Pol Chen had a question that I responded and wanted to share:
Dear Jim,
I saw your blog and found it helpful to connect me to DeltaV expert inside Emerson. I have a question about type of wire which is used to connect a DeltaV M-Series Redundant H1 Fieldbus I/O Interface Cards(Two-wide Termination Block with Connections for 2 H1 Segments part number: VE4037P0) to Motherboard for FF Power Hub for 2 redundant H1-Segments (MB-FB-2R @ P+F). Actually this is a host connection inside cabinet between FF Module Termination Block and FF Motherboard.
Is this normal wire (like wire is used for 4~20mA signals) or specific fieldbus wire/cable should be used for this connection? I attached the sketch for better understanding about my question.
Regards,
Pol
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Jim, there is a recommended fF wiring. The fF foundation has the specification. Below is the link. Look at page 6
http://www.fieldbus.org/images/stories/enduserresources/technicalreferences/documents/wiringinstallationguide.pdf
I believe our DeltaV book online reference the cable we tested with and I remember it was Beldin which I used all the time when I was working in the plant.
Link:
http://www.belden.com/products/industrialcable/data-bus/foundation-fieldbus.cfm
Turk is another good option:
http://www.logic-control.com/datasheets/26/Network%20and%20Interfaces/B3404_FF_Troubleshooting_Guide.pdf
I hope this help.