X1 Functional Ground - Siemens SINAMICS S120 Equipment Manual

DC link components
11.4 Voltage Clamping Module (VCM)
Figure 11-15 Circuit diagram: Voltage Clamping Module
11.4.3.2

X1 functional ground

X1 functional ground
To ensure that the Voltage Clamping Module functions properly, a functional ground must be
connected to X1. Please note:
● The cables must be routed via the shortest possible path
● Cross-section: 4 mm² to 16 mm²
● When a line filter is used, the functional ground should be located on the metallic
● In systems without a line filter, it should be connected on the PE busbar.
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installation panel in the immediate vicinity of the line filter.
Booksize cold-plate power units
Manual, (GH4), 03.2007, 6SL3097-2AJ00-0BP4