Lincoln Electric FineLine 300HD Operator's Manual page 65

BK8053-000107 Rev D
4.2.4 Start Signal Sequence
Double Edge Start (DES), which requires two CNC start signal pulses ( Figure 15 ), is
required if using the Arc Hold feature or with optional APC commissioned; otherwise, the
System will default to Single Edge Start (SES) as shown in Figure 16 . If optional APC
is commissioned and the CNC (Height Control) cannot generate (operate with) a DES,
contact Lincoln Electric service department. The Arc Hold feature can only be used with
DES.
• Receipt of initial edge of CNC Start Signal; Initiates IHS sequence.
• IHS sequence complete.
• Receipt of second edge of CNC Start Signal. Pilot Arc initiated (normal start
sequence).
• Transferred Arc Sensed.
• Motion/Pierce Delay (time) initiated, Current Upslope initiated.
• Motion/Pierce Delay complete. Motion initiated.
This information is subject to the controls of the Export Administration Regulations [EAR]. This information shall not be provided to
non-U.S. persons or transferred by any means to any location outside the United States contrary to the requirements of the EAR.
Figure 15: DES Timing Diagram
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FineLine 300HD Plasma System