ESAB Fabricator 181i, Service Manual

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ESAB FABRICATOR 181i
TROUBLESHOOTING 6-16 Manual 0-5449
4 Wire Speed Calibration
NOTE: these adjustments are on the wiring side of the main inverter module circuit board.
A
B U02 pin 6
C
D
E U01 pin 1
F U01 pin 2
G U01 pin 3
0V for wiredrive circuit (R017)
W0 2 MIN SPEED
W05 MAX SPEED
A-09995
Select MIG mode on the front panel.
Remove the load from the output terminals.
Set front panel WIRESPEED (AMPS) potentiometer to minimum. AMPS display should read “30”
Adjust W02 trimpot until motor volts is 4.2V +/- 0.2V
Set front panel WIRESPEED (AMPS) potentiometer to maximum. AMPS display should read “218”
Adjust W05 trimpot until motor volts is 24.7V +/- 0.2V
Recheck settings
Set SW0-1 to OFF, SW0-1 to ON, SW0-3 to OFF, SW0-4 to ON to disable calibration of output volts & amps, and calibration of wire feed
speed and return to normal operation.
5 Wire Speed Testpoint Waveforms
Select MIG mode on the front panel and remove the load from output terminals.
Adjust the wirespeed control knob to the max and the digital amperage meter will display a preview value 654.
Now you can measure below waveforms according to different testpoint when turn on the MIG torch trigger switch.