User Manual

Enerdrive ePOWER Inverter Owners Manual (Rev. 1.0)Page 20
The input battery
under-voltage
warning (“E05”) and/
or shutdown alarm
(“E01”) occurs in
advance even when
the battery voltage
seems to be OK
Make sure you are measuring the voltage
directly at the DC-Input terminals of the unit so
as to check the possible voltage drop between
the battery posts and the unit input terminals
Excessive voltage drop between the battery
bank and the inverter, due to high resistance
of the DC wires, battery disconnect switch,
fuse or DC breaker if any. Make sure to use the
recommended wire’s gauge and length. Try to
use fuses (or DC breakers) with very low voltage
drop (i.e. Class T type fuses, etc.)
Battery bank with high internal resistance,
resulting in a voltage drop proportional to the
DC current draw from the unit.
Too much battery voltage drop due to excessive
drawing current in relation to the battery bank
capacity. Increase the battery bank capacity (i.e.
adding more batteries in parallel) and/or reduce
the load being fed by the inverter
Battery damaged and not able to keep a
good state of charge. Replace the battery (or
batteries)
Battery bank is getting discharged.
This is normal condition. The E05 warning and
then followed by the E01 shutdown occur while
the battery bank is getting discharged. Charge
the battery bank.
Make sure to measure the battery voltage
just before the “E01” battery under-voltage
shutdown in battery (inverter) mode occurs
and compare it with the corresponding voltage
threshold in the specications table. (allow +/-
5% of tolerance)
Just after the E01 occurs, the battery voltage
increases rapidly since the battery is not under
load condition after the inverter shutdown.
This is normal in all battery banks and can
confuse the user thinking the under-voltage
shutdown that triggered the E02 alarm occurs in
advance at higher voltage thresholds than the
ones specied.
The E05 warning and E01 shutdown alarm occurs
well in advance due to the “SdH” setting
If you want to extend the run time of the
battery bank as long as possible without the
need to keep enough battery state of charge for
engine cranking purposes, make sure to set the
under-voltage shutdown threshold to low values
setting (“SdL” - factory default setting) rather
than the “SdH”.