Emerson 460 installation manual Configuration Switch Settings, Leak Detect Filter DelaySS1

Configuration Switch Settings

A four-position DIP switch is used to	Switch Settings			OFF	ON
select two alarm (filter) delays and
	1. Leak Detect Filter			10sec	2min
three mutually exclusive alarm	2. Alarm Latch		S1	No	Yes
modes. The switches are located	3. Alarm Retest Delay			No	1hr
	4. Not Used			—	—
next to the wiring termination	ALL CIRCUITS: CLASS 2
blocks.
	Contacts shown in POWERED, NON-ALARM state
Leak Detect Filter Delay(SS1)	Contacts	TB3-3		N.C.	2
	Rating:	TB3-2		C
SS1 selects the leak detect filter	24V,3A	TB3-1		N.O.
delay, the interval for which a leak	Contacts	TB2-3		N.C.
condition must be continuously	Rating:	TB2-2		C	1
detected before an alarm is	24V,3A	TB2-1		N.O.
triggered:	24V	TB1-2
OFF = 10 seconds (default)	50/60Hz	TB1-1
	0.12A
ON = 2 minutes	CONNECT ENCLOSURE TO EARTH GROUND
This feature is useful for eliminat-
ing nuisance alarms. SS1 works
independently of the settings of SS2

and SS3. While the alarm delay is selectable (factory default is OFF=10 seconds), the cable fault delay is preset at approximately 2 seconds.

Latching or Non-Latching Alarms (SS2)

SS2 selects latching or non-latchingalarms, the setting in which an alarm will latch ON until manually reset:

OFF = Non-latching (default) ON = Latching

The factory default is OFF=Non-latching. If the sensor is in latching mode (ON=Latching) and the leak condition clears itself in the interim, a manual reset is required. While the alarm is latched, the sensor goes into a “sleep” mode and power to the leak detection cable is discontinued. De-powering the cable prevents damage to the cable should it be in contact with the conductive liquid for an extended duration. After a manual reset, the sensor resumes its normal opera- tion, continuously checking for leaks. If the leak condition has not yet cleared but the sensor is manually reset, the sensor will re-alarm after the appropriate leak detect filter delay. SS2 in the ON position will disable the operation of SS3.

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