New Fieldbus wiring hubs give 25% capacity boost
Megablocks minimize the amount of hand wiring required in the field and allow individual fieldbus devices to be added to and removed from the segment without disrupting network communication. Most modern fieldbus projects use a chickenfoot topology accommodating 10 field devices and 2 spares thus making the 12-drop Megablock ideal for the majority of installations. The range provides versions for installation in all hazardous areas with certification that covers all hazardous-area protection techniques. Multiple Megablocks can be simply wired together to allow larger segments to be constructed. The built-in SpurGuard option provides short circuit protection of the connected spur thus protecting the segment from failure due to devices failing short-circuit, shorting of spurs during maintenance or ingress of water in a field device.
The 2 and 4-drop Megablocks are ideal for the bus configured with spurs topology whereas the 12-drop version with integral terminators is ideal for star- or chickenfoot-topologies where several transmitters are connected at a single field junction box. Occupying approximately the same junction box space as conventional 4-20 mA wiring, Megablocks are ideal for both retrofit and greenfield installations and although Megablocks provide over-voltage protection, for maximum protection it is recommended that FP32 and TP32 Surge Protection devices are incorporated in the network design.
The MTL Instruments Group is recognized as a world leader in the development and supply of Intrinsic Safety, Open Process Control components and Surge Protection products aimed at the process control and telecommunications industries. Many of the world's safety-critical processes are monitored, controlled or protected by MTL products and the Group is distinguished by its global network of sales and support centers and by its acknowledged position as a thought leader in this high technology marketplace.
MTL has recently developed a range of open process control components, which can be snapped together by third party companies to create sophisticated control solutions, tailored to their customer needs. Based on the MTL8000 Process IO, these components can be remote mounted into harsh and hazardous areas, unlocking the costs normally associated with control rooms. This has involved the combination of the Group's three core technologies - Intrinsic Safety, Surge Protection and Open Control Platforms.
MTL's long established Hazardous Area Business Unit has built up an enviable reputation as a leading global provider of Intrinsic Safety interfaces and systems for use in process control applications.
The Surge Business unit offers solutions for mission critical applications in the Process, Data Network and Telecommunications markets, which may be at risk of damage from lightning or other high voltage surges.
About Relcom Inc.
Relcom Inc. specializes in the design and manufacture of wiring components and test equipment for the physical layer of Foundation Fieldbus and Carrier-band industrial local area networks (LAN). From their headquarters near Portland, Oregon, USA, they have provided taps, repeaters, network monitors, and test equipment to demanding users and leading control system manufacturers since 1985.
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