Reset - Delta VFD-B User Manual

Chapter 6 Fault Code Information|VFD-B Series
Fault
Fault Descriptions
Name
Ground fault
External Base Block.
(Refer to Pr. 08-06)
Analog feedback error or
ACI open circuit
PG feedback signal error
Auto Tuning Error
EF when preliminary count
value attained
Under Current
Phase Loss

6.2 Reset

There are three methods to reset the AC motor drive after solving the fault:
STOP
1. Press
RESET
2. Set external terminal to "RESET" (set one of Pr.04-04~Pr.04-09 to 05) and then set to be ON.
3. Send "RESET" command by communication.
NOTE
Make sure that RUN command or signal is OFF before executing RESET to prevent damage or
personal injury due to immediate operation.
6-4
key on PU01.
Corrective Actions
When (one of) the output terminal(s) is grounded,
short circuit current is more than 50% of AC motor
drive rated current, the AC motor drive power
module may be damaged.
NOTE: The short circuit protection is provided
for AC motor drive protection, not for
protection of the user.
1. Check whether the IGBT power module is
damaged.
2. Check for possible poor insulation at the
output line.
1. When the external input terminal (B.B) is
active, the AC motor drive output will be
turned off.
2. Deactivate the external input terminal (B.B) to
operate the AC motor drive again.
1. Check parameter settings and wiring of Analog
feedback (Pr.10-00).
2. Check for possible fault between system
response time and the feedback signal
detection time (Pr.10-08).
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.
1. Check cabling between drive and motor
2. Check Pr.07-05
1. Check counter trigger signal
2. Check Pr.03-09, Pr.03-11setting
1. Check Load current
2. Check Pr.06-12 to Pr.06-15 setting
Check input phase wiring for loose contacts.
Revision July 2008, BE16, SW V4.08 & V5.00