Delta Electronics AC Drive VFD-F Series Especificações descarregar pdf (Página 141)

Chapter 7 Troubleshooting |VFD-S Series

7-2 Revision August 2008, SE09, SW V2.61

7.2 Ground Fault

GFF

Ground fault

Yes

Is output circuit(cable or

motor) of AC motor drive

grounded?

Remove ground fault

Maybe AC motor drive has

malfunction or misoperation

due to noise. Please

contact DELTA.

7.3 Over Voltage (OV)

Over voltage

Ye s

Yes

Is voltage within

specification

Reduce voltage to

be within spec.

Has over-voltage occurred without load

Maybe AC motor drive

has malfunction or

misoperation due to

noise. Please contact

with DELTA.

Yes

Ye s

Yes

Ye s

When OV occurs, check if the

voltage of DC BUS is greater

than protection value

Dose OV occur when

sudden acceleration

stops

Increase

deceleration

time

Increase setting time

Increase

acceleration

time

Reduce moment

of inertia

Reduce moment of load inertia

Use brake unit or DC brake

Need to check control method. Please contact DELTA.

Need to consider using

brake unit or DC brake

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