Siemens SINAMICS S120 Manual page 580

Motor-side power components
10.2 Voltage Protection Module VPM
Figure 10-10 Connection example for Voltage Protection Module VPM200
Cable lengths
The maximum length of the power cable between the Motor Module and the Voltage
Protection Module is 1.5 m and must not include any switching elements.
The power cable between the Voltage Protection Module and the motor must not exceed a
length of 50 m.
Signaling contact
Signaling interface X3 on the Voltage Protection Module is wired to a digital input (DI) on the
Control Unit, which controls this spindle. If more than one Voltage Protection Module is used,
each X3 terminal is wired to the respective Control Unit. If an armature short-circuit occurs,
the pulses of the axis involved must remain inhibited. To do this, the connected digital input
is interconnected to control bit OFF2 (pulse inhibit) (see SINAMICS S120/S150 List Manual).
The signaling interface is operated with +24 V.
580
Booksize Power Units
Manual, (GH2), 07/2016, 6SL3097-4AC00-0BP8