Siemens SINUMERIK 840D sl Function Manual page 307

Figure 8-39
Safety Integrated
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Acceptance test – trace brake test
Connecting sensors and actuators
8.6 Safe Brake Test (SBT)
Actual position when testing the SBT
Axis motion is minimal if the brake was suc‐
cessfully tested. The holding current re-estab‐
lishes itself at the end of the SBT and after
opening the brake. Here, a slight sag can be
seen.
Setpoint of the axis-specific feed
Setpoint is output and a following error built up.
307