Specifications

Chapter8TroubleshootingVFD‐G7SeriesFrequencyInverterOperationManual

170
Fault
code
Fault
categories
Possible reasons of fault Actions
Auto-learned and standard
parameters have large
deviations
Let the motor no load, re-identify
Overtime of auto-learning
Check the motor’s wiring,
parameters’ settings
E021
EEPROM R/W
fault
R/W fault of control
parameters
Press STOP/RST to reset
Seek service
EEPROM damaged Seek service
E022
PID feedback
disconnected
fault
PID feedback
disconnected
Check PID feedback signal line
the source of PID
feedback disappears
Check the PID feedback source
E023
Braking kit
fault
Brake line fails or brake
pipe is damaged
Check the brake kit, update brake
pipe
The external braking
resistance is small
Increase braking resistor
E024
PID feedback
bigger fault
PID feedback bigger
Check PID feedback signal wire,
if the PI parameter setting too
bigger
E025 Reserve
8.2 Common fault and handling methods
Duringusingthedrive,thefollowingfaultsmayoccur,pleaserefertomethodsintheTable
8‐2tosimplyanalyzingthefaults.
Table8‐2Commonfaultandhandlingmethods
Phenomena Possible reasons of fault Actions
The drive
doesn’t display
after power-on
Drive's input supply is inconsistent
with the rated voltage
Check with a
multi-meter and
troubleshoot the issue.
3-phase rectifier bridge blasted Seek service