Inverter User Manual
Version 1.14, June 2020
3
1.- INVERTER DESCRIPTION
The SOLENER inverter is a pure sine wave inverter (DC to AC converter),
designed for stand-alone photovoltaic applications and controlled by a microprocessor.
It has been designed to provide an alternating sinusoidal output voltage of 230 volts, 50
hertz (there are also versions of 120 volts and/or 60 hertz) from an input voltage of 12,
24, 36 or 48 volts provided from electrochemical accumulators. It employs state of the
art components, such as MOSFETs, 32-bit microcontrollers or LCD modules. In
addition to its basic inverter function, it allows monitoring of the photovoltaic installation
energy consumption, displaying information regarding energy, current intensity and
other operating parameters. It is manufactured with full-bridge configuration and uses
PWM (Pulse-Width Modulation) control.
The SOLENER inverter can supply energy to different loads such as resistive
loads (p. e. heater), inductive loads (refrigerators), motors (vacuum cleaners), and
rectified loads (computer). It can supply power surges (within its power range) to
provide the short peak of energy required
to start some appliances or machines such
as TV’s, projectors, videos, computers, refrigerators, washing machines, submersible
pumps, sewage, heating boilers etc, without any difficulty.
The inverter protects itself against short circuit, overload, over-temperature,
voltage surge (overvoltage) and reverse polarity. Protection against reverse polarity
does not occur through the destruction of the input fuse (as it occurs in other
commercial inverters), it simply does not work.
Start-up and shutdown is possible through any PROFESSIONAL SOLENER
®
CONTROLLER (using an optional control line). In addition, since the beginning of 2010
almost all versions feature a relay for generator start, which is activated (closing a
potential-free contact) when the battery needs recharging. This relay can be configured
to perform other functions; see some of these possible functions in section 13 or
consult your need with us.
This inverter reconnects automatically when the circumstances which caused
the shutdown have disappeared (e.g. battery over voltage or under voltage, over-
heating or a control signal sent from the controller). If it detects overload or short-circuit
following the elimination of the problem you will have to make a manual power cycle
(u
pon request
,
reset can be automatic
).
Load detection is a special state (standby mode) whereby the inverter reduces
its power consumption to a minimum whilst waiting for a load equal to or greater than
the specified for its ignition. When it detects this load, the inverter starts and goes into
normal mode of operation. If power consumption falls below the set limit, the inverter
goes back into the detection mode. It is possible to adjust the load detection level from
0 Watts (continuous operation) up to about 100 Watts. If the power of the connected
load is lower than the specified threshold power, the inverter will start and stop once
per second until the load surpasses this set point. This will produce a characteristic
blinking (especially notable in light bulbs).
Versions prior to 4.00 have a potentiometer placed on the front panel to adjust
the load detection threshold, whilst in all other versions this is adjusted through the
menu, by pressing “Enter” and selecting the “Load threshold” option; when doing so, a
