1-4 Troubleshooting and Error Codes
OverVoltage 5 DC bus voltage exceeded maximum
value.
Monitor the AC line for high line
voltage or transient conditions.
Bus overvoltage can also be
caused by motor regeneration.
Extend the decel time or install
and external dynamic brake
option.
Input Phase 17 One input line phase missing. Check user-supplied fuses
Check AC input line voltage.
OutPhasMissng 21 Zero current in one output motor
phase.
Check motor wiring.
Check motor for open phase.
Ground Fault 13 A current path to earth ground greater
than 25% of drive rating. Ground fault
level is 50% of the drive's heavy duty
current rating. The current must
appear for 800ms before the drive will
fault.
Check the motor and external
wiring to the drive output
terminals for a grounded
condition.
InverterFault 14 Hardware problem in the power
structure.
Cycle power.
Replace drive.
System Fault 10 Hardware problem exists in the power
structure.
Cycle power.
Replace drive.
Load Loss 15 Do not use this fault in 700H
applications
Check that parameter 238
[Fault Config 1] / bit 0 [Power
Loss] and parameter 259
[Alarm Config 1] / bit 13 [Load
Loss] are set to zero.
HiHp Drv OvrLoad 31 Drive Overload - the circuit board on
the Power module has detected an
overload.
Measure output current of the
drive. If the level is ever greater
than the maximum drive rated
output current level reduce the
load. If the levels are always
well below the drive rated
levels, then replace the power
module.
Power Unit 70 One or more of the output transistors
were operating in the active region
instead of desaturation. This can be
caused by excessive transistor current
or insufficient base drive voltage.
Clear fault.
Name No. Description Action (if appropriate)
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