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F-39

F-39

TROUBLESHOOTING & REPAIR

NORMAL OPEN CIRCUIT WELD VOLTAGE WAVEFORM (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 8

Page 79
Image 79
Lincoln Electric SVM107-B Normal Open Circuit Weld Voltage Waveform CV Mode, High Idle no Load Output Control AT Maximum