Pv Water Pump Features - Veichi SI23 Manual

b. Q:Well-lit conditions, the drive is in standby mode 0.00Hz.
A:Check F21.01, observe what protection status is the drive in currently, check whether the parameters set is reasonable.
c. Q:DC current is incorrectly displayed.
A:Adjust F21.30, F21.31 for calibration.
d. Q:Well-lit conditions, frequency severe beating during operation.
A:Reasonably adjust F21.06 value, the adjustment is recommended to be in the vicinity of the default, too big or too small will
cause frequency oscillation.

6.3 PV Water Pump Features

1) Sleep Function
During the photovoltaic pump operation, the VFD will go into sleep state when the DC voltage provided by solar panels is
lower than F21.11 (sleep voltage threshold) due to objective factors, while the keyboard warning "A.LPn"; when DC voltage
provided by solar panels rises back to F21.12 (sleep recovery voltage) point, start timing and after F21.13 (sleep shutdown
waiting time), the drive starts running.
2) Low-frequency Protection Function
During the operation of the photovoltaic pump, for some reason, the output frequency is lower than F21.14 (low frequency
detection frequency), and after F21.15 (under frequency detection time) time, enters into the standby protection state, while the
keyboard warning "A.LFr"; after entering into the standby protection state and after F21.16 (frequency protection automatic
recovery) time, automatically resume to running state.
3) Dry Run Protection
During the operation of the photovoltaic pump, for some reason, the output current is less than F21.17 (dry protection
current detection), and after F21.18 (dry protection detection time) time, enters into standby protection state, while the keyboard
warning "A.LuT"; after entering into the standby protection state and after F21.19 (dry protection automatic recovery)time,
automatically resume to running state.
4) Over-current Protection
During the operation of the photovoltaic pump, for some reason, the output current is greater than F21.20(over current
point setting), and after F21.21 (over current protection detect) time, enters into standby protection state, while the keyboard
warning "A.oLd"; after entering into the standby protection state and after F21.22 (over current protection auto restore
working )time, automatically resume to running state.
5) Minimum Power Protection
During the operation of the photovoltaic pump, for some reason, the output power is less than F21.23(minimum power
protection value), and after F21.24 (minimum power protection detection time) time, enters into standby protection state, while
the keyboard warning "A.LPr"; after entering into the standby protection state and after F21.25 (minimum power automatic
recovery)time, automatically resume to running state.
6) Full Water Protection
Detect the water full alarm and low water level through two X terminals, realizing automatic level control. Wherein F21.27
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SI23 Solar Pump VFD Manual