Effects When The Limit Is Exceeded For Sbh - Siemens SINUMERIK 840D sl Function Manual

Safety functions integrated in the system/drive
7.2 Safe Operating Stop (SBH)
7.2.2

Effects when the limit is exceeded for SBH

Fault situation for SBH
If the Safe Operating Stop function is activated, when a fault situation occurs, the axis
mechanical system can exhibit jerky, uneven motion. The magnitude of this movement
depends on the following parameters:
● Design of the mechanical system and gear ratio between the motor and mechanical system
● Speed and acceleration capability of the motor
● Magnitude of the selected monitoring clock cycle
● Magnitude of the selected SBH tolerance window
If the axis/spindle is being monitored (SGA "SBH active"=1) and leaves, for example, the
standstill tolerance window as the result of an external influence or an undefined setpoint input,
then the effects are as follows:
Effects
● The axis switches to STOP A/B configured using the following MD:
For 840D sl:
MD36956 $MA_SAFE_PULSE_DISABLE_DELAY
For S120:
p9556 SI Motion pulse cancelation delay time (Control Unit)
and
For 840D sl:
MD36960 $MA_SAFE_STANDSTILL_VELO_TOL
For S120:
p9560 SI Motion pulse cancelation shutdown speed (Control Unit)
● An alarm is generated (for 840D sl: 27010, for S120: F01707)
110
WARNING
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Safety Integrated