SPC Series Solar Pump Inverter Commissioning guidelines
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5 Commissioning guidelines
Cut off all power supplies connected to the inverter before terminal
wiring, and wait for at least the time designated on the inverter after
disconnecting the power supplies.
High voltage presents inside the inverter during running. Do not carry out
any operation on the inverter during running except for keypad setup.
By default, the inverter runs automatically after being powered on. If you
need to set parameters, comply with the procedure described in this
chapter.
5.1 Check before running
Ensure the following before powering on the inverter:
1. The inverter has been grounded reliably.
2. The wire connection is correct and reliable.
3. The solar DC input voltage is within the range allowed by the inverter.
4. The motor type, voltage, and power match the inverter type, voltage, and power.
5.2 Trial run
Close the DC circuit breaker, observe the water output of the pump. If the water output is
normal, the trial run is successful; if the water output is small, run again after swapping
the connection of any two motor wires.
5.3 Parameter settings
By default, the inverter runs automatically after being powered on. To set parameters, do
as follows: If the inverter has not been powered on, power on the inverter, and press
QUICK/JOG to enter the keypad-based control mode (LOCAL/REMOT off). If the
inverter has been powered on (Run indicator is on), press the STOP/RST key to enter
the parameter setting interface. After the parameters are set, you can power off and on
for a next run.
5.4 Advanced settings
Note: The default settings of the inverter can be adapted to most working conditions, and
advanced settings are not required in most cases.
5.4.1 Water discharge speed PI adjustment
If you has higher requirements on the water discharge speed, you can adjust the PI
parameters (P15.06–P15.10) appropriately. Setting the PI parameters to larger values
will result in a faster water discharge speed, but the motor frequency fluctuates greatly;
conversely, setting the PI parameters to smaller values will result in a slower water
discharge speed, but the motor running frequency is relatively smooth.
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