
Chapter 8 Troubleshooting 200 Series General Purpose Vector AC Drive
74
Fault
code
Fault categories
Possible reasons of fault
Actions
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
PID parameter setting too bigger
E025 Reserve
E026
Motor drop
protection
Load is too small or detached
Check the connection between motor
bearing and load;
Drop protection point set correctly or
not.
E029
Temperature
sensor
disconnect fault
Poor contact of temperature sensor
Check the temperature sensor wiring
E030
Clear the
hardware latch
timeout
1: Over-voltage
2: Over-current
1. Over-voltage fault treatment
2. Over-current fault treatment
E037
Keyboard STOP
failure
Press the stop key on the keyboard
when the terminal operation
channel or communication
operation channel is running
Check whether it is manually operated
E040
Hardware
current-limiting
timeout
1. Whether the load is too large or
the motor is blocked
2. Small Ac Drive selection
1. Reduce load and check motor and
mechanical condition
2. Select a ac drive with higher power
level
E041
The automatic
reset times
exceed the limit
External failure or Ac Drive failure
Check the fault record for
troubleshooting
8.2 Common Fault and Handling Methods
During using the drive, the following faults may occur, please refer to methods in the simply analyzing the
faults.