The current Openpath Jira and Confluence instances will be migrated to the MSI On-Premise solution from August 9th-11th, the current platform will be set to read-only and all future usage will be in the Avigilon Instance. Please ensure access to MSI Jira & MSI Confluence, both are accessible through OKTA. For additional information and details please refer to the Atlassian migration page

Wiring Avigilon Readers

Owned by Chad Fay
Last updated: Apr 11, 2023
1 min read

Avigilon Readers and ACUs communicate via RS-485. The following wire types are compatible, listed in the order of preference which impacts distance.

  • Shielded CAT6A (recommended, additional two pairs can be used for sensors)

  • Shielded CAT6

  • Shielded RS485 w/22-24AWG (lower gauge, thicker wire is better)

  • Shielded CAT5

  • Unshielded CAT6 l Unshielded CAT5

  • Shielded 22/6

  • Unshielded 22/6

Ideally, use one twisted pair for GND and VIN (power) and one twisted pair for +B and -A (data).

Wiring Information

 

Recommended maximum cable length: 300 ft (91 m) with CAT6 or 500 ft (152 m) if two wire pairs are used for GND and VIN (power).

For shielded wiring: Connect one side of the drain wire (the shield around the wires) to the GND terminal on the ACU. Both the shield and the GND wire can share the same GND terminal. Do not connect the other side of the shield to anything.

For standard reader installation: We recommend that you install a 1-Gang 20 CU box in order to flush-mount the reader. Alternatively, the reader may also be surface mounted with the included back plate.

Note: For elevators, all relays and readers must be connected to the same ACU. If you need more than four access-controlled floors or readers, add the Avigilon Elevator Expansion Module.

WARNING: Always remove power from the ACU and locking hardware when wiring readers and other devices. Failure to do so can damage the ACU.

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