Siemens Sinumerik 840D sl Function Manual page 342

Sinumerik safety integrated

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Connecting Sensors/Actuators

7.6 Safe Brake Test (SBT)

SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition

Torque limiting when testing the SBT

Reducing the torque limit, at the end of the test,

the limit is set to 0 in order to re--establish the

additional torque to be generated.

Required torque when testing the SBT

During the test, an additional torque is established,

and at the end is withdrawn again.

Actual position when testing the SBT

Axis motion is minimal if the brake was successfully

tested. The holding current re--establishes itself at

the end of the SBT and opening the brake. Here,

a slight sag can be seen.

Setpoint of the axis--specific feed

Setpoint is output and the following error built--up.

Sinamics s120