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YASKAWA A1000 Series Technical Manual

YASKAWA A1000 Series
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6.7 Auto-Tuning Fault Detection
YASKAWA ELECTRIC SIEP C710616 27C YASKAWA AC Drive A1000 Technical Manual 331
Troubleshooting
6
Digital Operator Display Error Name
Er-21 Z Pulse Correction Error
Cause Possible Solutions
Motor was coasting when Auto-Tuning was
performed.
Make sure the motor has stopped completely. Repeat Auto-Tuning.
Either the motor or the PG encoder on the motor is
not properly wired.
Check the wiring for the motor and the PG encoder. Repeat Auto-Tuning.
The direction for the PG encoder is set incorrectly, or
the number of pulses set for the PG encoder is
wrong.
Check the direction and number of pulses set for the PG encoder. Repeat Auto-Tuning.
PG encoder is damaged. Check the signal output from the PG encoder attached to the motor. Replace the PG if damaged.

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YASKAWA A1000 Series Specifications

General IconGeneral
SeriesA1000
TypeAC Drive
AltitudeUp to 1000m without derating
Output Frequency0-400 Hz
Control MethodV/f Control
Overload Capacity150% for 60 seconds
Communication OptionsModbus, DeviceNet, Profibus, Ethernet/IP
Ambient Temperature-10 to 50°C
Storage Temperature-20 to 60°C
Humidity5% to 95% (non-condensing)
Enclosure RatingIP20
Horsepower0.5 to 1000 HP
Power Range0.4 - 630 kW (varies by voltage and model)
Protection FeaturesOvercurrent, Overvoltage, Undervoltage, Overheat
Cooling MethodFan Cooled
SafetySafe Torque Off (STO)

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