Products| About ControlNet ControlNet is a high-speed, serial communication system that provides for a time-critical exchange of information between complex control devices such as programmable logic controllers (PLCs), human machine interfaces (HMIs) and PC-based controllers. ControlNet operates in a totally deterministic and predictable manner, allowing the various devices and controllers on the network to communicate at a precise and pre-determined point in time. ControlNet functional characteristics A ControlNet network can support up to 48 nodes at a bus speed of 5Mbps on a total end-to-end distance of 250m. The bus topology can be star, tree, bus, or any combination of the three. The time delay throughout the system and a maximum end-to-end distance of 30+ km, represent the only limiting factors on the number of repeaters that can be used. Although ControlNet uses a larger bandwidth than other automation and control networks, it does not function as a traditional "broadband" network. In a ControlNet system, the network devices and controllers are expected to communicate/operate at a predetermined point in time and for a specific length of time. Broadband communication networks differ in that their communication efforts take place when the network has room for the communication. Because ControlNet is deterministic, it is robust and capable enough for industrial time-critical control applications. This core philosophy of the system also requires that signal transmission be uncorrupted and high speed. Therefore, choosing an approved, tested and conformant Belden Low-Loss RG-6 cable made especially for ControlNet systems is required for maximum system performance. The Belden cables for ControlNet To ensure that Belden's ControlBus cables meet the high-speed, time-critical requirements for the operation of ControlNet factory-floor systems, these Low-Loss RG-6/U Type coaxes incorporate a Duobond Quad Shield for maximum signal integrity and run length. All products are sweep tested across a wide frequency range, ensuring that Return Loss, Impedance and other critical performance features, meet the requirements of the ControlNet physical layer specification. ControlBus cables can be supplied with a CPE jacket and/or aluminum or steel interlocked armoring. Belden also manufactures variations of the cable for different applications, identification needs, and environments (including Product #183092A which features continuously corrugated aluminum armoring for added protection in harsh environments). | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
Specifications (3092A) NEC CL2R CMR C(UL) CMR Weight：31 lbs./1,000ft. Conductor: # 18 AWG solid copper clad steel conductor (CCS) Insulation: special foamed polyethylene Nominal OD：0.302" (7.67mm) Shield: Duobond IV quad shield Sheath: Black Standard PVC, you can choose blue safety jacket. Characteristic impedance：75 ohms Scan Test from 5 to 450 MHz Nominal velocity of propagation： 82% Nominal capacitance：16 pF/ft. Attenuation: See the table below |
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| Fire Safety (3093A) Note: In addition to the following specifications, other specifications are the same as above NEC：CMP Insulation：foamed fluoropolymer heat Nominal OD：0.273" (6.93mm) Sheath: Grey standard temperature fluoropolymer solids, you can also select the blue safety jacket. Attenuation: See the table below. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Other optional structure A variety of colors for easy identification Belclad armored steel or aluminum Steel or aluminum interlocked armor Type 3092F continuous flexing *ControlNet is a trademark of ControlNet International. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
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