Omega Vehicle Security LVCN700 Series warranty Preparation, Calibration

De-energize (All) Low

Energize (Primary)

High

Energize (Backup)

High High

Energize

De-energize

High Alarm Shown

Energize

De-energize

Energize

De-energize

Energize

(Auto-Fill Shown)

PREPARATION

Step Four

A. Supply Voltage: The power supply voltage should never exceed the maximum rating of 250 VAC for the LVCN700 series AC switch or 28 VDC for the LVCN700-DC series switch.

LVCN700 series			LVCN700-DC series
	shown				shown
		HOT				Positive
		NEUTRAL				Negative
		VAC				VDC
		INPUT				INPUT
	L1 L2			(+) (-)
POWER				POWER
	VAC				VDC

B. Conduit Entrance: The enclosure has two 1/2” NPT female conduit ports for routing of the switch

supply and relay circuit wiring. Do not	Supply	Relay
run mixed AC and DC voltages	Port	Port
through the same conduit port. Route		1/2 NPT
the supply voltage circuit through one		Conduit
port and the relay circuit(s) through the

opposite port.

C. Relay Fail-Safe Design:

	The switch has (3) relay channels. Each relay is a SPDT
	(single pole, double throw) type rated at 60 VA. Normally
RELAY	open (NO) or normally closed (NC) operation is user
	selected based on the desired system control and fail-safe
1
	logic. Always design a fail-safe system that accommo-

dates for the possibility of relay and/or power failure. The "nor- mal" relay state is where the relay coil is de-energized and the Red relay LED is OFF. Therefore, if power is cut OFF to the switch it will de-energize the relay. Make sure that the de-energized state is the safe state in your system design. As such, if switch power is lost, a pump will turn OFF if it is connected to the normally open side of the relay.

E. Maximum Applied Range: Individual or cumulative effects of agitation, vapor or foam can reduce the overall quality of signal return and shorten the maximum applied range of the switch. To determine the maximum applied range of the switch in your application, refer to the below derating chart.

0% 100Khz

50Khz

50%

100%
0	1	2	3	4	5	6	7	8	9	10
			Ultrasonic Derating Chart
	LVCN704/709					LVCN716/726
Agitation		= 1-3 @ 100 kHz			Agitation		= 1-3 @ 50 kHz
Vapor		= 4-6 @ 100 kHz				Vapor	= 3-5 @ 50 kHz
Foam		= 5-6 @ 100 kHz				Foam	= 4-6 @ 50 kHz

CALIBRATION

Step Five

A. Introduction: The switch has two modes, the RUN and CAL modes. In the RUN mode, the switch is operational and the relay(s) will energize or de-energize at the calibrated set point distances. In the CAL mode, the relay set point distances and states may be target-cal- ibrated into memory. The switch arrives from the factory without

any preset calibration. Each relay channel may be user calibrated into one of the following configurations; 1) high or low level alarm,

2)high and low level out of bounds alarm, 3) automatic fill or empty, or 4) duplexing/Alternating.

High or Low Level Alarm: The high or low level alarm is programmed with a sin- gle set point at the desired tank level. Configured as a high alarm, the relay will energize if the level rises above the set point. Configured as a low level alarm, the relay will energize if the level falls below the set point.

High and Low Level Out of Bounds

Alarm: Programmed with two set points, the high and low level out of bounds alarm protects the top of the tank from overspill and the bottom of the tank from run-dry. If the level rises above or falls below the set points, the relay will energize. The relay will remain de-energized as long as the level is in between the set points.

Automatic Fill or Empty: Programmed with two set points, the latched automatic fill or empty will control a pump or valve. When the level reaches the energize set point, the latching relay will energize, and remain energized until the level reaches the de-energize set point.

Duplex/Alternate: Programmed with three set points and two relays, duplexing will automatically fill or empty the tank with two pump alternation for maintenance

and lead-lag control for back up operation. When the level reaches the energize set point, the latching relay will energize, and remain energized until the level reaches the de-energize set point. Each time the level

reaches the energize set point, the relays will alternate. If the level reaches the back-up energize set point, both relays will energize until the level reaches the de-energize set point. Alternation will automati- cally fill or empty the tank with two pumps switching after each cycle.