Converter Operation; Supply Line Configuration; Converter Input Voltage - Siemens SIMOTICS FD 1LH1 Operating Instructions & Installation Instructions

Preparations for use

4.19 Converter operation

4.19 Converter operation
The following chapter is relevant only if the machine has been ordered for converter operation.
Note
The order number shows whether the machine was ordered for converter operation. In this
case, digits 1, 2, 3 or 4 is located at the 6th position of the order number.
4.19.1

Supply line configuration

NOTICE
Asymmetric voltage load during operation on a TN system in delta connection
An asymmetric voltage load of the machine winding can occur during operation on a TN
system in delta connection with a grounded line conductor. Winding damage can result.
● Do not operate the machine on a TN system with a grounded line conductor.
NOTICE
Ground fault during operation on an IT system
If a ground fault occurs when connected to an IT supply system, the insulation is excessively
stressed. Winding damage can result.
● If possible, complete the process within two hours.
● Rectify the fault cause.
● Deploy a ground fault monitoring.
4.19.2

Converter input voltage

The insulation system of SIMOTICS machines always complies with the requirements of stress
category C (IVIC C = high stress). If voltage peaks higher than those specified according to
IVIC C can occur, then please contact your Siemens partner:
● For a line supply voltage (converter input voltage) up to max. 480 V, and when controlled
● For line voltages (converter input voltages) higher than 480 V, motors, which are ordered for
● Operation with a converter from another manufacturer: Comply with the permissible voltage
48
from a SINAMICS G/SINAMICS S converter with uncontrolled/controlled infeed: Comply
with the guidelines for configuring motor and converter.
converter operation, have an appropriate insulation system.
peaks according to IEC 60034-18-41 in accordance with stress category C, dependent on
the particular line voltage (converter input voltage) and the motor insulation system.
SIMOTICS FD 1LH1
Operating Instructions 01/2019