Siemens SINAMICS G150 Operating Instructions Manual page 466

Functions, Monitoring, and Protective Functions
9.2 Drive Functions
Features
● Automatic activation by means of sequence control
● Standstill (zero-speed) monitoring
● Forced brake release (p0855, p1215)
● Application of brake for a 1 signal "unconditionally close holding brake" (p0858)
● Application of brake after "Enable speed controller" signal has been canceled (p0856)
Signal connections
The holding brake is controlled using free digital outputs on the Control Unit or the TM31 (for
option G60). If necessary, control must be realized by means of a relay to connect a holding
brake with higher voltage or with higher power demand.
For this, parameter p1215 must be set to "3" (motor holding brake the same as sequence
control, connection via BICO) and the appropriate BICO parameters of the selected digital
outputs must be interconnected.
Commissioning
If p1215 is set to "0" (no brake available) during initial commissioning and a connected brake
is recognized, simple brake control is activated automatically (p1215 = 1). In this case, fault
F07935 "Motor holding brake detected" appears and must be acknowledged.
CAUTION
If parameter p1215 is set to "0" (no brake available) when a brake is actually present, the
drive operates against applied brake. This can destroy the brake.
Notes on setting the release (opening) time (p1216):
● The release time (p1216) should be set longer than the actual release time of the holding
Notes for setting the closing time (p1217):
● The closing time (p1217) should be set longer than the actual closing time of the holding
● If the closing time (p1217) is set too low compared to the actual closing time of the
● If the closing time (p1217) is set too high compared to the actual closing time of the
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brake. As a result, the drive will not accelerate when the brake is closed.
brake. As a result, the pulses are suppressed only after the holding brake is closed.
holding brake, the load may drop suddenly.
holding brake, the controller acts against the holding brake and thus reduces its service
life.
Converter cabinet units
Operating Instructions, 03/2012, A5E03263466A