Delta VFD-BW Series, User Manual

Page: 187 / 251

Chapter 6 Fault Code Information
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VFD-BW Series
6-4 Revision May 2009, BWE0, SW V1.05
Fault
Name
Fault Descriptions Corrective Actions
Auto accel/decel failure
1. Check if the motor is suitable for operation by
AC motor drive.
2. Check if the regenerative energy is too large.
3. Load may have changed suddenly.
Communication Error
1. Check the RS485 connection between the AC
motor drive and RS485 master for loose wires
and wiring to correct pins.
2. Check if the communication protocol, address,
transmission speed, etc. are properly set.
3. Use the correct checksum calculation.
4. Please refer to parameter group 09 in the
chapter 5 for detail information.
Software protection failure Return to the factory.
Password is locked.
Keypad will be locked. Turn the power ON after
power OFF to re-enter the correct password. See
Pr.00-07 and 00-08.
Analog feedback error or
ACI open circuit
1. Check parameter setting (Pr.10-00) and
AVI/ACI wiring.
2. Check for possible fault between system
response time and the feedback signal
detection time (Pr.10-08).
PG feedback signal error
1. Check parameter settings and signal type of
PG feedback (Pr.10-10 and Pr.10-11).
2. Check if the wiring of PG card is correct.
Phase Loss Check input phase wiring for loose contacts.
EF when preliminary count
value attained 1. Check counter trigger signal.
2. Check Pr.03-09, Pr.03-11setting.
Auto Tuning Error
1. Check cabling between drive and motor.
2. Check
Pr.07-05.
Low Current
1. Check Load current.
2. Check Pr.06-12 to Pr.06-13 setting.
Fan Power Fault
(125~250HP)
Return to the factory.
Fan 1 fault (125~250HP)
Remove any foreign objects on the heatsinks and
check for possible dirty heat sink fins.
Fan 2 fault (125~250HP)
Remove any foreign objects on the heatsinks and
check for possible dirty heat sink fins.
Fan 3 fault (125~250HP)
Remove any foreign objects on the heatsinks and
check for possible dirty heat sink fins.
Fan 1, 2, 3 fault
(125~250HP) Remove any foreign objects on the heatsinks and
check for possible dirty heat sink fins.
Fan 1, 2 fault (125~250HP)
Remove any foreign objects on the heatsinks and
check for possible dirty heat sink fins.
Fan 1, 3 fault (125~250HP)
Remove any foreign objects on the heatsinks and
check for possible dirty heat sink fins.
Fan 2, 3 fault (125~250HP)
Remove any foreign objects on the heatsinks and
check for possible dirty heat sink fins.
Gate Drive Low Voltage
Protect (125~250HP)
Return to the factory.