IF 610 Installation and Operation Manual
Issue 3, 10/04/00
Firmware Ver. 7
34
WIRING GUIDELINES
SIGNALING CIRCUIT WIRE SIZES
24 VOLT DC PARALLEL
WIRE
RESISTANCE
PAIR IN DISTANCE TO LAST DEVICE
(MAXIMUM LINE LOSS 10%)
AWG OHM/
1000
0.5amp 1.0amp
1.5amp
2.0amp
18 6.5 400'
200'
130'
100'
16 4.1 620'
300'
210'
160'
14 2.6 1000'
500'
330'
250'
12 1.6 1IF
610'
800'
520'
400'
10 1.0 2500'
1250'
840'
620'
CIRCUIT CHARACTERISTICS
CIRCUIT EOL LINE
RESISTANCE
CABLE TYPE
PID-95 (Analog)
3.9 K ohm 1/2W
25 ohm
strait lay - 18 Ga.
SIGNAL
3.9 K ohm 1/2W
4.8 ohm @0.5a
strait lay - 14 Ga.
1.2 ohm @2.0a
strait lay - 12 Ga.
ANALOG LINE
Not Required
25 ohm
twisted pair - 16 Ga.
Table I-3
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