Schneider Electric SR2MAN01 Latching, M S, A = 0 0 2 0 B = 0 0 4, Menu / OK, Description

LD Language Elements

Latching:

By default, if a power break occurs while a timer function block is running, any information on time already elapsed is lost. When the supply voltage returns, the time function block is reinitialized and ready for a new operating cycle.

If the application requires it, the time elapsed before the power break can be memorized using the Latching parameter.

Symbol of the Latching parameter:

Activé

Non activé

This function is used to save the state of the timer's current values and memorize the elapsed time in the event of a power break.

Illustration: Configuring a counter from the front panel of the smart relay:

			9	8
1	T T 1		A C
2	R T 1	a	M : S
3	T 1		b
4	A = 0 0 : 2 0 B = 0 0 : 4 5			7
	-		+
			Menu / OK
	5		6
Description:
Number	Parameter	Description
1	Command input	Command input timing diagram.
2	Reset input	Reset input timing diagram.
3	Timer output	Timer output timing diagram.

4	Parameter lock This parameter is used to lock the counter parameters. When
		the block is locked, the preset value no longer appears in the
		PARAMETERS menu.

5Timer on-delayTimer on-delay of the A/C timer.

6Timer off-delayTimer off-delay of the A/C timer.

7	Time unit	Time unit for the preset value.
8	Latching	Backup of state of the current counter value in the event of a
		power cut.
9	Timer type	Type of timer used.

SR2MAN01 11/2007 105