Installation & Operating Instructions
Risk of Fire or Electric Shock
WARNING
• Disconnect power at the circuit breaker(s) or disconnect switch(es) before installing or
servicing.
• More than one circuit breaker or disconnect switch may be required to de-energize the
equipment before servicing.
• Use #22 - #12 AWG wire - COPPER conductors ONLY. Rated 90°C Min.
• Installation and/or wiring must be in accordance with national and local electrical code
requirements.
• For outdoor locations, raintight, or wet locations, conduit hubs that comply with requirements
of the UL514B (standard for fitting for conduit and outlet boxes) are to be used.
• Photoelectric sensor shall be directly mounted to enclosure using standard conduit
connection means.
• When photoelectric sensor is mounted in a remote location, wiring shall be routed separately
from Class 1 wiring.
• When photoelectric sensor is mounted in a remote location and routed with Class 1 wiring,
the wiring insulation shall be rated for the minimum voltage of the Class 1 wiring.
• KEEP DOOR CLOSED AT ALL TIMES when not servicing.
NOTICE
• The warranty will be void if the wrong voltage is applied. Connect the wires in accordance with
the wiring diagram.
DESCRIPTION
The LightMaster PC Series Lighting Control system inde-
pendently controls one or two circuits based on the amount
of natural light in an area. When the detected light drops
below the configured foot-candle setting, LightMaster turns
circuits ON. When natural light rises above the setting,
LightMaster turns circuits OFF. Each circuit has adjustable
time delay dials from 0 to 100 seconds to prevent unwant-
ed switching caused by headlights, lightning, and other
conditions. LightMaster can be used with LS2 high-range
opaque sensors for typical outdoor dusk-to-dawn applica-
tions or with LS1 clear sensors for indirect light applica-
tions.
PC/LM Series
MOUNTING THE LightMaster MODULE
There are multiple mounting options for the LightMas-
ter module. Follow the applicable guidelines for the
appropriate mounting method for your facility.
• Surface Mount in a control panel or enclosure
with a standard DIN rail
• Place the top two protruding guides located
on the back of the unit over the top lip of
the DIN Rail and snap into place.
• Mount as a Stand alone unit
• Mount the LightMaster in a TYPE 3R indoor/
outdoor enclosure.
NOTE: Also available: LM2 Series system with included
TYPE 3R enclosure.
Dimensions
MOUNTING THE LightMaster SENSORS:
Follow these guidelines to mount the LS1 or LS2 sen-
sor.
• If sensor is mounted directly to enclosure of con-
troller, use standard conduit connection means.
• If sensor is mounted remotely from controller, either
route sensor wiring separately from class 1 wiring
or use wiring for sensor rated for the minimum volt-
age of adjacent class 1 wiring.
• The light level sensor can be mounted indoors or
outdoors.
• It must be mounted vertically with the wires facing
down.
• The wiring length should not exceed 330 feet and
should not be run in close proximity to current car-
rying wires.
• If you are using the sensor for dusk/dawn sensing,
position the sensor with the arrow facing a wall.
• If you are using the sensor to control interior light-
ing, awnings, or shades, position the sensor with
the arrow facing away from the building towards
the sunlight.
• Be sure to position the sensor so unwanted light-
ing, such as car headlights, will not influence it.
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