Hypertherm THC ArcGlide - Manual (Page 182)

182 ArcGlide THC Instruction Manual 806450
4 – Maintenance
Problems and solutions
Unable to establish communication with the CNC or plasma system.
 Examine Hypernet cables from the ArcGlide.
 Verify that the Ethernet switch is turned ON.
 Verify that the plasma control board is not receiving dual serial signals. If the CNC communicates directly with the
plasma system over a serial (RS-422) cable, verify that you are using the correct cable (123760) to connect the
control board and the ArcGlide plasma interface board.
No response to CYCLE-START-IN at THC.
 Verify that the control module is receiving power.
 Examine the line input fuses in the power module of the control module.
 Watch the Cycle Start state on the CNC input screen (Screen 3) on the THC control module display. Cycle Start
should alternate between ON and OFF as the Cycle Start input becomes active or inactive. Test the machine
interface inputs on the THC control board.
 Examine the condition of the external interlock on the THC control board. See THC control interface board (228577)
on page 215 for more information.
 Verify that the corresponding station is enabled and that the green Enable lamp on the lifter is illuminated.
Arc ignites before IHS is complete.
 Verify that the Hold signal is reaching the plasma system.
 If plasma system has a Hold signal, examine it for correct wiring.
 Verify that the Stall Force is set correctly. Adjust it if necessary.
 Verify that the plasma system coolant meets the manufacturer’s specifications.
 Look for false ohmic contact sense.
 Verify that the corresponding station is enabled on the lifter, HMI, or CNC.
The green Enable lamp on the lifter is not illuminated.
See Install the lifter on page 77 for more information.
The torch does not approach the workpiece at programmed IHS speed and Stall Force.
 Verify that the THC is in Automatic Mode. If not, change the mode to Automatic.
 Verify that Stall Force is not set too low.
 Verify that IHS Speed is not set too high.
 Look for cable and hose obstructions that may stop movement.