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Alarmcodes Yaskawa Varispeed 626

Alarm Codes (Alarm-Codes) und Fehlermeldungen für die Yaskawa Varispeed VS-626M5 und VS-656MR5 Serie.

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Items 88

Fault No. Name Contents Corrective Actions Comments
88888 YENET1200 communication signal delay After turning control power ON, NC machine and YENET1200 communication is not establishe

- Check the wiring of YENET1200 communicatin line
- Check NC machine power supply

AL-01 Overcurrent Output current exceeded overcurrent detection value, or Inverter output (load) was short-circuited Check the wiring for Looseness, etc
AL-02 Ground fault Inverter output side ground current exceeded grounding detection level

- Check the motor for deteriaration of insulation
- Check the wiring between Inverter and motor

AL-04 Main circuit fuse blown DC circuit fuse was blown

- Check for damage to transinstor, short-circuits on laod side, ground fault, etc.
- Check the Inverter output wiring

AL-05 Inverter output overload Output current of 120% of 30-minute ratin runs for over one minute

- Reduce the load
- Check the load shaft (Inverter, Servo) capacity

AL-06 Motor overload Motor overload capacitiy exceeded Reduce the load
AL-07 Motor Overload (When the motor is locked) The motor exceede the overload level at low speed (30 min-1 or less)

- Check if the load is heavy or a tool is jammed
- Make sure that the motor shaft rotates. (Check if a motor fault or a contact between the rotor and the stator occurs, of if a bearing is damaged.)

AL-10 Converter fault A fault occurred in Converter Unit. Check fault contens by using Converter LED
AL-11 Main ciruit overvoltage Main circuit DC bus voltage exceeded the overvoltage set value.

- Check the input supply voltage
- Check the load shaft (Inverter, Servo) capacity
- Check the control constants

AL-12 Main circuit undervoltage Main circuit DC bus voltage bacame lower than undervoltage detection level during run. Check the input supply voltage.
AL-13 Control circuit undervoltage Control cirguit power supply became lower then undervoltage detection level Check the control supply voltage
AL-20 Winding selection fault Winding selection was not completed within set time

- Check the control constant C1-25
- Check the manetic contactor wiring for winding selection

AL-21 Emergency stop fault Inverter did not stop within 10 seconds after emergency stop command

- Check control constant C1-25
- Check the setting of control constant C1-24 and wether external torque limit signals TLL and TLH are input

AL-30 Encoder signal cable disconnection Motor encoder signal was disconnected or connected improperly Check the wiring of encoder signal lines
AL-31 Motor overspeed Motor speed exceeded 120% of set rated speed

- Confirm that encoder signal lines are separated from main circuit or other power lines
- Check the control constants

AL-32 Excessive seed deviation Seed falls to less than 50% of reference value

- Check if the load is heavy or a tool is jammed
- Check whether external torque limit signals TLL and TLH are input
- Check the control constants
- Check the wiring of encoder signals lines

AL-33 Motor Lock Detection (For IP motors only) The motor is locked. (The motor speed remains at 35 min-1 or lower for 10 seconds during the toque refernece saturation.)

- Check if the load ist heavy or al tool is jammed
- Check the wiring between Inverter and motor
- Check the wiring of encoder singal lines
- Make sure that the motor shaft rotates
- Check if a motor fault or a conact between rotor an stator occurs, or if a bear is damaged

AL-40 Motor overheat 1 Motor temperatur exceeded upper limit (minor fault)

- Check the wiring
- Confirm that motor colling air is normal with power ON
- Confirm that the fan is not clogged with dust or oil
- Check the wiring of motor thermistor signal lines
Notice:
NTC value is about 10 kOhms at 25 C Celsius

AL-41 Motor overheat 2 Motor temperatur over upper limit continued for over one minute

- Check the wiring
- Confirm that motor colling air is normal with power ON
- Confirm that the fan is not clogged with dust or oil
- Check the wiring of motor thermistor signal lines
Notice:
NTC value is about 10 kOhms at 25 C Celsius

AL-42 Motor thermistor disconnection Motor temperature detection thermistor was disconnected

- Check the motor thermistor singal wiring
- Check the motor ambient temperatur. (Raise the temperature to above - 10 °C or more.)

AL-43 Heatsink overheat 1 Heatsink temperature exceeded uper limit (minor fault). Check the ambient temperature for effective cooling
AL-44 Heatsink overheat 2 Heatsink temperature over upper limit continued for one minute or longer Check the ambient temperature for effective cooling
AL-45 Heatsink thermistor disconnection

Thermistor for heatsink temperature detection was disconnected.
The ambient temperature is low (< - 20°C).

- Replace the unit
- Raise the ambient temperature to above -20°C

AL-46 Control PCB temperature fault 1 Control PCB temperature exceeded 80°C Check the ambient temperature for effective cooling
AL-47 Control PCB temperature fault 2 Control PCB temperature exceeded 85°C Check the ambient temperature for effective cooling

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