Alexander weiss business unit industrial projects leoni kerpen gmbh foundation fieldbus cable specification ff 844.
Foundation fieldbus cable specification.
It is targeted for applications using basic and advanced regulatory control and for much of the discrete control associated with.
Foundationtm fieldbus itc and pltc listed cables explained.
Foundation fieldbus technical specifications.
A complex automated industrial system is typically structured in hierarchical levels as a distributed control system dcs.
Fieldbus cable is rated according to a four level code a b c or d each successive letter representing a cable of lower quality6.
With the high cost of downtime in industrial applications it pays to invest in cables like belden s fieldbus to ensure maximum protection and performance.
All trunk cables and spur cables must follow specification for instrument cabling iec 61158 2.
Detailed implementation requirements beyond the standard are available from the fieldbus foundation an industry consortium that promotes fieldbus technology.
The following table gives minimum specifications for each ff cable type.
Ff 844 is the new fieldbus foundation cable compliance specification.
1 2009 fieldbus foundation dr.
Cable specification foundation fieldbus ff 844 h1 cable design based on en 50288 7 bs 5308 part 1 iec 60332 electrical properties.
Fieldbus is the name of a family of industrial computer networks used for real time distributed control.
The fieldcomm group is the developer owner and standards organization for the f oundation fieldbus technology establishing and controlling new developments and enhancements that support the needs of the process automation industry.
It is an open architecture developed and administered by fieldcomm group.
Fieldcomm group manages the f oundation fieldbus technical specifications and other related documents and provides.
Ff 844 includes the electrical requirements of isa 50 02 and iec 61158 but it also contains some additional requirements which help you know your cable is the right cable for use in foundation fieldbus control networks.
Fieldbus is defined in iec standard 61158 2.
These more detailed specifications are needed so that devices made by different manufacturers are interoperable in a control system.
Foundation fieldbus cable length fieldbus segment is limited to a maximum of 1900 meters this total segment length is computed by adding the length of the main trunk line and all the spurs that extend from it.
Belden cables are designed to withstand the destructive effects of temperature extremes humidity moisture dust and oil.
Bear in mind that the maximum length given for each cable type is the total length.
Our ff cable features excellent electrical charateristics low capacitance for long runs rohs compliant and ce marked.
In this hierarchy the upper levels for production.
