User manual

E.7.5 Battery Condition
Deep discharging of batteries leads to high losses in capacity and early aging.
That is why the Invertek will constantly monitor the battery condition. When battery
voltage gets too low the Invertek switches OFF. The multi-display will show
“ ” or ” ” (Low voltage cut out P-12) the “RUN/STOP” LED RED blinks.
When the battery voltage returns to 12.1V / 24.2V / 48.4V, the Inverter switches ON
automatically. One minute before the Inverter switches OFF due to low voltage a
buzzer will be heard.
If the Auxiliary Contact has been programmed for “Low Battery” then the contact
will be active when the buzzer sounds. This could be used for example to start an
emergency back up generator, creating a no break energy supply.
The low voltage is set to 11.8V / 23.6V / 47.2V. These settings are standard for
most batteries. The voltage levels are maintained by the built-in
Battery-Management-System of the Invertek which looks at the load and battery
condition and adjusts to suit.
This setting is comparable with the levels of 10.8V / 21.6V / 43.2, which are given
for most batteries on nominal load.
All voltage levels can be adjusted to suit your system. To adjust these levels by the
Parameters P-12,P-13,P-14, P-15 and P-16. Check your battery supplier or
system installer for the suggested values for your batteries.
( Lead-Acid Battery Three-Stage Charger)
-19-
Absorption Stage
Equalization Charging