Maintenance Screens - Generac Power Systems Magnum MMG75D Owner's Manual

General Information
can electronically adjust the voltage within limits to
prevent under-voltage or over-voltage conditions using
the on-screen instructions. This feature replaces a
traditional potentiometer. See
for more information.
Voltage Adjust
- Press , voltage will begin flashing
- Use and arrows to adjust voltage
- Press to confirm new voltage. Numbers will stop flashing
GEN
480
+ -
V
277
Figure 2-8. Voltage Adjust Button Screen
Alarm Mute Button
The Alarm Mute ( ) button silences the audible alarm.
Additional action will be required to fully disable the
active alarm.
AUTO/MANUAL Mode Button
The AUTO/MANUAL Mode ( ) button is used to change
the startup and shutdown modes of the unit. When
pressed once, the unit enters MANUAL mode and when
pressed and held for five seconds, the unit enters AUTO
mode. If in AUTO mode, pressing once will return the unit
to MANUAL mode.
Navigation Buttons
These buttons are used to navigate and interact with the
Power Zone™ controller
directional arrow (▲, ►, ▼, ◄) while on any of the
operator screens will open the maintenance screens, and
navigate the tabs and pages within the maintenance
screens. The Enter () button is used to select menus,
confirm alarms, and confirm altered settings.
Control Power Switch
Use this switch to start up and shut down the Power
Zone™ controller. This switch should not be turned off
when the unit is running.
Engine Start Button
Pressing the Engine Start (I) button while the controller is
in MANUAL mode will start the unit, provided there are
no shutdown errors and the engine satisfies the start
status. If the controller is in AUTO mode, the Engine Start
(I) button has no effect.
10
Fine Voltage Adjustment
Manual Mode
V
L-N Average
V
L-L Average
screens. Pressing
Engine STOP/RESET Button
In case of an emergency, press the
emergency stop button to stop the engine
immediately. Failure to do so could result
in death or serious injury.
Equipment Damage. The emergency stop switch
is not to be used to power down the unit under
normal operating circumstances. Doing so will
result in equipment damage.
Pressing the Engine STOP/RESET (O) button will shut
down the unit and put the controller into STOP mode,
whether in MANUAL mode or AUTO mode.
002803
The Liquid Crystal Display (LCD)
This window will display the various operator and
maintenance screens. By viewing these screens, the
operator will be able to monitor both the engine and
generator status while the unit is running.

Maintenance Screens

All of the data inputs from the engine, generator, inputs/
outputs, schedule and Power Zone™ controller are
visible on the maintenance screens.
The information displayed on the maintenance screens
can be used to identify, diagnose and troubleshoot unit
shutdown conditions and poor unit performance. The
maintenance screens can be accessed from any
operator screen by pressing any directional arrow (▲, ►,
▼, ◄).
The bottom of the screens have a list of available tabs,
any
with the currently displayed tab highlighted in blue. The
tabs can be selected by using the ► or ◄ buttons. To the
left of the tabs, the current/available pages are displayed.
The pages within a tab can be viewed by using the ▲
and ▼ buttons. Whenever a new tab is selected, the
current page will always be page one.
Generator Summary
The Generator Summary can be found at the top of all
maintenance screens and provides an overview of the
system.
SITE
Return Delay
Figure 2-9. Generator Summary Screen
WARNING
CAUTION
GENSET
480V/277V 3-Phase
10:00:00
Total
0.0
kW
0.0 0.0
Hz kVA
0.0
kVAr
kW 0.0
%
0.00
pf
kVAr 0.0 %
Owner's Manual for Generator
(000298)
(000246)
07:10
Energy Generator
0.0 kWh+
0.0
kVAh
0.0
kVArh
002790