Lincoln Electric IM649 Wave Designer - Manual (Page 36)

A.3 ADAPTIVE AND NON-ADAPTIVE MODE
To proficiently develop welding procedures using
Wave Designer, the key concept of Adaptive
versus Non-Adaptive welding must be understood. Wave Designer allows the user to set the
machine into either adaptive or non-adaptive mode. During the wave design process both modes
will be used depending upon the step.
A.3.1 ADAPTIVE MODE
In normal synergic welding the Power Wave welds in the adaptive mode. As the stickout changes
due to variations in the workpiece or operator hand motion, the Power Wave “adapts” or changes
the pulse variables to maintain a constant arc length. This is illustrated in Figure A-3.
Since adaptive mode attempts to maintain a fixed arc length, this is the mode that you will use
when adjusting an optimal arc length. Refer to steps 3 and 4 “Adjust the Peak Volts” in the flow
chart of paragraph A.4. Note: This step must be performed with the Trim set equal to 1.0 on the
Power Wave machine.
A.3.2 NON-ADAPTIVE MODE
In non-adaptive mode, the Power Wave does not adapt the pulse variables to maintain a
constant arc length as the stickout varies. This is illustrated in Figure A-3.
Therefore, the non-adaptive mode is the mode that you use to develop the proper waveform
variables. If this is attempted in the adaptive mode, you will get erroneous results since the
machine will be attempting to change (adapt) these variables. Refer to step 2 “Adjust Pulse
Variables at Fixed Stickout” in the process flow chart, Figure A-4.
NOTE: During this step of the wave design process, it is important to manually hold a constant
stickout.
FIGURE A-3. FIXED STICKOUT (NON-ADAPTIVE) VS.
OPTIMAL ARC LENGTH (ADAPTIVE).
A-4 Appendix A PULSE WAVE SHAPING PRINCIPLES
WAVE DESIGNER
27850031
ADAPTIVE
NON-
ADAPTIVE
ARC
LENGTH
ARC
LENGTH
ARC
LENGTH
ARC
LENGTH 1
ARC LENGTH
ARC LENGTH
=
ARC LENGTH
ARC LENGTH
=
2
2
1
1
1
2
2
STICKOUT
STICKOUT
STICKOUT
STICKOUT
1
2
2
1