Lincoln Electric SVM120-A service manual Normal Open Circuit AC Weld Voltage Waveform

Models: SVM120-A

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F-47

F-47

TROUBLESHOOTING & REPAIR

NORMAL OPEN CIRCUIT AC WELD VOLTAGE WAVEFORM

HIGH IDLE – NO LOAD – OUTPUT CONTROL AT MAXIMUM

CH1

0 volts

50 volts

5 ms

This is the typical AC output voltage generated from a properly operating machine. Note that each vertical division represents 50 volts and that each horizontal division represents 5 milliseconds in time.

Note: Scope probes connected at machine output terminals.

SCOPE SETTINGS

Volts/Div

50V/Div.

Horizontal Sweep

5 ms/Div.

Coupling

DC

Trigger

Internal

 

 

RANGER 10-LX

Page 101
Image 101
Lincoln Electric SVM120-A service manual Normal Open Circuit AC Weld Voltage Waveform