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Wiring Inputs to the RM
4-17
Wiring Inputs to the RM
CAUTION
Improper grounding can result in reader failure or
equipment damage. Follow all instructions for
grounding to ensure successful operation of your
readers.
All input switches can be located up to 2,000 ft. (609.6 m) from the main
apC/L module.
Supervised inputs can be either normally open or normally closed.
Use twisted, 18 AWG (0.902 mm) Belden #8461 or twisted 22
AWG (0.357 mm) Belden #8442 to connect the input switches to
the input pins. Place a piece of wire across the screw terminals of
any unused active unsupervised inputs.
Other types of inputs are:
n
n
n
Unsupervised inputs, which are normally closed
AC power fail input, which is normally closed
Front and rear tamper switches, which are normally closed
To wire the RM to the apC/L:
1. For the data line, pull a twisted shielded pair, 24 AWG Belden #9841
from the apC.
For the power line, pull a twisted pair, 18AWG (0.902 mm) Belden
#8461 or 22AWG (0.357 mm) Belden #8442.
CAUTION
See Appendix B of this manual to determine the
maximum wire length for readers without an
independent power source.
C•CURE apC/L Technical Manual