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Active Field Distributor

5/3/2012 7:14 AM	Rate (0)
Arunraje Posts: 94 Rating: (8)	Hi... Anyone tell me what is Active Field Distributor..? And when it is used... Also plz tell me the difference between PROFIBUS DP and PROFIBUS PA...
Arunraje Posts: 94 Rating: (8)
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5/3/2012 9:50 AM	Rate (0)
Eastern Posts: 557 Rating: (64)	Hello, PA field devices, e.g. measuring instruments, sensors and actuators, can be connected to the active field distributor (AFD). In conjunction with 2 DP/PA couplers FDC 157-0 the active field distributor (AFD) enables operation of ring redundancy. You can use the following field distributors in a PA segment: ● Up to 8 field distributors when exclusively using AFD ● Up to 5 field distributor with mixed use of AFD and AFDiS The total number of PA field devices on the equipotential bonding line is 31 devices and it is limited by a maximum of 60 A per spur line. See in manual http://support.automation.siemens.com/WW/view/en/47357205 difference between DP & PA:- have a look--------- /tf/WW/en/Posts/1151 Regards
Eastern Posts: 557 Rating: (64)
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This contribution was helpful to 1 thankful Users Arunraje

1/21/2013 3:43 PM	Rate (0)
alejOo Posts: 1 Rating: (0)	In a mixed connection type (AFD's and AFDis) supports a ring redundancy connection?. Please answer, is urgent. Best Regards.
alejOo Posts: 1 Rating: (0)
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1/21/2013 4:16 PM	Rate (1)
dchartier Grandmaster-Expert Joined: 9/27/2006 Last visit: 3/23/2025 Posts: 12344 Rating: (2707)	Hello alej; The attached extractwas taken from the following manual; itshould give you your answer: Ring redundancy is possible with a maximum of 5 active field distributors with mixed use of AFD and AFDis. SIMATIC Bus links DP/PA coupler, active field distributors, DP/PA Link and Y Link Hope this helps, Daniel Chartier Attachment C:\Users\chard2\Pictures\AFD_AFDis mixed Redundacy.jpg (173 Downloads)

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This contribution was helpful to 2 thankful Users alejOo Arunraje