SIL Starters Contact Status

The status of the SIL* starters belonging to a SIL group is reported via the SIM Mirror In/Out connections. This allows the implementation of Wiring Category 2* architectures where the mirror contacts are connected to the Preventa XPS module (or equivalent). These configurations provide direct monitoring capabilities of electromechanical devices by a mechanically linked contact element, which gives diagnostic coverage up to 99%. Refer to EN ISO 13849-1, Table E.1 – Estimates for diagnostic coverage (DC).

SIL Starter Contact Status

SIL Group Status	Mirror In/Out Status
All SIL Starters are open	Mirror In/Out contact is closed
At least one SIL Starter is closed	Mirror In/Out contact is open
TeSys island unpowered, or fault detected by the safety function	Mirror In/Out contact is open

SIM to Preventa Module XPS-AF Wiring

	External start conditions (ESC)		Start button (S2)
	Emergency stop push button (S1)		Power supply
	Preventa XPS-UAF Module		Input
	SIM mirror out		Start
	SIM mirror in		Extension