Control System


An independent power plant incorporates an electronic control system that controls its operation, and monitors its operating parameters. Eniquest’s independent power plants incorporate a control station that houses the controller.

Regulating the generator’s output

The controller regulates the DC electricity that is supplied by the PowerMaker generator to the storage battery bank, to keep the storage battery bank’s voltage constant.  It does this by adjusting the speed of the diesel engine that drives the alternator.  As the speed of the engine is increased, the power delivered from the alternator increases. The controller controls the engine speed by operating an electromechanical actuator that adjusts the delivery of fuel to the diesel engine.


The controller monitors several parameters of the charging process and the engine.  It does this both to control the storage battery bank charging process, and to provide warnings and information to the operator.  The parameters that are monitored include:
  • engine speed
  • engine oil pressure
  • engine temperature
  • output voltage
  • running state (running or not running)
  • hours run.

Starting and stopping the engine

When the controller’s select switch is set to the Run position, or when the select switch is set to the Auto position and the controller receives a signal to start the engine, the controller performs a series of events called a start sequence.  The controller provides a warning in the form of a flashing light that the engine is about to start, and then starts the engine.

Monitoring the storage battery bank

For PowerMaker Outback models, and optionally for PowerMaker Ranger models, a battery monitor monitors the amount of electrical energy in the storage battery bank (the state of charge). When the state of charge is reduced sufficiently the control system starts the PowerMaker generator to recharge the batteries, and stops it when the storage battery bank is sufficiently charged. To determine the state of charge of the storage battery bank, the battery monitor monitors its voltage.  As the storage battery bank discharges its voltage falls slightly.  When the voltage falls below a predetermined level the battery monitor signals the controller to start the PowerMaker generator’s diesel engine.  As the storage battery bank is charged its voltage progressively rises.  When then voltage of the storage battery bank reaches a specified voltage, called the absorption voltage, the battery monitor signals the controller to stop the PowerMaker generator’s diesel engine.


At Eniquest we provide Australian built AC Diesel Generators built tough for all applications. Eniquest AC generators are engineered using Australian military technology to ensure you have the best generator for the job.



At Eniquest we provide Australian built DC Diesel Generators suited built tough for all applications. Click here to find you Australian manufactured DC Diesel Generator. 



Eniquest has Australian Manufactured AC and DC generators built specifically for telecommunications. With Eniquest you can ensure you have reliable power 24/7 no matter where you are. Click here to find you Australian manufactured Diesel Generator.



At Eniquest we provide Diesel Generators and In-Service Spares to the Military for all power production applications. We understand the need for reliable, accessible military spec equipment and parts that you can depend on.