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TROUBLESHOOTING
IGBT
Use a multimeter set to diode test setting. Voltage between E and C should read 0.32V±0.1V.
(See page 25 and 27)
Secondary diode (FRD)
Using a multimeter set to diode test setting. (See page 28)
Connect the negative probe to terminal #2 (see below image), and positive probe to
terminal #1, it should read 0.26V. When changed in the opposite direction, it should be
infinitely high.
Connect the negative probe to terminal #2 (see below image), positive probe to terminal #3,
it should read 0.26V. When changed in the opposite direction, it should be infinitely high.
Overload protection
The yellow light on the panel is on. Digital display shows E01. The power source will return to
normal when it cools down.
0463 714 001
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© ESAB AB 2020
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