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Yaskawa V1000 AC Drive

Yaskawa V1000 AC Drive Error Codes

Complete alarm and error code reference for the Yaskawa V1000 AC Drive. Browse all 153 documented fault codes below, each linking to a detailed troubleshooting guide.

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Complete Alarm List

Code bUS (Fault)

Option Communication Error

Code CE (Fault)

MEMOBUS/Modbus Communication Error

Current Offset Fault

A/D Conversion Error

EEPROM Data Error

Terminal Board Communications Error

EEPROM Serial Communication Fault

FLASH Memory Fault

Watchdog Circuit Exception

Control Circuit Fault

Control Circuit Fault

Control Circuit Fault

One of the following faults occurred: RAM fault, FLASH memory error, watchdog circuit exception,

One of the following faults occurred: RAM fault, FLASH memory error, watchdog circuit exception,

A/D Conversion Fault

PWM Feedback Fault

Drive Capacity Signal Fault

Terminal Board Not Connected

Code dEv (Fault)

Speed Deviation (for Simple V/f with PG)

DriveWorksEZ Fault

DriveWorksEZ Program Error Output

Code E5 (Fault)

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)

EEPROM Write Error

Code FbH (Fault)

Excessive PID Feedback

Code FbL (Fault)

PID Feedback Loss

Output Phase Loss

Output current imbalance

Node Setup Error

Option Card Connection Error at Option Port CN5

Option Card Fault

Option Card Fault

Option Card Fault

Option Card Fault

Option Card Fault

Option Card Fault

Option Card Fault

Option Card Fault

Option Card Fault

Option Card Fault

Option Card Fault

Option Card Fault

Option Card Fault

Option Card Fault

Option Card Fault

Option Card Fault

Option Card Fault

Overheat 1 (Heatsink Overheat)

Code oH3 (Fault)

Motor Overheat Alarm (PTC Input)

Motor Overheat Fault (PTC Input)

Code oL1 (Fault)

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)

Overspeed (Simple V/f with PG)

Code ov (Fault)

Code PF (Fault)

Input Phase Loss

Code PGo (Fault)

PG Disconnect (for Simple V/f with PG)

Braking Resistor Overheat

Dynamic Braking Transistor

IGBT Short Circuit

o Many Speed Search Restarts

Motor Pull Out or Step Out Detection

Code UL3 (Fault)

Undertorque Detection 1

Code UL4 (Fault)

Undertorque Detection 2

Code UL5 (Fault)

Mechanical Weakening Detection 2

DC Bus Undervoltage

Control Power Supply Voltage Fault

Undervoltage 3 (Inrush Prevention Circuit Fault)

Station Address Setting Error (CC-Link CANopen MECHATROLINK)

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 (for Simple V/f with PG)

Code E5 (Alarm)

MECHATROLINK Watchdog Timer Error

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)

External fault (input terminal S7)

Code FbH (Alarm)

Excessive PID Feedback

Code FbL (Alarm)

PID Feedback Loss

Safe Disable Signal Input

Safe Disable Signal Input

Cooling Fan Maintenance Time

Capacitor Maintenance Time

Soft Charge Bypass Relay Maintenance Time

IGBT Maintenance Time (50%)

Drive Overheat Warning

Code oH3 (Alarm)

Code oL3 (Alarm)

Code oL4 (Alarm)

Code oL5 (Alarm)

Mechanical Weakening Detection 1

Code oS (Alarm)

Overspeed (for Simple V/f with PG)

Code ov (Alarm)

DC Bus Overvoltage

MEMOBUS/Modbus Comm. Test Mode Complete

Code PGo (Alarm)

PG Disconnect (for Simple V/f with PG)

Motor Switch during Run

MEMOBUS/Modbus Communication Test Mode Error

IGBT Maintenance Time (90%)

Code UL3 (Alarm)

Undertorque Detection 1

Code UL4 (Alarm)

Undertorque Detection 2

Code UL5 (Alarm)

Mechanical Weakening Detection 2

Drive Capacity Setting Fault

Parameter Range Setting Error

Multi-Function Input Selection Error

Initialization required.

Run Command/Frequency Reference Source Selection Error

Multi-Function Analog Input Selection Error

Parameter Selection Error

PID Control Selection Fault

V/f Data Setting Error

Carrier Frequency Setting Error

Pulse Monitor Selection Error

Application Setting Error

Excessive V/f Setting. Displayed after Auto-Tuning is complete.

Motor Iron-Core Saturation Coefficient. Detected only during Rotational Auto-Tuning and displayed

Rated Current Setting Alarm (displayed after Auto-Tuning is complete)

Motor Data Error

STOP Button Input

Line-to-Line Resistance Error

No-Load Current Error

Rated Slip Error

Acceleration Error (detected only during Rotational Auto-Tuning)

Motor Speed Fault (detected only when Auto-Tuning is enabled)

Current Detection Error