Avigilon SDC - Set up Tamper Alerts; Wiring Fail-Safe and Fail-Secure Lock Hardware; Voltage Switches

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
SDC. 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 SDC. If you need more than two
access controlled floors or readers, add the 16 I/O Elevator Board.
Warning: Always remove power from the SDC and locking hardware when wiring Avigilon readers and
other devices. Failure to do so can damage the SDC.
Set up tamper alerts
The front cover of the SDC has a built-in tamper sensor and will report tamper events when the cover is
removed. You can monitor tamper events using the Tamper Detector State Changed alert. Refer to How do I set
up alerts?
Wiring fail-safe and fail-secure lock hardware
Fail safe and fail secure are ways of configuring lock hardware:
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Fail-safehardware unlocks when power is interrupted or lost.
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Fail-securehardware locks when power is interrupted or lost.
For information about wiring third-party lock hardware, refer to vendor documentation.
Voltage switches
Warning: Remove the DC Input Power and PoE before changing the voltage of the relays.
To power locking hardware without an external supply (Wet Relay), select 12V or 24V, and connect locking
hardware to NO and GND for fail-secure locks, or NC and GND for fail-safe locks.
Installation 13