Grounding The Terminal Housing; Installing The 24V Power Supply - Siemens SINAMICS G110M Operating Instructions Manual

4.2.4

Grounding the terminal housing

Description
To ensure that the converter is properly grounded and protected, an earthing cable must be
fitted to the Terminal Housing of the converter.
• Connect the PE terminal on the left-hand side of the converter to appropriate grounding
point of the installation.
• Use a short wire connection.
• Clean the connection to the steel construction from paint or dirt.
• Use a ring clamp to terminate the cable to ensure a good physical connection which is
resistant to accidental disconnection.
Figure 4-5
4.2.5

Installing the 24V power supply

Overview
The optional 24 V PSU allows the user to draw the necessary 24 V to power the internal
electronics of the Control Module direct from the converters DC link voltage. This has the
advantage that no external cabling is required and therefore, only a 3-phase mains supply cable
is required.
The following electronics are powered by the optional 24 V PSU:
• Internal circuits in the Control Module (CM).
• Low voltage components in the Power Module (PM).
• All input and output, for example the digital outputs on the Communications and Power
Interface (CPI).
Distributed converter for SIMOGEAR geared motors
Operating Instructions, 10/2020, FW V4.7 SP13, A5E31298649B AL
Terminal Housing PE terminal
Installation
4.2 System Installation
55