Avigilon ALTA Core Series - Wiring Avigilon Readers; ACU and Wiegand Reader Wiring

Wiring Avigilon readers
Avigilon readers and ACUs communicate via RS-485. The compatible wire types are listed in order of
preference which impacts distance.
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Shielded Cat 6A (recommended; extra two pairs can be used for sensors)
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Shielded Cat 6
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Shielded RS-485 with 18-24 AWG (lower gauge, thicker wire is better)
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Shielded Cat 5
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Unshielded Cat 6
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Unshielded Cat 5
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Shielded 22/6
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Unshielded 22/6
Note: Use one twisted pair for GND and VIN (power) and one twisted pair for +B and -A (data).
ACU and Wiegand reader wiring
Pigtail color Short name Full name
Gray GND Ground (RTN)
Blue +B RS485-B
Violet -A RS485-A
Orange VIN +12V IN
Table 2 Connections from Avigilon ACU to Avigilon reader
Pigtail color Short name Full name
Red VO Wiegand Voltage
Black GND Wiegand RTN
Green WD0 Wiegand Data 0
White WD1 Wiegand Data 1
Brown LED Wiegand LED
Yellow BUZZER Wiegand Buzzer
Table 3 Connections to third-party Wiegand reader (optional)
Temperature must not exceed -22°F to 140°F (-30°C to 60°C).
Installation 24