Wiring Terminal Strips - Siemens SINAMICS G120 CU240B-2 Operating Instructions Manual

Connecting
3.4 Installing Control Unit
If you wish to use several fail-safe digital inputs of the inverter, this is described in the Safety
Integrated Function Manual. You will find the link to the Safety Integrated Function Manual in
Section Overview of documentation (Page 13).
Additional information on fail-safe digital inputs is available in Chapter Permitted sensors
(Page 214).
3.4.4

Wiring terminal strips

Solid or flexible cables are permitted as signal lines. Wire end ferrules must not be used for
the spring-loaded terminals.
The permissible cable cross-section ranges between 0.5 mm² (21 AWG) and 1.5 mm² (16
AWG). When completely connecting-up the unit, we recommend cables with a cross-section
of 1mm² (18 AWG).
Route the signal lines so that you can again completely close the front doors after
connecting-up the terminal strip. If you use shielded cables, then you must connect the
shield to the mounting plate of the control cabinet or with the shield support of the inverter
through a good electrical connection and a large surface area.
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Inverter with CU240B-2 and CU240E-2 Control Units
Operating Instructions, 07/2010, FW 4.3.2, A5E02299792B AA