National Luna NLDC-25, Owner'S Manual

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The ignition (IGN) over-ride input can be used in vehicles that have
variable alternator output.
This is common with “Smart” alternators.
Connect the IGN terminal using a small gauge wire to a 12V
ignition lead or source in the vehicle.
This source must be switched to a positive voltage when the
vehicle is started and switched off when the vehicle is turned off.
If the IGN feature is used, the Turn-ON and Turn-OFF voltages of
the NLDC-25 are adjusted
(See specifications on page 15) .
IGN over-ride
Temperature sensor
The NLDC-25 is supplied with a temperature compensation probe.
For best performance, connect the probe end to one of the AUX
battery terminals or to the battery casing.
Connect the smaller ring on the sensor cable to the “sensor” terminal
on the NLDC-25. Connect the larger ring to one of the GND terminals.
With the probe fitted, the NLDC-25 will optimise final charge voltage
based on the measured temperature. This prevents over-charge at
higher temperatures and increases charge performance at lower
temperatures.
For safety, charge is stopped if the battery temperature increases
above 50°C.
Fitting the temperature probe in a location other than on the
AUX battery can increase the risk of battery over or
under-charging. CAUTION - DO NOT connect the IGN over-ride permanently
to a non-switched positive source.
Doing so may result in excessive drain on the Main battery.
8
+
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AUX
BATTERY
+
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MAIN
BATTERY
Temperature sensor
Ignition