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7
Troubleshooting
All the possible faults of SINUS VEGA have been given in Table 7-1.
Fault code range is F.oC1
～
F.tU. You can user can check thefaults
according to the following table and record detailed fault phenomena
before seeking service. Please contact the salesdistributor when you
need technical supports.
Table 7-1 Fault Information and Diagnosis
Fault
code
Display
code
Fault description
Possible reasons
Actions
F.oC1
Over-current in
Acc process
Too short Acc time
Prolong the Acc time
V/F curve is not suitable
Check and adjust V/F
curve, adjust torque
boost or set the motor
parameters correctly to
ensure the normal auto
torque boost works
well.
Low AC supply voltage
Check the inverter’s
input AC supply
Moment of inertia of the load
is too large, heavy impact load
Reduce the load of
mutations,prolong the
Acc time
The rotating motor re-starts
after the inverter stops
instantly
Start when the motor
absolutely stops
Motor parameter setting is not
normal
Properly set motor
parameters
Inverter power is too small
Select a higher power
inverter
F.oC2
Over-current in
Dec process
Too short Dec time
Prolong the Dec time
Load inertia is too high
Connect suitable
braking device
Too low inverter’s power
Select the inverter with
larger capacity
F.oC3
Over-current in
constant speed
operation
Sudden change of load
Reduce the change of
the load
Too short Acc/Dec time
Prolong Acc/Dec time
Abnormal load
Check the load
