Off3 (Quick Stop) - Control Word Bit 2 - Siemens SINAMICS DCM Operating Instructions Manual

Descriptions of functions
10.7 Switch on, switch off, enable
10.7.3

OFF3 (quick stop) - control word bit 2

The OFF3 signal is LOW active (log. "0" state = quick stop).
Procedure for applying "Quick stop":
1. The ramp-function generator is disabled.
2. A speed setpoint of zero is applied.
3. Deceleration along the down ramp acc. to p50296, p50297, p50298
4. Wait until n < nmin (p50370, p50371).
5. "Close operational or holding brake" (r53210.0 = 1) is output.
6. Wait for brake-closing time (p50088)
7. The ramp-function generator and speed controller are disabled.
8. Reduction in armature current
9. The armature firing pulses are disabled.
10. The "Line contactor closed" relay (terminal XR1-109 and -110) drops out.
11. Operating state o9.0 or higher is reached.
12. The wait time for field-current reduction (p50258) elapses.
13. The field is reduced to a parameterizable value (p50257).
Procedure for withdrawing "Quick stop":
1. Remove "Quick stop" command.
2. Apply the "Shutdown" command (e.g. using the "Switch on/Shutdown" terminal).
3. The system exits operating state o8.
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Operating Instructions, 1.2012, C98130-A7066-A1-05-7619
SINAMICS DCM DC Converter