Lincoln Electric IM649 manual STT Overview, Peak Time Peak Amps Tailout Speed

Models: IM649

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B-2

STT WAVE SHAPING PRINCIPLES

Appendix B

B.2 STT OVERVIEW

Figure B-1 illustrates the variables of the STT welding process. Each of these variables can be programmed into a weld table using the Wave Designer software. Figure B-2 shows how the STT waveform and the primary variables produce a weld.

For more details on each of these variables, refer to Primary STT Waveform Components and Secondary STT Waveform Components in paragraphs B.5 and B.6 of this appendix.

FIGURE B-1. STT WAVEFORM PARAMETERS.

AMPERES

PINCH START

BACKGROUND AMPS

dV/dt CALCULATE

PEAK TIME

PEAK AMPS

TAILOUT

SPEED

TIME

Wave Designer Pro Off Line - stt.swf

File

Tools

Print

Help

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

500

 

 

 

 

 

 

 

 

 

 

 

STT Waveform Editor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

400

 

 

 

 

 

 

 

 

 

 

 

Wire Feed Speed

90

Edit

 

 

 

 

 

 

 

 

 

 

 

 

Peak Amps

 

200

300

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Backgrd Amps

 

60

200

 

 

 

 

 

 

 

 

 

 

 

Tailout Speed

 

.500

100

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pinch Start

 

140

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

1

2

3

4

5

6

7

8

9

10

 

Pinch Peak

 

.70

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￿￿￿

 

 

 

 

 

 

 

 

 

Peak Time

 

1.0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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￿

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￿

 

 

 

 

 

 

 

 

 

dV dt detect

 

14.00

￿

 

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￿￿

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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￿

￿

￿￿

 

Start

Explain

About

 

 

 

 

 

 

 

 

 

 

 

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Status

read template2.map

 

 

 

 

Off Line

 

Stand by

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

27850057

WAVE DESIGNER

Page 56
Image 56
Lincoln Electric IM649 manual STT Overview, Peak Time Peak Amps Tailout Speed