Lincoln Electric 11694 Service Manual page 63

®
POWER WAVE S350
12. Repeat the test at several other current levels. If the transducer
feedback voltage is correct for the actual current, the current
transducer is functioning properly. If there is no feedback voltage,
check the wiring from the control board to the current transducer.
See Wiring Diagram.
CAUTION
If using a weld cable across the output terminals instead of
a load bank, do not exceed the current rating of the cable.
13. If the supply voltages are correct but the current transducer
feedback voltages are incorrect, the current transducer or wiring
from the current transducer to the control board may be defective.
See Wiring Diagram.
14. Click on "Turn Output Off".
15. Disconnect the laptop computer.
16. If any of the tests fail, perform the Current Transducer
Removal And Replacement Procedure.
17. Remove the input power to the Power Wave S350 machine.
18. Perform the Case Cover Replacement Procedure.
CURRENT TRANSDUCER TEST
Figure F.24 – Current transducer location
CURRENT
TRANSDUCER
TROUBLESHOOTING AND REPAIR
(continued)
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