Access Control Module
26
The data line maximum lengths are:
18 AWG - 500 feet
20 AWG - 300 feet
22 AWG - 200 feet
Tabl e 7 describes the pinouts.
Wiegand Port Rating
The ACM Wiegand ports and their ratings are listed in Tabl e 8 .
RS-485
RM Readers - I/8s - R/8s
Normal RM bus wiring is used for RM readers, I/8 boards, and R/8 boards.
Table 7. Wiegand Port Pinouts
Wiegand Port
Pin Number Signal/Function
1 Power (+12 Vdc or +5 Vdc)
2 GND - PWR Return
3 Data 0 - Wiegand Input
4 Data 1 - Wiegand Input
5 Red LED - active low
6 Yellow LED - active low
7 Green LED -active low
8 Beeper - active low
Table 8. ACM Wiegand Port Ratings
Port Rating
Reader Output Control
(Red, Green, Yellow, Beeper)
4.0v - 5.25v, 20mA max
Reader Input Lines
(D0, D1)
Low level < .8v
Reader Output Voltage +12 Vdc
Reader Current 1.5 A per port
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