Siemens SINUMERIK MC Commissioning Manual page 329

Stop response Triggered ...
STOP F If an error occurs in the cross‐
wise data comparison.
STOP F is permanently assigned to the crosswise data comparison (CDC). In this way, errors are detected
in the monitoring channels.
After STOP F, STOP A is triggered.
When STOP A is present, "Safe Torque Off" (STO) is active.
Uncontrolled axis motion when a STOP A/F is initiated
With a vertical axis or pulling load, there is a risk of uncontrolled axis movements when STOP
A/F is triggered. If present in the hazardous area, this can result in death or severe injury.
● Use the "Safe Brake Control (SBC)" and a holding brake (not a safety-relevant brake!) with
Safety Integrated (with SINAMICS S120)
Commissioning Manual, 02/2020, A5E46305916B AB
WARNING
sufficient holding force to prevent these movements.
Action
Transition to STOP A.
Diagnostics
7.7 Stop responses
Effect
Follow-up response STOP A
with adjustable delay (factory setting
without delay) if one of the safety
functions is selected
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