7
VFD-F Series
DELTA ELECTRONICS, INC. ALL RIGHTS RESERVED
7-5
Fault
Name
Fault Descriptions
Corrective Actions
Ground fault:
The AC drive output is
abnormal. When the
output terminal is
grounded (short circuit
current is 50% more
than the AC drive rated
current), the AC drive
power module may be
damaged. The short
circuit protection is
provided for AC drive
protection, not user
protection.
Ground fault:
1. Check whether the IGBT power module
is damaged.
2. Check for possible poor insulation at the
output line.
External Base Block.
AC drive output is turned
off.
1. When the external input terminal (B.B) is
active, the AC drive output will be turned
off.
2. Disable this connection and the AC drive
will begin to work again.
PID Feedback Signal
Error
1. Check parameter settings (Pr.10-00)
and AVI/ACI1/ACI2 wiring.
2. Check for possible fault between system
reaction time and the feedback signal
detection time (Pr.10-08/Pr.10-09).
Fan Power Fault
(150~300HP)
Return to the factory.
Fan 1 fault (150~300HP)
Remove any foreign objects on the
heatsinks and check for possible dirty heat
sink fins.
Fan 2 fault (150~300HP)
Remove any foreign objects on the
heatsinks and check for possible dirty heat
sink fins.
Fan 3 fault (150~300HP)
Remove any foreign objects on the
heatsinks and check for possible dirty heat
sink fins.
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