Wiring for a Door Already Managed by an ACM System

Wiring

  1. GND connects to input 1 on the digital I/O pin connector of the Video Intercom.
  2. I/O connects to input 4 on the digital I/O pin connector of the Video Intercom.
  3. TAMPER connects to input 5 on the digital I/O pin connector of the Video Intercom.
  4. COM connects to the – terminal on the safety relay, the REX sensor, and to the – terminal on the power supply.
  5. NO connects to the – terminal on the door strike.
  6. REX connects to the output for REX signals on the door controller managed by the ACM system (and the REX sensor is connected to an input terminal on the door controller).
  7. + connects to the + terminals on the power supply and the door strike.

Parts

  1. Door strike
  2. 60V freewheel diode (cathode is connected to the + wire, and anode is connected to the – wire)
  3. Power supply
  4. REX sensor
  5. Safety Relay
  6. Digital I/O pin connector of the Video Intercom