Application: Emergency Stop With Power Failure And/Or Emergency Stop (Servo) - Siemens SINAMICS S120 Function Manual

Applications

11.9 Application: emergency stop with power failure and/or emergency stop (Servo)

11.9 Application: emergency stop with power failure and/or emergency stop
(Servo)
If the power fails, a drive line-up normally responds with OFF2 even when a Control Supply
Module is used in conjunction with a Braking Module (i.e. the connected motors coast down).
The Control Supply Module provides the electronics with power via the supply system or DC
link. In this way, controlled movements can be made if a power failure occurs provided that
the DC link voltage is still available. The following section describes how all the drives carry
out a quick stop (OFF3) if the power fails.
Figure 11-12 Example: interconnection of quick stop due to power failure or emergency off
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Function Manual, (FH1), 10/2008, 6SL3097-2AB00-0BP5
Drive functions