Hypertherm XPR300 User Manual

Diagnostics and Troubleshooting
8
XPR300 Instruction Manual 809480 349
11 . If you find 24 VDC, continue with the following steps:
a. Make sure that both the workpiece and the torch connect console are grounded in the same
location.
b. Touch the torch tip to the workpiece or attach a jumper wire between the torch tip and the
chassis ground.
c. Examine LED D2 on the ohmic contact PCB. Refer to Torch connect console ohmic PCB
(141368) on page 358.
d. Examine LED D15 on the control PCB. Refer to Torch connect console control PCB
(141334) on page 359.
e. Make sure that LED D2 and D15 both illuminate.
f. If both LEDs illuminate, make sure that the CNC is receiving ohmic contact signals from the
cutting system or torch height controller.

If receiving ohmic contact signals, refer to the instruction manual that
came with your CNC for troubleshooting recommendations.
g. If LED D2 is not illuminated, replace the ohmic contact board (141368).
h. If LED D2 is illuminated and D15 is not, examine the wiring harness between both boards.
Look for loose wiring.
12. If the code continues, contact your cutting machine supplier or regional Hypertherm Technical
Service Team.

Hypertherm XPR300 Specifications

General

Brand	Hypertherm
Model	XPR300
Category	Welding System
Language	English