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Preparing for use
4.13 Converter operation
1LE7 shaft heights 71 ... 315
Operating Instructions, 04/2022, A5E51689275A-AA
39
4.13
Converter operation
4.13.1
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 motor
rating plates.
You can find parameter data here:
–
In the operating instructions for the converter.
–
In the SIZER engineering tool
–
In the SINAMICS Configuration Manuals.
• Do not exceed the specified maximum speed limit
n
max
.
• Set the skip frequency band between 38 Hz and 48 Hz (both inclusive) for
SH
315
two-pole 1LE7 motors when operating on VFD.
• Check that the motor is cooled sufficiently for commissioning purposes.
4.13.2
Converter input voltage
The insulation system of SIMOTICS motors always complies with the requirements of stress
category B (IVIC B = high stress). If voltage peaks higher than those specified according to
IVIC B 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.
• Operation with a converter from another manufacturer: Comply with the permissible
voltage peaks according to IEC 60034-18-41 in accordance with stress category B,
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 motor.
• Comply with the peak voltages as laid down in the guidelines above.