Installing The 24V Power Supply - Siemens SINAMICS G110M Operating Instructions Manual

Installation
4.2 System Installation
Grounding the Terminal Housing
To ensure that the Inverter is properly grounded and protected, an earthing cable MUST be
fitted to the Terminal Housing of the G110M system.
● Connect the PE terminal on the left-hand side of the inverter 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 4-4
4.2.1

Installing the 24V power supply

Introduction
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).
At the base of the 24 V PSU housing is a cable gland opening (which is sealed with a
blanking plug) which provides and entry point for the cables from an external braking
resistor.
54
Terminal Housing PE terminal
Distributed converter for SIMOGEAR geared motors
Operating Instructions, 06/2016, FW V4.7.6, A5E31298649B AG