Common Wire Cutting Machine Faults: 10 Problems and Solutions

Don't panic when a machine fails. Here are the 10 most common faults with troubleshooting steps — most can be solved on your own.

1. Cutting Problems

Fault 1: Burrs on the Cut Surface

Possible causes: worn blade / excessive blade clearance / cutting speed too high

Steps:

1. Stop and inspect the blade edge (use a magnifier to check for chipping)
2. Check blade-to-die clearance (should be ≤0.02mm)
3. Lower the cutting speed and test
4. If worn, replace or regrind the blade

Fault 2: Inconsistent Cut Lengths

Possible causes: feed roller slipping / insufficient roller pressure / wrong servo parameters / bent wire

Steps:

1. Clean the feed rollers (remove chips and oil)
2. Check roller pressure (tighten appropriately)
3. Check straightening quality (wire should be straight)
4. Calibrate the servo feed length parameters

Fault 3: Won't Cut Through (wire jams)

Possible causes: dull blade / wire diameter beyond machine capacity / material too hard

Steps:

1. Confirm wire diameter is within range (e.g. M-04: 1.0-2.5mm)
2. Check whether the blade needs replacing
3. For very hard material, reduce speed or use a heavy-duty model

2. Feeding Problems

Fault 4: Feeding Jams

Possible causes: wrong roller gap / blocked guide tube / kinked wire

Steps:

1. Check feed roller gap (should be 95%-98% of wire diameter)
2. Clean the inside of the guide tube
3. Check that the wire spool unwinds smoothly

Fault 5: Feeding Length Drift (cuts get shorter/longer)

Possible causes: worn feed rollers / encoder fault / loose timing belt

Steps:

1. Check feed roller surface wear (replace if severe)
2. Check timing belt tension
3. Check encoder connections

3. Electrical Problems

Fault 6: No Response on Power-Up

Possible causes: no power / tripped breaker / emergency stop not reset / blown fuse

Steps:

1. Check the power plug and switch
2. Check the distribution box breaker
3. Check the emergency stop button (most common! rotate clockwise to release)
4. Check fuses

Fault 7: Servo Alarm

Possible causes: overload / encoder error / wrong parameters / poor cooling

Steps:

1. Record the alarm code (check the manual)
2. Check servo motor temperature (is the fan running?)
3. Check for excessive load (jamming causes overload)
4. Power cycle and retry

Fault 8: PLC / HMI No Display

Possible causes: power module fault / loose comm cable / program error

Steps:

1. Check comm cables (Ethernet/serial) are seated
2. Check the 24V power supply output
3. Restart the machine

4. Mechanical Problems

Fault 9: Abnormal Noise / Vibration

Possible causes: worn bearings / loose fasteners / insufficient lubrication / loose anchor bolts

Steps:

1. Stop and check all fastening bolts
2. Check lubrication (rails, gears, chains)
3. Check bearings for abnormal sound
4. Check anchor bolts

Fault 10: Oil Leak

Possible causes: aged seals / loose oil pipe fittings / overfilled oil

Steps:

1. Locate the leak (wipe clean and observe)
2. Tighten pipe fittings
3. Replace seals

Quick Reference Table