Hitachi WJ200-001L, Instruction Manual, Page: 310 / 680

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7. Parameter data does not change.
Possible Cause(s) Corrective Action
Inverter is in RUN status. Stop the inverter, make sure the motor stops and try again.
If "RUN mode edit" is enabled, a part of function codes can
be changed in RUN status.
Software lock function (b031) is enabled. Disable software lock function.
8. Motor rotates reverse direction with forward command.
Possible Cause(s) Corrective Action
Incorrect power wiring. Exchange any two of U/T1, V/T2 or W/T3.
Incorrect logic of direction signal in
3-wire operation. Check the logic of input set as "22:F/R".
9. Motor rotates reverse direction with RUN key of keypad.
Possible Cause(s) Corrective Action
Keypad RUN key routing (F004) is
incorrectly set. Check F004.
10. .Overcurrent trip (E03)
Possible Cause(s) Corrective Action
Acceleration time is short. Change acceleration time (F002/A092/A292).
Enable "acceleration hold" function (A069,A070)
Excess load. Remove excess load.
Enable torque boost function.
Set free V/f in V/F characteristic curve selection
(A044/A244=02)
Overload restriction (b021) is disabled
(00). Enable overload restriction (b021=01/02/03).
When the inverter trips due to Overcurrent(E03), despite overload restriction is enabled(b021=01/02/03).
Overload restriction level (b022/b025) is
high. Set overload restriction level (b022/b025) lower.
Deceleration rate at overload restriction
(b023/b026) is too short. Set deceleration rate at overload restriction (b023/b026)
longer.
11. STOP/RESET key does not respond.
Possible Cause(s) Corrective Action
STOP/RESET key disabled. Check "STOP key enable" function. (b087)
Deceleration overvoltage suppression
(b130) or controlled deceleration on
power loss (b050) function is enabled. Check b130 and b050.