Yaskawa V1000 Fault index
Types of Alarms, Faults, and Errors in the Yaskawa V1000 VFD
Check the LED operator for information on possible faults if the drive or motor does not operate.
Types of Alarms, Faults, and Errors
Faults
When the drive detects a fault:
• The digital operator displays text indicating the specific fault, and the ALM indicator LED remains lit until the fault is reset.
• The fault cuts off the drive output, and the motor coasts to a stop.
• Depending on the setting, the drive and motor may stop by methods other than those listed.
• A digital output programmed for fault output (H2-oo = E) turns off when a fault occurs.
The drive does not operate until the fault is reset. Refer to the Fault Reset Methods section on page 266.
Minor Faults and Alarms
When the drive detects an alarm or a minor fault:
• The digital operator displays text indicating the specific alarm or minor fault, and the ALM indicator LED flashes.
• The motor does not stop.
• A multi-function contact output turns off if set to be triggered by a minor fault (H2-oo = 10), but not by an alarm.
• The digital operator displays text indicating the specific alarm, and the ALM indicator LED flashes.
Reset an alarm or minor fault automatically by eliminating the cause.
Operational Errors
An operational error occurs when parameter settings conflict with each other or with hardware settings (such as with an option card).
When the drive detects an operational error:
• The digital operator displays text indicating the specific error.
• Multi-function contact outputs do not operate.
The drive does not operate the motor until the error is reset. Reset the error by correcting the settings that caused the operational error.
Setting Errors
Setting errors occur during Auto-Tuning.
When the drive detects a setting error:
• The digital operator displays text indicating the specific error.
• Multi-function contact outputs do not operate.
• The motor coasts to a stop.
• Eliminate the cause of the error and repeat the Auto-Tuning process.
Alarm and Error Indicators
Faults
When the drive detects a fault, the ALM indicator LEDs light up without flashing. If the LEDs are flashing, the drive has detected a minor fault or an alarm. It is important to note whether the LEDs remain lit or are flashing, as conditions such as overvoltage or external faults can trigger both faults and minor faults.
>> bUS: Option Communication Error (read more >> )
>> CE: MEMOBUS/Modbus Communication Error (read more >> )
>> CF: Control Error (read more >> )
>> CoF: Current Offset Error (read more >> )
>> CPF02: A/D Conversion Error (read more >> )
>> CPF03: PWM Data Error (read more >> )
>> CPF06: Drive feature mismatch when replacing Terminal Card or Control Card (read more >> )
>> CPF07: Terminal Card Communication Error (read more >> )
>> CPF08: EEPROM Serial Communication Error (read more >> )
>> CPF11: RAM Error (read more >> )
>> CPF12: FLASH Memory Error (read more >> )
>> CPF13: Watchdog Circuit Exception (read more >> )
>> CPF14: Control Circuit Error (read more >> )
>> CPF16: Clock Error (read more >> )
>> CPF17: Timing Error (read more >> )
>> CPF18: Control Circuit Error (read more >> )
>> CPF19: Control Circuit Error (read more >> )
>> CPF20: RAM Error (read more >> )
>> CPF21: FLASH Memory Error (read more >> )
>> CPF22: A/D Conversion Error (read more >> )
>> CPF23: PWM Feedback Data Error (read more >> )
>> CPF24: Drive Capacity Signal Error (read more >> )
>> dEv: Over Speed Deviation (with Simple V/f and PG) (read more >> )
>> dWAL: DriveWorksEZ Program Fault Output (read more >> )
>> dWFL: DriveWorksEZ Error (read more >> )
>> EF0 - EF7: External Error (input terminal S1 to S7) (read more >> )
>> FbH: Over PID Feedback (read more >> )
>> FbL: PID Feedback Loss (read more >> )
>> GF: Ground Fault (read more >> )
>> LF: Output Phase Loss (read more >> )
>> LF2: Current Imbalance (read more >> )
>> oC: Over Current (read more >> )
>> oFA00 - oFA43: Option Card Error (Port A) (read more >> )
>> oH: Heatsink Overheating (read more >> )
>> oH1: Heatsink Overheating (read more >> )
>> oH3: Motor Overheating 1 (PTC input) (read more >> )
>> oH4: Motor Overheating 2 (PTC input) (read more >> )
>> oL1: Motor Overload (read more >> )
>> oL2: Drive Overload (read more >> )
>> oL3: Over Torque Detection 1 (read more >> )
>> oL4: Over Torque Detection 2 (read more >> )
>> oL5: Mechanical Weakness Detection 1 (read more >> )
>> oL7: High Slip Braking oL (read more >> )
>> oPr: Operator Connection Error (read more >> )
>> oS: Over Speed (with Simple V/f and PG) (read more >> )
>> ov: Over Voltage (read more >> )
>> PF: Input Phase Loss (read more >> )
>> PGo: PG Disconnection (with Simple V/f and PG) (read more >> )
>> rH: Dynamic Brake Resistor (read more >> )
>> rr: Dynamic Brake Transistor (read more >> )
>> SEr: Too Many Speed Search Restarts (read more >> )
>> STO: Stall Detection (read more >> )
>> UL3: Low Torque Detection 1 (read more >> )
>> UL4: Low Torque Detection 2 (read more >> )
>> UL5: Mechanical Weakness Detection 2 (read more >> )
>> Uv1: Low Voltage (read more >> )
>> Uv2: Control Power Supply Low Voltage (read more >> )
>> Uv3: Soft Charge Circuit Error (read more >> )
>> PE01: Drive Unit Setting Error
>> oPE02: Parameter Setting Range Error
>> oPE03: Multi-Function Input Setting Error
>> oPE04: Terminal Card Mismatch Error
>> oPE05: Operation Command Selection Error
>> oPE07: Multi-Function Analog Input Selection Error
>> oPE08: Parameter Selection Error
>> oPE09: PID Control Selection Error
>> oPE10: V/f Data Setting Error
>> oPE11: Carrier Frequency Setting Error
>> oPE13: Pulse Train Monitor Selection Error
Auto-Tuning Errors:
>> End1: Over V/f Setting
>> End2: Motor Iron Core Saturation Coefficient Error
>> End3: Rated Current Setting Alarm
>> Er-01: Motor Data Error
>> Er-02: Alarm
>> Er-03: STOP Button Input
>> Er-04: Line-to-Line Resistance Error
>> Er-05: No-Load Current Error
>> Er-08: Rated Slip Error
>> Er-09: Acceleration Error
>> Er-11: Motor Speed Error
>> Er-12: Current Detection Error
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