Parameterizing The Converter; Converter Input Voltage; Reducing Bearing Currents During Operation With Converter (Low Voltage) - Siemens SIMOTICCS A 1FU9 Operating Instructions Manual

Preparing for use
4.11 Converter operation
4.11.1

Parameterizing the converter

• If the design of the motor requires connection to a particular converter type, the rating plate
will contain corresponding additional information.
• Correctly parameterize the converter. Parameterizing data can be taken from the machine
rating plates.
You can also find parameter data here:
– Operating instructions for the converter.
– SINAMICS Configuration Manuals.
• Do not exceed the specified limit rotational speed n
plate n
• Check that the machine is cooled sufficiently for commissioning purposes.
4.11.2

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, contact the Service Center.
• For a line supply voltage (converter input voltage) up to max. 480 V, and when controlled
from a SINAMICS G/SINAMICS S converter with uncontrolled/controlled infeed: Comply with
the guidelines for configuring motor and converter.
• The insulation system of the machines is not suitable for a line voltage (converter input
voltage) greater than 480 V.
• Operation with a converter from another manufacturer: Comply with the permissible voltage
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.
NOTICE
Material damage caused by an excessively high supply voltage
The insulation system will be damaged if the supply voltage is too high for the insulation
system. This can completely destroy the machine.
• Comply with the peak voltages as laid down in the guidelines above.
4.11.3

Reducing bearing currents during operation with converter (low voltage)

Taking the following actions will reduce the bearing currents:
• Ensure that the contacts are made over a large area. Solid copper cables are not suitable for
high-frequency grounding because of the skin effect.
• Install the equipotential bonding conductor in parallel with the motor cable, as close as
possible and avoid creating any loops.
36
on the supplementary plate for converter operation as the highest speed.
max
. You can either find this on the rating
max
Operating Instructions, 07/2020, A5E46712792A
1FU9