Instruction Manual

4-4 Troubleshooting
PowerFlex 400 Adjustable Frequency AC Drive FRN 1.xx - 7.xx User Manual
Publication 22C-UM001I-EN-P
No. Fault
Type
(1)
Description Action
F15 Load Loss
➀
Output current has dropped
below the level set in A184
[Load Loss Level].
Check for load loss (i.e., a broken belt).
F17 Input Phase
Loss (FRN 6.xx
and later)
➁
Excessive DC bus ripple
voltage detected. See d329
[DC Bus Ripple V].
Check incoming power for a missing
phase or blown fuse. If drive is used
intentionally with single phase input,
apply output derating to 35% actual
drive rating.
F29 Analog Input
Loss
➀
An analog input is configured
to fault on signal loss. A signal
loss has occurred.
Configure with T072
[Analog In
Loss].
1. Check parameters.
2. Check for broken/loose
connections at inputs.
F32 Fan Fdbck Loss
(FRN 6.xx and
later)
➁
A loss of cooling fan feedback
has been detected. (Frames E
and F only)
Make sure cooling fans are clear of
debris and spinning freely. Replace fan
if necessary.
F33 Auto Rstrt Tries
➁
Drive unsuccessfully
attempted to reset a fault and
resume running for the
programmed number of A163
[Auto Rstrt Tries].
Correct the cause of the fault and
manually clear.
F38 Phase U to Gnd
➁
A phase to ground fault has
been detected between the
drive and motor in this phase.
1. Check the wiring between the drive
and motor.
2. Check motor for grounded phase.
3. Replace drive if fault cannot be
cleared.
F39 Phase V to Gnd
F40 Phase W to Gnd
F41 Phase UV Short
➁
Excessive current has been
detected between these two
output terminals.
1. Check the motor and drive output
terminal wiring for a shorted
condition.
2. Replace drive if fault cannot be
cleared.
F42 Phase UW Short
F43 Phase VW Short
F48 Params
Defaulted
The drive was commanded to
write default values to
EEPROM.
1. Clear the fault or cycle power to the
drive.
2. Program the drive parameters as
needed.
F63 SW OverCurrent
➀
Programmed A183 [SW
Current Trip] has been
exceeded.
Check load requirements and A183
[SW Current Trip] setting.
F64 Drive Overload
➁
Drive rating of 110% for 1
minute or 150% for 3 seconds
has been exceeded.
Reduce load or extend Accel Time.
F70 Power Unit
➁
Failure has been detected in
the drive power section.
1. Cycle power.
2. Replace drive if fault cannot be
cleared.
F71 Net Loss The communication network
has faulted.
1. Cycle power.
2. Check communications cabling.
3. Check network adapter setting.
4. Check external network status.
(1)
See page 4-1 for a description of fault types.