FAQ

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Other questions? Do not hesitate to send us an e-mail at contact@imeon-energy.com

An inverter converts direct current (DC) from a battery or solar panels into alternating current (AC) to operate domestic electrical appliances.

Photovoltaic solar panels power both the home network of the house and a battery park. When the instantaneous production of photovoltaic solar panels is equal to or less than the instantaneous consumption of the house, this production replaces the call to the public grid and generates savings. When the instantaneous production of photovoltaic solar panels is greater than the instantaneous consumptionof the house, the excess is stored in batteries, to be sent later to the domestic network.

If your inverter fails, do not attempt to repair it by yourself. Call your installer. He is perfectly trained to perform a quality repair. If a defect is found, he will call the dealer who will be able to make a more precise diagnosis and possibly to provide the spare parts.

The guarantee shall be valid for 10 years or 120 months in case of IMEON products connected to the Internet (the connection must be established for minimum of 95% of operating time). The guarantee shall be valid for five years or 60 months in case of IMEON products not connect to the Internet.

Your IMEON inverter has an LCD display on the front panel that allows you to check its status and its function mode. Thanks to its built-in Wi-Fi, you can monitor your entire energy production and consumption on a computer, a tablet or a smartphone.

IMEON inverters are among the most reliable and robust on the market. Coming from more than 3 years of research and development, they are compact and real All In One. This means that it can operate in 4 different modes (On-Grid, Off-Grid, Back-up, ou hybrid mode).

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They adapt themselves to all configurations. By integrating an inverter, a load regulator and a source inverter, they simplify the implementation and greatly reduce the installation time.

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Imeon is the nerve center of your solar installation. It is an intelligent inverter that optimizes efficiency by choosing the best mode of use: direct consumption, storage of surplus, use of the grid.

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Choosing IMEON is also choosing an adaptable and flexible product. The associated applications will allow you to better manage your energy consumption by advocation new consumption behaviors for example

TECHNICAL FAQ

DC questions:

The inverter must be connected to a 48 Vdc nominal voltage batteries bank only. If the battery voltage connected is 12 Vdc or 24 Vdc the inverter will not detect the batteries. Contact your installer to check the batteries connections.

Open the circuit breaker between the PV and the inverter. Contact your installer in order to check the sizing of the PV string installed. Measures the DC voltage between (+) terminal and (-) terminal of the PV string. The DC voltage must be less than the maximum specified voltage indicated on the side plate on the side of the inverter. The PV DC voltage and current must be in the MPP range of the “PV INPUT”. It is essential to match the specifications of the inverter in order to have a correct operation.

Reduce the power of the load below the PV power available, so the batteries can be charged by the PV. Check that the fuses holder of the batteries are closed and in good state. Check that the fuses holder of the PV are closed and in good state. Check that the batteries are in good state and the nominal voltage is 48 Vdc. In factory settings, the inverter charges the batteries from 01H00 to 04H00 with the public grid. If you wish to change the time window, it is possible to do it with the IMEON MANAGER software.

It is possible to enable or disable the parameter “Allow AC to charge batteries” with the software IMEON MANAGER. In the “Flow manager” tab, set the parameter to “yes” or “no” then validate with the “OK” button and select the time window where the AC grid will charge the batteries and validate with the “OK” button.

IMEON smart inverter is using two internals voltage parameters to re-discharge the batteries in order increase life time of the batteries. The re-discharge voltage when grid is present is set at 54 Vdc. Before to be able to discharge the batteries again, the batteries voltage must reach 54 Vdc. Then the batteries will be able to be discharged until the “DOD with grid” set in IMEON MANAGER. The re-discharge voltage when grid is not present is set at 48 Vdc. Before to be able to discharge the batteries again, the battery voltage must reach 48 Vdc. Then the batteries will be able to be discharged until the “DOD without grid” set in IMEON MANAGER. If the DOD is set at 42 Vdc, the IMEON will switch off itself to protect the batteries against deep discharge.

When the insulation resistance of the PV is below 1MΩ, the IMEON indicates a “Riso” failure. Measure the PV voltage +/PE, -/PE and +/- in order to identify the earth leakage of a positive or negative pole on the string. Contact your installer in order to check and correct the earth leakage failure of the installation.

The SOC value displayed is an indicative value based on mathematical calculations. This SOC value give and indicative estimation and have accuracy tolerance. If you wish to have a more accurate SOC display, you will have to get an external meter. The IMEON display the SCO (State of Charge) depending of the batteries voltage. It is important to check the batteries used (GEL or AGM) before to install them. Make sure the battery absorption (Bulk) charge voltage and Float charge voltage are correctly set with IMEON MANAGER Software. On factory settings the absorption (Bulk) charge voltage is set at 56 Vdc and Float charge voltage is set at 54 Vdc. Contact your battery manufacturer to validate the battery sizing and the charge voltages with IMEON inverter. Contact your installer to check the settings values.

Lead Acid (GEL, AGM, OPz) can be used with IMEON Inverters. Together with your IMEON MANAGER settings, a careful reading as well as analysis of your batteries manufacturer specifications is the key to a well sized installation.  Among batteries dislikes you’ll find : prolonged and uncompleted charge periods, too deep and severe discharge cycles (DODs set to high), mismanaged charging cycle parameters. This is why you must care about the bulk and float voltages, the charge and discharge current extremums.
A too high charging voltage or a too elevated charging current will lead to battery damages. By opposition, too low bulk and float voltages will lead to poor results, a battery park degradation and finally to its end of life. A too deep discharge setting (Say a DOD set at 100% for instance) will cause your battery to become unusable sooner or later.
All this care focused on these previous points will be rewarded by optimised and comfortable results.
Finally, consider that your overall sizing must integrate the capability to charge your batteries : an insufficient PV sizing or a neglected possible charge from the Grid will also drive you to disappointing results.
Most of Lithium technology batteries parameters are specific and automatically managed for some of the parameters.
To allow use for them, you must check our provided IMEON compatible references list (please contact your distributor or our sales representatives).

AC questions :

Make sure the public grid is only connected to the “GRID CONNECTION“ socket and not the “AC OUTPUT“ socket of the inverter. Never connect the public grid or other energy sources on the “AC OUTPUT” socket, this will damage irremediably the inverter. To activate the “AC OUTPUT” press and hold the “OK” button 3 seconds until an audible sound can be heard, then release the “OK” button. The house icon and the arrow appear on the LCD screen indicates that the output of the IMEON is activated.

Use an adapted AC circuit breaker between the IMEON and the public grid and between the IMEON and the load. When the PV and the public grid feed together the load, the current is increased. Check and identify the Live and Neutral by measuring N/PE and L/PE. Contact your installer to check the measurement

The IMEON inverter has a self consumption of several dozen watts. If there is high grid consumption from the public grid, then open the fuses holder between the batteries and the inverter, open the fuses holder between the PV and the inverter and open the AC breaker between the load and the inverter, remove all consumers between the public grid and the inverter. The inverter must be powered only by the public grid. Then measure with a calibrated wattmeter the power consumption between the public grid and the IMEON. Contact your installer to do the measurements.

The load power is higher than the power the inverter is able to feed. (i.e. with IMEON 3.6: 3kW with PV without public grid and 6kW with public grid). When the public grid is connected, the inverter LCD will indicate “Overload” when the load power is higher than the power that can deliver the IMEON, remove excess of load.

It is possible to enable or disable the feeding to the public grid with the IMEON MANAGER Software. Set “Yes” or “No” in the parameter “Allow fed-in to the grid” in the “Flow manager” tab, then validate with the “OK” button.

Make sure to have connected the Live, Neutral and Earth correctly on the “GRID CONNECTION” socket. Make sure the frequency and voltage are in the range of the operation of the inverter. In the three phase’s inverter, make sure the clockwise phase rotation is correct L1, L2 and L3. Contact your installer to check the AC wiring.

Other questions:

Pressing any button on the inverter will activate the backlight of the LCD screen. If the display does not switch ON, then disconnect all power sources “GRID CONNECTION”, “AC OUTPUT”, “DC BATTERY” and PV INPUT”. Then wait 15 minutes before connecting only the public grid on the “GRID CONNECTION” socket. The display must switch ON after 3 seconds. If the display does not switch ON contact your installer.

The IMEON MANAGER operates only with windows. The inverter must be connected with a USB cable only. Make sure that all software causing conflict are closed before to start IMEON MANAGER Software. Make sure the USB cable is not damaged. Disconnect the RS232 connector if the IMEON communicate with Lithium batteries.

Make sure the fans are spinning freely and cooling correctly the system. The inverter must be installed in a dry and well ventilated area with no presence of dust. Excessive dust reduces the efficiency of the inverter and may cause internal overheating and could lead to fire hazard.