Eliwell EWRC 500 LX - User Manual

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INTRODUCTION

This section is designed to get you up and running in the shortest possible

time. It contains basic information on the EWRC300 – 500LX.

Should you need more detailed information, please refer to the remainder

of the manual.

Out of the box, the EWRC300 – 500LX is set up for standard Electrical

Defrost applications.

It can be altered for Hot Gas or Off Cycle applications if needed.

INPUTS / OUTPUTS DEFAULT SETTINGS

Output relays (default settings)

• Out (relay) 1 = Compressor (or liquid line valve)

• Out (relay) 2 = Defrost

• Out (relay) 3 = Evaporator fan

• Out (relay) 4 = Alarm (EWRC500LX only)

• Out (relay) 5 = Light (EWRC500LX only)

Note: It is possible to change the function of each relay, see parameters

H21 to H25

Probe Inputs

• Pb1 = Regulation Probe

• Pb2 = Defrost Termination Probe

• Pb3 = Not required (except in special applications)

MECHANICAL ASSEMBLY

a) Remove the coverplate on the right side of the door, pressing lightly on

the points indicated by the arrows in Figure 1 and open the door.

b) Drill holes in the backplate at the top or bottom to pass the wires through.

See the example in figure 2.

c) Screw the backplate to the wall using 4 screws (not supplied) to match the

holes illustrated in Figure 3.

d) Shut the door by securing it with the 2 screws provided.

Replace the screw caps removed earlier from the door (see point a).

e) The door lock (an optional accessory) can be installed in 3 different

positions on the door, the holes to be drilled are indicated on the back.

Each position on the door represents a different position where the

disconnector can be mounted.

N.B.: to make it easier to wall mount the backplate, remove the door by pres-

sing lightly on the left side (the side that the door is attached by). You will

also have to separate the base from the keypad by disconnecting the keypad

cable.

EWRC 300-500 LX

yy • Quick Start

WIRING DIAGRAM

GND

485+

485-

RS-485

RS-485/TTL

Keyboard

Line

Neutral

Ground

EWRC 300-500 LX

Pb2

Pb1

Pb3

DI2

DI1

1 2 3

Line

Neutral

Ground

230V

Removable

Connectors

Faston

LINE

NEUTRAL

Copy

Card

Bus

Adapter

RS 485

TTL

EWRC500LX only

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Summary

Introduction to EWRC 300-500 LX

Mechanical Assembly and Installation

Wiring Diagram and Connections

Inputs and Outputs Default Settings

Output Relays Configuration

Describes default relay functions for compressor, defrost, fan, alarm, and light.

Probe Inputs Identification

Lists default probe inputs for regulation, defrost termination, and auxiliary.

Device Display Overview

Device Keys and Functions

Device Status LEDs

Parameter Configuration

Changing the Set Point

Guide to adjusting the regulation set point value using the device buttons.

Accessing User Level Parameters

Steps to access and modify user-level parameters on the device.

Accessing Installer Level Parameters

Procedure to access advanced installer-level parameters and folders.