Hardware Installation
8 Andover Controls Corporation
Input Requirements
Caution
Andover Controls inputs are designed to be used with the specified card
readers, two-wire door switches, two-wire motion sensors, and other
two-wire input devices; they do not provide sufficient power to operate
sensors requiring an external power supply of 12 or 24 VAC/DC.
Each ACX 780/781 controller has the following inputs:
• Eight card reader inputs that receive either the Wiegand format or the
standard ABA format. You set the format later, in the software.
(UL listed systems must use model 30387 Sensor Engineering card
readers.)
Maximum data rate for each card reader—1 ms between bits with a
50
µ
s bit width. Maximum number of bits per card is 256.
Maximum power available to each card reader is 35 mA at 5 VDC.
If the card reader requires 12
or 24
VCD, it requires an
external power supply.
• Eight keypad inputs. You can place keypads near the door as an
alternative to a card reader. The person punches in an access code that
the controller recognizes before allowing the person access. Each
keypad has up to 12 keys and eight wires.
• Thirty-two supervisory inputs (1 through 32) that you can use for any
of the following types of inputs:
— Door switch that indicates the status of the door—open or closed.
Must have a 10 K
Ω
resistor in series if normally closed or in
parallel if normally open. The resistor allows the input to detect
tampering. Refer to the Infinity CX Programmer’s Guide for
details. Required.
2
±
2
±
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