Siemens SINAMICS S120 Function Manual page 145

Starting SBT
1. Selection
You have the following options for the selection of the Safe Brake Test:
– Selection via BICO using a 0/1 signal edge at DI for p10230[0]
– Selected via fieldbus (SCC):
– Selected using forced checking procedure (test stop) of the Extended Functions:
Note
When selected via DI (BICO) and selected via fieldbus (SCC, S_STW3B bit 0), then the
sequence of the subsequently described steps 2 to 5 must be carefully observed.
Note
Only brake 1 when selecting via forced checking procedure (test stop)
When selecting using forced checking procedure (test stop), only the internal motor
holding brake parameterized as brake 1 is tested with test sequence 1 in the direction
parameterized in p10218.
It is not possible to use the brake test together with the "Automatic test stop when
powering up" function.
The pulses must be enabled when SBT is selected. When selected, the speed actual
value must not exceed 1 % of the maximum speed (p1082) - and over the complete
course of the SBT, it must not exceed a value of 10 % of the maximum speed.
The brake(s) must be open.
2. Wait for feedback signal, r10231[0] = 1
3. Select brake and test sequence
Make the following decisions before starting the brake test sequence:
– The brake to be tested using DI for p10230[2] or S_STW3B bit 2
– Positive or negative direction of the test torque using DI for p10230[3] or S_STW3B
– Brake test sequence 1 or 2 using DI for p10230[4] or S_STW3B bit 4.
Safety Integrated
Function Manual, 12/2018, 6SL3097-5AR00-0BP1
Select the brake test sequence with a 0/1 edge in S_STW3B bit 0
Selection by signal at the intended DI
After the 0/1 edge at the digital input for p9705 or in S_STW1B bit 8, the drive initially
executes SBT automatically. Forced checking procedure (test stop) is then performed.
bit 3
Description of Safety Integrated functions
4.2 Safety Integrated Extended Functions
143