MPP solar controller for high-quality motorhomes, caravans and boats. Votronic solar controllers of the "MPP" (Maximum-Power-Point) series with "IU1oU2" charging characteristic are connected as a link between solar panel(s) and battery(ies). With MPP technology, the controller automatically determines the maximum power output (MPP) of the solar modules several times per second. It then transforms the voltage surplus of the solar module to a higher charging current for the battery (realised by high-frequency switching controller technology with high efficiency). This increase in charging current ensures shorter charging times and the best possible power utilisation of the solar system. The MPP solar controllers operate fully automatically, are maintenance-free and offer the following functions:

• MPP charging current increase compared to conventional controllers by 10 % to 30 % (efficiency > 95 %) due to the use of the latest controller technology (microprocessor). The increase in performance is particularly noticeable in the cooler seasons and, for example, during high snow, low and diffuse lighting (hibernation).
• For charging lead-gel, lead-AGM, lead-acid or LiFePO4 complete batteries (with integrated BMS, balancing, safety circuit and approval!) of the specified nominal voltages and for co-supplying consumers connected to these batteries in permanently installed systems with the specified battery capacities and charging programmes.
• The charging voltage is free of peaks and regulated in such a way that overcharging of the batteries is excluded.
• Two battery charging outputs: Automatic charging of the main supply on-board battery (BORD I) and back-up charging and charge maintenance (max. 1 A) of the vehicle starter battery (Start II) with protection against overcharging.
• Monitoring-free charging: Standard protection against overload, overheating, reverse polarity and battery back discharge (in case of insufficient solar power e.g. twilight, at night etc.).
• Parallel/buffer operation: Compliance with charging regulations even with simultaneous operation of loads.
• Overcharge protection: Regulates the charging current of the battery back when there is too much solar power and the battery is full, ensures that the battery is charged as much as possible when power is consumed by immediately recharging.
• "IU1oU2" charging characteristic: Defined charging voltage increase (U1) prevents harmful acid stratification (lead) and ensures equalisation charging of the individual battery cells (lead and lith.), then automatic trickle charging (U2).
• Charging cable compensation: Voltage losses on the charging cables are automatically compensated.
• On-board power supply filter: problem-free parallel operation with wind and motor generators, mains chargers, dynamos etc.
• CI bus connection: for displaying all relevant data on a central vehicle display.
• Measurement output for EBL, possibly existing electrical block in the living area of the vehicle: Enables convenient use of a (solar) current display built into the electrical block to check the solar system.
  Please be sure to check the compatibility of your Schaudt electrical block (EBL) and the corresponding control and display panel in advance, as we cannot accept any warranty for this.
• Switching output "AES" (only MPP 260 CI, MPP 360 CI and MPP 440 CI): Causes refrigerators with "AES" (Automatic Energy Selector, Electrolux / Dometic) to switch automatically from gas to 12 V operation if there is a permanent surplus of solar power.
• Connection for battery temperature sensor (art. no. 2001): In the case of lead batteries, the charging voltage is automatically adapted to the battery temperature, resulting in better full charging of the weaker battery in cold weather, and avoiding unnecessary battery gassing and load in summer temperatures.
  LiFePO4 batteries: Battery protection at high and especially at low temperatures.Absolutely recommended if the battery temperature can drop below 0°C during operation.
• Ready to plug in for connection of the Votronic solar display units LCD-Solar Computer S for optimum control of the system.

Note:Please note that the solar charge controller may only be used with solar panels up to the maximum power rating (Wp) and below the maximum permissible voltage (Voc). In addition, the controller is not suitable for an input connection (+/- solar panels) of wind, water, fuel or motor generators, power supplies, batteries or other power sources.

Optional accessories:

• LCD solar computer S (art. 1250)
• EBL cable set (art. 2007)
• Temperature sensor 825 (art. 2001)
• Solar Data Extender 3n1 (art. 1440)