Wire a Wiegand reader or keypad to a door controller or expansion module
Wiegand readers or keypads can be wired to various controllers and expansion modules.
Wire a Wiegand reader or keypad
ACC1-17 Door Controller (ACC1-17)
The following image displays the typical wiring to the Access Control reader device's terminals.
Power to reader port 1 is 12VDC at 180mA maximum. The reader connected to reader port 2 may be powered from the 12VDC auxiliary power supply output; VO and GND. Readers that require different voltages or have high current requirements should be powered separately. Refer to the reader manufacturer specifications for cabling requirements.
Wiring a reader to the ADC-ACC1-17 controller when an expansion board is present
Connecting an ADC-ACX1/ADC-AC-MR50 or ADC-ACX2/ADC-AC-MR52 expansion board reduces the ADC-ACC1-17 controller to only allowing for a single reader since the CLK and DAT terminals from reader port 1 cannot be used. If a reader is required to be connected to the ADC-ACC1-17 controller, reader port 2 must be used when an expansion board is present.
LP1501 Door Controller (ADC-AC-LP1501)
The following image displays the typical wiring to the Access Control reader device's terminals.
Power to reader port 1 is 12VDC at 300mA maximum. The reader connected to reader port 2 may be powered from the 12VDC auxiliary power supply output; VO and GND. Readers that require different voltages or have high current requirements should be powered separately. Refer to the reader manufacturer specifications for cabling requirements.
Wiring a reader to the ADC-AC-LP1501 controller when an expansion board is present
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Connecting an ADC-ACX1/ADC-AC-MR50 or ADC-ACX2/ADC-AC-MR52 expansion board reduces the ADC-AC-LP1501 controller to only allowing for a single reader since the CLK and DAT terminals from reader port 1 cannot be used. If a reader is required to be connected to the ADC-AC-LP1501 controller, reader port 2 must be used when an expansion board is present.
LP1502 Door Controller (ADC-AC-LP1502)
The following image displays the typical wiring to the Access Control reader device's terminals.
Each reader port can be used to wire one Wiegand reader. Power to the readers is selectable: 12 VDC (VIN must be greater than 20 VDC) or power is passed-through (PASS) from the input voltage of the controller (TB1-VIN) with 300 mA maximum per reader port. Readers that require different voltages or have high current requirements should be powered separately. Refer to the reader manufacturer specifications for cabling requirements.
For more information regarding which position the reader power selection jumper (J7) should be in, see When should the LP1502 Door Controller (ADC-AC-LP1502) be set to use PASS or 12V for the reader power?.
For readers with two LED wires, only connect the wire controlling the green LED to the ADC-AC-LP1502. The serial I/O device communication port (TB3) can support up to 16 Alarm.com expansion modules using a 2-wire RS-485 bus. The maximum cable length is 4,000 feet (1,219 meters).
Wire a reader to the ADC-AC-LP1502 controller when an expansion module is present
Connecting an expansion module does not affect the number of readers that can be connected to the ADC-AC-LP1502 controller. The ADC-AC-LP1502 has dedicated RS-485 terminals allowing the connection of two readers and expansions.
MR50 Single Reader Expansion Module (ADC-AC-MR50)
The following image displays the typical wiring to the Access Control reader device's terminals.
The ADC-AC-MR50 reader port supports one Wiegand reader. The input power is passed through to the reader terminal strip and is available for powering a reader. Care must be taken to ensure that the input voltage is within the voltage range of the reader.
The reader power output terminal, TB4-6 (VO), is not current limited. Readers with power requirements different from the input voltage used for the ADC-AC-MR50 board must be powered separately. 22 AWG minimum is recommended for readers.
MR52 Two Reader Expansion Module (ADC-AC-MR52)
The following image displays the typical wiring to the Access Control reader device's terminals.
Each reader port supports a single Wiegand reader. Power to the reader is selectable: 12V DC (VIN must be greater than 20V DC), or power is passed through from the input voltage of the ADC-AC-MR52 (TB7-VIN), 300 mA maximum per reader port. Readers that require different voltages or have high current requirements must be powered separately. 22 AWG minimum recommended for readers.
For more information regarding which position the reader power selection jumper, see When should the Two Reader Expansion Module (ADC-AC-MR52) be set to use PASS or 12V for the reader power?.
X100 Two Reader Expansion Module (ADC-AC-X100)
The following image displays the typical wiring to the Access Control reader device's terminals.
Reader ports 1 and 2 can each accommodate a single Wiegand reader and provide LED and buzzer control. Each reader port provides 12V DC @500 mA maximum. Readers that require different voltages or have high current requirements must be powered separately. 22 AWG minimum recommended for readers.
X1100 Door Controller (ADC-AC-X1100)
The following image displays the typical wiring to the Access Control reader device's terminals.
Reader ports 1 and 2 can each accommodate a single Wiegand reader and provide LED and buzzer control. Each reader port provides 12V DC @500 mA maximum. Readers that require different voltages or have high current requirements must be powered separately. 22 AWG minimum recommended for readers.