ABB AC500-S Safety User Manual page 313

Configuration and programming
AC500-S Libraries > SafetyBlocks_PLCopen_AC500_v22.lib
Typical Timing Diagram
Fig. 111: Timing diagram for SF_TwoHandControlTypeIII
After activation of the FB, any button set to TRUE is detected as an invalid input setting leading to an error.
The FB detects when the divergence of the input signals exceeds 500 ms.
Error Behavior
In the event of an error, the S_TwoHandOut output is set to FALSE and remains in this safe state.
The Error state is exited when both buttons are released (set to FALSE).
30.03.2017 AC500-S 313