YASKAWA A1000 Technical Manual page 147

Digital Operator Display
Er-16
Cause
The inertia identified by the drive was
abnormally small or abnormally large
during Inertia Tuning.
Digital Operator Display
Er-17
Cause
Drive is prohibited from rotating the motor
in reverse while attempting to perform
Inertia Tuning.
Digital Operator Display
Er-18
Cause
The induced voltage constant attempted to
set a value outside the allowable setting
range.
Digital Operator Display
Er-19
Cause
The induced voltage constant attempted to
set a value to E5-08 or E5-09 outside the
allowable range.
Digital Operator Display
Er-20
Cause
Stator resistance tuning attempted to set a
value to E5-06 that is outside the allowable
setting range.
Digital Operator Display
Er-21
Cause
Motor was coasting when Auto-Tuning
was performed.
Either the motor or the PG encoder on the
motor is not properly wired.
The direction for the PG encoder is set
incorrectly, or the number of pulses set for
the PG encoder is wrong.
PG encoder is damaged.
YASKAWA ELECTRIC TOEP C710616 41B YASKAWA AC Drive - A1000 Quick Start Guide
Inertia Detection Error
• Reduce the test signal amplitude in T3-01 and repeat the tuning. If necessary, reduce the test signal
frequency (T3-02) and repeat the tuning.
• Check the basic motor inertia value entered to T3-03.
Reverse Prohibited Error
• Inertia Auto-Tuning cannot be performed if the drive is restricted from rotating in reverse.
• Assuming it is acceptable for the application to rotate in reverse, set b1-04 to 0 and then execute Inertia
Tuning.
Induction Voltage Error
Double-check the data entered to the T2-oo parameters, and perform Auto-Tuning again.
PM Inductance Error
Double-check the data entered to the T2-oo parameters, and perform Auto-Tuning again.
Stator Resistance Error
Double-check the data entered to the T2-oo parameters, and perform Auto-Tuning again.
Z Pulse Correction Error
Make sure the motor has stopped completely. Repeat Auto-Tuning.
Check the wiring for the motor and the PG encoder. Repeat Auto-Tuning.
Check the direction and number of pulses set for the PG encoder. Repeat Auto-Tuning.
Check the signal output from the PG encoder attached to the motor. Replace the PG if damaged.
5.5 Auto-Tuning Fault Detection
Error Name
Possible Solutions
Error Name
Possible Solutions
Error Name
Possible Solutions
Error Name
Possible Solutions
Error Name
Possible Solutions
Error Name
Possible Solutions
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