VD120 Series Inverter User Manual Fault Shooting and Solutions
-
153
-
Chapter 8 Fault Shooting and Solutions
8.1 Fault Alarm and Countermeasures
VD120 inverter has warning information and fault protection function. In case of abnormal fault, the
inverter error relay contactor will be in action, before user seeking for help, please do self-inspection
according to this chapter to analyze causes and find out solution. If user cannot solve problem by
himself, seeking for help or directly contact your local dealer or our company.
VD120 inverter during running process or powered on, if fault occurred, on the display of panel of
inverter will show error code. At the moment inverter already have protection effectively to the fault,
output terminal stopped output, the display panel has indicating current error with 2~5 code.
Inverter keypad displayer has showing error code when in error, the code content and corrective
action as below table.
Code
Error type
Possible error causes
Solution
Err.01
Acceleration
overcurrent
(hardware)
1. Acceleration time is too
short
2. Motor parameter is not
correct
3. Grid voltage is too low
4. Inverter power is too small
5. V/F curve inappropriate
6. Inverse module short circuit
protection
1. Extend acceleration time
2. Self-tuning to motor parameter
3. Check grid input power
4. Select inverter with bigger
power class
5. Adjust V/F curve setting, adjust
manual torque boost
6. Inverter module or drive circuit
damage
Err.02
Deceleration
overcurrent
(hardware)
1. Deceleration time is too
short
2. load inertia torque is too big
3. Inverter power is too small
4. Inverse module short circuit
protection
1. Extend deceleration time
2. Add external energy
consumption braking unit
3. Select inverter with bigger class
power
4. Inverse module or drive circuit
damage
Err.03
Constant
speed
overcurrent
(hardware)
1. Load with jump or abnormal
2. Grid voltage is too low
3. Inverter power is too small
4. Inverse module short circuit
protection
1. Check load or reduce load
jumping
2. Check grid input power
3. Select inverter with bigger class
power
4. Inverse module or drive circuit
damage
Err.04
Acceleration
overcurrent
(software)
1. Acceleration time is too
short
2. Motor parameter is not
correct
3. Grid voltage is too low
4. Inverter power is too small
5. V/F curve inappropriate
1. Extend acceleration time
2. Self-tuning to motor parameter
3. Check grid input power
4. Select inverter with bigger
power class
5. Adjust V/F curve setting, adjust
manual torque boost
Summary of Contents for VD120 Series
Page 2: ......
