S0740 800 196/E101019/P76
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ca41_15_1
15AP1:5
Gate driver stages and switching circuits
WARNING!
Dangerous voltage - mains voltage. Never measure the gate signals when
the power source is connected to the mains supply.
The gate pulse frequency is 40 kHz. See page 50 for screen traces of
waveforms and measurement instructions.
Transformers TR2 and TR3 are gate driver transformers for galvanic isolation
of the drive circuits from controller board 20AP1.
If an IGBT module has failed, both the power board and the modules Q3 and
Q8 must be replaced. Failure of either module always subjects rectifier bridge
2BR1 to a high current surge, which substantially reduces its life. We therefore
recommend that the rectifier bridge should also be replaced if the modules
have failed. See page 46 for instructions on checking the IGBT modules.
The IGBT modules and circuit board 15AP1 must be mounted in accordance
with the instructions on page 54.
15AP1:6
Fan control
Содержание Aristo Mig 3001i
Страница 10: ...S0740 800 196 E101019 P76 Mig 3001i 10 ca41_00 ...
Страница 11: ...S0740 800 196 E101019 P76 Placement of the circuit boards Mig 3001i 11 ca41_00 ...
Страница 12: ...S0740 800 196 E101019 P76 Tig 3001i Placement of the circuit boards Tig 3001i 12 ca41_00 ...
Страница 13: ...S0740 800 196 E101019 P76 13 ca41_00 ...
Страница 23: ...S0740 800 196 E101019 P76 15AP1 Component positions 23 ca41_15_1 ...
Страница 35: ...S0740 800 196 E101019 P76 20AP1 Component positions version 1 35 ca41_20_1 ...
Страница 36: ...S0740 800 196 E101019 P76 20AP1 Component positions version 2 36 ca41_20_1 ...
Страница 47: ...S0740 800 196 E101019 P76 Power board 15AP1 measuring points 47 ca41f2pwr ...
Страница 49: ...S0740 800 196 E101019 P76 49 ca41f2pwr Secondary board 15AP2 measuring points ...
Страница 53: ...S0740 800 196 E101019 P76 Soft starting measuring points power board 15AP1 53 ca41f2soft ...
Страница 75: ...S0740 800 196 E101019 P76 75 emptypage ...