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FX650XL
VOLTAGE CALIbRATION
1. Connect a resistive load bank to the machine configured for
300A/20V (750A/50V equivalent).
2. Connect a certified calibrated voltmeter to the output circuit.
Note: High speed voltage transients associated with inverter
welders output can adversely affect the accuracy of some
metering equipment. The M25303 low pass filter supplied
with the K4171-1 Power Wave Calibration Kit is strongly
recommended between the meter and the power source to
reduce this effect.
3. Disconnect input power from the machine being calibrated;
remove the right case side to provide access to the User
Interface. Set position "1" on the dip switch to "ON" as
shown in Figure B.7. (Note: additional dip switch positions
may be different than pictured below depending on the
configuration of your machine. Refer to INTERNAL CONTROLS
– ENABLING VRD, MULTI-WELD sections of the manual).
Replace the right case side.
4. Rotate the Hot Start control and Arc Control knobs completely
counter-clockwise.
5. Replace the right case side; reconnect input power to the
machine and energize.
6. The display should read "Cur CAL".
7. Rotate the Arc Control knob until the display reads "VoL CAL".
8. Rotate the Hot Start knob clockwise to enable the output
which will be indicated by the scrolling message "AdJ Pot So
rEAL VoL = 20 VoL" on the display.
9. The actual output voltage should be 20 +/- 0.5 V. If the
actual output voltage is within the specified limits, skip to
step 9.3. If the actual output voltage is not accurate perform
the following:
9.1.Adjust the output control knob until the actual output
voltage reading is within the specified range.
9.2.Toggle the Local/Remote switch to save the calibration.
The display should flash "CAL SEt".
9.3.Rotate the Hot Start knob counter-clockwise to disable
the output.
10. Disconnect input power from the machine being calibrated;
remove the right case side to provide access to the User
Interface. Set position "1" on the dip switch back to "OFF".
VOLTAGE CALIBRATION COMPLETE
TO RESTORE FACTORY CURRENT CALIbRATION
1. Connect the resistive load bank and test voltmeter to the
welding output terminals.
2. Disconnect input power from the machine being calibrated;
remove the right case side to provide access to the User
Interface. Set position "1" on the dip switch to "ON" as
shown in Figure B.7.
3. Rotate the Hot Start control and Arc Control knobs completely
counter-clockwise.
4. Reconnect input power to the machine and energize.
5. The display should read "Cur CAL".
6. Rotate the Arc Control knob until the display reads "Fct Cur".
7. Rotate the Hot Start knob clockwise until a message scrolls
across the screen.
8. Toggle the Local/Remote switch to save the calibration. The
display should flash "CAL SEt".
9. Rotate the Hot Start knob counter-clockwise to disable the
output.
10. Disconnect input power from the machine; remove the right
case side to provide access to the User Interface. Set
position "1" on the dip switch back to "OFF".
TO RESTORE FACTORY VOLTAGE CALIbRATION
1. Connect the resistive load bank and test voltmeter to the
welding output terminals.
2. Disconnect input power from the machine being calibrated;
remove the right case side to provide access to the User
Interface. Set position "1" on the dip switch to "ON" as
shown in Figure B.7.
3. Rotate the Hot Start control and Arc Control knobs completely
counter-clockwise.
4. Reconnect input power to the machine and energize.
5. The display should read "Cur CAL".
6. Rotate the Arc Control knob until the display reads "Fct Vol".
7. Rotate the Hot Start knob clockwise until a message scrolls
across the screen.
8. Toggle the Local/Remote switch to save the calibration. The
display should flash "CAL SEt".
9. Rotate the Hot Start knob counter-clockwise to disable the
output.
10. Disconnect input power from the machine; remove the right
case side to provide access to the User Interface. Set
position "1" on the dip switch back to "OFF".
D-2
MAINTENANCE
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