Voltage Protection Module Vpm; Description - Siemens SINAMICS S120 Manual

Motor-side power components

10.2 Voltage Protection Module VPM

10.2 Voltage Protection Module VPM
10.2.1

Description

The Voltage Protection Module (VPM) is a component for limiting voltage. It is used for both
1FE1 and 2SP1 motors and those with an electromagnetic force (EMF) of between 800 V
and 2000 V to limit DC-link voltage if a fault occurs.
The Voltage Protection Module is installed within the motor cable between the Motor Module
and motor. If the line voltage fails at the maximum motor speed or the pulses at the Motor
Module are canceled as a result of the power failure, the motor regenerates at high voltage
into the DC link. The Voltage Protection Module recognizes that the motor voltage is too high
(> 800 V) and uses an electronic switch to short-circuit the three phases of the motor at its
supply lines. The power remaining in the motor is converted to heat via the short circuit
between the Voltage Protection Module and motor cables.
The Voltage Protection Module is available in 3 versions.
Table 10- 9
Designation
VPM120
VPM200
VPM200 Dynamic
Table 10- 10 Interface overview for Voltage Protection Modules
Type
Signaling interface
PE connection
Load connecting bolt, input
Load connecting bolt, output
572
Overview of the Voltage Protection Modules available
Rated current
120 A
200 A
200 A
Number
VPM120/VPM200
1
2
3
3
Manual, (GH2), 07/2016, 6SL3097-4AC00-0BP8
Number
VPM200 Dynamic
1
4
5
5
Booksize Power Units