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Wiring Guide How to Connect the LO21P Lock-Out Relay to My Automatic Door System

1Answers
NatalieLee
12/17/2025, 11:55:42 AM

To successfully wire the LO21P lock-out relay from BEA, Inc. to your automatic door system, follow these steps and guidelines. Always consult the user manual for your specific system model for detailed diagrams and instructions. Before starting, disconnect power to the system.

Here's a general wiring overview for the LO21P:

  • Black wire: Motor input (-)
  • Red wire: Motor input (+)
  • Orange wire: Power input / 12 – 24 VAC/VDC (-)
  • Brown wire: Power input / 12 – 24 VAC/VDC (+)
  • Green wire: Door control COM
  • Blue wire: Door control ACT
  • Black/White wire: Activation sensor COM
  • Red/White wire: BODYGUARD-T data (+) pin 7 and activation sensor N.O.

Important Notes:

  • Ensure the red wire from the LO21P is connected to the positive (+) side of the motor. Use a multimeter to verify polarity before connecting.
  • It's critical to wire the module while it's unplugged. Avoid contact between the red/white wire and the white wire (data wires) when power is applied, to prevent damage.
  • Set the DIP switches on the LO21P according to the required lock-out time specified in your system’s documentation.
  • Always adhere to all applicable safety standards during installation.

For model-specific wiring diagrams and more detailed guidance, refer to the user manual that came with your automatic door system. If you encounter any difficulties during the wiring process, don't hesitate to contact BEA, Inc.'s customer support for assistance.

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