Hitachi WJ200-001S Instruction Manual page 310

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