Siemens SINAMICS S120 System Manual page 52

High Frequency Modules
5.4 HF Sine Filter Module
The HF Drive with a pulse frequency of 16 kHz can also be operated with 32 kHz. This increases
the damping properties of the system.
HF Choke Module
The HF Choke Module contains the reactor of the sine-wave filter. It has a terminal block to
connect the power cables to the motor and a terminal block to connect the Voltage Protection
Module (VPM).
The following signals are acquired in the HF Choke Module, and transferred to the
HF Damping Module for monitoring and diagnostics:
• Temperature of the HF Choke Module (reactor temperature) via the KTY temperature sensor
• Overtemperature trip
HF Damping Module
The HF Damping Module contains the capacitors of the sine-wave filter. Further, part of the
filter power loss is fed back into the DC link via this module. This is the reason that this module
must be connected with the DC link.
4 measured values are acquired in the HF Damping Module, and transferred to the Control Unit
via DRIVE-CLiQ:
• Filter currents in all 3 phases of the filter capacitors
• Damping voltage
• Device temperature
• Temperature of the HF Choke Module via the KTY temperature sensor
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High Frequency Drive
System Manual, 10/2020, 6SL3097-5AH10-0BP0