Power Components On The Motor Side; Motor Reactors; Description; Safety Instructions For Motor Reactors - Siemens SINAMICS S110 Manual

Power components on the motor side

6.1

Motor reactors

6.1.1

Description

Motor reactors reduce the voltage stress on the motor windings by reducing the voltage
gradients at the motor terminals that occur when motors are fed from drive converters. At the
same time, the capacitive re-charging currents that additionally load the output of the Power
Module when longer motor cables are used are simultaneously reduced.
The motor reactors for Power Modules PM240-2, FSA - FSE, are suitable for a pulse
frequency of 4 kHz. Higher pulse frequencies are not permissible.
6.1.2

Safety instructions for motor reactors

Danger to life if the fundamental safety instructions and residual risks are not heeded
Failure to heed the fundamental safety instructions and residual risks in Chapter 1 can
result in accidents causing severe injuries or death.
• Follow the fundamental safety instructions.
• Consider the residual risks on the risk assessment.
Danger of fire through overheating for insufficient ventilation clearances
Insufficient ventilation clearances can result in overheating with danger to persons as a
result of smoke and fire. Further, increased failures can occur and the service life of
units/systems may be shortened.
• It is essential that you maintain 100 mm ventilation clearances above and below the
SINAMICS S110
Manual, 07/2015, 6SL3097-4AC10-0BP5
WARNING
WARNING
component.
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