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F-34

F-34

TROUBLESHOOTING & REPAIR

TYPICAL DC WELD OUTPUT WAVEFORM (CV MODE)

MACHINE LOADED

CH1

0 volts

20 volts

5 ms

MACHINE LOADED TO 200 AMPS AT 20 VDC

This is the typical CV output voltage generated from a properly operating machine. Note that each vertical division represents 20 volts and that each horizontal division represents 5 milliseconds in time. The machine was loaded with a resistance grid bank.

Note: Scope probes connected at machine output terminals.

SCOPE SETTINGS

Volts/Div

20V/Div.

Horizontal Sweep

5 ms/Div.

Coupling

DC

Trigger

Internal

 

 

RANGER 8

Page 74
Image 74
Lincoln Electric SVM107-B service manual Typical DC Weld Output Waveform CV Mode, Machine Loaded