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Chapter 4 ParametersAT |Troubleshooting}| BLD-E1 Series
5-2
Revision May 2009, 00DE, V0.50
5.2 Ground Fault
GFF
Gr ound faul t
No
Yes
Is output circuit(cable or
motor) of brushless DC
motor drive grounded?
Remove ground fault
Maybe Brushless DC motor
drive has malfunction or
misoperation due to noise.
Please contact DELTA.
5.3 Over Voltage (OV)
Over voltage
Yes
No
Yes
No
No
No
Is voltage within
specification
Has over-voltage occurred without load
Maybe brushless DC
motor dr ive has
malfunction or
misoperation due to
noise. Please contact
DELTA.
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
Dose OV occur when
sudden acceleration
stops
Increase
deceleration
time
Increase
acceleration
time
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
Reduce moment
of inertia
Reduce voltage to
be within spec.
Increase setting time