Jntech JNP22KH-V5, User Manual

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Ensure that the polarity of PV arrays is correct.
●
Ensure that the AC Input R
、
S
、
T and GND is correct.
●
Check whether the system pipeline is unobstructed or not.
●
Switch on the DC-side circuit breakers.
After finishing the above steps, then begin initialization.
According to the pump motor rated current value on the nameplate, setting inverter
overload protection value, the method is: modify the “Imotor” value equal to 1.2 times of
the motor rated current, the details please refer to chapter
"8.3.2.3 DSP Parameter
Settings" " 8.3.4 parameters " settings.
After finishing the above steps, machine shall start operation after long-time
pressing the
“ON/OFF”
key for 3s; check if the Solar pump system works
properly or realize suitable head of delivery and flow. Press
“ON/OFF”
and
stop the inverter. Disconnect the DC side input of the PV array, connect the AC
input side power supply, and repeat the above operations.
Note
！
The inverter mainly has 5 working modes, the factory default is 6 (continuous
motor parameter detection mode): when the debugging mode is 0, it means
that the inverter is in vector mode + reliable mode. Under this mode, it is
vector control mode and reliable operation mode.
When the debugging mode is 1, it means that the inverter is in VF mode +
reliable mode. Under this mode, it is VF control mode and reliable operation
mode.
In the operation of these two modes, when the system is jointly powered by
photovoltaic and power grid, in order to ensure full load operation of the
system, the inverter will draw electricity from both the power grid and
photovoltaic at the same time to ensure stability of the system.