Wiring Door Switches; Figure 8. Wiring Ordinary Switch To Doorswitch Input - Andover Controls ACX 780 Installation Manual

Wiring Door Switches

You may wire up to eight of the 32 supervisory inputs to door switches.
The maximum length wire you may use is 500 ft of #18 gauge wire (152
m of 1.0 mm
wire). You wire the door switch as follows (switches may be either nor-
mally open or normally closed):
1. Slip the appropriate wire under the IN screw and tighten the screw
22 Andover Controls Corporation
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2
wire) or 200 ft of #22 gauge wire (60 m of 0.35 mm
down on it.
Figure 8 shows the wiring diagram for the input if the door switch is
an ordinary switch. This switch can detect either the switch position,
or tampering if the switch has an open fault. If the switch is shorted,
it appears closed.

Figure 8. Wiring Ordinary Switch to DoorSwitch Input

RET
IN1
Figure 9 shows the wiring diagram for the input if the door switch
has a built-in series resistor. This switch can detect either the switch
position, or tampering where the switch is shorted or grounded. We
recommend this switch for situations requiring the greatest security.
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