
Troubleshooting and Fault Information
6-8
Table 6.B 1305 Fault Descriptions (continued)
Fault Name & Number Fault Description Action to Take
Undervolt Fault
DC Bus voltage fell below the minimum value. [Line Loss
Monitor the incoming AC line for low voltage or line power
Und
vol
F
ul
F4
DC Bus volt
g
f
ll b
lo
th
n
u
v
lu
Lin
Loss
Fault] parameter is programmed to “U Volt Run”.
on
to
th
nco
ng AC l
n
fo
lo
volt
g
o
l
n
po
interruption.
UV Short Fault
F41
Excessive current has been detected between these two drive
output terminals.
Check the motor and external wiring to the drive output terminals
for a shorted condition.
UW Short Fault
F42
Excessive current has been detected between these two drive
output terminals.
Check the motor and external wiring to the drive output terminals
for a shorted condition.
VW Short Fault
F43
Excessive current has been detected between these two drive
output terminals.
Check the motor and external wiring to the drive output terminals
for a shorted condition.
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