Siemens SINAMICS S120 Function Manual page 587

There are two options for registering this power unit with the system:
1. Automatic brake identification when commissioning the system for the first time
2. Manually defining the power unit
Drive functions
Function Manual, (FH1), 01/2013, 6SL3097-4AB00-0BP3
– 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.
– Copy the value entered in parameter p9621 to parameter p9821.
– 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, errors are detected when
controlling the motor holding brake and fault F01630 or F30630 is output.
– In parameters p9621/p9821, enter the digital input via which the SBA feedback signal
(SBA_DIAG) is read in.
Note
No check for correct connection of the SBA
In operation, SINAMICS does not check whether the Safe Brake Adapter (SBA) is
correctly connected at the specified power unit; it is therefore possible, e.g. for service
purposes, that a brake cable is briefly withdrawn without an error message being
output. Only when controlling the brake, in the case of a fault, message F07935
("Drive: Motor holding brake configuration error") is output.
Safety Integrated basic functions
9.6 Safe Brake Control (SBC)
585