Hypertherm XPR170 - Page 289

Diagnostics and Troubleshooting
8
XPR170 Instruction Manual 810060 289
719
Alert
Mix pwm 100% 100% duty is reached on H
2
,
Ar, or N
2
proportional valve
supply voltage. Total flow is
decreased to keep the mix
percentage of the other
gases accurate.
Because the mixer tries to
deliver a flow, the outlet
pressure can continue to rise.
1. Make sure that the consumables are correct.
2. Make sure that the inlet pressures for N
2
, Ar,
and H
2
are consistently within acceptable
range.
3. Make sure that you have the most recent XPR
firmware. You can log into the Xnet at
www.hypertherm.com to download it.
None Start or set
process;
remote on-off
720
Alert
Mix Pout>Pin Pressure out (P21) is more
than one of the pressures on
the inlet side of the mixer
(P10 – P12) by at least 0.069
bar (1 psi).
When this occurs, the mixer
reduces flow to prevent
backflow, which can affect
cut quality.
1. Make sure that the consumables are correct.
2. Increase N
2
, Ar, and H
2
pressure during test
cutflow within acceptable range.
3. Make sure that you have the most recent XPR
firmware. You can log into the Xnet at
www.hypertherm.com to download it.
None Start or set
process;
remote on-off
721
Error
Mix param
checksum
There was a failure of the
mixing parameter checksum.
1. Use the remote on-off switch to turn OFF and
then turn ON the cutting system.
2. If the code continues, replace the gas connect
console.
Ramp down Set process;
remote on-off
722
Error
Mix flow cal There was a failure of the
mixing flow calibration.
Ramp down Set process;
remote on-off
723
Error
Mix pressure cal There was a failure of the
mixing pressure calibration.
Ramp down Set process;
remote on-off
Diagnostic code
number and
category
Diagnostic code
name
Description Corrective action XPR action
Code cancels
with