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A2078 TEMP DIFFERENCE alarm in ABB ACS850 Drive

 
ABB ACS850 Drive
Last Post by click2electro 3 years ago
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 click2electro
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Dec 20, 2021 9:15 am
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How can resolve problem A2078 TEMP DIFFERENCE alarm in ABB ACS850 Drive ?

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2078 abb acs850
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Posts: 18330
 click2electro
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Topic starter
Dec 20, 2021 9:15 am
(@click2electro)
Member
Joined: 4 years ago

Cause : High temperature difference between the IGBTs of different phases.

Check cooling and the fan.

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