Product category:
Plant- and Machine-Wide Communications
News Release from: MAC Solutions (UK) | Subject: JetNet 4706
Edited by the Engineeringtalk Editorial
Team on 06 July 2007
Power over Ethernet switch reaches
remote areas
The JetNet 4706 is an industrial managed, dual-mode PoE power sourcing switch that is compact, lightweight, corrosion-proof and heat resistant.
Power over Ethernet (PoE) technology brings power, as well as data transfer, to devices via standard twisted-pair Ethernet cabling in a network In effect, PoE provides a new standards-based method for power sourcing equipment to provide power to a wide variety of powered devices (PDs) in areas where it is physically or financially prohibitive to offer AC power
This article was originally published on Engineeringtalk on 7 Jul 2008 at 8.00am (UK)
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The cost savings and reliability improvements associated with not having to install and maintain power wiring in addition to Ethernet cabling, especially in remote locations, provide the incentive for many industrial, utility and infrastructure/buildings contractors to immediately evaluate this technology.
Korenix, an emerging manufacturer of Ethernet connectivity devices based in Taiwan, has just launched a new range of innovative, reliable, cost-effective PoE devices, available through UK distributor MAC Solutions UK.
The JetNet 4706 is an industrial managed, dual-mode PoE power sourcing switch.
The device is a six-port Fast Ethernet Industrial Managed Switch, with four 10/100TX ports (PoE injectors) and two 10/100TX uplink ports and dual mode 24V and 48V DC power source capability.
JetNet 4706 complies with IEEE802.3af and the pre-standard for the PoE High Power IEEE802.3at.
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This Power over Ethernet standard can now provide up to 30W PoE high power.
It caters for both standard and nonstandard power source systems.
It is equipped with a dual-mode PoE power mechanism, for 24V or 48V DC, which means the device can detect different input power voltages, enabling it to automatically perform power device detection, classification, powering and disconnection processes.
Because of its dual mode capability, the JetNet 4706 is ideal for applications where there is no access to a 48V DC power source.
This means adoption is likely to be very high in the transportation (vehicle, aviation and other public transport) sectors where access to a 24V DC power supply is standard.
The PoE standard, which was introduced back in June 2003, enables users to power devices over Ethernet cabling.
It was originally developed to provide power, as well as networking capability, in areas where the cost of providing - or the physical impossibility of deploying - electrical wiring limited its deployment potential.
As such, PoE has contributed to growth in the VoIP and wireless market because it simplifies the RF survey task.
Access points can be easily moved because the requirement of locally accessible AC power is removed.
Although it took almost a decade for Enterprise-based Ethernet technologies to be adapted for use in industrial applications, PoE, because of its tremendous technical and business advantages, is taking considerably less time.
With the introduction of PoE, industrial Ethernet suppliers - and end users - have a technology for heavy-duty environments such as utility substations; transportation systems, including airports, buses and trains; factory facilities and warehouses; mines and quarries; infrastructure and building management systems; access and security control applications.
In large industrial plants, where configurations change on a frequent basis, the ability to decouple expensive electrical rewiring from the placement of PDs (powered devices) is highly advantageous.
In an environment where budgets are tight and demand for increased productivity is constant, the simplicity of PoE makes it a strong candidate for high acceptance in system upgrades.
With both PoE-enabled industrial switches and PDs coming onto the market, MAC Solutions predicts rapid adoption, as both vendors and industrial users recognise the cost and reliability benefits, as well as the inherent installation convenience.
Tim Ricketts, General Manager at M.A.C Solutions comments: "Korenix has developed a world class series of products".
"With the introduction of the JetNet 4706, Korenix has yet again demonstrated the ability to develop a truly innovative world-first product, which consequently won a much-coveted 'Computex Taipei 2007' product award in Taiwan recently".
Designed in a one-piece rugged IP31 aluminium housing for harsh industrial and transportation/infrastructure applications, the JetNet 4706 is also compact, lightweight, corrosion-proof and heat resistant, with operating temperatures from - 10C up to 70C and 10% to 90% humidity.
Terminal block and ventilation holes on the bottom of the device reduce damage due to ingress of dust and moisture.
The JetNet 4706 also supports a comprehensive range of interfaces, including SNMP v1/v2/v3, RMON, a web interface, Telnet, and a Cisco-like CLI via RS232 console.
The additional two 100Mbit/s fibre optic ports on the device enable users to extend network infrastructure using Korenix' patented Rapid Super Ring (RSR) functionality, for connection as a redundant Ethernet ring architecture.
The RSR technology provides network redundancy with less than 30ms recovery time when the main path is disconnected.
To integrate with higher-level switches, the JetNet 4706 uses Dual Homing II functionality, which merges RSR and RSTP (Korenix' Rapid Spanning Tree Protocol) in a single redundant port.
The user can save power using the JetNet 4706's PD powering control functionality.
The device operates similar to UPS (uninterruptible power supply) scheduling control for PoE power delivery.
There is user-friendly scheduling control, which operates on an hourly basis.
Each port on the device can be configured with different rules, helping to save power and meet the user's economic resource management requirements.
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