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Yaskawa A1000 AC Drive

Yaskawa A1000 AC Drive Error Codes

Complete alarm and error code reference for the Yaskawa A1000 AC Drive. Browse all 280 documented fault codes below, each linking to a detailed troubleshooting guide.

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Complete Alarm List (Page 1 of 2)

Code boL (Fault)

Braking Transistor Overload Fault

Code bUS (Fault)

Option Communication Error

Code CE (Fault)

MEMOBUS/Modbus Communication Error

Current Offset Fault

Control Circuit Error

Control Circuit Error

A/D Conversion Error

Control Board Connection Error

EEPROM Memory Data Error

Terminal Board Connection Error

Terminal Board Connection Error

FLASH Memory Fault

Watchdog Circuit Exception

Control Circuit Fault

Control Circuit Fault

Control Circuit Fault

Control Circuit Error

Control Circuit Error

Hybrid IC Error

Control Board Connection Error

Drive Unit Signal Fault

Terminal Board not Connected

Control Circuit Error

Control Circuit Error

Control Circuit Error

Control Circuit Error

Control Circuit Error

Control Circuit Error

Code dEv (Fault)

Speed Deviation (for Control Mode with PG and AOLV/PM without PG)

Z Pulse Noise Fault Detection

Inversion Detection

Inversion Prevention Detection

Polarity Judge Timeout

DriveWorksEZ Fault

DriveWorksEZ Fault

EEPROM Memory DriveWorksEZ Data Error

MECHATROLINK Watchdog Timer Error

Code EF0 (Fault)

Option Card External Fault

Code EF1 (Fault)

External Fault (input terminal S1)

Code EF2 (Fault)

External Fault (input terminal S2)

Code EF3 (Fault)

External Fault (input terminal S3)

Code EF4 (Fault)

External Fault (input terminal S4)

Code EF5 (Fault)

External Fault (input terminal S5)

Code EF6 (Fault)

External Fault (input terminal S6)

Code EF7 (Fault)

External Fault (input terminal S7)

Code EF8 (Fault)

External Fault (input terminal S8)

EEPROM Write Error

Code FAn (Fault)

Internal Fan Fault

Code FbH (Fault)

Excessive PID Feedback

Code FbL (Fault)

PID Feedback Loss

Output Phase Loss

Output Current Imbalance

Power Unit Output Phase Loss 3

Node Setup Error

Option Card Connection Error at Option Port CN5-A

Option Card Fault at Option Port CN5-A

Option Card Error Occurred at Option Port CN5-A

Option Card Error Occurred at Option Port CN5-A

Option Card Error Occurred at Option Port CN5-A

Option Card Error Occurred at Option Port CN5-A

Option Card Error Occurred at Option Port CN5-A

Option Card Error Occurred at Option Port CN5-A

Option Card Connection Error (CN5-A)

Option Card Connection Error (CN5-A)

Option Card Connection Error (CN5-A)

Option Card Connection Error (CN5-A)

Option Card Connection Error (CN5-A)

Option Card Connection Error (CN5-A)

Comm. Option Card Connection Error (CN5-A)

Comm. Option Card Connection Error (CN5-A)

Comm. Option Card Connection Error (CN5-A)

Comm. Option Card Connection Error (CN5-A)

Comm. Option Card Connection Error (CN5-A)

Comm. Option Card Connection Error (CN5-A)

Comm. Option Card Connection Error (CN5-A)

Comm. Option Card Connection Error (CN5-A)

Comm. Option Card Connection Error (CN5-A)

Comm. Option Card Connection Error (CN5-A)

Comm. Option Card Connection Error (CN5-A)

Comm. Option Card Connection Error (CN5-A)

Comm. Option Card Connection Error (CN5-A)

Comm. Option Card Connection Error (CN5-A)

Option Card Fault at Option Port CN5-B

Option Card Fault at Option Port CN5-B

Option Card Fault at Option Port CN5-B

Option Card Error Occurred at Option Port CN5-B

Option Card Error Occurred at Option Port CN5-B

Option Card Error Occurred at Option Port CN5-B

Option Card Error Occurred at Option Port CN5-B

Option Card Error Occurred at Option Port CN5-B

Option Card Error Occurred at Option Port CN5-B

Option Card Error Occurred at Option Port CN5-B

Option Card Error Occurred at Option Port CN5-B

Option Card Error Occurred at Option Port CN5-B

Option Card Error Occurred at Option Port CN5-B

Option Card Error Occurred at Option Port CN5-B

Option Card Error Occurred at Option Port CN5-B

Option Card Error Occurred at Option Port CN5-B

Option Card Error Occurred at Option Port CN5-B

Option Card Error Occurred at Option Port CN5-B

Option Card Connection Error at Option Port CN5-C

Option Card Fault at Option Port CN5-C

Option Card Fault at Option Port CN5-C

Option Card Error Occurred at Option Port CN5-C

Option Card Error Occurred at Option Port CN5-C

Option Card Error Occurred at Option Port CN5-C

Option Card Error Occurred at Option Port CN5-C

Option Card Error Occurred at Option Port CN5-C

Option Card Error Occurred at Option Port CN5-C

Option Card Error Occurred at Option Port CN5-C

Option Card Error Occurred at Option Port CN5-C

Option Card Error Occurred at Option Port CN5-C

Option Card Error Occurred at Option Port CN5-C

Option Card Error Occurred at Option Port CN5-C

Option Card Error Occurred at Option Port CN5-C

Option Card Error Occurred at Option Port CN5-C

Option Card Error Occurred at Option Port CN5-C

Option Card Error Occurred at Option Port CN5-C

Option card error occurred at option port CN5-C

Option card error occurred at option port CN5-C

Option card error occurred at option port CN5-C

Option card error occurred at option port CN5-C

Option card error occurred at option port CN5-C

Option card error occurred at option port CN5-C

Overheat 1 (Heatsink Overheat)

Code oH3 (Fault)

Motor Overheat Alarm (PTC Input)

Motor Overheat Fault (PTC Input)

Code oH5 (Fault)

Motor Overheat (NTC Input)

Code oL3 (Fault)

Overtorque Detection 1

Code oL4 (Fault)

Overtorque Detection 2

Code oL5 (Fault)

Mechanical Weakening Detection 1

High Slip Braking oL

Code oPr (Fault)

External Digital Operator Connection Fault

Code oS (Fault)

Code ov (Fault)

Input Phase Loss

Code PGo (Fault)

PG Disconnect (for any control modes using a PG option card)

Code PGoH (Fault)

PG Hardware Fault (detected when using a PG-X3 option card)

Braking Resistor Fault

Braking Resistor Overheat

Dynamic Braking Transistor

Output Short-Circuit or IGBT Fault

o Many Speed Search Restarts

Motor Pull Out or Step Out Detection

Zero Servo Fault

Code THo (Fault)

Thermistor Disconnect

Code UL3 (Fault)

Undertorque Detection 1

Code UL4 (Fault)

Undertorque Detection 2

Mechanical Weakening Detection 2

Current Unbalance

DC Bus Undervoltage

Control Power Supply Voltage Fault

Undervoltage 3 (Soft-Charge Bypass Circuit Fault)

Gate Drive Board Undervoltage

Code voF (Fault)

Output Voltage Detection Fault

Station Address Setting Error (CC-Link CANopen MECHATROLINK)

Code boL (Alarm)

Braking Transistor Overload Fault

Code bUS (Alarm)

Option Communication Error

Serial Communication Transmission Error

Code CE (Alarm)

MEMOBUS/Modbus Communication Error

MECHATROLINK Comm. Cycle Setting Error

Code dEv (Alarm)

Speed Deviation (when using a PG option card and AOLV/PM without PG)

Forward/Reverse Run Command Input Error

Code EF0 (Alarm)

Option Card External Fault

Code EF1 (Alarm)

External fault (input terminal S1)

Code EF2 (Alarm)

External fault (input terminal S2)

Code EF3 (Alarm)

External fault (input terminal S3)

Code EF4 (Alarm)

External fault (input terminal S4)

Code EF5 (Alarm)

External fault (input terminal S5)

Code EF6 (Alarm)

External fault (input terminal S6)

Code EF7 (Alarm)

External fault (input terminal S7)

Code EF8 (Alarm)

External fault (input terminal S8)

Code FAn (Alarm)

Internal Fan Fault

Code FbH (Alarm)

Excessive PID Feedback

Code FbL (Alarm)

PID Feedback Loss

Safe Disable Signal Input

Safe Disable Signal Input

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