Hypertherm XPR300 Instruction Manual page 272

Diagnostic code
Diagnostic code
number and
name
category
521 Pilot arc t/o (no arc
transfer)
Alert
522 Preflow t/o
Alert
523 Preflow purge t/o
Error
524 Cutflow purge t/o
Error
525 Inert gas purge t/o
Error
Description Corrective action
No current detected on the
work lead for 500
1. Make sure that the transfer height is correct.
milliseconds after the pilot arc
2. Examine the consumables. Replace the
current is established.
For a minimum of 3
3. Do a torch lead test. Refer to
milliseconds, the sensor in
the work lead is unable to
measure current greater than
the transfer reference value.
The cutting system cannot
complete the preflow routine
within 30 seconds.
The preflow purge cannnot
1. Review the diagnostic code history for previous
get to the setpoint within
45 seconds.
The cutflow purge cannnot
2. Examine the consumables, valves, and inlet
get to the setpoint within
45 seconds.
The XPR cutting system is
unable to complete the N
2
purge within 45 seconds. The
process did not get selected.
consumables that have damage or excess wear.
How to test
continuity between the nozzle and workpiece
page 342.
gas-related codes. Previous codes can indicate
where to look for flow or pressure problems.
hoses. Make sure that they are correct. Replace
them if you find damage or excess wear.
Code cancels
XPR action
with
End of cycle Start or set
process;
remote on-off
on
End of cycle Start or set
process;
remote on-off
None Set process;
remote on-off
None Set process;
remote on-off
None Set process;
remote on-off