Wiring Diagrams - ABB CMS-660 User Manual

18 CMS-660 SYSTEM CIRCUIT MONITORING SYSTEM (CMS)
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Wiring Diagrams

The operations to carry out for the correct connection of the device are described in this section.
The CMS-660 control unit requires a 24 V DC external power supply.
Installation
Installation of CMS-660 to the 24 V DC supply shall include a switch or circuit breaker for the
connection to the supplying device, or the installation of the supplying device shall include a switch or
circuit breaker for the connection to mains. The switch or circuit breaker must be suitably located and
easily reachable and must be marked as the disconnecting device for the CMS-660.
Disconnection from supply or connection to supply
Switch off circuit breaker or switch before disconnecting or connecting.
Attention: The installation and the cabling of the device must be carried out by qualified personnel.
Danger of electrocution, burning and electric arc. Use the personal protection devices suitable to
adhere to the current regulations governing electrical safety. Prior to carrying out any connections
check the disconnection of the electric supply with a voltage detection device.
CMS DIGITAL
BUS INPUT
CMS-660
Control Unit
Status
Network
USB
Reset
RS 485 24 V DC
A B + –
0.5 – 0.6 Nm
4.4 – 5.3 lb-in
Push-in spring
connection