER TO CALIBRATION CHECK BELOW.

CAUTION:

Calibration must be performed by personnel who are technically competent and authorised to do so.

Calibration is carried out during manufacture and is not normally required again during the lifetime of an instrument.

12.1 Equipment Required For Checking or Calibrating the Universal Input

A suitable calibration signal source is required for each input type. To verify the accuracy of the instrument or carry out recalibration, the listed input sources are required, with better than ±0.05% of the reading accuracy:

1. DC linear inputs: 0 to 50mV, 0 to 10VDC and 0 to 20mADC.

2. Thermocouple inputs - complete with 0ºC reference facility, appropriate thermocouple functions and compensating leads (or equivalent).

3. RTD inputs: decade resistance box with connections for three-wire input (or equivalent).

12.2 Calibration Check

1. Set the instrument to the required input type.

2. Power up the instrument and connect the correct input leads. Leave powered up for at least five minutes for RTD and DC linear inputs, or at least 30 minutes for thermocouple inputs.

3. After the appropriate delay for stabilisation has elapsed, check the calibration by connecting the appropriate input source and checking a number of cardinal points.

4. Repeat the test for all required input types.

12.3 Recalibration Procedure

Recalibration is carried out in five phases as shown in the

table

below, each phase corresponds to

an input range of the instrument.

CAUTION:

The 50mV phase MUST be calibrated before the thermocouple range.

iP_1

iP_2

iP_3 iP_4 iP_5

Table 26.

50 mV 10 V 20 mA RTD input (200 ohm) Thermocouple (K type source at 0ºC required)

Input Calibration phases

To start calibration, apply the required calibration input from the source type list above, using the correct connections,

1. While the instrument is powering up, press and together until iP_1 is displayed.

Note:

If a phase has not been previously calibrated the display will flash.

2. Press to initiate calibration on PID Controllers, or Press to initiate calibration on Limit Controllers, or Press and together to initiate calibration on Indicators.

3. During calibration the display changes to −−−−

−−−− for a few seconds.

−−−−−−−−

4. If the input is misconnected or an incorrect signal is applied the calibration will be aborted and the display will shown FAiL. The previous calibration value will be retained.

5. If the calibration has succeeded, the pass display is shown iP_1 (non-flashing).

6. Press to step onto the next phase.

7. Repeat this process for each input type until all the phases are calibrated.

Note:

Switch off the instrument to exit the Calibration Mode. Calibration Mode automatically exits if there is no button activity for five minutes.

SECTION 13: APPENDIX 1 – GLOSSARY

This Glossary explains the technical terms and parameters used in this manual. The entry type is also shown:

General Definition: Terms normally applicable all models. Controller Definition: Terms applicable to Controller models only. VMD Controller Definition: Terms applicable to VMD Controller models only. Limit Controller Definition: Terms applicable to Limit Controller models only. Indicator Definition: Terms applicable to Indicator models only. General Parameter: Parameters normally applicable all models. Controller Parameter: Parameters applicable to Controller models only. VMD Controller Parameter: Parameters applicable to VMD Controller models only. Limit Controller Parameter: Parameters applicable to Limit Controller models only. Indicator Parameter: Parameters applicable to Indicator models only. Controller Tuning Parameter: Parameters relating to the tuning of Controller models.

Active Setpoint Active Setpoint is the setpoint used as the current target Setpoint Value. Some controllers can have more than one setpoint (e.g. Setpoint 1 and 2 or Local and Remote Setpoints), but only one of these is active at any time.

Also refer to

Enable

Actual Setpoint

Actual Setpoint is the current value of the setpoint. This may be different to the Active Setpoint’s target value if the setpoint is currently ramping. The actual setpoint will rise or fall at the ramp-rate set, until it reaches the target setpoint value.

Also refer to

Actual Setpoint, Remote Setpoint, Setpoint, Setpoint Select

Active Setpoint, Setpoint, Setpoint Ramp Enable

Type: Controller Definition

and

Setpoint Select

Type: Controller Definition

and

Setpoint Select

The

Inactive

Active

Alarm Hysteresis

Type: General Parameter

An adjustable band on the “safe” side of an alarm point, through which the process variable must pass before the alarm will change state, as shown in the diagram below. E.g. a high alarm’s hysteresis band is below the high alarm value, and a low alarm’s hysteresis is above the low alarm value. Also refer to

Alarm Operation

PROCESS HIGH ALARM

Process Variable

PROCESS LOW ALARM

Inactive

Alarm Value

Alarm Hysteresis Value

Alarm Value

Inactive

Alarm Value (from Setpoint)

Process Variable

BAND ALARM

DEVIATION HIGH ALARM

Process Variable

DEVIATION LOW ALARM

Inactive

Alarm Inactive

Inactive

Alarm Active

Inactive

Alarm Inactive

Alarm Hysteresis Value

Setpoint

Alarm Hysteresis Value

Alarm Value (from Setpoint)

Alarm Hysteresis Value Setpoint

Setpoint Alarm Hysteresis Value Alarm Value

(from Setpoint)

Figure 35. Alarm Hysteresis Operation

Output Off

..Output On

Alarm Off

..Alarm On

Alarm

Value

Output On

..Output Off

Alarm Off

..Alarm On

Alarm

Value

Output On

..Output Off

Alarm On

..Alarm Off

Alarm

Value

Output Off

..Output On

Alarm On

..Alarm Off

Alarm

Value

Output On

..Output On

Alarm On

..Alarm On

Alarm Value

Output Off

Alarm On

..Alarm On

Alarm Value

Output Off

..Output On

Alarm Off

..Alarm On

Alarm Value

Output On

Alarm Off

..Alarm On

Alarm Value

Output On

..Output Off

Alarm On

..Alarm Off

Alarm Value

Output Off

..Output On

Alarm On

..Alarm Off

Alarm Value

Process Variable

Alarm Off

Process Variable

Alarm Off

Process Variable

Setpoint

Process Variable

Alarm Operation

Type: General Definition

The different alarm types are shown below, together with the action of any outputs. Also refer to

Logical Alarm Combinations, Loop Alarm, Process High Alarm

Alarm Hysteresis, Alarm Inhibit, Band Alarm, Deviation Alarm, Latching Relay

and

Process Low Alarm

Process High Alarm

Direct-Acting

Process High Alarm

Reverse-Acting

Process Low Alarm

Direct-Acting

Process Low Alarm

Reverse-Acting

Band Alarm

Direct-Acting

Band Alarm

Output Off

Output On .Output Off

Reverse-Acting

Deviation High Alarm (+ve values) Direct-Acting

Deviation High Alarm (+ve values) Reverse-Acting

Deviation Low Alarm (-ve values) Direct-Acting

Deviation Low Alarm (-ve values) Reverse-Acting

.Output Off

Figure 36. Alarm Operation

Alarm Inhibit

Type: General Parameter

Inhibits an alarm at power-up or when the controller Setpoint is switched, until that alarm goes inactive. The alarm operates normally from that point onwards.

Also refer to

Automatic Reset (Integral)

Alarm Operation

Type: Controller Tuning Parameter

Used to automatically bias the proportional output(s) to compensate for process load variations. It is adjustable in the range 1 seconds to 99 minutes 59 seconds per repeat and OFF (value greater than 99 minutes 59 seconds - display shows OFF). Decreasing the time increases the Integral action. This parameter is not available if the primary output is set to On-Off.

Display code = ArSt, default value = five minutes and zero seconds (5555

Also refer to

Auto Pre-Tune

Primary Proportional Band, Secondary Proportional Band, Rate, PID

00).

0000

, and

Tuning

Type: Controller Tuning Parameter

Determines whether the Auto Pre-Tune feature is activated on power up (disA = disabled, enAb = enabled). Auto Pre-Tune is useful when the process to be controlled varies significantly each time it is run. Auto Pre-Tune ensures that tuning occurs at the start of the process. Self-Tune may also be engaged to fine tune the controller. Display code = Apt, default setting = diSA.

Also refer to

Pre-Tune, Self-Tune

and

Tuning

Auxiliary Input

Type: General Definition

A secondary linear input option module. It can be used as a Remote Setpoint input or for Valve Position Indication. Signals can be mA, mV, VDC or Potentiometer.

Also refer to

Band Alarm 1 Value

Remote Setpoint

, and

Valve Position Indication

Type: General Parameter

This parameter is applicable only if Alarm 1 is selected to be a Band Alarm. It defines a band of process variable values, centred on the current actual setpoint value. If the process variable value is outside this band, the alarm will be active. This parameter may be adjusted from 1 to full span from the setpoint. Display code = bAL1, default value = 5.

Also refer to

Band Alarm 2 Value

Alarm Operation, Band Alarm 2 Value

and

Input Span

Type: General Parameter

This parameter, is similar to the Band Alarm 1 Value. It is applicable only if Alarm 2 is selected to be a Band Alarm. Display code = bAL2, default value = 5.

Also refer to

Alarm Operation, Band Alarm 1 Value and Input Span.

Bias (Manual Reset)

Type: Controller Tuning Parameter

Used to manually bias the proportional output(s) to compensate for process load variations. Bias is expressed as a percentage of output power and is adjustable in the range 0% to 100% (for Primary Output alone) or -100% to +100% (for both Primary and Secondary Outputs). This parameter is not applicable if the Primary output is set to ON/OFF control mode. If the process settles below setpoint use a higher Bias value to remove the error, if the process variable settles above the setpoint use a lower Bias value. Lower Bias values will also help to reduce overshoot at process start up. Display code = biAS, default value = 25%.

Also refer to

ON/OFF Control

and

PID

Bumpless Transfer

Type: Controller Definition

A method used prevent sudden changes to the output power level when switching between Automatic and Manual control modes. During a transition from Automatic to Manual, the initial Manual Power value will be set to equal the previous automatic mode value. The operator can then adjust the value as required. During a transition from Manual to Automatic, the initial Automatic Power value will be set to equal the previous manual mode value. The correct power level will gradually applied by the control algorithm at a rate dependant on the integral action resulting from the Automatic Reset time. Since integral action is essential to Bumpless Transfer, this feature is not available if Automatic Reset is turned off.

Also refer to

Cascade Control

Automatic Rest

and

Manual Mode

Type: Controller Definition

Applications with two or more capacities (such as heated jackets) are inherently difficult for a single instrument to control, due to large overshoots and unacceptable lags. The solution is to cascade two or more controllers, each with its own input, in series forming a single regulating device. The product setpoint temperature is set on the master controller. This is compared to the product temperature, and the master’s PID output (mA or VDC) is fed into a remote setpoint input on the slave. The RSP is scaled to suit any expected temperature. The slave loop’s natural response time should ideally be at least 5 times faster than the master.

In the example, the maximum input represents 400ºC, thus restricting the jacket temperature. At start-up the master compares the product temperature (ambient) to its setpoint (300ºC) and gives maximum output. This sets the maximum (400ºC) setpoint on the slave, which is compared to the jacket temperature (ambient) giving maximum heater output.

As the jacket temperature rises, the slave’s heater output falls. The product temperature also rises at a rate dependant on the transfer lag between the jacket and product. This causes the master’s PID output to decrease, reducing the ‘jacket’ setpoint on the slave, effectively reducing the output to the heater. This continues until the system becomes balanced.

When tuning a cascade system, first set the master to manual mode. Tune the slave

controller using proportional control only (I & D are not normally required) then return the master to automatic mode before tuning the master. The result is quicker, smoother control with minimum overshoot and the ability to cope with load changes, while keeping the jacket temperature within acceptable tolerances.

Also refer to

Remote Setpoint Upper Limit, Setpoint, Setpoint Select

Manual Mode, Master & Slave, PID, Remote Setpoint, Remote Setpoint Lower Limit

and

Tuning

Communications Write Enable

Type: General Definition

Enables/disables the changing of parameter values via the RS485 communications link, if the communications option is installed. Possible settings are read only or read/write. Display code = CoEn, default setting =

Control Type

r_ W

(read/write).

Type: Controller Parameter

Defines if a controller has one or two control outputs. Single outputs can drive the PV in one direction only (e.g. heat only, cool only, increase humidity etc). Dual outputs can force the PV to increase or decrease (e.g heat & cool, humidify and dehumidify etc). Dual control is not possible on Valve Motor Drive controllers Display codes = SnGL and duAL, default value = SnGL.

Also refer to and

Valve Motor Control

Controller

PID, Primary Proportional Band, Process Variable, Secondary Proportional Band

Type: Controller Definition

An instrument that can control a Process Variable, using either PID or On-Off control methods. Alarm outputs are also available that will activate at preset PV values, as are other options such as PV retransmission and Serial Communications.

Also refer to

Retransmit Output

Alarm Operation, Indicator, Limit Controller, On-Off Control, PID, Process Variable

and

Serial Communications

CPU

Type: General Definition

This stands for Central Processing Unit and refers to the onboard microprocessor that controls all of the measuring, alarm and control functions of the instrument.

Current Proportioning Control

Type: Controller Definition

Current proportioning control can be implemented on units configured with linear current or voltage output(s). It provides a 4 to 20mA, 0-20mA, 0 to 5V, 0 to 10V or 2 - 10V DC PID output. On-Off control should not be used with Current proportioning control.

Also refer to

Band

and

Cycle Time

On-Off Control, PID, Primary Proportional Band, Rate, Secondary Proportional

Time Proportional Control

Type: Controller Definition

For time proportioning outputs, it is used to define time period over which the average on vs. off time is equal to the required PID output level. Ct1, Ct2 and Ct3 are available when option slots 1, 2 or 3 are defined as time proportioning output types. The permitted range of value is 0.5, 1, 2, 4, 8, 16, 32, 64, 128, 256 or 512 seconds. Shorter cycle times will give better control, but at the expense of reduce life when used with an electromechanical control device (e.g. relays or solenoid valves). Display codes = Ct1, Ct2 and Ct3, default value = 32.

Also refer to

Deadband

- Refer to

PID

and

Time Proportioning

Overlap/Deadband

Type: Controller Parameter

Derivative

Refer to

Deviation Alarm 1 Value Type

Rate

Type: Controller Parameter

Type: General Parameter

This is applicable only if Alarm 1 is selected to be Deviation Alarm. A positive value (Deviation High) sets the alarm point above the current actual setpoint, a negative value (Deviation Low) sets it

below. If the process variable deviates from the setpoint by a margin greater than this value, alarm 1 becomes active. Display code = dAL1, Default value = 5.

Also refer to

Alarm Operation

and

Deviation Alarm 2 Value

Applicable only if Alarm 2 is selected as a Deviation Alarm. It is similar to Deviation Alarm 1 Value. Display code = dAL2. Default value = 5.

Also refer to

Differential (On-Off Hysteresis)

A switching differential used when one or both control outputs have been set to On-Off. This parameter is adjustable within the range 0.1% to 10.0% of input span; the default value is 0.5%. The differential band is centred about the setpoint. Relay chatter can be eliminated by proper adjustment of this parameter. Too large a value for this parameter will increase amplitude of oscillation in this process variable. Display code = diFp for primary only differential, diFS for secondary only differential & diFF for primary and secondary differential.

Also refer to

Direct/Reverse Action of Control Outputs

Direct action is typically used with cooling applications; On-Off direct outputs will turn on when the process variable exceeds setpoint. Proportional direct outputs will increase the percentage of output as the process value increases within the proportional band. Reverse action is typically used with heating applications; On-Off reverse outputs will turn off when the process variable exceeds setpoint. Proportional reverse outputs will decrease the percentage of output as the process value increases within the proportional band. The Secondary Output will be direct whenever the Primary Output is selected as reverse. The Secondary Output will be reverse whenever the Primary Output is selected as direct.

Also refer to

Proportional Band

Alarm Operation

Input Span

Control Type, On-Off Control, PID, Primary Proportional Band

Type: General Parameter

and

On-Off Control

Deviation Alarm 1 Value

Type: Controller Definition

Type: Controller Parameter

and

Secondary

Display Strategy

Alters the parameters displayed in normal operator mode. For example a controller could display PV + SP, PV + adjustable SP, PV + Ramping SP, PV only or SP only. Display strategy 6 will allow read only access to the setpoint values in Operator Mode, Setup Mode must then be entered to change the setpoint. Display code = diSp

Also refer to

Input Filter Time Constant

This parameter is used to filter out extraneous impulses on the process variable. The filtered PV is used for all PV-dependent functions (display control, alarm etc). The time constant is adjustable from

0.0 seconds (off) to 100.0 seconds in 0.5 second increments. Display code = FiLt, Default value = 2.0 seconds.

Also refer to

Input Range

This is the overall process variable input range and type as selected by the InPt parameter in Configuration Mode.

Also refer to

Process Variable, Setpoint

Process Variable

Input Span

and

Setpoint Ramping

Type: General Parameter

Type: General Definition

Input Span

Type: General Definition

The measuring limits, as defined by the Scale Range Lower and Scale Range Upper Limits. The trimmed span value is also used as the basis for calculations that relate to the span of the instrument (E.g. controller proportional bands)

Also refer to

Integral

Refer to

Latching Relay

Input Range, Scale Range Lower Limit

Automatic Reset

and

Scale Range Upper Limit

Type: Controller Tuning Parameter

Type: General Definition

A type of relay that, once it becomes active, requires a reset signal before it will deactivate. This output is available on Limit controllers and indicator alarms. To successfully deactivate a latched relay, the alarm or limit condition that caused the relay to become active must first be removed, then a reset signal can be applied. This signal may be applied from the instrument keypad, Digital Input or command via Serial Communication.

Also refer to

Communications

LED

Alarm Operation, Indicator, Limit Controller, Limit Hysteresis, Serial

Type: General Definition

Light Emitting Diode. LED’s are used as indicator lights (e.g. for the alarm indication). The upper and lower 7-segment displays are also LED’s.

Lock Codes

Type: General Parameter

Defines the four-digit codes required to enter Configuration (20), Set-Up (10), and Auto Tuning (0) modes. Display codes = cLoc, SLoc and tLoc, default values shown above in brackets.

Logical Combination of Alarms

Type: General Definition

Two alarms may be combined logically to create an AND/OR situation. Any suitable output may be assigned as a Logical Alarm Output, configured for Reverse-acting or Direct action.

Also refer to

Alarm Operation

Table 27.

Logical Alarm Outputs

Logical OR: Alarm 1 OR Alarm 2

Direct Acting Reverse-Acting

OFF OFF OFF OFF OFF ON

ON OFF ON ON OFF OFF

OFF ON ON OFF ON OFF

ALARM 1

ALARM 2

OUTPUT

ALARM 1

ALARM 2

OUTPUT

OFF

Logical AND: Alarm 1 AND Alarm 2

Direct Acting Reverse-Acting

OFF OFF OFF OFF OFF ON

ON OFF OFF ON OFF ON

OFF ON OFF OFF ON ON

ALARM 1

ALARM 2

OUTPUT

ALARM 1

ALARM 2

OUTPUT

OFF

Loop Alarm Enable

Type: Controller Parameter

Enables or disables a loop alarm. A loop alarm is a special alarm, which detects faults in the control feedback loop, by continuously monitoring process variable response to the control output(s). The loop alarm can be tied to any suitable output. When enabled, the loop alarm repeatedly checks if the control output(s) are at the maximum or minimum limit. If an output is at the limit, an internal timer is started: thereafter, if the high output has not caused the process variable to be corrected by a predetermined amount 'V' after time 'T' has elapsed, the loop alarm becomes active. Subsequently, the loop alarm mode repeatedly checks the process variable and the control output(s). When the process variable starts to change value in the correct sense or when the output is no longer at the limit, the loop alarm is deactivated.

For PID control, the loop alarm time 'T' is always twice the Automatic Reset parameter value. For On-Off control, a user defined value for the Loop Alarm Time parameter is used.

The value of 'V' is dependent upon the input type. For Temperature inputs, V = 2°C or 3°F. For Linear inputs, V = 10 least significant display units

Control output limits are 0% for Single output (Primary only) controllers and -100% for Dual output (Primary and Secondary) controllers.

Correct operation of the loop alarm depends upon reasonably accurate PID tuning. The loop alarm is automatically disabled during manual control mode and during execution of the Pre-Tune mode. Upon exit from manual mode or after completion of the Pre-Tune routine, the loop alarm is automatically re-enabled. Display code = LAEn,default value = diSA,

Also refer to

Loop Alarm Time, Manual Mode, On-Off Control, Pre-Tune

, and

Process Variable

Loop Alarm Time

Type: Controller Parameter

When On-Off control is selected and loop alarm is enabled, this parameter determines the duration of the limit condition after which the loop alarm will be activated. It may be adjusted within the range of 1 second to 99 minutes 59 seconds. This parameter is omitted from the Set-up mode display sequence if On-Off control is not selected or loop alarm is disabled. Display code = LAti, Default setting is 99:59.

Also refer to

mADC

Loop Alarm Enable

Type: General Definition

This stands for milliamp DC. It is used in reference to the DC milliamp input ranges and the linear DC milliamp outputs. Typically, these will be 0 to 20mA or 4 to 20mA.

Manual Mode

Type: Controller Definition

If Manual Mode is enabled in Set-Up mode, pressing the AM key in operator mode will cause a controller to enter or leave manual control mode. Switching between automatic and manual modes is achieved using bumpless transfer.

For standard Process Controllers Manual Mode operates as follows: The upper display shows the current process value, and the lower display shows the output power in the form - Pxxx (where xxx is equal to the percentage output power). This value may be adjusted using the UP or DOWN keys to increase/decrease the power output. The value can be varied between 0% to 100% for controllers using primary control only, and -100% to +100% for controllers using primary and secondary control (e.g. full heat power to full cool power).

Manual Mode should be used with care because the power output level is set by the operator, therefore the PID algorithm is no longer in control of the process. The operator MUST maintain the process as the desired level manually. Manual power is not limited by the Primary Power Output Limit.

Also refer to

Bumpless Transfer, Manual Mode Enable, PID

, and

Primary Output Power Limit

Manual Mode Enable

Type: Controller Parameter

Determines whether operator selection and de-selection of manual control is enabled. If the mode is enabled in Set-Up mode, pressing the AM key in Operator Mode will normally activate or deactivate manual control mode. However, disabling poen in while manual control mode is active will lock the controller into Manual Mode and pressing the Auto/Man key will no longer cause a return to PID (automatic) control. To exit from Manual Mode, poen must temporarily be re-enabled to allow PID control to be re-established. poen can then be safely disabled. It is possible to use a controller as a permanent “Manual Station” by disabling poen to deliberately lock it into Manual Mode. Manual Mode can also be selected using a digital input if one has been fitted and configured for this function. When in Manual Mode, the MAN LED indicator flashes.

Display code = PoEn, default setting = diSA....

Also refer to

Master & Slave

Manual Mode

and

PID

Type: Controller Definition

The terms master & slave are used to describe the controllers in applications where one instrument controls the setpoint of another. The master controller can transmit the setpoint to the slave using an analogue DC linear signal. The slave controller must have a matching a remote setpoint input. Some Profile Controllers can transmit their setpoint via serial communications serial communications. For this method, the Profiler must be able to act as a communications master device and the slave must have a compatible communications option fitted.

Also refer to

Setpoint

Cascade Control, Retransmit Output, Remote Setpoint, Serial Communications

Modulating Valve

A valve that can be positioned anywhere between fully closed and fully open by means of an incorporated motor. A typical application would be controlling temperature in a furnace heated by gas burners. Some modulating valve motors require linear (mA or VDC) signals to position the valve. These require standard Process Controllers (using PI control).

Offset

Offset is used to modify the measured process variable value and is adjustable in the range ±input span. Use this parameter to compensate for errors in the displayed process variable. Positive values are added to the process variable reading, negative values are subtracted. This parameter is in effect, a calibration adjustment; it MUST be used with care. Injudicious use could lead to the displayed value bearing no meaningful relationship to the actual process variable. There is no front panel indication of when this parameter is in use. Display value = OFFS, default value = 0.

Also refer to

On-Off Control

When operating in On-Off control, the output(s) will turn on or off as the process variable crosses the setpoint in a manner similar to a central heating thermostat. Some oscillation of the process variable is inevitable when using On-Off control. On-Off control can be implemented only with Time Proportioning Control (Relay, Triac or SSR driver output), by setting the corresponding proportional band(s) to zero. On-Off operation can be assigned to the Primary output alone (secondary output not present), Primary and Secondary outputs or Secondary output only (with the primary Output set for time proportional or current proportional control). On-Off control cannot be used on Valve Motor Drive controllers.

Also refer to

Proportional Band, Setpoint, Time Proportioning Control

Input Span, Process Variable

and

Tare

Type: VMD Controller Definition

Type: Controller Parameter

Type: Controller Definition

Differential, PID, Process Variable, Primary Proportional Band, Secondary

and

Valve Motor Drive Control

On-Off Differential (Hysteresis)

Refer to

Open Loop VMD

An “Open Loop” PID control algorithm does not require a position feedback signal from the valve in order to correctly control the process. Instead, the Process Variable’s deviation from the Setpoint is used to decide how long the valve open or close outputs should be energised (in relation to the Motor Travel Time) in order to bring the process under control. Even when position feedback is provided for Valve Position Indication, the controller does not use this signal when positioning the valve, so problems associated with faulty feedback signals are avoided.

Also refer to

Position Indication

Differential

Modulating Valve, Motor Travel Time, PID, Process Variable, Setpoint, Valve

and

Valve Motor Drive Control

Type: Controller Parameter

Type: VMD Controller Definition

Overlap/Deadban

Output 1

Output 2

Process Variable

Proportional Band 1

oportional

Proportional

Proportional Band 2

Proportional

Output 1

Output 2

Overlap

Deadband

Negative values

Positive values

DEADBAND WITH

ON/OFF Differential

Overlap/Deadband

Type: Controller Parameter

Defines the portion of the primary and secondary proportional bands (Pb_P + Pb_S) over which both outputs are active (Overlap), or neither is active (Deadband). It is adjustable in the range -20% to +20% of the two proportional bands added together. Positive values = Overlap, negative values = Deadband. This parameter is not applicable if the primary output is set for On-Off control or there is no Secondary Output. If the Secondary Output is set for On-Off, this parameter has the effect of moving the Differential band of the Secondary Output to create the overlap or deadband. When Overlap/Deadband = 0, the “OFF” edge of the Secondary Output Differential band coincides with the point at which the Primary Output = 0%. ). Display code = ΟΛ Also refer to

Band

OVERLAP WITH

PID

ΟΛ, default value = 0%.

ΟΛΟΛ

Differential, On-Off Control, Primary Proportional Band

Output Power (%) Output Power (%) Output Power (%)

and

Secondary Proportional

PID

OVERLAP &

ON/OFF

Band 1

(positive value)

(negative value)

Proportional Band 2 = 0

Output 2 OFF

Process Variable

Band 2

Output 2 ON

Figure 37. Overlap/Deadband

PI Control

Type: Controller Definition

Proportional and Integral (PI) Control is used to control Modulating Valves. It is similar to PID Control, but without Derivative (Rate) action that causes excessive valve movement. Also refer to

Modulating Valve, PID Control, Rate, Tuning

and

Valve Motor Drive Control

PID Control

Type: Controller Definition

Proportional Integral and Derivative control maintains accurate and stable levels in a process (e.g. temperature control). It avoids the oscillation characteristic of On-Off control by continuously adjusting the output to keep the process variable stable at the desired setpoint. Also refer to

Control Action, Control Type, Automatic Reset, Controller, Manual Mode, On-Off Control, PI Control, Primary Proportional Band, Process Variable, Rate, Secondary Proportional Band, Setpoint, Tuning

PLC

and

Valve Motor Drive Control

Type: General Definition

This stands for Programmable Logic Controller. A microprocessor based device used in machine control. It is particularly suited to sequential control applications, and uses “Ladder Logic” programming techniques. Some PLC’s are capable of basic PID control, but tend to be expensive and often give inferior levels of control.

Also refer to

PID

Control Power

Pre-Tune

engaged

+100% Power (HEAT output)

Initial PV

Process Variable

SP – Initial PV

Setpoint

100% Power (Cool output)

Pre-Tune

Type: Controller Definition

The Pre-Tune facility artificially disturbs the start-up pattern so that a first approximation of the PID values can be made prior to the setpoint being reached. During Pre-Tune, the controller outputs full Primary Power until the process value has moved approximately halfway to the setpoint. At that point, power is removed (or outputs full Secondary Power for Dual Control), thereby introducing an oscillation. Once the oscillation peak has passed, the Pre-Tune algorithm calculates an approximation of the optimum PID tuning terms proportional band(s), automatic reset and rate. The process is shown in the diagram below.

When Pre-Tune is completed, the PID control output power is applied using the calculated values. Pre-Tune limits the possibility of setpoint overshoot when the controller is new or the application has been changed. As a single-shot operation, it will automatically disengage once complete, but can be configured to run at every power up using the Auto Pre-Tune function. The Pre-Tune feature on Valve Motor Drive controllers always sets the Rate parameter to zero (OFF) because derivative action is not usually desirable in these applications. Pre-Tune will not engage if either primary or secondary outputs on a controller are set for On-Off control, during setpoint ramping or if the process variable is less than 5% of the input span from the setpoint. Pre-Tune Operation

Figure 38. Pre-Tune Operation

here

Also refer to

Auto Pre-Tune, Automatic Reset, Control Type, On-Off Control, Input Span, PID

Primary Proportional Band, Process Variable, Rate, Secondary Proportional Band, Self-Tune Setpoint, Setpoint Ramping, Tuning

Primary Output Power Limit

and

Valve Motor Drive Control

Type: Controller Parameter

Used to limit the power level of the Primary Output and may be used to protect the process being controlled. It may be adjusted between 0% and 100%. This parameter is not applicable if the primary output is set for On-Off control. Display code is OPhi, default value = 100%

Also refer to

On-Off Control

Primary Proportional Band

The portion of the input span over which the Primary Output power level is proportional to the process variable value. It may be adjusted in the range 0.0% (ON/OFF) to 999.9%. Applicable if Control Type is Single or Dual. For dual control a Secondary Proportional band is used for the second output. The Control Action can be Direct or Reverse acting. The Display value = Pb_P, default value = 5.0%.

Also refer to

Control Action, Control Type, On-Off Control, Input Span, Overlap/Deadband, PID Secondary Proportional Band

, and

Tuning

Type: Controller Tuning Parameter

Process High Alarm 1 Value

This parameter, applicable only when Alarm 1 is selected to be a Process High alarm, defines the process variable value above which Alarm 1 will be active. Its value may be adjusted between Scale Range Upper Limit and Scale Range Lower Limit. Display code = PHA1, Default value = Scale Range Upper Limit.

Also refer to

Lower Limit

Process High Alarm 2 Value

This parameter, applicable only when Alarm 2 is selected to be a Process High alarm. It is similar to the Process High Alarm 1 Value. Display code = PHA2, Default value = Scale Range Upper Limit.

Also refer to

Lower Limit

Process Low Alarm 1 Value

This parameter, applicable only when Alarm 1 is selected to be a Process low alarm, defines the process variable value below which Alarm 1 will be active. Its value may be adjusted between Scale Range Upper Limit and Scale Range Lower Limit. Display code = PLA1, Default value = Scale Range Lower Limit.

Also refer to

Lower Limit

Alarm Operation, Process High Alarm 2 Value, Process Variable, Scale Range

and

Scale Range Upper Limit

Alarm Operation, Process High Alarm 1 Value, Process Variable, Scale Range

and

Scale Range Upper Limit

Alarm Operation, Process Low Alarm 2 Value, Process Variable, Scale Range

and

Scale Range Upper Limit

Type: General Parameter

Process Low Alarm 2 Value

This parameter, applicable only when Alarm 2 is selected to be a Process low alarm. It is similar to the Process Low Alarm 1 Value. Display code = PLA2, default value = Scale Range Lower Limit.

Also refer to

Lower Limit

Process Variable (PV)

Process Variable is the variable to be measured by the primary input of the instrument. The PV can be any parameter that can be converted into a electronic signal suitable for the input. Common types are Thermocouple or PT100 temperature probes, or pressure, level, flow etc from transducers which convert these parameters into linear DC signals (e.g. 4 to 20mA). Linear signals can be scaled into engineering units using the

Also refer to

Process Variable Offset

- Refer to

Alarm Operation, Process Low Alarm 1 Value, Process Variable, Scale Range

and

Scale Range Upper Limit

Input Span, Offset, Scale Range Lower Limit

Offset

Scale Range Lower Limit

and

Scale Range Upper Limit

and

Scale Range Upper Limit

Type: General Parameter

Type: General Definition

parameters.

Type: General Parameter

Rate (Derivative)

Rate is adjustable in the range 0 seconds (OFF) to 99 minutes 59 seconds. It defines how the control action responds to the rate of change in the process variable. This parameter should not be used in modulating value applications as it can cause premature wear due to constant small adjustments to the valve position. The Rate parameter is not available if primary control output is set to On-Off. The Rate parameter is normally set to 0 seconds (OFF) on Valve Motor Drive controllers because derivative action is not usually desirable in these applications. Display code = rAtE, default value = 1.15.

Also refer to

Remote Setpoint (RSP)

Remote Setpoints use the Auxiliary Input option (a secondary analogue input) to adjust a controller’s setpoint using an external linear DC Voltage or mA input signal, or in some cases potentiometer or mV inputs. The Remote Setpoint value is constrained by the Setpoint Upper Limit and Setpoint Lower Limit settings in the same way as a local setpoint. Typical applications are Master/Slave and Cascade Control. Display code = RSP.

Also refer to

Limit, Remote Setpoint Upper Limit, Setpoint

Remote Auxiliary Input Range

Defines the type and range of the linear input signal (mADC, mVDC, VDC or potentiometer) for the Auxiliary Input. mVDC and potentiometer are only available with the Full Auxiliary input module. This input can be used for Remote Setpoint or Valve Position Indication Display code = RinP, default value = 0_10

Also refer to

On-Off Control, PID, Process Variable, Tuning

and

Type: Controller Tuning Parameter

Valve Motor Drive Control

Type: Controller Definition

Auxiliary Input, Cascade Control, Remote Input Range, Remote Setpoint Lower

and

0_10 for RSP inputs and Pot for Valve Position Indication.

0_100_10

Remote Setpoint, Setpoint

Setpoint Select

and

Valve Position Indication

Type: Controller Parameter

Remote Setpoint Lower Limit

Defines the value of the Remote Setpoint when the RSP input signal is at its minimum value (eg for a 4 to 20mA RSP, the value when 4mA is applied). It may be adjusted within the range -1999 to 9999; (decimal position same as for process variable input). However, the RSP value is always constrained within the Setpoint Upper Limit and Setpoint Lower Limits. Display code = rSPL, default value = PV input range minimum.

Also refer to

Remote Setpoint, Remote Setpoint Input, Remote Setpoint Upper Limit, Remote

Setpoint Offset, Setpoint

Remote Setpoint Upper Limit

Defines the value of the Remote Setpoint when the RSP input signal is at its maximum value (eg for a 4 to 20mA RSP, the value when 20mA is applied). It may be adjusted within the range -1999 to 9999; (decimal position same as for process variable input). However, the RSP value is always constrained within the Setpoint Upper Limit and Setpoint Lower Limits. Display code = rSPu, default value = PV input range maximum.

Also refer to

Remote Setpoint, Remote Setpoint Input, Remote Setpoint Lower Limit, Remote

Setpoint Offset, Setpoint

Remote Setpoint Offset

Used to adjust the Remote Setpoint input value. Positive values are added to the RSP reading, negative values are subtracted. It is adjustable in the range –1999 to 9999, but is constrained within the Scale Range Upper Limit and Scale Range Lower Limit.

and

Setpoint Upper Limit

and

Setpoint Upper Limit

and

Setpoint Lower Limit

and

Setpoint Lower Limit

Type: Controller Parameter

Display value = rSPo, default value = 0.

Also refer to

Remote Setpoint, Scale Range Upper Limit

and

Scale Range Lower Limit

Retransmit Output

A linear DC voltage or mA output signal, proportional to the Process Variable or Setpoint, for use by slave controllers or external devices, such as a Data Recorder or PLC. The output can be scaled to transmit any portion of the input or setpoint span.

Also refer to

Retransmit Output 1 Scale Maximum

Scales a linear output module in slot 1 that has been set up to retransmit PV or SP. Retransmit Scale Maximum defines the value of the process variable, or setpoint, at which the output will be at its maximum value. E.g. for a 0 to 5V output, the value corresponds to 5V. It may be adjusted within the range -1999 to 9999; the decimal position is always the same as that for the process variable input. If this parameter is set to a value less than that for Retransmit Output 1 Scale Minimum, the relationship between the process variable/setpoint value and the retransmission output is reversed. Display code = ro1H, default value = Scale Range Upper Limit.

Also refer to

Input Span, Master & Slave, Process Variable

Process Variable, Retransmit Output, Retransmit Output 1 Scale Minimum, Scale Range Upper Limit

Retransmit Output 1 Scale Minimum

Scales a linear output module in slot 1 that has been set up to retransmit PV or SP. Retransmit Scale Minimum defines the value of the process variable, or setpoint, at which the output will be at its minimum value. E.g. for a 0 to 5V output, the value corresponds to 0V. It may be adjusted within the range -1999 to 9999; the decimal position is always the same as that for the process variable input. If this parameter is set to a value greater than that for Retransmit Output Scale Maximum, the relationship between the process variable/setpoint value and the retransmission output is reversed. Display code = ro1L, default value = Scale Range Lower Limit.

Also refer to

Process Variable, Retransmit Output, Retransmit Output 1 Scale Maximum, Scale Range Lower Limit

and

Setpoint

Type: General Definition

and

Setpoint

Type: General Parameter

Retransmit Output 2 Scale Maximum

Defines the value of the process variable, or setpoint, at which Retransmit Output 2 will be at its maximum value. It is similar to Retransmit Output 1 Scale Maximum. Display code = ro2H, default value = Scale Range Upper Limit.

Also refer to

Range Upper Limit

Retransmit Output 2 Scale Minimum

Defines the value of the process variable, or setpoint, at which Retransmit Output 2 will be at its minimum value. It is similar to Retransmit Output 1 Scale Minimum. Display code = ro2L, default value = Scale Range Lower Limit.

Also refer to

Range Lower Limit

Process Variable, Retransmit Output, Retransmit Output 2 Scale Minimum, Scale

and

Setpoint

Process Variable, Retransmit Output, Retransmit Output 2 Scale Maximum, Scale

and

Setpoint

Type: General Parameter

Retransmit Output 3 Scale Maximum

Defines the value of the process variable, or setpoint, at which Retransmit Output 3 will be at its maximum value. It is similar to Retransmit Output 1 Scale Maximum. Display code = ro3H, default value = Scale Range Upper Limit.

Type: General Parameter

Also refer to

Range Upper Limit

Retransmit Output 3 Scale Minimum

Defines the value of the process variable, or setpoint, at which Retransmit Output 3 will be at its minimum value. It is similar to Retransmit Output 1 Scale Minimum. Display code = ro3L, default value = Scale Range Lower Limit.

Also refer to

Range Lower Limit

Reset

- Refer to

Scale Range Upper Limit

For linear inputs, this parameter is used to scale the process variable into engineering units. It defines the displayed value when the process variable input is at its maximum value. It is adjustable from -1999 to 9999 and can be set to a value less than (but not within 100 units of) the Scale Range Lower Limit, in which case the sense of the input is reversed. For thermocouple and RTD inputs, this parameter is used to reduce the effective range of the input. All span related functions work from the trimmed input span. The parameter can be adjusted within the limits of the range selected by Configuration Mode parameter inpt. It is adjustable to within 100 degrees of the Scale Range Lower Limit. Display code = rUL, default value = 1000 for linear inputs or range maximum for temperature inputs.

Also refer to

Process Variable, Retransmit Output, Retransmit Output 3 Scale Minimum, Scale

and

Setpoint

Type: General Parameter

Process Variable, Retransmit Output, Retransmit Output 3 Scale Maximum, Scale

and

Setpoint

Automatic Reset

Input Span, Process Variable

Type: Controller Tuning Parameter

Type: General Parameter

and

Scale Range Lower Limit

For linear inputs, this parameter can be used to display the process variable in engineering units. It defines the displayed value when the process variable input is at its minimum value. It is adjustable from -1999 to 9999 and can be set to a value more than (but not within 100 units of) the Scale Range Upper Limit, in which case the sense of the input is reversed. For thermocouple and RTD inputs, this parameter is used to reduce the effective range of the input. All span related functions, work from the trimmed span. The parameter can be adjusted within the limits of the range selected by Configuration Mode parameter inpt. It is adjustable to within 100 degrees of the Scale Range Upper Limit. Display code = rUL, default value = 0 for linear inputs, or range minimum for temperature inputs.

Also refer to

Secondary Proportional Band

The portion of the input span over which the Secondary Output power level is proportional to the process variable value. It may be adjusted in the range 0.0% (ON/OFF) to 999.9%. The Control action for the Secondary Output is always the opposite of the Primary output. The Secondary Proportional Band is only applicable when Dual Control Type is used. Display value = Pb_S, default value = 5.0%.

Also refer to

Input Span, Process Variable

Control Action, Control Type, On-Off Control, Input Span, Overlap/Deadband, PID

Primary Proportional Band

and

Tuning

and

Scale Range Upper Limit

Type: General Parameter

Type: Controller Tuning Parameter

Self-Tune

Temperature

Setpoint 1

Setpoint Change

Load Disturbance

Time

Setpoint

Type: Controller Tuning Definition

Self-Tune continuously optimises tuning while a controller is operating. It uses a pattern recognition algorithm, which monitors the process error (deviation). The diagram shows a typical application involving a process start up, setpoint change and load disturbance.

Figure 39. Self-Tune Operation

The deviation signal is shown shaded and overshoots have been exaggerated for clarity. The SelfTune algorithm observes one complete deviation oscillation before calculating a set of PID values. Successive deviation oscillation causes values to be recalculated so that the controller rapidly converges on optimal control. When the controller is switched off, the final PID terms remain stored in the controller's non-volatile memory, and are used as starting values at the next switch on. The stored values may not always be valid, if for instance the controller is brand new or the application has been changed. In these cases the user can utilise Pre-Tune to establish new initial values.

Use of continuous self-tuning is not always appropriate for applications which are frequently subjected to artificial load disturbances, for example where an oven door is likely to be frequently left open for extended periods of time. The Self-Tune feature on Valve Motor Drive controllers always sets the Rate parameter to zero (OFF) because derivative action is not usually desirable in these applications. Self-Tune cannot be engaged if a controller is set for On-Off Control.

Also refer to

Serial Communications Option

Minimum Motor On Time, On-Off Control, Pre-Tune, PID

, and

Tuning

Type: General Definition

An feature that allows other devices such as PC’s, PLC’s or a master controller to read or change an instruments parameters via an RS485 Serial link. Full details can be found in the Serial Communications sections of this manual.

Also refer to

Set Valve Closed Position

Controller, Indicator, Master & Slave, Limit Controller

and

PLC

Type: VMD Controller Parameter

When Valve Position Indication is to be used on Valve Motor Controllers, this parameter defines the input value that will be measured by the Auxiliary Input, when the valve is fully closed. The valve must driven to its “Closed” end stop before setting this parameter. It must not be used to limit valve movement, separate Valve Close and Open Limit parameters are available for this purpose. Display code = PcUL, default setting = Auxiliary Input Range Minimum.

Also refer to

Valve Motor Control

Auxiliary Input, Set Valve Opened Position, Valve Close Limit, Valve Open Limit

and

Valve Position Indication

Set Valve Opened Position

When Valve Position Indication is to be used on Valve Motor Controllers, this parameter defines the input value that will be measured by the Auxiliary Input, when the valve is fully opened. The valve must driven to its “Open” end stop before setting this parameter. It must not be used to limit valve movement, separate Valve Close and Open Limit parameters are available for this purpose. Display code = PcLL, default setting = Auxiliary Input Range Maximum.

Also refer to

Valve Motor Control

Setpoint

The target value at which a controller will attempt to maintain the process variable by adjusting its power output level. Controllers can have either one or two setpoints. These can be one or two local internal setpoints (SP or SP1 and SP2), or one local internal setpoint (LSP) and one externally adjusted remote (RSP) setpoint, if a Remote Setpoint module is fitted. The value of the setpoints can be adjusted between the Setpoint Upper Limit and Setpoint Lower Limits. The active setpoint is defined by the status of the Setpoint Select parameter or a digital input.

Also refer to

Auxiliary Input, Set Valve Closed Position, Valve Close Limit, Valve Open Limit

and

Limit Setpoint, Process Variable, Remote Setpoint, Scale Range Lower Limit

Setpoint Lower Limit, Setpoint Upper Limit

Setpoint Upper Limit

The maximum limit allowed for operator setpoint adjustments. It should be set to keep the setpoint below a value that might cause damage to the process. The adjustment range is between Scale Range Upper Limit and Scale Range Lower Limit. The value cannot be moved below the current value of the setpoint. Display code = SPuL, default value is Scale Range Upper Limit.

Also refer to

Limit

Scale Range Lower Limit, Scale Range Upper Limit, Setpoint

Valve Position Indication

and

Setpoint Select

Type: VMD Controller Parameter

Type: Controller Definition

Type: Controller Parameter

and

Setpoint Lower

Setpoint Lower Limit

The minimum limit allowed for operator setpoint adjustments. It should be set to keep the setpoint above a value that might cause damage to the process. The adjustment range is between Scale Range Lowe Limit and Scale Range Upper Limit. The value cannot be moved above the current value of the setpoint. Display code = SPLL, default value = Scale Range Lower Limit.

Also refer to

Limit

Setpoint Ramping Enable

Enables or disables the viewing and adjustment of the Setpoint Ramp Rate in Operator Mode. This parameter does not disable the ramping SP feature; it merely removes it from Operator Mode. It can still be viewed and adjusted in Setup Mode. To turn off ramping, the ramp rate must be set to OFF (blank). Display code = SPr, default setting = Disabled.

Also refer to

Setpoint Ramp Rate

The rate at which the actual setpoint value will move towards its target value, when the setpoint value is adjusted or the active setpoint is changed. With ramping in use, the initial value of the actual

Scale Range Lower Limit, Scale Range Upper Limit, Setpoint

Process Variable, Setpoint

and

Setpoint Ramp Rate

Type: Controller Parameter

and

Setpoint Upper

Type: Controller Parameter

setpoint at power up, or when switching back to automatic mode from manual control, will be equal to the current process variable value. The actual setpoint will rise/fall at the ramp rate set, until it reaches the target setpoint value. Setpoint ramping is used to protect the process from sudden changes in the setpoint, which would result in a rapid rise in the process variable. Display code = rP, default setting = OFF (blank).

Also refer to

Manual Mode, Setpoint, Setpoint Ramp Enable

and

Setpoint Select

Type: Controller Parameter

This Operator Mode parameter is available if the remote setpoint feature is in use and setpoint select is enabled, Setpoint Select defines whether the local or the remote setpoint will be the Active Setpoint. It can be set to diGi, LSP, or rSP. If a digital input has been configured for local/remote setpoint selection, the default setting is diGi. This means the status of the digital input will determine which setpoint is active. Otherwise the user can only choose LSP, or rSP. The active setpoint is indicated by prefixing its legend with the “_ “ character. E.g. the local setpoint legend is _____LSP, when it is active and LSP when it is inactive. If a digital input has been configured to select local/remote SP, setting Setpoint Select to LSP, or rSP will override the digital input and the active SP indication changes to *. Display code = SPS.

Also refer to

Setpoint Select Enable

Active Setpoint, Remote Setpoint, Setpoint

and

Setpoint Select Enable

Type: Controller Parameter

If the remote setpoint feature is in use, this determines whether operator selection of setpoints is enabled or disabled. If enabled, the Setpoint Select parameter is available in operator mode. If Setpoint Select is disabled again, the active setpoint will remain at its current status. Display code = SSEn, default setting = diSA (disabled).

Also refer to

Solid State Relay (SSR)

Remote Setpoint

and

Setpoint

Type: General Definition

An external device manufactured using two Silicone Controlled Rectifiers, which can be used to replace mechanical relays in most AC power applications. As a solid state device, an SSR does not suffer from contact degradation when switching electrical current. Much faster switching cycle times are also possible, leading to superior control. The instrument’s SSR Driver output is a time proportioned 10VDC pulse, which causes conduction of current to the load when the pulse is on.

Also refer to

Cycle

Time,

Time Proportioning Control, and Triac

Solenoid Valve

Type: General Definition

An electromechanical device to control gas or liquid flow. It has just two states, open or closed. A spring holds the valve closed until a current is passed through the solenoid coil forces it open. Standard Process Controllers with Time Proportioned outputs are used to control solenoid valves. Solenoid valves are often used with high/low flame gas burners. A bypass supplies some gas at all times, but not enough to heat the process more than a nominal amount (low flame). A controller output opens the solenoid valve when the process requires additional heat (high flame)..

Also refer to

Tare

Modulating Valves

and

Time Proportioning Control

Type: Indicator Parameter

When an Indicator’s Tare function has been enabled, the operator can set the current Process Variable input value to be displayed as zero. This function may be used to easily eliminate any offset on the input signal, e.g. when a transducer output is not giving a true zero value. It may also be used in applications displaying the weight of a product, to remove the weight of a container before starting. When Tare is activated, the instrument automatically sets the PV Offset to an equal, but opposite value to the current measured value.

Display code = tArE, default setting = diSA (disabled).

Also refer to

Indicator, Process Variable

, and

Offset

Three Point Stepping Control

Refer to

Time Proportioning Control

Time proportioning control is accomplished by cycling the output on and off, during the prescribed cycle time, whenever the process variable is within the proportional band. The control algorithm determines the ratio of time (on vs. off) to achieve the level of output power required to correct any error between the process value and setpoint. E.g. for a 32 second cycle time, 25% power would result in the output turning on for 8 seconds, then off to 24 seconds. This type of output might be used with electrical contactors, Solid State Relays Time proportioning control can be implemented with Relay, Triac or SSR Driver outputs for either primary (Heat) or secondary (Cool) outputs depending on hardware configuration.

Also refer to

Valve Motor Control

Current Proportioning Control, Cycle Time, PID, Primary Proportional Band

Process Variable, Secondary Proportional Band, Setpoint, SSR

Tuning

PID Controllers must be tuned to the process in order for them to attain the optimum level of control. Adjustment is made to the tuning terms either manually, or by utilising the controller’s automatic tuning facilities. Tuning is not required if the controller is configured for On-Off Control.

Also refer to

Automatic Reset, Auto Pre-Tune, On-Off control, PID, Pre-Tune, Primary

Proportional Band, Rate, Self-Tune

and

Secondary Proportional Band

Type: VMD Controller Definition

Type: Controller Definition

and

Triac

Type: Controller Definition

Triac

A small internal solid state device, which can be used in place of a mechanical relay in applications switching low power AC, up to 1 amp. Like a relay, the output is time proportioned, but much faster switching cycle times are also possible, leading to superior control. As a solid-state device, a Triac does not suffer from contact degradation when switching electrical currents. A triac cannot be used to switch DC power.

Also refer to

Valve Close Limit

When Valve Position Indication is to be used on Valve Motor Controllers, this parameter provides a “clamp” on the upper valve position, which the controller will not attempt to drive the valve past. It can be set between 0000 (fully closed) and the Valve Open Limit value –1, expressed as a percentage of the valve’s “fully open” position. The Auxiliary Input must correctly scaled using the Set Valve Open and Closed parameters before using this parameter. Display code = PiUL, default setting = 0.

Also refer to

Limit, Valve Motor Control

Cycle

Time,

SSR and Time Proportioning Control

Type: VMD Controller Parameter

Type: General Definition

Auxiliary Input, Set Valve Closed Position, Set Valve Open Position, Valve Open

and

Valve Position Indication

Valve Motor Drive Control

Type: VMD Controller Definition

Valve Motor Drive Controllers are designed to control Modulating Valves using a special “Open Loop” Valve Motor Drive (VMD) PI control algorithm. Output signals are provided to move the valve further open, or further closed when the process is higher or lower than the desired setpoint. When on setpoint, no output is required to maintain control unless load conditions change. This known as Three-Point Stepping control. Valve Position or Flow Indication is possible if an Auxiliary Input option module has been fitted and configured for this purpose.

Also refer to

Valve Position Indication

Auxiliary Input, Modulating Valve, Open Loop VMD, PI Control, PID, Setpoint

and

Valve Position or Flow Indication

Type: VMD Controller Definition

The Valve Motor Drive Controllers do not require any kind of position feedback in order for the PID algorithm to correctly control the process. However, where feedback or flow level signals are available, they can be displayed as a percentage (0000 to100

100) of the possible valve opening or flow

100100

level. Valve Position Indication is shown in the Operator Mode lower display in place of the Setpoint when the Display Strategy is set to 7. Valve Position Feedback is usually provided by means of a potentiometer linked to the valve. Potentiometers can be directly connected to the Full Auxiliary Input (Option Slot B only). Flow meters typically have linear 0-20/4-20mA or 0-5/0-10V signals, which can be used with either the Full Auxiliary Input or the Basic Auxiliary Input (Option Slot A only) of the 1/16 Din VMD Controllers. Even when position feedback is provided in this way, the information is not used by the Open Loop VMD control algorithm when positioning the valve, avoiding problems associated with faulty feedback signals.

Also refer to

Auxiliary Input, Display Strategy, Open Loop VMD, PID

, Set Valve Closed Position,

Set Valve Open Position, Setpoint, and Valve Motor Control.

Valve Open Limit

Type: VMD Controller Parameter

100 (fully open) and the Valve Closed Limit value +1, expressed as a

100100

percentage of the valve’s “fully open” position. The Auxiliary Input must correctly scaled using the Set Valve Open and Closed parameters before using this parameter. Display code = PiLL, default setting = 100

Also refer to

Limit, Valve Motor Control

Auxiliary Input, Set Valve Closed Position, Set Valve Open Position, Valve Close

and

Valve Position Indication

100.

100100

VMD

- Refer to

Valve Motor Control

Type: VMD Controller Parameter

SECTION 14: APPENDIX 2 – SPECIFICATION

14.1 Universal Input

General Input Specifications

Input Sample Rate: Digital Input Filter

Four samples/second.

0.0 (OFF), 0.5 to 100.0 seconds in 0.5 second increments.

time constant Input Resolution:

Input Impedance:

Isolation:

PV Offset: PV Display:

14 bits approximately. Always four times better than display resolution.

10V DC: 47KΩ 20mA DC: 5Ω Other ranges: Isolated from all outputs (except SSR driver). If single relay outputs are

connected to a hazardous voltage source, and the universal input is connected to operator accessible circuits, supplementary insulation or input grounding is required.

Adjustable ±input span. Displays process variable up to 5% over and 5% under span.

Greater than 10MΩ resistive

Thermocouple

Thermocouple Ranges Available

Sensor Type

J (default) -200 1200 -328 2192 1°

Range Min in °°°°C

Range Max in °°°°C

Range Min in °°°°F

Range Max in °°°°F

Resolution

J -128.8 537.7 -199.9 999.9 0.1° T -240 400 -400 752 1° T -128.8 400.0 -199.9 752.0 0.1° K -240 1373 -400 2503 1° K -128.8 537.7 -199.9 999.9 0.1° L 0 762 32 1403 1° L 0.0 537.7 32.0 999.9 0.1° N 0 1399 32 2551 1° B 100 1824 211 3315 1° R 0 1759 32 3198 1° S 0 1762 32 3204 1° C 0 2320 32 4208 1° PtRh20%:

PtRh40%

0 1850 32 3362 1°

Note:

Defaults to °F for USA units. Defaults to °C for no n-USA units. The Configuration Mode parameters, Scale Range Upper Limit and Scale Range Lower Limit, can be used to restrict range.

Thermocouple Performance

Calibration: Measurement

Accuracy:

Linearisation Accuracy:

Cold Junction Compensation:

Temperature Stability: Supply Voltage Influence: Relative Humidity Influence: Sensor Resistance Influence: Sensor Break Protection:

Complies with BS4937, NBS125 and IEC584. ±0.1% of full range span ±1LSD.

NOTE: Reduced performance for B Thermocouple from 100 to 600°C. NOTE: PtRh 20% vs PtRh 40% Thermocouple accuracy is 0.25% and has reduced performance below 800°C.

Better than ±0.2°C any point, for 0.1° resolution ranges (±0.05°C typical). Better than ±0.5°C any point, for 1° resolution ranges.

Better than ±0.7°C under reference conditions. Better than ±1°C under operating conditions.

0.01% of span/°C change in ambient temperature.

Negligible.

Thermocouple 100Ω: <0.1% of span error. Thermocouple 1000Ω: <0.5% of span error.

Break detected within two seconds. Process Control outputs turn OFF (0% power); Valve Control “Close” outputs turn on; Limit outputs turn off (goes into Exceed condition); Alarms operate as if the process variable is over-range.

Resistance Temperature Detector (RTD)

RTD Ranges Available

Range Min in °°°°C

-128.8 537.7 -199.9 999.9 0.1°

-199 800 -328 1472 1° (default)

Range Max in °°°°C

Range Min in °°°°F

Range Max in °°°°F

Resolution

Note:

Scale Range Upper Limit and Scale Range Lower Limit Configuration Mode parameters can be used to restrict range.

Despatch P1400 Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual