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Chapter 4 ParametersAT |Troubleshooting}| BLD-E1 Series
5.2 Ground Fault
GFF
Gr ound faul t
5.3 Over Voltage (OV)
Reduc e voltage to
be within s pec .
Maybe br ushless DC
motor dr ive has
malfunction or
misoperation due to
noise. Pl eas e contact
DELTA.
Increase setti ng time
Reduc e moment
of inertia
5-2
Is output cir cuit(c able or
motor) of brushles s DC
motor dr ive gr ounded?
Yes
Remove ground fault
Ov er v oltage
No
Is voltage within
specific ation
Has ov er -v ol tage oc curr ed without load
When O V oc curs, check if the
No
voltage of DC B US is greater
than protection v al ue
Yes
No
Dose O V oc cur when
sudden acc eleration
stops
Yes
Increase
acceler ati on
time
No
No
Reduc e moment of load inertia
Use br ake unit or DC br ak e
Need to check control method. Please c ontact DELTA.
Maybe B rushless D C motor
No
driv e has malfunc tion or
misoperation due to noise.
Please contac t DELTA.
Yes
No
Yes
Increase
Yes
deceleration
time
No
No
Yes
Yes
Need to consi der usi ng
brake unit or
DC brake
No
Revision May 2009, 00DE, V0.50
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