Delta BLD-E1 brushless DC motor drive BLD-E1 Series - Manual (Page 148)

Revision May 2009, 06EE, V0.50 5-1
Chapter 5 Troubleshooting
5.1 Over Current (OC)
oc
Ov er-c urrent
during constant speed
Check if there is any
between the U, V, W and motor
short circ ui ts and
grounding
Yes
No
No
Yes
Yes
Remove s hort circuit
or ground fault
Reduc e the load or
increas e the power
of brus hless DC
motor drive
No Reduc e torque
compensation
Reduc e torque
compensation
Maybe brushless DC motor
driv e has malfunc ti on or error
due to nois e. Please
contact DELTA.
Yes
Reduc e load or inc rease
the power of brushless
DC motor drive
Check if load is too large
No Has load changed
suddenly?
Reduc e load or inc rease
the power of AC motor
driv e