Magnum Digital Controller (Mdc); Digital Controller Features And Functions - Magnum MMG25FHZ Operating Manual

MAGNUM DIGITAL CONTROLLER (MDC)

The Magnum Digital Controller (MDC) is an enhanced digital generator controller used to start, stop and monitor the
operation of the generator and the engine. The controller constantly monitors vital generator and engine functions
for a number of pre-programmed alarm and fault conditions. When a fault condition occurs, the engine will shut down
automatically and the Liquid Crystal Display (LCD) window will display the fault that caused the shutdown; to resume
operation the fault condition must be resolved. The controller has the ability to provide the display readout in English
and Spanish; other languages are available. A screen print out of the display screen is also available. This controller
also records a "History" of the unit's performance which may be viewed at any time and will not be removed or lost
when the controller is powered down.
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The MDC panel consists of five sections, including: the "CONTROL ON" / "CONTROL OFF" Toggle Switch and Fine
Voltage Adjustment Screw; the "OPERATION" keypad; the LCD window; the "DIAGNOSTICS" keypad; and the
"STATUS" Light Emitting Diodes (LED's). The following is a brief summary of the operation of each section of the
control panel:

DIGITAL CONTROLLER FEATURES AND FUNCTIONS

1. The "CONTROL ON" / "CONTROL OFF" Toggle Switch and Fine Voltage Adjustment Screw
• Control On/Off Toggle Switch
This toggle switch powers-up the control panel and the controller.
• Fine Voltage Adjustment Screw
This screw may be adjusted to set the generator output voltage after the voltage selector switch has been
changed from one phase to another. This adjustment must be accomplished within 45 seconds of start-up
so that the unit does not experience a shut down alarm for "SENSING".
2. The "OPERATION" Keypad
• "ENGINE START" Button
The Power Screen Display must be in the "MAN" mode in the upper left corner of the LCD window display
and the "Ready/Manual" LED lit in the "Status" portion of the controller. Press the green "ENGINE START"
button to start the unit.
• "ENGINE STOP" Button
Press the red "ENGINE STOP" button to shut down the unit and start the "Stop Value" timer.
• "MANUAL " Button
Press this button to change from the Automatic (Remote) starting mode to Manual starting mode.
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