When operating a handheld laser welding machine, you might encounter a situation where the wire feeder roller does not running, preventing proper wire feeding. This article outlines the common causes and step-by-step solutions to resolve the issue effectively.

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Problem: Wire Feeder Roller Not Running

Possible Causes:

1. Wire Feeder Power Switch Is Off – The machine’s power source is not activated.
2. Wire Feeding Speed Is Too Fast – The speed exceeds the machine’s working range.
3. Signal Line Issues – Signal lines are either connected incorrectly or have a broken circuit.
4. 24V Power Supply Failure – The switching power supply might be damaged.
5. Driver Alarm Red Light On – The driver may be malfunctioning or receiving improper signals.
6. Motor Damage – The motor may have short-circuited or burned out.

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Solutions to Resolve the Issue

1. Check the Wire Feeder Power Switch

• Ensure the power switch of the wire feeder is turned on.
• If the machine remains inactive, inspect the power connection for loose or damaged wires.

2. Verify the Wire Feeding Speed

• The recommended wire feeding speed is between 2-80 mm/s.
• Go to the system settings and adjust the wire feeding speed to fall within this range.

3. Inspect the Signal Line Connections

• Signal line interference or incorrect connections can halt the roller.
• Restart the power supply and check if the issue resolves.
• Note: Avoid operating the laser welder alongside TIG welding equipment, as this can cause signal interference.
• Use a multimeter in continuity mode:
  • Place one probe on the PUL+, PUL-, DIR+, and DIR- ports in the control box (CN1).
  • Place the other probe on the respective PUL+, PUL-, DIR+, and DIR- ports on the driver.
  • If continuity exists, the signal lines are intact. If not, check for broken circuits or incorrect wiring.

4. Check the 24V Power Supply

• Use a multimeter to test the input and output voltage of the 24V power supply.
  • If input voltage is present but output voltage is missing, the power supply is likely damaged and needs replacement.

5. Inspect the Driver for Alarms

• Look for a red alarm light on the driver.
  • If illuminated, consult the driver manual to troubleshoot or reset the system.
  • Ensure no signal line errors are contributing to the alarm.

6. Test the Motor

• Use a multimeter in continuity mode to check the motor wires:
  • Test in pairs; a functioning motor will show two groups of continuity.
  • If all wires are connected (short circuit), the motor is damaged and must be replaced.

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Additional Notes:

• Perform regular inspections of the signal lines, power supply, and motor to prevent such issues.
• Keep a multimeter handy for quick diagnostic checks.
• Different brands of wire feeders have slightly different solutions. If you need assistance, please contact us
• For complex repairs, consult a professional technician or contact customer support.

By following these steps, you can resolve most issues related to the wire feeder roller and ensure smooth operation of your handheld laser welding machine.

Stay efficient and weld with confidence! 💪✨