HEIDENHAIN iTNC 530 457
14.4 Functional Safety FS (Option)
Explanation of terms
Safety-related operating modes
Safety functions
Designation Short description
SOM_1 Safe operating mode 1: automatic operation,
production mode
SOM_2 Safe operating mode 2: set-up mode
SOM_3 Safe operating mode 3: manual intervention;
only for qualified operators
SOM_4 Safe operating mode 4: Advanced manual
intervention, process monitoring
Designation Short description
SS0, SS1, SS1F,
SS2
Safe stop: safe stopping of all drives using
different methods
STO Safe torque off: energy supply to the motor is
interrupted. Provides protection against
unexpected start of the drives
SOS Safe operation stop: safe operating stop.
Provides protection against unexpected start
of the drives
SLS Safety-limited speed. Prevents the drives
from exceeding the specified speed limits
when the protective door is opened
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