Zero Power At Rest - Datakom D-500 MK2 User Manual

D-500 MK2 User Manual

34.24. ZERO POWER AT REST

In a manual genset, it is possible to reduce the current consumption of the unit down to true zero
Amperes, in order to prevent the battery from discharging.
For "zero power at rest operation", an external relay and "wake-up" pushbutton is necessary.
A digital output should be set to ZERO POWER RELAY function. An external relay should be driven with
this digital output. The relay contact will feed the controller power supply.
Any digital output may be assigned as zero-power-relay output. Please refer to the relay function list for
the setup.
The controller wakes-up on applying the power through the "wake-up" pushbutton. Then it will
immediately activate the zero power output which will cause the zero power relay to feed the controller.
If the engine is not run, or if the engine stops, a timer of 5 minutes will be counted. At the expiration of the
counter, the controller will deenergize the zero power relay which will cut the power supply. The controller
will wait in a zero-power state until the wake-up pushbutton is depressed again.
Wake-Up
pushbutton
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Firmware V-6.3
Zero Power
Relay