Networkers

September 2008 Fieldbus & Industrial Networking

The new WAGO 852 Series of products, ranging from simple Ethernet switches to configurable Ethernet communication all-rounders, provide comprehensive and scalable network infrastructure solutions.

The 852 Series includes an Ethernet switch featuring five or eight 10/100BaseTX ports as well as an eight-port switch equipped with two additional ports for SFP (small form pluggable) modules used to connect fibre-optic cables. A configurable Ethernet switch featuring seven 10/100BaseTX ports and two SFP 100Base-FX ports completes the 852 Series. Retro-fit modules, including interfaces for different optical fibres, are available for both versions featuring SFP ports.

All modules are designed for industrial applications. They have robust enclosures, redundant voltage supplies ranging from 9 to 48 V and function monitoring with relay. Alarm functions are enabled via a DIP switch. Features such as the auto-negotiation and auto-MDI/MDIX (crossover) on all 10/100BaseTX ports, as well as a store-and-forward switching mode are available. All devices are fully compliant with IEEE802.3 and 802.3u standards.

The configurable version offers various settings such as Xpress Ring. This allows the redundant ring to be configured, which enables a reconfiguration in less than 50 ms in the event of a primary link failure. Furthermore, failures can be reported via e-mail.

For more information contact Chris Huxham, Shorrock Automation, +27 (0)12 345 4449, [email protected], www.shorrock.co.za

Further reading:

Introduction to Part 2 loop signatures and process transfer functions
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Siemens sets new standards in drive technology
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Siemens is setting new standards in industrial drive technology with the launch of its new high-performance drive system, Sinamics S220. This offers a seamless and innovative drive system with comprehensive simulation and analysis capabilities and advanced connectivity features that enable full integration into digital work processes.

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PC-based control in the plastics industry
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Nissei Plastic, an injection moulding machine manufacturer based in Japan is implementing a worldwide tend towards open automation systems from experienced specialists using PC and EtherCAT-based control technology from Beckhoff.

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Loop Signature 31: Non-linearity in control loops (Part 2)
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This article is a continuation of Loop Signature 30 published in the last issue in this series, exploring reasons for non-linearities which may be encountered in feedback control loops

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PC-based control optimises robotic parts handling on plastics machinery
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Case History 200: The final case history – desuperheater control problem.
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For this final article I have chosen to relate a problem that existed in a desuperheater temperature control on a boiler in a petrochemical refinery.

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PC-based control technology in additive manufacturing
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As an open control platform, PC-based control supports different engineering approaches, including low-code programming. The machine builder, Additive Industries uses this to create the code for the TwinCAT runtime of its 3D printers.

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By representing world-leading brands and focusing on fully integrated, certified systems, HMA South Africa is positioning itself as a trusted partner in fire detection, suppression and explosion-proof safety solutions across the continent.

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Integrating fire alarm systems into building management systems
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Fire alarm systems work independently of the building automation system. Schrack Seconet has developed a flexible gateway using ultra-compact industrial PCs and TwinCAT from Beckhoff, which can be used to flexibly convert a customer-specific communication protocol to a wide range of transmission standards.

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