X1 Functional Ground - Siemens SINAMICS S120 Equipment Manual

Booksize power units

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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.

SINAMICS S120 Booksize Power Units

Equipment Manual, (GH2), 07/2007, 6SL3097-2AC00-0BP5

Circuit diagram: Voltage Clamping Module

installation panel in the immediate vicinity of the line filter.

Booksize DC Link Components

5.4 Voltage Clamping Module