Phocos CXNup 2B, User Manual

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Dear Customer,
Congratulations on buying your Phocos product! Please read the instructions carefully and
thoroughly before using the product. Your new CXNup 2B controller is a “state-of-the-art”
device which was developed in accordance with the latest available technical standards. It
comes with a number of outstanding features, such as:
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Charging of two individual batteries
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User friendly LCD showing extensive system information
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Four-stage PWM charging algorithm with integrated temperature compensation
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Full electronic protection
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Data logger information that can also be exported via MXI/MXI232 interface
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Touch keys ensuring long lasting operation
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important instructions for CXNup 2B controller that shall be followed
during installation, operation and maintenance of the charge controller.
RISK OF FIRE: ATTACH THE TEMPERATURE SENSOR TO THE BATTERY.
Battery type: Lead acid (GEL, AGM, flooded), LiFePO4
Nominal voltage rating of the battery: 12 or 24 V
Battery fuse: Use a fast acting fuse with an interruption rating capacity of 1000 A on the battery
side. We recommend to use a fast acting melting fuse (e. g. car type fuses) as close as possible
to the battery terminal. The maximum current rating should be 1.5 times of the nominal current
of the charge controller. Respect the maximum current rating of the BMS when using LiFePO4
batteries.
Please do not disassemble or attempt to repair Phocos products. Phocos's charge controllers do
not contain user serviceable parts.
Please observe all instructions with regards to external fuses/breakers as indicated.
Maintenance and installation notes
When installing or working on the PV system, please disconnect the PV (solar) modules from
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