YASKAWA L1000A Technical Manual page 279

Digital Operator Display
Er-21
Cause
Motor was coasting when Auto-Tuning was
performed.
Either the motor or the encoder on the motor is not
properly wired.
The direction for the encoder is set incorrectly, or the
number of pulses set for the encoder is wrong.
Encoder is damaged.
Digital Operator Display
Er-22
Cause
Parameters set by Initial Rotor Pole Search Tuning
were outside the acceptable range.
During normal operation, pole diversion exceeded
20 degrees.
Digital Operator Display
Er-23
Cause
Pole diversion exceeded 15 degrees three times.
Parameters set by Encoder Offset Tuning were
outside the acceptable range.
YASKAWA ELECTRIC SIEP C710616 38A YASKAWA AC Drive L1000A Technical Manual
Z Pulse Correction Error
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 and number of pulses set for the encoder. Repeat Auto-Tuning.
Check the signal output from the encoder attached to the motor. Replace the encoder if damaged.
Initial Rotor Pole Search Error
Switch to an absolute encoder and to the PG-F3 option card.
Non-rotating Encoder Offset Tuning Warning
Remove the ropes and conduct Rotational Auto-Tuning for Encoder Offset (T2-01 = 3).
6.6 Auto-Tuning Fault Detection
Error Name
Possible Solutions
Error Name
Possible Solutions
Error Name
Possible Solutions
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