Oscilloscope waveforms, Troubleshooting & repair, Normal open circuit weld voltage waveform – Lincoln Electric POWER-ARC 4000 SVM103-A User Manual
Page 59
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TROUBLESHOOTING & REPAIR
POWER-ARC 4000
F-18
CH1
0 volts
5 ms
50 volts
SCOPE SETTINGS
Volts/Div ....................50V/Div.
Horizontal Sweep ....5 ms/Div.
Coupling ............................DC
Trigger .........................Internal
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.
NORMAL OPEN CIRCUIT WELD VOLTAGE WAVEFORM
HIGH IDLE – NO LOAD
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