Troubleshooting for high current
Diagnostic codes 555, 556, 557
Diagnostic codes 555 – 557 identify when the chopper current is too high.
Symptoms
| Code | Symptoms | XPR® models | XPR action | Code cancels with... |
|---|---|---|---|---|
| 555 | For a minimum of 10 milliseconds, the electric current for Chopper 1 is more than 170 A. | All models | Shut down | Remote on-off |
| 556 | For a minimum of 10 milliseconds, the electric current for Chopper 2 is more than 170 A. | XPR300®, XPR460® | ||
| 557 | For a minimum of 10 milliseconds, the electric current for Chopper 3 is more than 170 A. | XPR460 |
Corrective action
- Examine the consumables, and replace the consumables that have damage or excess wear.
- Do a test for gas leaks, and replace the leaking components if found.
- Examine the contactors, and replace the contactors that have damage, if found.
- Look for Direct Current (DC) bus errors.
-
What system do you have?
Option Description XPR170® Go to step 7. XPR300 or XPR460 Continue with the next step. -
Interchange the choppers and make sure that the diagnostic code aligns
with the change:
- If yes, the chopper is bad and must be replaced.
- If no, continue with the next step.
- Examine the choppers and inductors.
- Replace choppers or inductors that have damage, if found.
- Make sure that the arc stays on the workpiece during cutting.
- If you cannot find or correct the problem, speak to your cutting machine supplier or regional Hypertherm® Technical Service team.