9
Communication Hub hardware version AH20 has four Wiegand
signals plus power supply. The purpose and connection of these
signals are described in the table below.
H
ub
C
onneCtor
D
esCription
D1
Wiegand Data 1 signal. Output from Communication Hub.
Used to transmit credentials.
D0
Wiegand Data 0 signal. Output from Communication Hub.
Used to transmit credentials.
RED
Wiegand Red LED signal. Input to Communication Hub. Used
for access decision. Leave unconnected if DIP switch 1 is
selected “OFF”. Signal is active low.
GREEN
Wiegand Green LED signal. Input to Communication Hub.
Used for access decision. Signal is active low.
See DIP 1 for alternate instructions.
GND
GND = Signal ground. Should be connected to EAC system
GND and power supply GND.
8-24 VDC
Power supply input, 8-24 VDC, 2 W (AH20 Advanced)
alternatively 0.8 W (AH20 Standard and AH30). The power
supply shall be 3 A over current protected. Wire requirements
16-22 AWG.
