X5 AC Drive User’s Manual
Chapter 8: Troubleshooting
DPD00089A
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129 -
© 2009 Vacon Incorporated All Rights Reserved
31
Pwr Wiring
Power wiring error
0
This fault flags a problem with the
drive wiring.
Check that input power wiring is
not connected to load power
terminals. Consult factory.
1
This fault can occur if an IOC fault
is detected during the power
wiring test.
32
Low Voltage
(Undervoltage)
Low voltage trip
0
This fault occurs if a power dip is
detected when the drive is
operating, and the drive is not
able to ride through the power dip
before shutting off outputs.
Verify that input line power is
within the drive’s specifications.
Add a transformer or reduce
demands to power feed.
Consult factory.
1
This fault occurs when an
undervoltage condition (power-
down) is detected,
and
501
is set for Vector or
Linear Auto mode, with “Coast
Stop” assigned as the parameter
value. In undervoltage conditions,
the drive coasts to a stop, and
generates an undervoltage fault.
2
This fault occurs when an
undervoltage condition (power-
down) is detected,
and
501
is set for Vector or
Linear Auto mode, with
“Controlled” assigned as the
parameter value. In undervoltage
conditions, the drive decelerates
the motor. If power is restored,
the drive accelerates to the
command frequency without
faulting; if the drive stops, it
generates an undervoltage fault.
33
1Ph Overload
1Ph overload
0
If the user configures parameter
for single-
phase operation, this fault occurs
if the bus voltage ripple is outside
the limit of the drive.
Check that input power demand
does not exceed the drive’s
capacity for single-phase
operation. Consult factory.
34
RS Meas. Fail
Stator resistance
measurement failed
0
If the drive cannot measure the
stator resistance properly, this
fault occurs.
Try the routine again and if the
fault occurs twice, consult the
factory.
35
User Flt 1
User-defined fault
#1
0
User-defined
Consult factory if assistance is
needed.
36
User Flt 2
User-defined fault
#2
0
User-defined
Consult factory if assistance is
needed.
37
Encoder Flt
Fault in encoder
0
Encoder overspeed fault.
Check parameters for proper
configuration.
1
The encoder has improper setup.
Try setting up the encoder again;
consult factory for assistance if
needed.
2 or 3
The encoder is not functioning
properly.
Consult factory.
Table 8-1: X5 Fault Codes
(Page 5 of 6)
Code
Fault Display
Description
Adv. Fault
Code
Explanation
Suggestions for Recovery
Note:
Shaded faults are auto-resettable, except where noted.