Voltage Protection Module (Vpm); Description - Siemens SINAMICS S120 System Manual

Voltage Protection Module (VPM)

5.1

Description

The Voltage Protection Module (VPM) is used to limit the voltage when using synchronous
motors. It is directly connected to the HF Choke Module.
If the line voltage fails at the maximum motor speed or the pulses at the HF Motor Module
are canceled as a result of the power failure, the motor regenerates at a high voltage into the
DC link.
The Voltage Protection Module measures the motor voltage. If the rectified motor voltage is
> 800 V, an armature short-circuit is triggered. The motor is decelerated by the short-circuit.
The energy remaining in the motor is converted to heat.
A VPM 200 Dynamik is used as Voltage Protection Module in a High Frequency Drive.
Table 5- 1
Type
Signaling interface
PE connection
Load connecting bolt, input
Load connecting bolt, output
High Frequency Drive
System Manual, (SH2), 04/2015, 6SL3097-4AH10-0BP3
VPM 200 Dynamik interface overview
5
Quantity
1
4
5
5
73