Peripherals Manual Light Level Sensor (P/N 206-0002) • 21
Light Level Sensor (P/N 206-0002)
Overview
CPC stocks a low voltage light sensor designed to pro-
vide input to 16AI boards. The light level sensor provides
the controllers with information that allows controllers to
switch lights on or off, or provide continuous signals to
electronic dimming ballasts for fluorescent fixtures. Table
3 lists the specifications for all light level sensors supplied
by CPC.
Mounting
The Light Level Sensor should be mounted facing
north, for locations in the northern hemisphere, away from
direct sunlight. For locations in the southern hemisphere,
the Light Level Sensor should be mounted facing south.
CPC does not supply mounting hardware along with the
light level sensor. The sensor should be mounted horizon-
tally through the knockout of a standard weather-resistant
junction box. Figure 17 shows a typical mounting config-
uration.
Wiring
Wire the Light Level Sensor to the 16AI board as
shown in Figure 18.
1. Connect red and yellow leads to the even-
numbered terminal.
2. Connect green lead to the odd-numbered ter-
minal.
3. Connect the black lead to +12V.
Operat-
ing Temp.
13° F to 140° F (-11° C to 60° C)
Sensor
Type
Blue-enhanced Photo Diode with ampli-
fier
Input
Voltage
12 V DC from controller
Output
Voltage
0 V DC at darkness to 10 V DC at full
output
Sensitivi-
ty
Approximately 1 V per 175 FC
Table 3-Specifications for Light Level Sensors
Figure 17 - Light Level Sensor Mounting
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