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Intellipad Wiring
When you are placing both an IntelliPad and a sensor (or two
keypads) in one room you may “daisy-chain” using a single
cable. A cable is run between the keypad and the sensor and a
single cable is run from either the sensor back to the MSU480.
To prevent data feedback an IN4003 Blocking Diode is inserted
on the data line between the Intellipad and the sensor. The
cathode, or blocking side of the diode, faces the Intellipad
(Figure 5). Note that status wire is connected to Intellipad’s
status (+) connector.
Sensor/Keypad Cable
The MSU480 connects to IR sensors and the Intellipad with
category 5 cable, with a maximum cable run of 500'.
Flasher Cable
Niles infrared flashers come supplied with a 10 foot 2-conductor
22 gauge cable. Should you need to extend it, use a 16 gauge
2-conductor cable (“zip-cord”). Shielding is not necessary for a
flasher. Flasher wires can be extended up to 200 feet.
7
I
NFRARED
M
AIN
S
YSTEM
U
NIT
12VDC/
200mA
OUTPUT
1 2345678
FLASHER OUTPUTS
MSU480
IR MAIN SYSTEM UNIT
POWER
+12V DC
3-30V
AC/DC
STATUS
IN
CONTACT
CLOSURE
INPUT 1 INPUT 2 INPUT 3 INPUT 4
HI
LOW
HI
LOW
STATUS
IR
Figure 5: An IR sensor
cable is “daisy-chained”
from an Intellipad, to a
sensor and back to the
MSU480.
IN4003
Blocking
Diode
DS00330ACN/MSU480 12/19/03 9:05 AM Page 7