Magnum Energy ME-RTR Router - Manual (Page 76)

©
2014 Magnum Energy, Inc. Page 68
Operation
Overcurrent 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
Overcurrent
Settings/Info...
Figure 5-40, Overcurrent Fault
• Overcurrent (Overcrnt) – This fault may be the result of an excessive AC load and causes the
inverter to shut down to protect internal power components. If the overload condition lasts for less
than 10 seconds, the unit automatically restarts and resumes operation. However, if the overcurrent
condition occurs for more than 10 seconds, the unit shuts down and requires a manual restart.
Remedy: This fault usually occurs because the connected AC loads are larger than
the inverter’s output capacity, there is a wiring short on the AC output, or the wires
are incorrectly wired. Once the AC loads are reduced or the output wiring is corrected,
manually restart the inverter to resume operation. If this fault condition continues after
all of these recommendations, perform a inverter reset (see Section 6.2).
Overtemp 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
Overtemp
Settings/Info...
Figure 5-41, Overtemp Fault
• Overtemp (OverTemp) – This fault message indicates the inverter/charger has shut down
because the internal power components (FETs and/or transformer) have exceeded their safe
temperature operating range. Unit will automatically restart and continue operation once it cools.
Remedy: If the fault occurs while inverting, reduce the load on the inverter. If it occurs
while charging, turn down the charge rate. If this fault happens often, ensure the inverter
is not in a hot area, has proper ventilation, and the cooling fans are working.
FAULT
PWR
CHG
INV
Stuck Relay
Settings/Info...
Stuck Relay appears on the LCD and the FAULT (red)
LED is on. The PWR (green), CHG (green), and INV
(green) LEDs are off.
Figure 5-42, Stuck Relay Fault
• Stuck Relay (Stuck Ry) – This fault message displays when the inverter is “inverting”, but
has determined that the internal AC pass-thru relay (that should be open while inverting) is closed.
Remedy: The AC pass-thru relay is likely stuck—likely due to damage to the contacts
from trying to handle currents greater than they are rated. This is usually caused by
not protecting the relay from handling high continuous currents, or by switching high
current inductive loads. The internal relay contacts are rated to handle 30 amps AC
continuously and should be protected with a breaker sized no larger than 30 amps.
If you are connected to an AC source (grid or generator) and running large inductive
loads (e.g., pumps, motors, etc.,) on the inverter output, turn those particular loads off
prior to removing the AC input source. This fault requires an inverter or power-down to
resume operation (see Sections 6.2 & 6.3).