Siemens SINAMICS S120, Function Manual

Page: 692 / 1094

Safety Integrated Basic Functions
10.6 Safe Brake Control (SBC)
Drive functions
692
Function Manual, 11/2017, 6SL3097-4AB00-0BP5
There are two options for registering this power unit with the system:
● Automatic brake identification when commissioning the system for the first time
–
Requirements:
- No Safety Integrated functions enabled
- p1215 = 0 (no motor holding brake available)
– During the first commissioning, SINAMICS checks at which power unit an SBA is
connected. If precisely one SBA is found, the number of the power unit is entered into
parameter p7015.
If several SBAs are found at the parallel-connected power units, message "F07935
drive: Motor holding brake configuration error" is output.
– For devices in the chassis format, if the SBA feedback signal (SBA_DIAG) is read in
via an input of the power unit, then in addition, this digital input is automatically
entered into parameter p9621.
● Manually defining the power unit
–
Enter the component number of the power unit, to which the SBA is connected, into
parameter p7015. If no SBA is connected to the power unit, faults are detected when
controlling the motor holding brake and fault F01630 is output.
– In parameter p9621 (p9621 = BICO interconnection to r9872.3), enter the digital input
of the power unit to which the SBA is connected and via which the SBA feedback
signal (SBA_DIAG) is read in.
Note
Disconnecting the brake cable for service purposes
As long as the brake is permanently released and not actuated, it is possible to briefly
disconnect the brake cable, e.g. for service purposes, and not receive fault messages. In the
case of a fault, message F07935 is only output when the brake is controlled.