INSTALLATION & OPERATION MANUAL
18 | P a g e w w w . n t e n g i n e e r s . i n
This feature is particularly useful when the operator does not have knowledge of the exact
voltage to be set for the Plasma source and can adjust the voltage by observing the distance
and adjusting it during cutting.
In Manual Mode the THC does not correct the height of the torch during cutting. It merely
displays the actual ARC voltage for reference. This could be used to see the ARC voltage for
sample cutting on straight surfaces. Also UP/DOWN pressed during cutting in manual mode
will JOG the torch up and down for fixed distance of 0.25mm for each press. The THC would
also issue motion signal even if the valid ARC voltage is not available from plasma.
IHS / Arc Test
IHS
The IHS button performs initial height sensing. This is used to reconfirm the pierce height at
this the plasma would be turned on. Plasma manufactures specify this height. Pressing the HIS
button again when the torch is at pierce height retracts the torch to the retract height specified
in the settings.
ARC TEST
Pressing the HIS button for 3 seconds continuously enables you issue PLASMA START signal
to the Plasms Power Source. The signal is issued for as long as the button is pressed. This
enables you to verify the plasma start wiring and the arc voltage connections. The LCD would
display the actual arc voltage when the plasma is started.
SET
The THC allows various parameters to be tunes. The SET button enables uses to enter the
settings menu to fine tune these various settings.
Pressing the SET and the IHS buttons in the settings menu allow you to move to difference
settings available in the system.
Pressing the SET button while in settings saves the changes made and exits to the Main
Screen Of the THC.
The brief of all the settings available in the THC is given below.
1. Cut Voltage
This is the target voltage the THC maintains by moving the torch up/down on a continuous
basis. This can be adjusted by the UP / DOWN button in 0.5 V increments.
2. Deadband
The system allows you to adjust the dead band between 1v to 15v. This is basically the voltage
band for which the THC will not take corrective action. For example: If the target voltage is
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