1. Connect the solar panel + (positive) wire to the PV+ terminal on the controller. Connect the solar panel-(negative) wire to the PV- terminal on the
controller.
2. Connect the LOAD wire to the OUTPUT terminal of the controller. Please select the LOAD with the correct power, the LOAD power is not more than
230V/4000W, and the resistance value isn’t less than 13 ohms.
● Load L line to OUTPUT L;
● Load N line to OUTPUT N;
● Load PE line to OUTPUT PE.
WARNING! The controller is only suitable for using solar power to heat resistance heating components, and the controller load can only be used
to connect resistance heating equipment with a mains heating power within 230V/4000 watts, such as AC water heaters, heating wires, heating rods,
PTC. Capacitive or inductive loads may cause controller damage.
3. AC input connection. Connect the AC Grid line to the AC in terminal on the controller.
● AC Grid L line to AC IN L;
● AC Grid N line to AC IN N;
● AC Grid PE line to AC IN PE.
3.2.6 POWER-ON
WARNING! Pay attention to the terminal mark!
Connecting the photovoltaic to the AC IN or AC OUT terminal or connecting the AC IN to the photovoltaic connection terminal or connecting the AC IN
to AC OUT connection will cause the controller irreversible damage.
WARNING! Note that the polarity is correct!
If the positive and negative poles of the solar cell array are connected reversely, the controller will not work normally. Note that before powering on,
you must make sure that the ground is wired correctly. Poor ground wiring will aect the mains leakage protection function of the controller and cause
danger to the user!
● Conrm that the polarity of the solar cell array is correct.
● Conrm that the ground wire of the mains plug is in good condition.
● Close the PV input breaker. If the voltage from the solar panel is suitable at this time, the controller will start to use solar energy for heating.
● Close the AC input breaker. If the voltage from the solar panel is not available, will switch to AC in and AC out.
3.2.7 POWER-OFF
WARNING! Pay attention to the power-o sequence!
Aer ensuring that the AC connected to the controller and the solar panel connected to the controller are completely disconnected, can remove other
cables.
4. Operation instructions
Aer the MPPT controller installed, it will operate smartly. Solar is the rst priority source, when solar is insuicient, will switch to AC automatically.
4.1 Maximum power point tracking technology
The maximum power point tracking technology can detect the power generated by the solar panel in real time and track the maximum power
generated by the solar panel to ensure that the solar cell array can work at the current maximum power point. This process is automatically realized
by the DSP through a series of calculations.
4.2 Protection function
Solar panel power is too high
The maximum output current of the controller is limited by the rated value 350 VDC. When the power of the solar cell array connected to the controller
exceeds the rated maximum value, the maximum output power of the controller will be limited within the rated value, at this time, the controller may
not work at the solar cell array maximum power point. The utilization rate of the solar cell will be reduced.
Solar panel input line short circuit
When the solar panel input line is short-circuited, it is equivalent to no solar input. Aer the short-circuit is removed, the controller will automatically
resume normal operation.
Over temperature protection
If the ventilation around the controller is poor, the temperature of the controller body will be too high, exceeding the normal operating temperature
range, the controller will continuously reduce the photovoltaic output power until the output stops. When the body temperature drops below the
protection temperature, the controller automatically restores output.
4.3 Alarm function
AC input voltage high alarm
When the AC voltage exceeds 260VAC, the Fault indicator will be lit, the AC output will be cut o. If the voltage drops below 260VAC, the Fault indicator
will be o, and the controller recovers to operate.
PV input voltage high alarm
The open circuit voltage of the solar cell array connected to the controller should be less than 350VDC. If the open circuit of the solar cell array exceeds
the maximum input voltage specied by the controller, the controller will stop working or even be damaged.
4.4 Inspection and Maintenance
Please carry out the following inspections twice a year to extend the service life of the controller.
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