Hardware Installation
ACX 780/781 Installation Guide 7
Special Wiring for Keypad Inputs
We recommend eight-conductor, 18-gauge shielded wire for wiring key-
pad inputs except for the Essex unit, which requires two extra wires
bringing its total to ten conductors.
8-conductor, shielded
10-conductor, shielded for Essex Touch Pads
You can extend the length of this cable up to 500 ft.
Output Requirements
Each ACX 780/781 has the following outputs:
• Eight door outputs that control a door through card reader or keypad
access. Each output is a Form C door latch relay rated at 120 VAC/
30 VDC, 5 A maximum. You wire these outputs just as you would a
digital/pulsed output.
Resolution of the output is 0.1 sec. You may choose to manually
override the output by setting the OVERRIDE switch to ON or OFF.
Or you can set it to AUTO to have the card reader or keypad and
control system control access through the door.
The OVERRIDE LED indicates at least one of the door outputs is on
manual control; the DOOR OPEN LED indicates the door is open.
• One auxiliary output, also a Form C relay rated at 120 VAC/30 VDC,
5 A maximum. You may want to use this output for a bell or other
audio alarm indicator.
• Eight card reader LED outputs, each rated at 4.3 V or 9 mA.
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