Delta 1.07 VFD-D D User Manual Page 109

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  • TROUBLESHOOTING
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Chapter 5 Troubleshooting |DD Series
5-4
5-3 Over Voltage (ov)
Over voltage
Yes
No
Yes
No
No
No
If voltage is within
specification
Reduce voltage to
be within spec.
If over-voltage is occurred without load
Maybe AC motor drive
has malfunction or
misoperation due to
noise. Please contact
with DELTA.
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
When OV occurs, check if the
voltage of DC BUS is greater
than protection value
If OV occurs when
sudden acceleration
stops
Increase
deceleration
time
Increase setting time
Increase
acceleration
time
Reduce moment
of inertia
Reduce moment of load inertia
Use braking unit or DC braking
Need to check control method. Please contact DELTA.
Need to considerate to
use braking unit and
DC braking
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