Sequence - Siemens SINUMERIK MC Commissioning Manual

4.15.1.6

Sequence

SBT has the following basic sequence:
Figure 4-23 SBT: Time sequence
● After the user selects the brake test (0/1 edge in r10231.0), the static hanging load is
determined. For this reason, all brakes must be open and the pulses enabled when the
brake test is selected.
– When testing a motor holding brake, which is directly controlled from SINAMICS, the
– When testing an external brake, via p10234.6 or for SIC/SCC, via S_ZSW3B.6, a value
● The brake, the test sequence and the test direction are then selected by the user.
● When the brake test is active after the start of the brake test / brake test sequence by the
user (0/1 edge in r10231.1), the holding brake (MHB) is closed or there is a prompt to close
the external brake. The request to close the brake is again indicated with p10234.6 = 1 or
S_ZSW3B.6 = 1. Also in this case, only a maximum of 11 seconds must elapse, otherwise
a fault is issued.
● The test torque (test torque ± load torque for a vertical axis) is specified during the SBT.
When n = 0 is entered, the controller builds up an appropriate test torque against the closed
brake. The test torque is built up along a ramp. The ramp is defined by the time of p10208.
● At the end of the test sequence, the brake is opened or there is a prompt to open the brake.
Safety Integrated (with SINAMICS S120)
Commissioning Manual, 02/2020, A5E46305916B AB
brake is automatically opened when the pulses are enabled and p1215=1.
of 0 indicates that the external brake must be opened. This must occur within 11
seconds, otherwise the test is canceled and a fault is output.
Safety functions integrated in the drive
4.15 SBT
177