© 2010 Magnum Energy, Inc.
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5.0 Operation
5.3.4.1 System Fault Messages
These fault messages are usually caused by some external issue that directly
affects the inverter/charger system.
Low Battery
– The inverter has turned off to prevent the batteries from
being over-discharged. The fault message displays and the FAULT (red) LED
illuminates when the battery voltage drops below the SETUP menu’s
02B
LBCO
setting for more than one minute. The inverter will automatically restart
and resume operation when the battery voltage rises to
≥
12.5 VDC (12-volt
models),
≥
25.0 VDC (24-volt models), or
≥
50.0 VDC (48-volt models).
Remedy:
This fault will also automatically restart if AC power
such as utility power or a generator is connected to the inverter/
charger’s input and battery charging begins.
High Battery
– The inverter has turned off because the battery voltage
is at a very high level. This fault message displays and the FAULT (red) LED
turns on when the battery voltage is above the High Battery Cut-Out (HBCO)
value. This fault will automatically restart and resume operation when the
battery voltage drops 0.3 VDC (12-volt models), 0.6 VDC (24-volt models),
or 1.2 VDC (48-volt models) below the HBCO value.
Info:
The HBCO value is dependent on your inverter revision
and model. Normally, the HBCO value for the ME/MM/RD Series
inverters is 16 VDC (12-volt models) or 32 VDC (24-volt mod-
els); and, the HBCO value for the MS/MMS Series inverters is
17 VDC (12-volt models), 34 VDC (24-volt models), or 68 VDC
(48-volt models).
Remedy:
This fault usually only occurs when an external DC
charging source is charging the inverter’s battery bank. Turn
off any other additional charging source to allow the DC voltage
level to drop.
•
•
Low Battery
appears on the LCD
and the FAULT (red) LED is on. The
PWR (green), CHG (green) and INV
(green) LEDs are off.
FAULT
PWR
CHG
INV
Low Battery
Settings/Info...
Figure 5-18, Low Battery Fault
High Battery
appears on the LCD
and the FAULT (red) LED is on. The
PWR (green), CHG (green), and INV
(green) LEDs are off.
Figure 5-19, High Battery Fault
FAULT
PWR
CHG
INV
High Battery
Settings/Info...