Carel IR32S User Manual

CONTENTS
General features . . . . . 1
Models available . . . . . 1
Main features of the Infrared Series . . . . 2
Front panel and buttons . . . . . 4
LED display - Indicators . . . . . 4
Keypad . . . . . 5
Installation . . . . . 6
Standard configuration . . . . . 6
Cautions . . . . . 7
Selection of the main working parameters - Other important parameters . . . 8
List of the working parameters to be checked before starting the unit . . . 9
How to modify the working parameters . . . . 10
Gaining access - How to modify the parameters . . . . 10
How to exit the procedure - How to exit the procedure without memorizing the modified data . . 10
Reset procedure . . . . . 11
Remote control unit . . . . . 12
Technical specifications - Keypad description . . . . 12
Buttons used to activate/deactivate the use of the remote control unit . . . 12
Buttons used to modify the main parameters (directly accessible buttons) . . . 13
Buttons for the remote control of the IR instruments . . . . 13
How to use the remote control unit . . . . 13
Access without code . . . . . 13
Access with code . . . . . 14
Further information . . . . . 15
Configuration parameters - The password . . . . 15
/ = parameters for the management of the temperature sensors . . . 16
r = parameters for the temperature regulation . . . . 18
c = parameters for the compressor management . . . . 19
d = parameters for the defrost management . . . . 21
A = parameters for the alarm control . . . . 24
F = parameters for controlling evaporator fans . . . . 28
Summary diagram of the evaporator fan operation . . . . 29
Notes for the new release . . . . . 31
Wiring diagrams . . . . . 34
Wiring diagram for multiple units - IR32 panel mounting connections . . . 34
Operating states of the equipment . . . . 38
Sequence of main phases . . . . . 38
Alarms and troubleshooting . . . . . 39
What to do if the IR32S, IRDRSE/S0 fails to work . . . . 41
What to do if the IR32Y fails to work . . . . 41
What to do if the IR32P or IR32C, IRDRC fails to work . . . 43
Technical characteristics . . . . . 44
Temperature/resistance ratios for NTC thermistors. . . . 48
IR32 dimensions . . . . . 50
Code numbers for ordering controls and accessories . . . 51
IR96: microprocessor-based freezer controller . . . . 53
New functions . . . . . 53
Technical features -- Connections . . . . 55
Ir96: keys functioning . . . . . 56
Functioning . . . . . 56
IR96: parameters . . . . . 58
Parameters modification . . . . . 58
New-set values memorisation . . . . . 58
List of parameters . . . . . 59
Description of particular parameters and performances . . . 61
Memorisation of minimum/maximum temperature . . . . 61
Functioning of the relay 4 . . . . . 61
Type of sensor - Digital Inputs Configuration . . . . 61
IR96: alarms . . . . . 62
Dimensions . . . . . 62

Carel IR32S Specifications

General

Model	IR32S
Type	Controller
Number of Inputs	32
Communication Protocols	Modbus RTU
Mounting Type	DIN rail
Protection	IP20
Buzzer	Yes
Display	LCD
Serial ports	1
Operating temperature	-10 to +50 °C
Storage temperature	-20°C to +70°C
Relative humidity	0 to 95% (non-condensing)

Summary

Infrared Series General Features

Model Overview and Descriptions

Details the various IR32 models and their specific functionalities.

Installation and Configuration

Standard Configuration and Setup

Parameter Settings and Modification

Guides on selecting, modifying, and understanding working parameters.

Operating States and Troubleshooting

Equipment Operating States and Alarms

Troubleshooting Common Issues

Guides on diagnosing and resolving common alarms and operational issues.

IR96 Controller Overview

New Functions and Features

IR96 Parameter and Button Functionality

IR96 Parameter List and Modification

Comprehensive list and description of all configurable parameters for the IR96.

IR96 Alarms and Troubleshooting

IR96 Alarm Signals

Covers alarm signals, error codes, and their meanings for the IR96.

IR96 Troubleshooting