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F-45

F-45

TROUBLESHOOTING & REPAIR

NORMAL OPEN CIRCUIT WELD VOLTAGE WAVEFORM (HIGH CV MODE)

HIGH IDLE – NO LOAD – OUTPUT CONTROL AT MAXIMUM

CH1

0 volts

20 volts

5 ms

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.

Note: Scope probes connected at machine output terminals.

SCOPE SETTINGS

Volts/Div

20V/Div.

Horizontal Sweep

5 ms/Div.

Coupling

DC

Trigger

Internal

 

 

RANGER 10-LX

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Image 99
Lincoln Electric SVM120-A service manual Normal Open Circuit Weld Voltage Waveform High CV Mode