Controller Description

The controller is a one-piece, self contained microprocessor for diesel generator sets. The display and microprocessor is mounted in the cover. Six external relays - Main relay, Starter relay, Air Heater relay, Injector Actuator relay, Charger relay and Quad relay are also mounted inside the control box near the microprocessor.

This system automatically controls generator operation by providing:

  • Automatic unit preheat and engine startup during initial startup or delayed restart

  • Automatic Pretrip Test capability

  • Unit shutdown protection for the engine and alternator. The controller stops the unit due to low engine oil pressure, low engine oil level, high coolant temperature, or alternator overload. Refer the Alarms List section for Shut Down Alarm codes.

Parent topic: Controller and Operating Instructions

Controller Overview

1. Download Port Is used to download the event logger and flash load new software.
2. Unit ON / OFF Switch In the ON position, the electrical control system energizes for unit operation. In the OFF position, the electrical control system de-energizes to stop the engine. The unit will not operate.
3. Directional keys Used to scroll up and down and left and right thru tabs
4. Display A vacuum lucent display on the front panel shows operating information including output voltage, current test state during a Pretrip test and the controller menu. Normally it shows the Output Voltage (this is called the Standard Display). It will be blank when the unit On/Off switch is OFF.
5. Hot Key Is used to initiate pre-test, put the generator into stand-by mode, manual speed control mode.

Miscellaneous Controller Features

  • Internal self-checking/diagnostic capability

  • Pretrip test capability

  • Display menus: The controller contains extensive display menus that can be navigated via the Directional keys.