10 Troubleshooting
10 - 18
High-function General-purpose Inverter 3G3RX-V1 User’s Manual (I578-E1)
An Overvoltage protection
alarm (E03) occurs while
the inverter operates.
The acceleration time is set
too short.
Increase the value set in the 1st/2nd/3rd
Acceleration Time 1/2
(F002/F202/F302/A092/A292/A392).
7-15
Use the Acceleration Stop Frequency (A069) to
enable the inverter to stop accelerating temporarily.
The load is too heavy. Reduce the load. –
Use the torque boost function to adjust the torque. 5-65
Set the 1st/2nd Control Method (A044/A244) to 02
(Free V/f setting) to adjust the torque.
7-34
The Overload Limit Selection
(b021)/Overload Limit
Selection 2 (b024) is set to 00
(Disabled).
Set the Overload Limit Selection (b021)/Overload
Limit Selection 2 (b024) to 01 to 03 to enable the
overload limit function.
7-72
If an overcurrent trip occurs during operation when the overload limit function is enabled, refer
to the following information.
The Overload Limit Level
(b022)/Overload Limit Level 2
(b025) is too high.
Decrease the Overload Limit Level (b022)/Overload
Limit Level 2 (b025).
7-72
The Overload Limit Parameter
(b023)/Overload Limit
Parameter 2 (b026) value is
too small.
Increase the Overload Limit Parameter
(b023)/Overload Limit Parameter 2 (b026) value.
The STOP/RESET key
does not function.
The STOP/RESET key is
disabled.
Set the STOP Key Selection (b087) correctly. 7-97
The Overvoltage Suppression
Function Selection During
Deceleration (b130) is set to
01 or 02 to enable the
overvoltage suppression
function.
Set the Overvoltage Suppression Function
Selection During Deceleration (b130) to 00
(Disabled), or adjust the level and other settings of
the function.
5-68
The Deceleration Stop
Selection on Power
Interruption (b050) is set to
01, 02, or 03 to enable the
deceleration stop on power
interruption function.
Set the Deceleration Stop Selection on Power
Interruption (b050) to 00 (Disabled), or adjust the
level and other settings of the function.
7-88
The motor or machine
causes a loud noise.
The carrier frequency is too
low.
Increase the Carrier Frequency (b083) value.
However, this may increase noise or leakage
current from the inverter. In addition, the output
current must be derated depending on the mode.
For details, refer to Derating of Rated Output
Current on page 2-6
7-94
The frequency of the motor in
rotation resonates with the
machine’s natural frequency.
Change the frequency setting. If resonance occurs
during acceleration/deceleration, use the Jump
Frequency settings (A063 to A068) to avoid the
resonance frequency.
7-44
The motor is overexcited. Set the 1st/2nd/3rd Base Frequency
(A003/A203/A303) and the Motor Rated Voltage
Selection (A082) according to the motor ratings. If
this does not improve the condition, decrease the
Output Voltage Gain (A045) slightly. Or set the
1st/2nd Control Method (A044/A244) to 02 (Free V/f
setting) to adjust the torque.
7-19
7-34
An Overload protection
alarm occurs.
The electronic thermal level is
inappropriate.
Set the 1st Electronic Thermal Level (b012)/1st
Electronic Thermal Characteristics Selection (b013)
to a correct value.
7-66
Symptom Possible cause Remedy
Reference
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