Electronics & Noise Control

Common Noise Problems

Plasma cutting creates electrical interference that can cause random cut failures, THC glitches, or communication dropouts.

Best Practices

• Ground everything: table, gantry, control box, and plasma power supply tied to a single earth ground.

• Separate high-voltage and low-voltage lines. Never run torch leads alongside signal cables. Cross at 90° if necessary.

• Use shielded cables for RS485 and USB connections.

• Secure RS485 hub plugs — vibration loosens them over time.

• Keep torch leads off the floor to reduce interference loops.

Troubleshooting

• Random stops → check grounding and shielding first.

• THC cutting out → reseat connections in the CandCNC hub.

• Motion glitches → inspect motor/signal wiring for noise pickup.