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Eurotherm 903 Series User Manual

Eurotherm 903 Series
157 pages
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Contents
Guide to this Handbook
Section 1
Section 2
Section 3
Section 4
Section 5
Section 6
Section 7
Appendix
INSTALLATION
OPERATION
COMMISSION
CONFIGURE
CALIBRATION
COMMUNICATIONS
ERROR MESSAGES
Glossary of Terms
0
Copyright Eurotherm Limited 1991
Every effort has been taken to ensure the accuracy of this handbook. However in order to
maintain our technological lead we are continuously improving our products which could, without
notice, result in amendments or omissions to this document. We cannot accept responsibility for
damage, injury loss or expenses resulting therefrom.
902-904 Handbook
HA023752 Iss 9

Table of Contents

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Eurotherm 903 Series Specifications

General IconGeneral
Control AlgorithmPID with auto-tune
MountingPanel mount
Control ModesPID, On/Off
Input TypesThermocouple, RTD
Output TypesRelay, SSR
DisplayLED
Communication ProtocolsModbus
Power Supply100-240V AC
Dimensions96x96mm

Summary

Installation Guide

1.0 INSTALLATION

Details on how to install the instrument, including panel mounting and sealing.

Operation Overview

2.0 CONNECTIONS AND WIRING

Details on making electrical connections to the instrument via rear terminals.

2.2 Rear Terminal Connections

Diagram and explanation of the rear terminal connections for various functions.

2.2.1 Power Supply

Information on connecting the instrument's power supply, including voltage ranges.

Commissioning Procedures

2.2.2 Inputs

Details on connecting various sensor types like thermocouples, RTDs, and pyrometers.

2.2.3 Heat / Process [+] Outputs (Channel 1)

Information on configuring relay, triac, logic, and DC outputs for Channel 1.

2.2.4 Cool / Process[-] Output (Channel 2)

Information on configuring relay, triac, logic, and DC outputs for Channel 2.

Configuration Settings

2.2.6 Alarm Outputs

Details on configuring alarm outputs for channels 2, 3, and 4.

2.2.8 Digital Inputs

Information on connecting and activating digital inputs for various functions.

Calibration Procedures

2.2.11 Digital Communications

Configuration for RS232 C and RS422 digital communication standards.

3.0 SAFETY and EMC INFORMATION

Important safety precautions, EMC compliance, and handling guidelines.

TECHNICAL SPECIFICATION

Summary of the instrument's technical specifications and ratings.

Instrument Operation

1.1 Front Panel Keys

Explanation of the function of each key on the instrument's front panel.

1.2 Access Levels & Security

Details on different access levels and security features to protect configuration.

1.3 Operation

Overview of how to read and set parameters using the instrument's controls.

Instrument Configuration

2.0 AUTO/MANUAL

Instructions for switching between automatic and manual operating modes.

3.0 SETPOINTS

Information on different types of setpoints and how to select them.

Advanced Operation Features

3.4 Operating a Programme

Explanation of how to use stored programmes for automated control sequences.

Communication Protocols

4.0 TUNING

Methods for tuning the controller's PID parameters for optimal performance.

4.1 Selection of Tuning

Guidance on selecting between self-tune and adaptive tune features.

Error Handling and Faults

5.0 ALARMS

Information on the types and configuration of the instrument's alarms.

7.0 SENSOR FAULTS

How the instrument detects and responds to sensor faults.

Supplementary Information

8.0 DIGITAL INPUT FUNCTIONS

Description of how digital inputs are triggered and their associated functions.

Advanced Configuration Options

4.2.1 Cl INPUT (Cl q ABCD)

Details on configuring the input type, including CJC and mains noise rejection.

4.2.2 C2 CHANNEL 1 and 2 (C2 = ABCD)

Configuration options for channels 1 and 2, including PID and VP control.

4.2.3 C3 CHANNEL 3 AND 4 AND ALARM DEFINITION (C3 = ABCD)

Configuring channels 3 and 4, and defining alarm behavior.

4.2.4 C4 CONTROL OPTIONS (C4 = ABCD)

Setting up control options like programmer, PID polarity, and derivative action.

Parameter and Communication Configuration

4.2.7 C7 DIGITAL COMMUNICATIONS (C7 = ABCD)

Configuring digital communication settings like baud rate, parity, and comms type.

4.2.8 C8 ANALOGUE COMMUNICATIONS (C8 = ABCD)

Configuring analogue communication hardware types and functions.

Control and System Configuration

4.2.9 C9 SELECTION OF RUN, HOLD, RESET AND TUNER

Configuring run, hold, reset, and tuning functions for front/rear operation.

Instrument Calibration and Security

6.0 SECURITY CODES

Explanation of security codes S1 and S2 for accessing advanced configuration.

5.0 CALIBRATION TECHNIQUE

General guidelines and requirements for performing instrument calibration.

Instrument Calibration Details

Advanced Calibration and Protocols

Communication Standards and Data Formats

Communication Modes and Parameters

Status Words and Protocols

Industrial Communication Protocols

5.0 J BUS AND MODBUS

Details on J-Bus and Modbus communication protocols.

Error Messages and Troubleshooting

Error Message Fault Description

Table detailing error messages, fault descriptions, and necessary corrective actions.

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