Generator Monitoring - Magnum MMG 125 Operating Manual

• "ALARM CANCEL" Button
When an alarm is activated, either visually or audibly, press this button to silence or cancel the alarm.
• "FAULT RESET" Button
Press this button to clear the fault from the LCD window after the fault has been corrected.
Press "FAULT RESET" and "ENTER" to clear the John Deere ECU Alarm List Codes.
3. The Liquid Crystal Display (LCD)
• This window will toggle between the Generator Display Screen and the Engine Display Screen upon start-
up of the unit. By viewing these screens, the operator will be able to monitor both the engine and genera-
tor status while the unit is running.
4. The "DIAGNOSTICS" Keypad
• " " Scroll-Up Button
Press this button to scroll-up within the LCD window.
• " " Scroll-Down Button
Press this button to scroll-down within the LCD window.
• "PAGE SELECT" Button
Pressing this button will select the next display screen.
• "ENTER" Button
Pressing this button will place you inside the particular display to review the generators preprogrammed
setpoints or parameters.
5. The "STATUS" Light Emitting Diodes (LED's)
• These 6 LED's will illuminate to display the current operational status of the generator;
- Alarm/Fault: Indicates active or inactive alarms, but not reset shutdown alarms.
- Warning: Indicates an active or inactive alarm, or a warning alarm that has not been reset
- Ready/Manual: Indicates the controller is ready to start and in the manual mode.
- Ready/Auto: Indicates the unit is in the "AUTO" mode ready for the remote start signal.
- Running: Indicates the unit is running.
- Supplying Load: Indicates a load is being applied to the generator.

GENERATOR MONITORING

Generator information is shown on the Liquid Crystal Display (LCD) window in a toggling manner with the Engine
information after the first 60 seconds of operation, then every five seconds thereafter. The generator display
screen will show frequency, line to neutral voltage, line to line voltage and amperage.
Note: When loading the generator, it is important to observe the amperage to determine the load balance on
each line of the generator. Minor load unbalances, usually 5% or less, will not cause any particular problems.
Every effort should be made to distribute the load equally between all lines.
• Hertz: Displays output frequency.
• Generator Output Voltage: Line to Neutral display, single phase (1Ø).
• Generator Output Voltage: Line to Line display, 3 phase (3Ø).
• Amps: Displays the AC output amperage produced by the generator.
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