Lincoln Electric IM649 manual Adaptive and NON-ADAPTIVE Mode, Adaptive Mode

A-4 PULSE WAVE SHAPING PRINCIPLES Appendix A

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).

ADAPTIVE

STICKOUT1	STICKOUT2
	ARC
ARC LENGTH2	LENGTH 1	ARC
=		LENGTH 2
ARC LENGTH1

NON-
ADAPTIVE	STICKOUT2
STICKOUT1
	ARC	ARC
	LENGTH 1
ARC LENGTH2		LENGTH 2
=
ARC LENGTH1
		27850031

WAVE DESIGNER