Safe Brake Ramp (Sbr) - Siemens SINAMICS G130 Manual

Safety Integrated Extended Functions

6.10 Safe Brake Ramp (SBR)

6.10 Safe Brake Ramp (SBR)
General description
Note
The "Safe Brake Ramp" (SBR) safety function can only be used without an encoder and
should be used only with asynchronous motors.
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 when using the "SS1 without
encoder" and "SLS without encoder" functions.
Functional features of "Safe Brake Ramp" without encoder
The motor is immediately decelerated with the OFF3 ramp as soon as SS1 or SLS is
triggered (if setpoint speed limitation is used). Monitoring of the brake ramp is activated once
the delay time in p9582/p9382 has elapsed. Monitoring ensures that the motor does not
exceed the set brake ramp (SBR) when braking. Deactivation of the safe monitoring of the
brake ramp occurs according to the following basic conditions:
● for SS1:
● for SLS:
Additional specific functions (e.g. STO, new SLS speed limit, etc.) are activated at this point,
depending on the Safety Integrated Function used.
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as soon as the speed drops below the shutdown speed (p9560/p9360).
– as soon as the set brake ramp has reached the new SLS level
or
– as soon as the actual speed has fallen below the newly selected SLS level and has
remained there for the time parameterized in p9582/p9382.
Safety Integrated
Function Manual, 05/2010, A5E03264275A