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Technical description
The manufacturer accepts no liability for any injury or damage to the product resulting from:
• Incorrect assembly or connection, including excess voltage
• Incorrect maintenance or use of spare parts other than original spare parts provided by the manufacturer
• Alterations to the product without express permission from the manufacturer
• Use for purposes other than those described in this manual
Dometic reserves the right to change product appearance and product specifications.
6 Technical description
The solar charge controller offers the following functions:
• Microprocessor-controlled, temperature-compensated IU0U charging programs for various battery types
• Auxiliary charging terminal for the starting battery with reduced charging voltage and current
• Buffer operation: Compliance with the charging characteristics even when the battery is charged with consum-
ers connected
• On-board mains suppression filter: Ensures parallel operation of the solar charge controller with other charging
sources, for example mains supply chargers or generators
• Automatic compensation of voltage loss caused by the charging cable length (house battery)
• Measurement output for electroblock (EBL): Enables showing the charging current of the house battery on the
vehicle's electroblock when equipped with DT/LT display panels
• Terminal "AES/RE" (only MT 350 PP, MT 550 PP): Transfers excess solar power to small loads or automatic
energy selector (AES) capable refrigerators
• Output for remote displays LED I or LCD II
The solar charge controller has the following protective mechanisms:
• High voltage and low voltage protection
• Deep discharge and overcharge protection
• High temperature protection
• Low temperature protection
• Protection against short circuit
• Protection against reverse polarity connected solar modules and loads
• Reverse polarity protection for the house battery
• Battery overcharge protection
• Reverse current protection
• Built-in temperature controlled cooling fan (only MT 350 PP, MT 550 PP)
The solar charge controller can be adapted to different battery types via DIP switches (chapter "Setting the
charging program" on page 22).
The temperature sensor monitors the battery temperature during the charging process to control and adjust the
charging voltage accordingly (chapter "Temperature sensor" on page 18).
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MT150PP, MT230PP, MT350PP, MT550PP
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