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Wiegand Accessories
The two AM3Plus Wiegand inputs (READER A & B) can connect to
a large variety of 26, 30, and 31-bit Wiegand output accessories. The
Wiegand format is a common standard for access control equipment.
A typical application would be to add swipe card or proximity readers to
the system.
✦ NOTE: Depending on the Wiegand accessory used, the LED1,
LED2, and HOLD connections may not be required.
• LED1 output is switched to ground during non-access time.
• LED2 output is switched to ground for one second during access
time.
1. Mount and install the Wiegand accessory as described in its
installation instructions.
2. Route a cable from the AM3Plus to the accessory.
• For wire runs up to 300 feet use 24 AWG Belden 9931 or
equivalent.
• For wire runs up to 500 feet use 20 AWG Weico 9405 or
equivalent.
3. Connect the cable to the accessory and the AM3Plus as shown in
the fi gure.
RS-232 Por t
A modular connector is provided for the bi-directional 38.4K baud RS-232
port. The AM3Plus RS-232 port connects to a personal computer’s COM
port. System programming can be performed locally with a computer
connected to the RS-232 port.
REMOTE
WIEGAND
DEVICE
LED2
HOLD
LED1
DAT1
DAT0
GND
DAT0
DAT1
LED1
HOLD
LED2
GND
AM3PLUS
READER
TERMINALS
PWR
PWR
NOTE: THE LED1, LED2, AND HOLD
CONNECTIONS MAY NOT BE REQUIRED
DEPENDING ON THE WIEGAND DEVICE USED
AM3PLUS
RS-232 PORT
COMPUTER'S
COM PORT
LINEAR MODEL A2C
SERIAL COMPUTER CABLE
SET COMPUTER COM PORT
BAUD RATE TO 38,400 BPS
NOTE: USE A DB-25 TO DB-9 CABLE ADAPTER IF REQUIRED