Delta VFD-VJ Series - Page 147

Chapter 5 Methods of Anomaly Diagnosis |V FD-VJ-
5-4
No. Display Code
Fault
Description
Troubleshooting
Fault codes
defined by
Delta
(2021H
Low Byte)
CANopen
Fault
Register
(1001H
bit 0~7)
DS402
Fault
Codes
(603FH)
E5
occ

IGBT short
circuit between
upper and lower
bridge. (occ)
Short-circuit is detected between the
upper and lower bridge of the IGBT
module. Check the motor wiring. Cycle
the power, if occ still exists, return to the
factory for repair.
0005H 2 2250H
E6
ocS
Over-current or
hardware failure
in current
detection at
Stop. (ocs)
Send back to manufacturer for repair.
0006H 1 2214H
E7
ovA
DC BUS
over-voltage
during
acceleration.
(ovA)
230V: DC 415V
460V: DC 830V
1. Check if the input voltage is within the
range of voltage rating of Hybrid
Servo Drive and monitor for any
occurrence of surge voltage.
2. The issue can be resolved by
adjusting the software brake action
level in Pr.02-00.
3. When such error occurred at the
beginning, during or at the end of the
pressure/ flow command, adjust
Pr00-29 ~Pr0032 <Ramp up/down
rate of pressure/ flow command> or
Pr00-46 ~Pr00-49 <Pressure/ flow
reference S1/S2 time>
0007H 2 3210H
E8
ovd
DC BUS
over-voltage
during
deceleration.(ov
d)
0008H 2 3210H
E9
ovn
DC BUS
over-voltage at
constant speed.
(ovn)
009H 2 3210H
E10
ovS
Over voltage
occurs at stop
and hardware
failure. (ovS)
Check if the input voltage is within the
range of voltage rating of hybrid servo
drive and monitor for any occurrence of
surge voltage.
000AH 2 3210H
E11
LvA
DC bus voltage
is lower than the
setting at
Pr02-07 during
acceleration.
(LvA)
1. Check if the voltage of input power is
normal.
2. Check if there is any sudden heavy
load.
3. Adjust the low voltage level in
Pr02-07.
000BH 2 3220H