Connecting 20 Linking Device to ABB AC800F


Thread Starter


Dear friends

When i tried to connect more than 20 couples (1 main & 1 redundant) of LD 800HSE (Linking Device) to ABB AC800F system with 7 controllers, system on "HARDWARE" online check could not detect the status of LDs after 20th, and detect them as "UNKNOWN" but actually these LDs are "RUNNING".

Your help to solve problem would be appreciated.