Functional Safety (Fs) Status Displays - HEIDENHAIN TNC 620 User Manual

Setup | Integrated functional safety (FS)
Safety functions
To ensure that the requirements for operator protection are met,
integrated functional safety (FS) provides standardized safety
functions. The machine manufacturer uses the standardized safety
functions for implementing functional safety (FS) for the machine in
question.
You can track the active safety functions in the axle status of
functional safety (FS).
Description Meaning
Safe Stop
SS0, SS1,
SS1D, SS1F,
SS2
Safe Torque Off
STO
Safe Operating Stop
SOS
Safely Limited Speed
SLS
Safely Limited Position
SLP
Safe Brake Control
SBC

Functional safety (FS) status displays

The control indicates the active safety-related operating mode by an
icon in the vertical soft-key row:
Icon
HEIDENHAIN | TNC 620 | User's Manual for Setup, Testing and Running NC Programs | 01/2022
Safety-related operating mode
SOM_1 operating mode active
SOM_2 operating mode active
SOM_3 operating mode active
SOM_4 operating mode active
This function must be enabled and
adapted by the machine manufacturer.
Short description
Safe stopping of drives using different methods
The power supply to the motor is interrupted. Provides
protection against unexpected start of the drives
Safe operating stop. Provides protection against
unexpected start of the drives
Safely limited speed. Prevents the drives from exceed-
ing the specified speed limits when the protective door
is opened
Safely limited position. Monitors safe axes to keep
them within the limit values of a defined area
Dual-channel control of the motor holding brakes
Short description
Safe operating mode 1:
Automatic mode, production mode
Safe operating mode 2:
Set-up mode
Safe operating mode 3:
Manual intervention; only for qualified opera-
tors
Safe operating mode 4:
Advanced manual intervention, process
monitoring, only for qualified users
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