Inverter User Manual
Version 1.14, June 2020
7
you to scroll manually from screen to screen or to maintain activated an individual
screen (always visible), when required. Pressing twice the central key will activate the
screen that provides input voltage and current readings, leaving it fixed.
5.- INVERTER PROTECTIONS
The inverter is protected against reverse polarity, overload, short-circuit, over
temperature and battery voltages out of a reasonable range. Please see below a
detailed description of each of the protections.
Contact our technical service (
) for factory setting of
automatic restart after overload or short-circuit.
5.1.- Overload Protection
See table in section 12 for overload limits.
The inverter gets latched in this condition. To reset, the power ON / OFF switch
is required to be switched OFF and ON again (manual start-up).
Before switching ON the inverter again, ensure that the cause of the
overload is removed.
5.2.- Over-Temperature Protection
As the inverter does not have, logically, 100 % performance efficiency, it
dissipates the difference in form of heat, particularly when the unit is operating close to
its nominal power capacity. When the inverter is subject to a heavy load for a
prolonged period of time, the overheating protection will be triggered in three stages:
first activating its internal fan, then if the temperature keeps increasing it reduces the
output voltage by 10 % and if temperature continues rising it cuts output voltage
altogether.
When the temperature drops down to a certain value, the unit starts
automatically.
5.3.- High and Low Battery Voltage Protection
The inverter can operate within the range of battery voltages between 5/6 and
4/3 of its nominal voltage (10 and 16 V for a 12 V inverter). This range is adjusted in
factory depending on the type of battery that will be used. The battery model type can
be selected using the Installer password.
Shutdown due to low DC input voltage prevents the battery from fully
discharging, otherwise it can cause irreversible damage to the battery. A delay time
has been foreseen in the control circuit allowing the battery voltage to drop
momentarily below these limits; this makes it possible to start induction motors or cold
filament lamps with this inverter. The “Low Battery Voltage” LED alarm will flash while
