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12
MN301535 Rev A
Wiring
Step Five
RELAY AND POWER TERMINALS
Depending on the model selected, there will be either
one or two relays. The label for the relay applies for
both relays. Each terminal has a Normally Open
(NC), Common (C) and Normally Open (NO) terminal.
The relay(s) is(are) a single pole, double throw
(SPDT) type rated at 250 Volts AC, 10 Amps, 1/4 Hp.
Note:
The relay contacts are true dry contacts.
There is no voltage sourced within the relay contacts.
Note:
The "normal" state is when the relay coil is de-
energized and the Red relay LED is Off / de-
energized.
VAC POWER INPUT WIRING:
The Power Terminal is located next to the Relay(s).
Observe the Power Supply label, which identifies the
power requirement (120 or 240 VAC) and the terminal
wiring.
Note:
Polarity does not matter with the AC input
terminal.
CHANGING FROM 120 TO 240 VAC:
1. Remove the back panel of the controller and
gently slide the printed circuit board from the
housing. Use caution when removing the PCB.
2. Located jumpers JWA, JWB and JWC on the
PCB.
3. To change to 240 VAC, remove jumpers from
JWB and JWC and place a single jumper across
JWA. To change to 120 VAC, remove jumper JWA
and place jumpers across JWB and JWC.
4. Gently return PCB into housing and replace back
panel.
120 VAC
240 VAC
Configuration
Configuration
240 VAC OPTION:
When ordering any 240 VAC version of the LC90 series, the sensor will arrive configured for 240 VAC
operation. 240 VAC versions will include a –E to the part number (i.e. LC90-1001-E).