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you can try to modify the set of parameter 31.08 - Activates/deactivates the automatic reset for the fault LINE CONV (FF51) (fault on line side converter).
Hope this help you
Sir if we enable auto reset function, if there is any actual fault occures how we will identify
The auto reset is only for this case of fault. In case of different fault you have another fault indication number
sir we have some more ACS800 VSd's which is tripping on the same fault FF51, but that occures during running. If reset the drive it will run for may be one week or more and it will trip again. What is the actual cause of this fault-FF51.
The FF51 failure may depend on more than one cause. For example, what is the deceleration value set on the drive? Do you have inertial load remaining rotating after you stop the drive?
sir, today we managed to fix the problem. we found some parameters in ID2 was not updated after updating the backup software.Thanks for the suggestions.