MoTeC ADR - Manual (Page 19)

ADR Functionality User Manual ADR Functional Reference
Power
If power is lost during an event, the ADR uses a supercapacitor to maintain power for event logging and severe event
indication (flashing Status LED).
Supercapacitor Charging
The following applies:
• Continuously charged when the ADR is powered from the battery voltage input (BATT+).
• Charge rate can be specified in the device configuration; see the
General Tab section on page 6 .
The higher the charge rate, the quicker the supercapacitor reaches full charge.
• It is recommended to use the maximum charge rate, except in specialised applications that require low current
draw from the ADR on start up.
Note:
With the maximum charge rate configured, the supercapacitor is charged to full capacity in less than one minute.
At this charge rate, the current drawn during charging from a 12V power source is less than 600mA.
Power Loss Handling
If the battery power is lost, the ADR enters a lower power utilisation mode to conserve supercapacitor power. The
CAN interface, GPS input and external 5V supply are disabled, and the Power and Data LEDs are turned OFF. Events
are still triggered and logged while enough power remains in the supercapacitor.
If the ADR has a severe incident already logged and the battery power is lost, and if no event logging is currently in
progress, then the ADR enters an extreme low power utilisation mode. This mode allows the Status and External LEDs
to flash for several minutes.
USB Power
During operation with ADR Manager, the ADR can be optionally powered by USB.
Note:
The supercapacitor is not charged when the ADR is powered by USB.
External 5V Power Supply
An external 5V power supply pin is provided to power a GPS receiver. The 5V supply is current limited to 90mA.
MoTeC — Published: 11 February 2014 Page 18