Product Overview; Intended Use - ABB CMS-660 User Manual

CMS-660 SYSTEM CIRCUIT MONITORING SYSTEM (CMS)
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Product Overview

Intended use

The CMS-660 control unit is a measurement instrument for current
branch monitoring, up to 32 branch sensors.
The system consists of a control unit and sensors.
The sensors measure alternating, direct and mixed currents (TRMS) up to 80 A and are connected to
the control unit by a flat cable, the CMS-Bus. Up to 32 sensors can be connected to each CMS-660
control unit.
The two-channel digital input allows the integration of SPD and Breaker status ensuring up-to date
information on the system. CMS-660 also allows to get the temperature value through open-core
sensors.
The measurement data can be analyzed via RS485 interface with Modbus RTU protocol.
A micro-USB port located on the front of the device is designed for configuration and operation.
CMS-Bus (32 sensors)
Micro-USB port
CMS-660
Control Unit
Status
Network
USB Reset
+ −
Digital input
24 V DC Power supply
Serial RS485 port: Modbus RTU
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