Solar Pump Controller Manual
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3. Persons who have not passed specialized train are not allowed to conduct the frequency
inverter maintenance; Otherwise it may cause electric shock and damage the frequency
inverter.
1.3 Cautions in utilization
1. In application of this series frequency inverter, you have to confirm all machine insulation to
prevent damage to the equipment. Moreover, when the motor working in tough environment,
please periodic inspect the electrical insulation to ensure the safety of the system work.
2. If the motor adapter is not consistent with frequency inverter's rating current (The rating current
of the motor is far smaller than that of frequency inverter), please adjust the protective value to
ensure safe running.
3. In occasions such as load raising, usually there is negative torque and frequency inverter
breaks off for over-current or over-voltage. In this case, you should consider to choose the
matching brake unit.
4. Frequency inverter, in a certain output frequency range, can meet the mechanical resonance of
the load equipment. To avoid it, you can set up jumping frequency.
5. As output voltage of the inverter is pulse-wave type, if there is capacity which can improve
power factor or pressure-sensitive resistance which used for thunder-proof in the voltage
output side, the frequency inverter will break off or its parts will be damaged, so it is necessary
to dismantle them. Moreover, it is proposed not install switch parts like air switch and contactor
(if it is necessary to install switch on output side, please make sure the output electricity of
frequency inverter is zero when the switch is working)
6. At over 1,000 meters altitude, the inverter’s heat dissipation function worsened due to the thin
air, it is necessary to use less.
7. The inverter output voltage is pulse wave type. If using digital multimeter measurement,
deviation of the reading will be great. And the deviation is different by using different type of
digital multimeter. Under normal circumstances, while RMS 380V, digital multimeter reading is
around 450V.
8. Solar panel: many panels string or parallel. For rated voltage 380V controller, we suggest
working voltage between 480V to 560V while MPPT. What means the solar panel open circuit
voltage between 600V to 700V.
