Sbc For Motor Modules In The Chassis Format - Siemens SINAMICS S120 Function Manual

Safety Integrated basic functions
9.6 Safe Brake Control (SBC)
Response time with the "Safe Brake Control" function
For the response times when the function is selected/deselected via input terminals, see the
table in "Response times".
Note
Controlling the brake via a relay for "Safe Brake Control":
If you use "Safe Brake Control", it is not permissible that you switch the brake via a relay, as
this could initiate brake control faults.
9.6.1

SBC for Motor Modules in the chassis format

To be able to set higher power in the brakes of devices of this format, an additional Safe
Brake Adapter (SBA) module is needed. For more information about connecting and wiring
the Safe Brake Adapter, refer to the "SINAMICS G130/G150/S120 Chassis/S120 Cabinet
Modules/S150 Safety Integrated" Function Manual.
Using parameters p9621/p9821, you can define via which digital input the Safe Brake
Adapter's feedback signal (brake released or applied) is channeled to the Control Unit.
To evaluate the feedback signal contacts, you must maintain the wait times as a result of the
relay. Parameters p9622/p9822 are pre-assigned the relay-specific minimum wait times:
● p9622[0] = p9622[0] ≙ enable wait time
● p9622[1] = p9622[1] ≙ disable wait time
Further functionality and the activation of the brake, i.e. reaching the safe status, are in this
case the same as the above described procedure for booksize devices.
Safe Brake Control with power units in a parallel connection
Note
SBC for parallel connection of power units
Safe Brake Control with power units in a parallel connection is available if r9771.14 = 1.
If you wish to use SBC with SBA for chassis format power units connected in parallel, then it
is only permissible that you connect precisely one SBA to a power unit in the parallel
connection. The Safe Brake Adapter and therefore the brake are controlled via this power
unit.
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Function Manual, (FH1), 01/2013, 6SL3097-4AB00-0BP3
Drive functions