Openpath Readers and ACUs communicate via RS-485. The following wire types are compatible, listed in the order of preference which impacts distance.
l Shielded CAT6A (recommended, additional two pairs can be used for sensors)
l Shielded CAT6
l Shielded RS485 w/22-24AWG (lower gauge, thicker wire is better)
l Shielded CAT5
l Unshielded CAT6 l Unshielded CAT5
l Shielded 22/6
l Unshielded 22/6
Ideally, use one twisted pair for GND and VIN (power) and one twisted pair for +B and -A (data).
Wiring Information
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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).
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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.
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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 Openpath Elevator Expansion Module. |
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WARNING: Always remove power from the ACU and locking hardware when wiring readers and other devices. Failure to do so can damage the ACU. |