Profibus Line Redundancy Issue in FREELANCE

We have Freelance 2013 SP1 and redundant AC902F controllers and redundant CI930F .. Whenever I enable Profibus Line Redundancy both CI840 , CI930F and redundant controller start switch over continuously. Without line Redundancy System working fine through Line A. To ensure proper cabling of Line B I shifted line B cable to Line A and it's working fine.. Even I tried by configuration of Stand Alone controller also but results same.As I enable Profibus Line Redundancy Both Controller and CI start switching.
-Controller AC902F and CI930F Firmware updated already. ..
.. Please suggest something to resolve this issue. .. Thanks in advance. ..

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U3689 Rank: 505

Asked 3 years ago

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Hello,

I suspect on profibus lines cabling and termination, else redundant controller will not toggle...

Check this thread regarding cabling and terminations @ http://www402.abbext.com/Can-configure-profibus-line-redundancy-AC900F-q1691891
.aspx

Also check answer from manisampath in this thread linked herewith @

http://www402.abbext.com/Redundant-Controller-Ac900f-No-Secondary-q1352957.aspx

Also didn't get you on "Even I tried by configuration of Stand Alone controller also but results same.As I enable Profibus Line Redundancy Both Controller and CI start switching" If it's stand alone controller how it can switch ? or do you mean redundant single controller ?

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