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Eliwell EW974 User Manual

Eliwell EW974
23 pages
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ENGLISH
EN
Electronic controllers for refrigeration units
EW961/971/974
set
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Eliwell EW974 Specifications

General IconGeneral
Frequency50/60 Hz
Front Panel ProtectionIP65
Input Type4-20mA
Power Supply24V AC/DC
Relay Output8A/250V AC
Accuracy±1 digit
Resolution0.1 °C/°F or 1 °C/°F depending on the probe and configuration
Serial CommunicationRS485 (optional)
Protection DegreeIP20
Temperature RangeDepending on the probe used

Summary

Keys and LEDs

UP Key

Controls menu navigation and value increase.

DOWN Key

Controls menu navigation and value decrease.

SET (ENTER) Key

Accesses menus, confirms commands, displays alarms.

Menu Access and Operation

Setting the Set Point

How to view and modify the Set point value.

Programming Menu Access

How to enter and navigate the Programming menu.

Alarms

Alarm E1: Probe1 Faulty

Describes fault, cause, effects, and remedy for Probe1 failure.

Alarm E2: Probe2 Faulty

Describes fault, cause, effects, and remedy for Probe2 failure.

Manual Defrost and Diagnostics

Copy Card Operations

Temperature Alarm Conditions

Relative Temperature Alarms

Conditions for alarms based on relative temperature values.

Conditions of Use and Technical Data

Further Information

Mechanical Characteristics and Regulations

Table of Parameters

Compressor Parameters

Parameters related to compressor operation, timing, and protection.

Defrost Parameters

Parameters controlling defrost type, interval, and duration.

Evaporator Fan Parameters

Parameters for fan operation, stop temperature, and delay.

Alarm Parameters

Parameters for setting alarm thresholds and delays.

Configuration Parameters

Parameters for device configuration, inputs, and button functions.

Supervision and Connectivity

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