Motor-side power components
10.2 Voltage Protection Module VPM
Booksize Power Units
586 Manual, (GH2), 07/2016, 6SL3097-4AC00-0BP8
Connecting signaling contact X3
The signaling contact X3 must be wired before connecting the power cables.
Figure 10-15 Connection of the signaling contact using the VPM200 as an example
The X3 signaling contact is routed via a bistable relay. The relay may shift to the other
switching state if subjected to excessive movement during transportation and installation.
This may prevent the system from starting.
Damage as the short-circuit thyristor is still conducting
When a Voltage Protection Module is tripped and the short-circuit thyristor is still conducting
before the converter is switched on again, then this can result in damage to the system.
• The motor must have come to a standstill.
• Signal contact X3 must have closed again.
• Check that the thyristor is in a no voltage condition.
Cause and rectification of faults
The "Installation" sections in the documents referred to below contain additional information
on the causes of faults and how they can be rectified:
● Operating Instructions for Voltage Protection Module VPM120, Article No.:
A5E00302281B
● Operating Instructions for Voltage Protection Module VPM200, Article No.:
A5E00777655A
● Operating Instructions for Voltage Protection Module VPM200 Dynamic, Article No.:
A5E00302261B
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