FF Fieldbus cable

Scope of application

According to the definition of IEC61158 standard of International Electrotechnical Commission, fieldbus refers to the digital, serial and multipoint communication data bus between the field device installed in the manufacturing process area and the automatic control device in the control room. There are many kinds of communication media connecting field equipment. Each communication media has a great impact on such aspects as data transmission rate, communication distance, reliability of data transmission, cost and ease of installation and maintenance due to their different performance characteristics. The communication media of the field bus system mainly include bus cables, microwave and infrared rays, among which the bus cables are commonly used and stable.

This product is applicable to the connecting line between the process automation control and measuring equipment in the field environment of the factory, to build an open and decentralized digital field bus communication system. It is suitable for installation in the cable bridge (bracket) in the room C, outdoor, humid or dry environment and is convenient for use in the pipeline.

Production process

Non armored type: three layer coextruded hair foam skin foam skin FPE insulation (high density foam), double-layer shielded tin plated TC conductor, flame retardant orange UV protection outer sheath, twisted pair a and type bus cable;

Armored type: three-layer coextruded hair foam skin foam skin FPE insulation (high-density foam), double-layer shielded tinned TC conductor, double-layer sheath (flame retardant and UV protection), galvanized steel wire wound or braided armor, twisted pair type a bus cable

Electrical indicators

1. Working capacitance (1kHz): core to core ≤ 60pf / m, core to shield ≤ 110pf / M

2. Unbalanced capacitance to shield (1kHz): unbalanced capacitance to shield ≤ 2000pf / km

3. Characteristic impedance (31.25khz) characteristic impedance 100 ± 20 Ω

4. Attenuation (20 ℃, 39khz): the attenuation value of cable signal transmission is 3.0db/km

5. Transmission distance: the physical foaming A-type bus cable is large, and the transmission distance is 1900 meters

Product advantages

The overall design of A-type FF field bus cable has the characteristics of flame retardant, low attenuation, long transmission distance, excellent anti-interference performance, flexibility and easy to use, which fully meets the requirements of iec1158 standard for field bus cable design specifications.