Explanation Of Terms - HEIDENHAIN TNC 640 User Manual

Manual Operation and Setup | Optional safety concept (functional safety FS)

Explanation of terms

Safety-related operating modes
Description Brief description
SOM_1
Safe operating mode 1: Automatic opera-
tion, production mode
SOM_2
Safe operating mode 2: Set-up mode
SOM_3
Safe operating mode 3: Manual interven-
tion; only for qualified operators
SOM_4
Safe operating mode 4: Advanced manual
intervention, process monitoring
Safety functions
Description Brief description
SS0, SS1, SS1F,
Safe stop: safe stopping of all drives using
SS2
different methods
STO
Safe torque off: Energy supply to the motor
is interrupted. Provides protection against
unexpected start of the drives
SOS
Safe operating stop. Provides protection
against unexpected start of the drives
SLS
Safely-limited speed. Prevents the drives
from exceeding the specified speed limits
when the protective door is opened
HEIDENHAIN | TNC 640 | ISO Programming User's Manual | 10/2017
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