Sensata MAGNUM ENERGY MM Series, Руководство пользователя

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Troubleshooting
4.0 Troubleshooting
The MM Series inverter is a fairly simple device to troubleshoot. There are
only two active circuits (AC and DC), as well as a charging circuit in some
of the models. Use the following chart to help you troubleshoot any issues.
Table 6, Troubleshooting Guide
Symptom Possible Cause Recommended Solution
Low Battery
Voltage
(status indicator
blinks x1/4 secs)
The battery voltage level has
dropped below the Low Battery
Cut Out (LBCO) set-point for
more than one minute
(10.0 VDC = LBCO default).
Battery voltage too low. Check fuses/
circuit-breakers and cable connections,
and battery voltage at inverter’s
terminals. Batteries may need to
be charged—fault condition will
automatically clear when the battery
voltage exceeds 12.5VDC.
High Battery
Voltage
(status indicator
blinks x2/4 secs)
The battery voltage is above 15.5
VDC. The inverter automatically
resets and resumes operation
when the battery voltage drops
below 15.5 VDC.
Usually occurs only when an additional
charging source (alternator, solar
panels or other external charging
sources) is used to charge the battery
bank. Reduce or turn off any other
charger to the inverter batteries to
allow the voltage level to drop.
Over-
temperature
condition
(status indicator
blinks x3/4 secs)
The internal temperature of
the inverter has risen above
acceptable limits; caused by
loads too great for the inverter
to operate continuously, or by
lack of ventilation to the inverter.
Once unit cools, it automatically
resets and resumes operation.
Reduce the number of electrical loads
that you are operating, this will avoid a
repeat Overtemp shutdown if the cause
was too many loads for the ambient
conditions.
Check ventilation around the inverter,
ensure cool air is available to pass
through the inverter.
AC Overload
(status indicator
blinks x4/4 secs)
The inverter has turned off
because the connected loads are
larger than the inverter’s output
capacity, or the output wires are
shorted.
Reduce the AC loads connected to the
inverter or remove all AC output wiring,
and then restart the inverter.
Internal fault
(status indicator
blinks x5/4 secs)
This fault occurs when an internal
fault is detected.
To clear, an inverter reset is required.
Remove DC power to the inverter, or
press and hold down the inverter’s
power switch for 15 seconds (until
green Status LED lights). If this fault
does not clear, the unit will need to be
serviced.
Inverter’s status
light is off
Inverter is switched OFF, or
there is no DC voltage (battery)
connected to inverter.
Switch the inverter ON. Connect a
battery with correct voltage to the
inverter.
AC input won’t
connect (AC
IN on remote
blinks)
Incoming AC voltage will not be
accepted if it is below the VAC
Dropout setting (80VAC = VAC
Dropout default).
Check the incoming AC voltage to
the input of the inverter, ensure it is
present and above the VAC dropout
level.
Appliances turn
off and on; or
there is low AC
output power
Loose AC output connections. Tighten AC output connections.
Loose/corroded battery cables. Clean and tighten all cables.
Low batteries. Recharge or replace batteries.
Inverter AC
output voltage
too low or too
high when using
an AC voltmeter
Wrong type of voltmeter used
(displays 90 VAC to 130 VAC
depending on the battery
voltage).
Most meters are made to read “average
AC voltage”. AC output of the MM is
a modi fi ed waveform which requires
using a “true” RMS voltmeter to
correctly read the output voltage.
While charging,
DC charge
voltage is higher
or lower than
expected
If the Battery Temperature
Sensor is installed, it will increase
or decrease the DC voltage
level depending on temperature
around the battery sensor.
This is normal.