ABB AC500-S Safety User Manual page 202

Configuration and programming
AC500-S libraries > SafetyBlocks_PLCopen_AC500_v22.lib
Fig. 89: Typical timing diagram for SF_Antivalent
The function block monitors the discrepancy time between channel NO and channel NC.
Error behavior The output S_AntivalentOut is set to FALSE. Error is set to TRUE. DiagCode indicates the error
states.
There is no reset defined as an input is coupled with the reset of an error. If an error occurs in
the inputs, one new set of inputs with the correct value must be able to reset the error flag.
(Example: if a switch is faulty and replaced, using the switch again results in a correct output.)
202 3ADR025091M0208, 12, en_US 2020/06/19