Efficient Networks Siemens Sinamics S120 - Manual (Page 465)

Applications
11.6 Application: emergency stop with power failure and/or emergency stop (Servo)
Drive Functions
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
465
11.6 Application: emergency stop with power failure and/or emergency stop
(Servo)
11.6.1 Introduction
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, for example,
provided that the DC link voltage is available. The following section describes how all the
drives carry out an emergency stop (OFF3) if the power fails.
11.6.2 Description
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Figure 11-8 Example: interconnection of emergency stop due to power failure or emergency off
In addition to the component wiring shown above, each drive object that is to carry out an
emergency stop if the power fails needs to be parameterized. If parameterization is not