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  • Writer's pictureArt Yee

Having VFD issues? Let's talk about it.

Anyone having problems with upgrading an ACH550 to ACH580 with an RBCU? Experiencing any firmware incompatibility issues?

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Art Yee
Art Yee
May 19

We are experiencing a firmware conflict on a 75hp ACH550 to ACH580 with RBCU. Anyone experiencing this issue. ABB Tech Support suggest replacing with a new ACH580 RBCU and contactors.

What did you do to get this resolved?


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