Hypertherm PHC Sensor - Manual (Page 52)

52
Sensor™ PHC Operation and Setup Guide
Troubleshooting Guide
Problem Solution
The Error LED and Error code
are displayed. ¾ Note the error code number and refer to the detailed list of
error indications on page 49.
No response to
CYCLE START Input ¾ Check the power switch on the PHC.
¾ Check
power connections.
¾ Check the fuse in the power entry module.
¾ Check the cycle start connection.
Torch Ignites before IHS is
complete ¾ Check that preflow during IHS is disabled – DIP SW #12 Off.
¾ Check plasma Corner Hold Input if it is used.
No IHS motion ¾ Check that the PHC is in auto mode.
¾ Check that the torch lead set is not binding.
¾ Check that the stall force is not set too low – increase stall
force setup adjustment.
Inaccurate IHS using ohmic
contact ¾ Check that the PHC is in auto mode.
¾ Check that the ohmic contact wire is connected.
¾ Check that the torch retaining cap is tight.
¾ Check for water on the plate. If there is water present,
disconnect the ohmic wire and use stall force only.
¾ Check for oil or paint coating on the plate. If they are
present, use stall force only.
¾ Check the nozzle, shield, or both and clean or replace them.
¾ Check the work plate connection.
Inaccurate IHS using stall
force ¾ To disable ohmic sensing, disconnect the wire from the
torch tip.
¾ Check that the stall force is set correctly.
¾ Check for excessive plate deflection.
¾ Check plate support.
¾ Increase the IHS setting to compensate for plate deflection.
Torch fails to ignite ¾ Check that plasma is powered and operational.
¾ Check for proper IHS height.
¾ Check that the IHS SYNC input from the CNC is not active.
¾ Check the torch consumables.
Torch fails to Transfer ¾ Check that the pierce height is not too high.
¾ Check the work plate connection.
¾ Check the torch consumables.
¾ Check the preflow gas flow rate.