Panel reference · WSM-315 TIG
WSM-315 TIG panel board reference
Use this page when a WSM-315 panel setting does not affect welding behavior: current control, pulse setting, gas time, down-slope, 2T/4T, remote/foot-pedal mode or front-panel indicator functions. Panel-board faults often look like bad control-board or output-stage faults until command signals are checked.
Panel functions to separate
Current controls
Main current, peak/base current and remote command can fail independently from the inverter power stage.
Pulse controls
Pulse frequency, duty and peak/base relationship can produce unstable or missing pulse output.
Timing controls
Pre-flow, post-flow and down-slope settings affect gas and arc-stop behavior.
2T / 4T
Trigger latching changes whether the torch must be held or toggled.
Foot pedal / remote
Remote contactor and remote current paths can fail while local panel still works.
Indicators
Protection, power and mode indicators help identify whether command or protection logic is active.
Panel fault table
| Symptom | Panel-side check | Then check |
|---|---|---|
| Current knob has no effect | Potentiometer wiper change and connector continuity. | Control-board current command input and feedback loop. |
| Foot pedal has no effect | Remote switch state, pedal connector, pot output and contactor line. | Control-board remote input and mode selection logic. |
| Pulse does not work | Pulse enable, frequency/duty pots and panel-to-control connector. | Control-board pulse logic and current-command modulation. |
| Gas post-flow abnormal | Post-flow control setting and timing signal. | Gas relay/solenoid output and control-board timing circuit. |
| 2T/4T behavior wrong | Mode switch contact and latch command. | Torch input and control-board trigger logic. |
Panel board rule
If the machine welds but ignores settings, start with the panel board and command wiring before replacing the main control board. If the machine does not weld at all, use the start-sequence route first.