Wiring The Terminal Strip - Siemens SINAMICS G120 Operating Instructions Manual

Installing
4.4 Installing Control Unit
4.4.5

Wiring the terminal strip

NOTICE
Damage to the inverter when using long signal cables
Using long cables at the inverter's digital inputs and 24 V power supply can lead to
overvoltage during switching operations. Overvoltages can damage the inverter.
• If you use cables of more than 30 m at the digital inputs and 24 V power supply, connect
Requirements
● Use suitable cables:
– Solid or flexible cables.
– Suitable cable cross-section: 0.5 mm² (21 AWG) to 1.5 mm² (16 AWG).
● Do not use end sleeves.
● You have found an appropriate pre-assignment for the terminal strips, which you can now
use to wire the inverter.
See also Section Selecting the pre-assignment for the terminal strip (Page 60).
● You have the appropriate tools:
– Small screwdriver to open the spring-loaded terminals
– Tool for stripping the cables
64
an overvoltage protection element between the terminal and the associated reference
potential.
We recommend using the Weidmüller overvoltage protection terminal with designation
MCZ OVP TAZ DIODE 24VDC.
When completely connecting up the unit, we recommend cables with a cross-section
of 1 mm² (18 AWG).
Converter with the CU250S-2 Control Unit (vector)
Operating Instructions, 06/2013, FW V4.6, A5E31759476B AB