Capítulo 5 Detección Y Solución De Problemas; Exceso De Corriente (Oc) - Delta Electronics VFD-EL Serie Manual Del Usuario

Capítulo 5 Detección y solución de problemas

5.1 Exceso de corriente (OC)

Remove short circuit
or ground fault
Reduce the load or
increase the power
of AC motor drive
No Reduce torque
compensation
Reduce torque
compensation
Maybe AC motor drive
has malfunction or error
due to noise. Please
contact with DELTA.
Increase accel/decel
time
Revisión abril 2008, 1ELE, V1.02
ocA
Over-current
during acceleration
Yes
Yes
No
Suitable torque
compensation
Yes
Check if
No
acceleration time
is too short by
load inertia.
Yes
Can acceleration
time be made longer?
Reduce load or increase
the power of AC motor
drive
ocd
Over-current
during deceleration
Check if there is any
grounding between the U, V, W and motor
No
No
Check if load is too large
No
Yes
Check if
No
deceleration time
is too short by
load inertia.
Yes
Yes
Can deceleration
time be made longer?
No
Check braking
method. Please
contact DELTA
OC
Over current
short circuits and
No
No
No
Yes
Has load changed
No
suddenly?
Yes
No
Reduce load or increase
the power of AC motor
drive
5-1