Siemens SINAMICS G120D - Grounding Converter and Motor

Installation
3.5 Grounding converter and motor
SINAMICS G120D converter
Getting Started, 07/2016, FW V4.7 SP6, A5E38556189B AA
25
3.5
Grounding converter and motor
Grounding the converter
● Ground the converter via the PE connection in the mains supply connector.
● Ground the connectors as shown in the diagram below.
Image 3-5 Grounding the line supply and motor connectors
•
Connect the PE terminal on the left-hand side
of the converter to the metal frame it is
mounted on.
•
Recommended cable cross section: 10 mm²
•
Use a short wire connection preferably.
•
Clean the connection to the steel construction
from paint or dirt.
•
Use a ring clamp to ensure a good physical
connection which is resistant to accidental
disconnection.
Grounding the motor
● Ground the motor via the PE connection in the motor connector.
● Ground the connector as shown in the diagram above (grounding the converter).
Although the line and motor connectors are of a different type, the principle of grounding
them is the same.
● If possible, ground the motor housing.