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Auto-tuning Fault<br />
Auto-tuning faults are shown below. When the following faults are detected, the fault is displayed on the digital<br />
operator and the motor coasts to stop. No fault or alarm outputs will be operated.<br />
Table 6.24 Auto-tuning Fault<br />
Display Meaning Probable causes Corrective Actions<br />
There is an error in the data input for<br />
autotuning.<br />
Check the input data.<br />
Er - 01<br />
Fault<br />
Motor data fault<br />
There is an error in the relationship<br />
between the motor output and the<br />
motor rated current.<br />
There is an error between the no-load<br />
current setting and the input motor<br />
rated current (when auto-tuning for<br />
line-to-line resistance is performed for<br />
vector control)<br />
Check the Inverter and motor<br />
capacity.<br />
Check the motor rated current and<br />
no-load current.<br />
Check the input data.<br />
Er - 02<br />
Minor Fault<br />
Alarm<br />
An alarm is detected during auto-tuning.<br />
Check wiring and the machine.<br />
Check the load.<br />
Er - 03<br />
STOP key<br />
STOP key input<br />
The STOP key was pressed to cancel<br />
autotuning.<br />
-<br />
Er - 04<br />
Resistance<br />
Er - 05<br />
No-Load Current<br />
Er - 08<br />
Rated slip<br />
Line-to-Line Resistance Fault<br />
No-Load Current Fault<br />
Rated Slip Fault<br />
Autotuning was not completed in the<br />
specified time.<br />
The auto-tuning result is outside the<br />
parameter setting range.<br />
• Check the input data.<br />
• Check motor wiring.<br />
• If the motor is connected to the<br />
machine, disconnect it.<br />
• If the setting of T1-03 is higher<br />
than the Inverter input power<br />
supply voltage (E1-01), change<br />
the input data.<br />
Er - 09<br />
Accelerate<br />
Acceleration Fault<br />
Detected only for rotating auto-tuning<br />
The motor did not accelerate in the<br />
specified time<br />
• Increase C1-01 (Acceleration<br />
Time 1).<br />
• Increase L7-01 and L7-02<br />
(Torque Limits) if they are low.<br />
• If the motor is connected to the<br />
machine, disconnect it.<br />
Er - 11<br />
Motor Speed<br />
Motor speed Fault<br />
Detected only for rotating autotuning<br />
The torque reference exceed 100%<br />
during acceleration.<br />
Detected when A1-02 = 2 or 3 (Vector<br />
control).<br />
• If the motor is connected to the<br />
machine, disconnect it.<br />
• Increase C1-01 (Acceleration<br />
Time 1).<br />
• Check the input data (particularly<br />
the number of PG pulses<br />
and the number of motor poles).<br />
Er - 12<br />
I-det. Circuit<br />
Current Detection Fault<br />
The current exceeded the motor rated<br />
current.<br />
Any of U/T1, V/T2 and W/T3 has<br />
open-phase<br />
Check wiring of the Inverter and<br />
the mounting.<br />
6-12
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