dolycon CT100 Series - Page 150

CT100 inverter Faults and solutions
146
Code
Type
Reason
Solution
2. Phase or ground short
circuit of output three
phases
3. The duct is blocked or
the fan is damaged
4. The ambient
temperature is too high
5. The wiring or
connectors of the
control board is loose
6. The auxiliary power
supply is damaged
and the drive voltage is
undervoltage
7. The power module
bridge is conducted
8. The control board is
abnormal
3. Dredge the duct or
replace the fan
4. Reduce the ambient
temperature
5. Check and reconnect
6. Ask for service
7. Ask for service
8. Ask for service
E.oH2
Converter
module
overheating
E.ILF
Input phase loss
Input R, S, T phase loss
1. Check the input power
2. Check the installation
and wiring
E.OLF
Output phase
loss
1. Output U, V, W phase
loss
2. Serious asymmetry of
load three-phase
1. Check the output wiring
2. Check the motor and
cable
E.bC
Braking unit
fault
1. Braking wiring fault or
braking tube damaged
2. The external braking
resistance is too small
1. Check the braking unit
and replace a new
braking tube
2. Increase the braking
resistance
E.AUT
Motor
autotuning fault
1. The motor capacity
does not match with
the inverter capacity
2. Incorrect setting of
motor rating
parameters
3. The deviation between
autotuning parameters
and standard
parameters is too large
4. Autotuning timeout
1. Replace the drive
model
2. Set the rated
parameters according
to the motor name plate
3. Make the motor at no
load and
re-identification
4. Check the motor wiring
and parameters setting