Hypertherm HTA Rev 6.00 Operators Manual - Manual (Page 205)

Appendix C: Optional Command™ THC 191
Stop Time
Specifies the amount of time that motion will pause at the end of a cut. This pause is
advantageous for allowing the torch to completely raise and clear cut irregularities before
continuing on to the next cut segment.
Accel Delay
The Accel Delay parameter delays the activation of the Automatic Voltage Control to allow for the
cutting table to reach a steady cutting speed. This parameter should be set as low as possible
without allowing the torch to dive excessively at the beginning of a cut.
Retract Delay Time
Specifies the time delay at the end of the cut signal will pause prior to retracting the torch.
Ignition
Enables use of the Ignition output for use in igniting the plasma torch. If your plasma system
requires a separate ignition signal, toggle Ignition to ON. If not, leave Ignition OFF.
Voltage Control
This setup parameter allows the operator to select the Command
® THC to operate in Manual or
Automatic mode. Manual mode will disable the torch height control allowing the torch to cut at
the specified cut height and voltage. Automatic mode allows the THC to command the torch up
and down to maintain the voltage at the specified setpoint.
Retract Full/Partial
Selects the retract distance to be set at Full or Partial. In the Full retract mode, the torch will
retract to the Home position. In Partial retract mode, the torch will retract to the set retract
distance.
Retry On Transfer Fail
The Retry On Transfer Fail feature is used to specify the number of times the control will attempt
to fire the torch in the event that the torch fails to ignite.
Transfer Time
The Transfer Time parameter specifies the amount of time used to attempt ignition of the torch.
The ignition is confirmed by the Arc Sense Input (Arc on Feedback) to the control.
Set Arc Current
The Set Arc Current feature allows the user to set the arc current at the plasma supply. This
feature uses the “Set Current BCD” output from the control to activate the BCD inputs at the
plasma supply. EIA RS-274D part program code G59 Vvalue Fvalue for setting current is
supported.
Corner Current Percent
The Corner Current Percent feature allows the operator to select a reduced current setting to be
executed when cutting corners to improve cut quality. This value is a percentage of the Set
Current (above) and is active when the Torch Height Disable Output is on.
Set Arc Voltage
The operator may input the desired Arc Voltage for the material being cut.