Siemens SINAMICS DCM Operating Instructions Manual page 398

Descriptions of functions
10.7 Switch on, switch off, enable
Procedure for shutting down the drive:
1. Apply the "Shutdown" command (e.g. using the "Switch on/Shutdown" terminal).
2. Deceleration along the ramp-function generator ramp
3. Wait until n < nmin (p50370, p50371).
4. The "Close holding or operational brake" (r53210.0 = 1) signal is output.
5. The brake-closing time (p50088) is awaited.
6. The ramp-function generator and n controller are disabled.
7. Reduction in armature current
8. The armature firing pulses are disabled.
9. The "Line contactor closed" relay (terminal XR1-109 and XR1-110) drops out.
10. Operating state o7.0 or higher is reached.
11. The wait time for field-current reduction (p50258) elapses.
12. The field is reduced to a parameterizable value (p50257).
"Switch on/Shutdown" overview
p50087 Brake-release time (positive in this case)
p50088 Brake-closing time
p50258 Wait time for automatic field-current reduction
Figure 10-33 Switch on/Shutdown
● An internal interlock becomes active once n < nmin (r50370, r50371) for the first time.
● Whether level triggering or pulse triggering is selected has an overriding effect on "Switch
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This stops the drive from attempting to decelerate again if the motor is rotated by external
influences; the n < nmin message then disappears.
on", "Shutdown", and "Creep".
Operating Instructions, 1.2012, C98130-A7066-A1-05-7619
SINAMICS DCM DC Converter