Corrective action
1. Make sure to use correct cutting techniques:
a. Use a workpiece that is large enough for the selected parts or nesting program.
b. Use the correct parts or nesting program.
Ramp-down errors can occur when you cut across large kerfs or cut at incorrect heights.
c. Stop every cut with the plasma arc still attached to the workpiece.
d. Decrease the cut speed when the end of the cut is near.
e. Stop the plasma arc before the part is completely cut, or let the cut complete during ramp
down.
f. Program the path of the torch into the scrap area for ramp down.
Troubleshooting for high DC bus voltage
Diagnostic code 621
Diagnostic code 621 occurs when the DC bus voltage is too high.
Symptoms
Code Symptoms XPR models XPR action Code cancels with...
621 The DC bus voltage is more than 414 V. All models Shut down Remote on-off
Corrective action
1. Make sure that the input-line voltage is within ±14% of nominal.
Refer to General input power requirements on page 44.
2. If you cannot find or correct the problem, speak to your cutting machine supplier or regional
Hypertherm Technical Service team.
Troubleshooting for low DC bus voltage
Diagnostic code 622
Diagnostic code 622 occurs when the DC bus voltage is too low.
Diagnostics and Troubleshooting
8
343811530Instruction ManualXPR460
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