Schneider Electric SR2MAN01 user manual Safety Mode

				Debugging an Application
Safety Mode	If the result of losing the time setting is to lock coil control, then simply use a clock
	contact without a stop order in series with the action coils.
	Example of a non-locked coil:
		I1-I3----------	[Q1
		I2

The contact line for coil Q1 will be active even if the time and date setting is lost.

Example of a locked coil:

I4-H1---------- [Q2

With the clock function block 1 configured as follows:

H1 D/W	0123456
A
H:M ON	07:00
H:M ON	--:--

The contact line for coil Q2 will only be active after setting the clock.

SR2MAN01 11/2007 173