Sbr - Siemens SINUMERIK MC Commissioning Manual

Safety functions integrated in the drive

4.9 SBR

4.9 SBR
The Safe Brake Ramp (SBR) function provides a safe method for monitoring the brake ramp.
The Safe Brake Ramp function is used to monitor braking for functions "SS1 with/without
encoder," "SLS without encoder" - as well as for STOP B / STOP C (for Safety with encoder).
For SLS, the setpoint limiting of the Safety Integrated Functions (r9733) must be connected to
the ramp-function generator (p1051/p1052).
Features
The motor is immediately braked along the OFF3 ramp as soon as SS1, SS2, or SLS is
triggered. Monitoring of the brake ramp is activated once the delay time in p9582 has elapsed.
Monitoring ensures that the motor does not exceed the set brake ramp (SBR) when braking.
The safe monitoring of the brake ramp is deactivated
● For SS1:
– As soon as the speed drops below the shutdown speed (p9560).
Or:
– As soon as the SS2 delay time (p9552) has elapsed.
● For SLS:
– As soon as the set brake ramp has reached the new SLS level
Or:
– As soon as the actual speed drops below the newly selected SLS level and has remained
Additional specific functions (e.g. STO, new SLS speed limit, etc.) are activated at this point,
depending on the Safety Integrated Function used.
130
there for the time parameterized in p9582.
Safety Integrated (with SINAMICS S120)
Commissioning Manual, 02/2020, A5E46305916B AB