Lincoln Electric R3R-500 Welder User Manual


 
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TROUBLESHOOTING & REPAIR
F-35 F-35
IDEALARC R3R
This is the typical DC open circuit
voltage waveform generated from a
properly operating machine. Note
that each vertical division represents
50 volts and that each horizontal divi-
sion represents 5 milliseconds in
time.
Note: Scope probes connected at
machine output terminals: (+) probe
to positive terminal, (-) probe to neg-
ative terminal. (R3R 500 machine)
SCOPE SETTINGS
Volts/Div.....................50V/Div.
Horizontal Sweep.....5 ms/Div.
Coupling ............................DC
Trigger .........................Internal
NORMAL OPEN CIRCUIT VOLTAGE WAVEFORM
MAXIMUM OUTPUT SETTING – NO LOAD
0 volts
5 ms
50 volts