Allen-Bradley 1305 Series - Page 132

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
Undervolt
Fault
F4
DC
Bus
voltage
fell
below
the
minimum
value.
[Line
Loss
Fault] parameter is programmed to “U Volt Run”.
Monitor
the
incoming
AC
line
for
low
voltage
or
line
power
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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