Safe Brake Ramp (Sbr) - Siemens Sinamics S120 Function Manual

Description of Safety Integrated functions
4.2 Safety Integrated Extended Functions
4.2.17

Safe Brake Ramp (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 with the functions "SS1
with/without encoder," "SLS without encoder," SS2 and 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 decelerated with 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).
– As soon as the delay time (p9556) has elapsed.
● For SS2:
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
– As soon as the actual speed drops below the newly selected SLS level and has
Additional specific functions (e.g. STO, new SLS speed limit, etc.) are activated at this point,
depending on the Safety Integrated function used.
144
Or:
Or:
remained there for the time parameterized in p9582.
Function Manual, (FHS), 07/2016, 6SL3097-4AR00-0BP6
Safety Integrated