Veichi AC90 Manual page 56

AC90 TENSION CONTROL FREQUENCY INVERTER MANUAL
E.oU3
E.oU4
E.oC1
E.oC2
E.oC3
E.oL1
E.oL2
E. SC
Constant
Power voltage fluctuation
●
speedover-
over limit.
voltage
Over-voltage Power voltage fluctuation
●
while stop over limit.
Acceleration time is too
●
short.
Start running motor.
●
Acc V/F curve setting is not
●
over-current suitable.Or torque boost
too high.
Inverter capacitance is too
●
small.
Deceleration time is too
●
short.
Dec Load potential energy or
●
over-current inertia is too large.
Power voltage fluctuation
●
over limit.
Constant Sudden load change.
●
speedover-cu Power grid voltage is too
●
rrent low.
V/F curve setting is not
●
suitable.Or torque boost
too high.
Power grid voltage is too
●
low.
Motor
Unright overload
●
over-load
protection setting.
Locked-rotor run or too
●
heavy load.
Universal motor long time
●
low speed run.
Load is too heavy.
●
Acceleration time is too
●
short.
Inverter
Start running motor.
●
over-load
V/F curve setting is not
●
suitable.Or torque boost
too high.
Acceleration time is too
●
System
short.
abnormality
Short circuit between
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BASIC OPERATION AND TRIAL RUN
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51
Detect input power voltage and
eliminate fault.
Install input reactor.
Check input power, eliminate
fault.
Seek support from factory.
Prolong acc time.
Restart motor until it totally
stop.Set F1.00 as 1or 2.
Reset V/F curve or torque
boost value.
Select inverter with right
capacitance.
Prolong deceleration time.
Connect external braking
resistance or braking unit.
Select inverter with right
capacitance.
Check load change and
eliminate it.
Check input power, eliminate
fault.
Reset V/F curve or torque
boost value.
Check input power, eliminate
fault.
Unreasonable F5.06 setting.
Adjust load or select inverter
with right capacitance.
If need long low-speed
operation, please choose
special motor for inverter.
Select inverter with right
capacitance.
Prolong acceleration time
Restart motor util it totally stop.
Set F1.00 as 1or2.
Reset V/F curve or torque
boost value.
Prolong acceleration time
properly.
Check periphery equipments