Fieldbus Cable Specification

By sandy fulton product manager northwire inc.

Fieldbus cable specification.

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. 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. Belden cables are designed to withstand the destructive effects of temperature extremes humidity moisture dust and oil. Selecting the right cable for foundation tm fieldbus control networks what you need to know.

Fieldbus cable is rated according to a four level code a b c or d each successive letter representing a cable of lower quality6. A complex automated industrial system is typically structured in hierarchical levels as a distributed control system dcs. 29 jun 12 fieldbus message specification. A terminator t is required at each end of the fieldbus cable to avoid distorting signals and allow the twisted pair cable to carry digital signals.

Power to the devices is provided by a power supply through a power. 3 oct 08 fieldbus access sublayer. 6 jan 11 device coupler test specification. Fieldbus profiles are standardized by the international electrotechnical commission iec as iec 61784 61158.

The following table gives minimum specifications for each ff cable type. Ff 844 is the new fieldbus foundation cable compliance specification. All trunk cables and spur cables must follow specification for instrument cabling iec 61158 2. Bear in mind that the maximum length given for each cable type is the total length.

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. 6 apr 04 h1 cable test specification. In this hierarchy the upper levels for production.

Our ff cable features excellent electrical charateristics low capacitance for long runs rohs compliant and ce marked. 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. Ff 844 h1 and iec 61158 2 type a. Foundationtm fieldbus itc and pltc listed cables explained.

8 oct 03 h1 system management.