14-6
IM CW120-E
14.1 Specifications of CW120/121
Current inputs (H/L)
CW120: 2 pair jacks for banana plugs (safety
terminals)
CW121: 3 pair jacks for banana plugs (safety
terminals)
External control input/output
3 screw-less terminals (H/L/H)
RS-485 4 M3 screw terminals (+/–/SG/TM)
Connectors
RS-232 Miniature DIN 8 pins
AC power supply 2 pins
Standard accessories 3 (CW120) or 4 (CW121) voltage-sensing
probes
Power cord
User’s Manual
Simple setting software
Safety standards: Compliant with EN61010-1, EN61010-2-031
• Voltage input line
Overvoltage category III
(Max. input voltage: 600 Vrms)
• Power line
Overvoltage category II
(Max. input voltage: 264 Vrms)
Pollution degree 2
EMC (emission): Compliant with EN55011, Group 1, Class A;
EN61326; EN61000-3-2; EN61000-3-3
The user must implement adequate measures to
prevent influences from radio noise emission if
necessary.
Conditions of cable
Measured input
When using “Voltage Input Probes” and
“Current-sensing Clamps” supplied with the
CW120.
External control input and output
Shield cable: less than 3m
EMC (immunity): Compliant with EN61326
Performance criterion under immunity test
environments: B (self-returnable performance
deterioration)
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