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TM3SAC5R safety module wired for the E-Stop but when E-Stop is activated K1 closes but not K2. K2 would just flicker and does not stay closed, why?

Issue:
TM3SAC5R safety module wired for the E-Stop but when E-Stop is activated K1 closes but not K2. K2 would just flicker and does not stay closed, why?

Product Line:
TM3 Safety, TM3SAC5R

Resolution:
Ensure activation of the SA_ENABLE in the EcoStruxure Machine Expert-Basic / SoMachine Basic Program.
This must do via programming code or via a watch window.