USER MANUAL
Max Allowable Sampling Error
Description: the maximum value of the difference between the last two measurements of the arc
voltage in the “Sample and Hold” mode. If the difference is less than the set value, the controller
will use the current sampled arc voltage value. If not, then this value is rejected and the last
successful one is used.
Set Arc Voltage
Description: The Voltage Control must be ON, and the Sample Voltage must be OFF.
When Sample Voltage is OFF, the Set Arc Voltage is used as the set point for torch height
control. Setting: 50 to 250 VDC
Cut Height
This value for the height at which the torch cuts the workpiece. Setting: 0.25 – 25.4 mm (0.01 –
1.0 in)
Pierce Height
Description: This value determines the height at which the torch pierces the workpiece. Setting:
0.25 – 25.4 mm (0.01 – 1.0 in)
Pierce time
Description: This is the value for the Pierce Delay. During this time, the X/Y cutting
motion is delayed to allow the plasma to fully pierce the workpiece.
Setting: 0 – 10 seconds
THC Response
Description: This gain is used when the THC is operating closed-loop arc voltage control.
How to use: If this value is set too high, the lifter positioning during closed-loop arc voltage
control will become unstable and prone to oscillation. If this value is set too low, the arc voltage
control can become slow and inaccurate. The value of 8 is appropriate.
The THC Response can be tested by change value during cutting under closed-loop arc voltage
control and checking that the THC quickly and accurately reaches the set arc voltage.
Very high speeds on very thin or highly warped metal may require increasing the Response
setting to respond faster. Be careful to not go so high the torch overshoots and oscillates up and
down. Remember you will generally want to go back to 8 normal cutting.
To optimize this response, raise this value until a very slight oscillation is detected during a cut
and then reduce the setting by 1 or 2.
Range: 1 to 30, the default setting = 8
LockHeadDown
Description: This feature avoids that the plasma torch moves down which arc voltage is up (for
example on the end of cut, when crossing a kerf or hole or going off the edge of the plate). If the
adjustable Lock Head Down Level exceeds the limit during cutting, the clearance control will be
disabled.
Setting: OFF / ON
LockHeadDown Level
Description: When crossing a kerf or hole or going off the edge of the plate, arc voltage rises very
rapidly. System will respond to the rise in voltage by lowering the torch trying to keep voltage
constant. To prevent this a LockHeadDown Level is set so when arc voltage exceeds the cutting
voltage by the % specified by the LockHeadDown Level setting system stops trying to control
height.
Hint: For thicker metal which tend to be fairly flat and using lower cutting speeds the arc voltage
doesn’t change very rapidly except when crossing kerfs & holes so using a lower % will respond
To Next Page
Loading...
Need help?
General