YASKAWA L1000A Quick Start Manual page 47

Digital Operator
Encoder Offset Compensation Error
Motor is coasting when Auto-Tuning is initiated.
Either the motor or the encoder on the motor is not properly
wired.
The direction for the encoder is set incorrectly, or the
(Er-21)
number of pulses set for the encoder is incorrect.
Encoder is damaged.
PG-E3 option detected excess position error with the
ERN1387 encoder.
Initial Rotor Pole Search Error
Initial pole search tuning found that the encoder offset
(Er-22)
cannot be tuned without rotating the motor.
Non-rotating Encoder Offset Tuning Warning
A too large error occurred when the drive attempted to detect
(Er-23)
the rotor position during non-rotating encoder offset tuning.
Excessive V/f Setting
• The torque reference exceeded 20% during Auto-Tuning.
(End1)
• The calculated no-load current is above 80% of the motor
rated current.
Motor Iron-Core Saturation Coefficient
• Calculated core saturation values out of range.
(End2)
• Incorrect data was entered.
Rated Current Setting Alarm
(End3)
Adjusted Slip Calculation Error
(End4)
The slip that was calculated is outside the allowable range.
Resistance Tuning Error
The resistance value that was calculated is outside the
(End5)
allowable range.
Leakage Inductance Alarm
• A1-02 setting error
(End6)
• The leakage inductance value that was calculated is
outside the allowable range.
No-Load Current Alarm
• The entered no-load current value was outside the
allowable range.
(End7)
• Auto-Tuning results were less than 5% of the motor rated
current.
YASKAWA ELECTRIC TOEP C710616 33G AC Drive L1000A - Quick Start Guide
Cause Corrective Action
Make sure the motor has stopped completely. Repeat Auto-
Tuning.
Check the wiring for the motor and the encoder. Repeat Auto-
Tuning.
Check the direction setting by F1-05 and b1-14 and number of
pulses (F1-01) set for the encoder. Repeat Auto-Tuning.
Check the signal output from the encoder attached to the
motor. Replace the encoder if damaged.
If other possible solutions are not successful, perform Auto-
Tuning of PG-E3 encoder characteristics.
• Perform rotating encoder offset tuning.
• If a PG-X3 option card with an incremental encoder is used,
replace the encoder by an absolute encoder.
Perform rotating encoder offset tuning.
• Check the V/f pattern setting.
• Perform Auto-Tuning without the load connected.
• Check the input data and repeat Auto-Tuning.
• Check the input data.
• Check the motor wiring.
• Perform Auto-Tuning without load connected.
Check the input data and repeat tuning.
• Make sure the data entered for Auto-Tuning is correct.
• Execute Rotational Auto-Tuning instead. If not possible, try
Stationary Auto-Tuning 2.
• Double check the data that was entered for the Auto-Tuning
process.
• Check the motor and motor cable connection for faults.
• Check the setting of parameter A1-02.
• Check the control mode and repeat Auto-Tuning.
• Double check the data that was entered for the Auto-Tuning
process.
• Check and correct faulty motor wiring.
• Double check the data that was entered for the Auto-Tuning
process.
8 Troubleshooting
EN 47