12-2020
dormakaba Canada Inc. RAC5 Lite Installation Guide – PK3736 | 17
5.3 Power Failure
In the event of an electrical failure, the system will recover automatically and should require no additional
programming if electrical power is restored within 24 hours. However, after 24 hours, the RAC5 Lite will need
the time reprogrammed using the M-Unit.
When electrical power is restored after a power failure, verify the status of the LED D46 on the controller board
(B) is blinking. Refer to Annex A for Status LED definitions.
NOTE:
When the power to the RAC5 Lite is lost, the controller PCB stops functioning and the on-board relay will
return to its normal state. Any peripheral connected to the relay will then be either in a Normally Open (NO) or
Normally Closed (NC) state, dependent on the wiring.
5.4 Loading Recommendations
Do not exceed the load limitations of the control panel.
The maximum recommended load for the output relay in the RAC5 Lite system is 1 Amp at 30 VDC. The current
supplies by the controller PCB for each locking device used is 0.64 Amps from connector J18, pin 1 and J6, pin 1.
Refer to Annex A.
5.5 System Deactivation
In order to deactivate the card reader control panel, disconnect the AC power either by removing the power
adapter from the wall outlet, or by shutting off the main breaker switch for the AC line to the wall outlet the
control panel is connected to.
CAUTION
