Descriptions of functions
10.11 Safety shutdown (E-STOP)
SINAMICS DCM DC Converter
Operating Instructions, 12/2018, A5E34763375A
557
Operation enable (enable) – Control word bit 3
The enable signal is HIGH active (log. "1" state = enable).
Control word bit 3 and terminal X177.13 (enable) are logically ANDed. See also function
diagram 2580.
Procedure for applying operation enable (if a switch-on command is present):
1. With positive brake-release time (p50087):
The "Release holding or operational brake" signal (r53210.0 = 0) is output and p50087 is
awaited in operating state o1.0.
With negative brake-opening time (p50087 negative):
Go immediately to step 2; brake is still closed (r53210.0 = 1)
2. The ramp-function generator, n controller, and I controller are enabled.
3. Operating state o0 is reached.
4. Once a negative brake-release time (p50087) has elapsed, the "Release holding or
operational brake" (r53210.0 = 0) signal is output.
Procedure for withdrawing operation enable:
1. The ramp-function generator, n controller, and I controller are disabled.
2. Reduction in armature current
3. The armature firing pulses are disabled.
4. The "Close operational brake" signal is output (r53210.0 = 1, where p50080 = 2).
5. Operating state o1.0 or higher is reached.
6. The drive coasts down (or is decelerated by the operational brake).
7. Once n < nmin (p50370, p50371), the "Close holding brake" signal is output
(r53210.0 = 1, where p50080 = 1).
-STOP function is not an EMERGENCY STOP function in the sense of EN 60204-1.
The E-STOP function forces the "line contactor closed" relay to drop out, activating the relay
contact (terminals XR1-109 and -110) for the main contactor control within approximately
15 ms, independent of the semiconductor components and Control Unit (CUD) functions. If
the CUD is operating correctly, applying I = 0 via the controller serves to disconnect the line
contactor from the power supply. The drive coasts down once E-STOP has been applied.
The E-STOP function is triggered when the switch between terminals XS1-105 and XS1-106
is opened.
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