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F-101TROUBLESHOOTING & REPAIRF-101

NORMAL WELD VOLTAGE WAVEFORM (WIRE CV)

MACHINE LOADED TO 300 AMPS AT 28 VOLTS

0 volts

20V1ms

This is the typical DC voltage gener- ated from a properly operating machine. Note that each vertical divi- sion represents 20 volts and that each horizontal division represents 1 millisecond in time.

The machine was loaded with a resis- tance grid bank to 300 amps at 28 volts.

NOTE: Scope probes are connected at weld output terminals.

 

SCOPE SETTINGS

 

Volts/Div

20V/Div.

 

 

 

 

Horizontal Sweep

1 ms/Div.

 

 

Coupling

DC

 

 

Trigger

Internal

 

RANGER 305D

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Lincoln Electric SVM175-A service manual 101TROUBLESHOOTING & REPAIRF-101, Normal Weld Voltage Waveform Wire CV