IMPULSE•G+Mini Advanced Instruction Manual – March 2014
6-10
Fault Display and Corrective Actions at Auto-Tuning
The following are fault displays and corrective actions at auto-tuning. If any of the following faults
are found, the digital operator displays that fault’s contents; the motor coasts to stop if it is under
operation. Fault contact output or minor fault contact output does not operate.
Fault Display Fault or Indicator Name/Description Corrective Action
Er-01
Fault
Motor Data Fault. Motor data was entered
incorrectly for auto-tuning. Relationship between
motor HP and motor rated current fault. Input
motor rated current and motor no-load current
fault don’t match.
• Check the T1 parameters.
• Check inverter and motor capacity
• Check motor rated current and no-load current.
Er-02
Minor Fault
Alarm. The minor fault is detected during auto-
tuning.
• Check the T1 parameters.
•Check wirings
• Disconnect motor from load.
Er-03
STOP Key
STOP Key Input. The stop key is pressed during
auto-tuning.
Er-04
Resistance
Line to Line Resistance Fault. Auto-tuning is not
completed within the expected time. The auto-
tuning is outside the parameter setting.
• Check the T1 parameters.
• Check motor wiring.
• Disconnect motor from load.
Er-05
No-Load Current
No-load Current Fault. Auto-tuning is not
completed within the expected time. The auto-
tuning is outside the parameter setting.
Er-08
Rated Slip
Rated Slip Fault. Auto-tuning is not completed
within the expected time. The auto-tuning is
outside the parameter setting.
Er-09
Accelerate
Acceleration Fault (rotating auto-tuning only).
The motor did not accelerate at the expected time.
• Increase B05.01 (acceleration time).
• If C07.01 and C07.02 (torque limit value) are
decreased, increase values.
• Disconnect motor from load.
Er-11
Motor Speed
Motor Speed Fault (rotating auto-tuning only).
The motor speed was over 100% at auto-tuning
(vector control without PG only).
• Increase B05.01 (acceleration time).
• Disconnect motor from load.
Er-12
I.det.Circuit
Current Detection Fault. Current exceeded the
motor rated current.
• Release brake.
• Check for open motor lead.
End 1
V/f Oversetting
Excess V/f setting * (rotating auto-tuning only).
The torque reference exceeded 20% and no load
current exceeded 80%.
• Check the T1 parameters.
• Disconnect the motor from the load.
End 2
Saturation
Motor Iron Core Saturation Coefficient Fault
(rotating auto-tuning only). Since the motor iron
core saturation coefficient could not be auto-tuned
within the set time, tentative value is set in the iron
core saturation coefficient.
• Check the T1 parameters.
• Check motor wiring.
• Disconnect the motor from the load
End 3
Rated FLA Alm
Rated Current Set Alarm. Motor current during
tuning was greater than the set value.
• Check E02.01.
• Check T01.04.
NOTE: * Excessive V/f set value, motor iron core saturation coefficient fault, and rated current set alarm are all displayed
after the auto tuning is completed.