Lincoln Electric SVM194-A service manual 61TROUBLESHOOTING and REPAIRF-61

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F-61TROUBLESHOOTING AND REPAIRF-61

TYPICAL DC WELD OUTPUT VOLTAGE WAVEFORM

MACHINE LOADED – SELECTOR SWITCH AT MAXIMUM POSITION

CH1

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0 volts

20 volts 5 ms

MACHINE LOADED TO 250 AMPS AT 40 VDC

This is the typical DC 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. The machine was loaded with a resistance grid bank.

Note: Scope probes connected at machine output terminals.

SCOPE SETTINGS
Volts/Div	20V/Div.
Horizontal Sweep	5 ms/Div.
Coupling	DC
Trigger	Internal

CLASSIC® 300D & 300G