Hitachi WJ-0001S, User Manual

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NOTE:
When you change any of the parameters above, the inverter power must be
rebooted in order to activate new parameters. Instead of rebooting, turning ON/OFF
of reset terminal works as same.
For Modbus data Listing, Please refer detail manual come with inverter
 Common Fault and Remedies

Fault: During running pump Find E09.x
– Under Voltage Alarm
Remedies: First to check x value,
Suppose E09.2, E09.3 and E09.4 means during deceleration, Constant speed and
acceleration condition
Then Check following parameters
F002
– 50second
F003
– 10 second
A017
– 02 MPPT enable
D004
– DC voltage of PV input power

Fault: If find E07.x
– Over Voltage Alarm
Remedies: First to check PV module Open circuit Voltage (Voc) value and no of PV
connected in series connection. If Total Voc value is higher than 800VDC then
Inverter will show over voltage alarm. then try to reduce PV qty in series.
Now, Best selection as below for series and parallel connection
Example: If, Pump motor voltage is 415VAC, Then try to make Total Vmp value of
connected near to 585 to 600VDC. It should be 1.414 time of Pump motor voltage

Fault: If find E01, E02, E03, E04 and E05 during starting of pump
Remedies: Check following parameters
F002
– 50 second (Up to 90kw inverter)
B021
– 03 overload restriction enable
A044
– 01 Pump control mode
Try to change B049
– 01 VT mode, B022 – max value and B023 – 0.1sec

Fault: If find E14
– Ground fault
Remedies: Check motor wires and its earth cable.
Inverter has two screw terminal One cable for incoming and other for motor earth
cable
If Earthing cable is properly connected then check inverter to pump motor distance,
if it more than 100meter, please try to use output line reactor (output choke) with
minimum 3% impedance.
If there is no any motor cable and only DC power input, then asked to service
person from company.