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Wiring
From every IR Sensor location you must “home-run” a
category 5 cable back to the MSU480. Home run means that
an individual cable is connected between each IR Sensor and
the MSU480 (Figure 4).
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NFRARED
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AIN
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YSTEM
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NIT
“TECH TIP”
Wire size is expressed
by it’s AWG (American
Wire Gauge) number.
The lower the AWG
number, the larger
the wire, i.e., 20 AWG
wire is physically
larger than 22 AWG.
IMPORTANT – AVOIDING INTERFERENCE
Avoid locating any of the cables, Sensors, Keypads or the Main
System Unit near any potential sources of Electro-Magnetic
Interference (EMI), such as light dimmers, speed controls for
ceiling fans, electrical ballasts, television sets, large motors,
heaters or air conditioners.
Figure 4: Home run the
sensor cable from the
sensor to the MSU480.
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12
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Remotely Located
IR Sensors
SENSORS IN
DS00330ACN/MSU480 12/19/03 9:05 AM Page 6