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Carel MRK00000D0

Carel MRK00000D0
44 pages
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µRack
Standard compressor racks single/two circuit
User manual
NO POWER
& SIGNAL
CABLES
TOGETHER
READ CAREFULLY IN THE TEXT!

Table of Contents

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Carel MRK00000D0 Specifications

General IconGeneral
Controller TypeElectronic expansion valve controller
Protection ratingIP20
Power Supply24 VAC/VDC
Communication ProtocolModbus
Output typeRelay, 0-10V

Summary

WARNINGS

1 Product

1.1 General functions

Lists key functionalities of the product, including pressure reading, compressor management, and fan control.

3 Starting the unit

3.1 Starting for the first time

Details the initial power-up procedure and default value loading for the unit.

4 Compressor management

4.3 Compressor control

Details proportional band and dead band control methods for compressor activation/deactivation.

4.5 Compressors with different capacities

Manages systems with compressors of varying capacities for finer control.

5 Fan and inverter management

5.1 Fan management

Overview of fan operation based on discharge pressure and rotation settings.

5.3 Inverter management

Explains how to manage fan speed using an inverter, including control modes and parameters.

5.5 Floating condenser control

Manages condenser fan operation based on condensing pressure and ambient temperature.

6 Various settings

6.6 Prevent high discharge pressure

A safety function to prevent unit shutdown by gradually reducing capacity under high discharge pressure.

7 Alarm management

7.5 Alarms from analogue inputs: temperature probe and pressure transducer

Specific alarms generated by analogue inputs like temperature and pressure probes.

8 The supervisor network

10 List of parameters

14 Supervisor management

17 Technical specification

19 Appendix: Compressor rack controller, examples of application diagrams

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