Description:

        These are sinewave inverters which have been designed specifically for solar energy applications and which are microprocessor controlled. They use PWM modulation with full bridge. They comply with the applicable standards about harmonic content and EMI-RFI compatibility. They are protected against short circuit, overload, overheating, overvoltage, transitories and polarity inversion. Polarity inversion does not destroy any fuses as in inverters from other manufacturers.

        Some versions have an input control which allows the inverter to be remotely switched on and off. Other versions have buttons, allowing the configuration of the device depending on the user requirements. All inverters but the S250 have a LCD display, which can display information in Spanish, English, French, German and Portuguese as configured in the main menu.

        In some versions the inverter reconnects automatically when the conditions that caused the fault disappear (low or high battery, overheating, external control). It does not reconnect automatically in case of overload or short circuit (optionally, it can restart after a few minutes).

         The tracking threshold can be adjusted using a potentiometer located in the front from 0 W (always connected) to 60 W. If the connected load power is lower than that adjusted with the potentiometer the light will blink with a frequency of 1 Hz. This adjustment is necessary because the applications are very wide and the installation cabling may also cause power drops (by capacity and by radiation).

    Specifications (24 Volts/1500W version):

Operation range: 20 to 32 Volts
Voltage thresholds: depend on the battery model.(user configurable)
Output frequency: 50Hz +/- 0,05% (quartz reference) (60 Hz optional)
Output voltage: 230Vca +/- 1%  (120Vca optional)
Nominal Power: 1500VA @ 25ºC, sea level.
Peak power: > 2800VA, 3''
THD: 0.78% at nominal power, resistive load
Efficiency: 86% at 100W, 93% at 400W, 90% at 900W (see the graph below).
Mean consumption in tracking mode: 70mA @ 24,00V
Ventilation: by convection or forced, depending on the internal temperature
Indicators: 7 LEDs, acoustic alarm and 2X16 LCD display with five languages (Spanish, French, English, Deutsch, Portuguese).
Acoustic noise: < 72 dBA @ 1 metre
 

        You can ask us for the Ciemat report (in Spanish) for more technical information. The user manuals of the S250 and S600 to S6000 are also available. The S1200 has been redesigned, allowing the output of 1500VA continuous, and is now named S1500 accordingly.
 

        Precautions:

    - DO NOT manipulate the interior of the device.
    - DO NOT connect an energy source at the AC inverter output.
    - DO NOT obstruct the ventilation grids.
    - DO NOT manipulate the output circuit before switching off the device, even though the inverter has cut the output. It can restart without warning in automatic restarting versions.
    - DO NOT drop metallic objects through the ventilation grids.
    - DO protect the inverter from direct sunlight, from water and from sharp temperature changes.
 

        General information:

        The available power is reduced with the temperature and altitude (-1,5% every 100 metres of increase in altitude).

        The inverter should be installed on a vertical surface, with the cables towards the bottom side, leaving at least 5 centimetres free at the top and bottom for ventilation. It should be installed high enough to avoid access to animals or children.

        The output voltage is very dangerous. Always install a differential switch at the inverter output and follow the applicable codes and standards for low voltage electrical installations.
 

        Operation:

        The description below corresponds to the S600 and above models. The S250 has only one LED for status indication.

        During start-up the device performs some verifications of its subsystems. If it finds any errors it shows the detected problem on the display and the LEDs: the output cut LED remains lit while other (depending on the fault) blink. This kind of faults does not allow the normal operation of the inverter and no output will be available until the problem is solved.

        During start-up the ventilator is activated for half a second. This is normal and is part of the self verification procedure.

        The output voltage will increase quickly (in 0.5 seconds, approximately) to the nominal voltage. If the inverter does not find loads higher than that predefined using the minimum power potentiometer, it will change to tracking mode, thereby reducing the consumption.

        When the battery voltage is lower than the low battery charge cut-off threshold, the inverter activates its audio alarm and lights the low battery LED once every second. After 10 seconds the LED remains lit, the disconnection LED also lits and the output is cut-off. If the battery voltage then rises above the restart threshold, the inverter will start again, switching off both LEDs (in the automatic reconnection version).

        If the battery voltage is higher than 32 V (in the 24V models) the high battery voltage LED lights up instantaneously along the disconnection LED. If the voltage then decreases to below the high restart threshold the inverter will restart (in the automatic reconnection version).

        When the power stage reaches the programmed temperature, the ventilator starts, and remains activated until the temperature then decreases below the minimum threshold. If the temperature continues increasing due to a high load consumption, the overheat and disconnection LEDs light up, and the inverter stops (but not the ventilator). When the temperature then decreases below the restart threshold the inverter starts again, switching off the two LEDs (in the automatic reconnection version).

        If 24 V are not supplied to the external control, the inverter lights the disconnection LED and shuts off. When the external control is again supplied with 24 V, the LED switches off and there will be again an output voltage. This is only valid for inverters with external control. The system can also be configured (upon request) so that the external control operates the other way round: when there is voltage it disconnects the output.

        If there is a short circuit at the output, the inverter limits the power to protect the installation. If after 10 seconds the short circuit continues the inverter lights the disconnection LED and cuts the output. Once the cause of the short circuit is eliminated it is necessary to switch the inverter off and then on again in order to regain an output voltage (magnetothermic function). The short circuit time accumulates, and 3 minutes without a short circuit are needed to compensate a second of short circuit.

        When the nominal power is exceeded the inverter limits the operation time (more overload, less time). After this time the inverter cuts the output, and the disconnection LED lights up. In order to regain an output voltage it is necessary to switch the inverter off and then on again (magnetothermic function).
 

        Indicators:

        The LED lamps operate in the following way:

        - Running (green): indicates that the device is powered-up and operating.
        - Tracking (green): indicates the presence of 230V in the output and the tracking mode.
        - Temperature (yellow): lights when the internal temperature is too high.
        - Low battery (yellow): blinks when the battery voltage is low and remains lit when there is a cut off caused by low battery voltage during the predefined time (10 seconds).
        - High battery (yellow): lights when the battery voltage is higher than 32V.
        - Short circuit (red): lights during a short circuit condition and remains lit when the short circuit persists for more than the predefined time (10 seconds).
        - Disconnection (red): lights when the inverter disconnects the output.

        The LED that remains lit along with the disconnection LED indicates the cause of the disconnection. If only the disconnection LED lights up, the cause is the external control or a long overload. To distinguish between these it is necessary to look at the display.

        The buzzer sounds for a short time every second during the delay time when the cut-off conditions appear (low battery LED blinking or short circuit LED lit).

        The LCD display indicates the general state of the device (input and output voltage and current, power, peak power, consumed energy, internal temperature, operation time...). It also indicates the origin of a disconnection. In the configurable versions (with keyboard) it also allows parameter configuration.