Corrective action
1. Remove the power from the cutting system.
2. Examine J1.8 on PCB 1 (the control PCB in the plasma power supply) and the work cable sensor on
the I/O panel on PCB 5 (the I/O PCB in the plasma power supply) for damage and loose connections.
3. If the connections are good and the code continues, replace the I/O PCB.
4. If you cannot find or correct the problem, speak to your cutting machine supplier or regional
Hypertherm Technical Service team.
Troubleshooting for arc timeouts during the Ignite state
Diagnostic code 654
Diagnostic code 654 identifies a problem related to plasma arc timeouts at the start of a cut.
Symptoms
Code Symptoms XPR models XPR action Code cancels with...
654 During the Ignite state, Chopper 1 does not go into
the Pilot Arc state for a minimum of 100 millisec-
onds.
All models End of cycle Remote on-off
Corrective action
1. Remove the power from the cutting system.
2. Supply power to the cutting system.
3. Send a process to the cutting system.
4. If you cannot find or correct the problem, speak to your cutting machine supplier or regional
Hypertherm Technical Service team.
Troubleshooting for current in chopper during preflow
Diagnostic code 655
Diagnostic code 655 occurs when the chopper finds current during preflow.
Diagnostics and Troubleshooting
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811530 Instruction Manual XPR460
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