ADC-ACC1-17 Installation Guide | 7
Input Power
The ADC-ACC1-17 may be powered by one of two ways.
Use jumper J3 to select the input power source:
• Power over Ethernet (PoE) connection, fully compliant
to IEEE 802.3af, or
• Local 12V DC power supply wired to TB4-3 (VIN),
TB4-4 (GND)
Reader & Expansion Module Wiring
Reader port 1 can be used to wire either one Wiegand
reader or up to eight Alarm.com expansion modules.
Reader port 2 can be used to wire one Wiegand reader.
Power is supplied to reader port 1 at 12V DC at 180 mA
maximum. The reader connected to reader port 2 may be
powered from the 12V DC auxiliary power output; TB4-1
high current requirements should be powered separately.
cabling requirements.
Reader port 1 can support up to eight Alarm.com expansion
modules using a 2-wire RS-485 bus. The maximum cable
length is 2,000 ft. (610 m).
For readers with two LED wires, only connect the wire
controlling the green LED to the ADC-ACC1-17.
When powering expansion modules and peripherals from
the ADC-ACC1-17, be cautious not to exceed 650 mA @
12V DC. 22 AWG minimum recommended for readers.
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