Hypertherm MicroEDGE Pro Shape Cutting Control Rev.2 - Manual (Page 107)

Maintenance and diagnostics
MicroEDGE Pro Instruction Manual 807290 4-11
tHC test
WARNINg!
Warning! to prevent motion on the table, disconnect all axis cables from the CNC before
conducting this test.
Conduct this test if:
• Nozzle contact is not functioning properly. For example, IHS using ohmic contact is not sensing the plate or is not
accurate, the torch is running into the plate during cutting without retracting, or the torch is firing in the air.
• Arc voltage feedback is not functioning properly.
• The torch is rising off the plate or driving into the plate during the first part of a cut after piercing.
to test a tHC port:
1. On the Machine Interface screen, choose the THC port you want to test.
2. Follow the instructions on the screen to connect the THC test cable to the THC port you selected and to the Axis
1 – 2 port (Hypath) or X/Y port (Picopath). Use the blue tester for HyPath and the yellow tester (not shown) for
Picopath.
3. On the Machine Interface screen, choose Test. A message informs you if the test is successful.
If the test fails, contact your OEM or system integrator to check or replace these parts in the following order:
1. Analog field interface card
2. Ribbon cable
3. Analog input card