Eternity Sales - Distributing Westermo's Industrial Communications Products

Westermo is a world leading supplier of industrial data communications products. They manufacture a wide range of industrial Ethernet switches, Ethernet extenders, 3G/HSDPA modems, PSTN modems and Serial RS-232/422/485 converters. They also produce Serial to fibre optic modems that can be used to bridge up to 80 km depending on the fibre type.

Their leading product group is in the industrial Ethernet arena, supplying basic Unmanaged Ethernet Switches, Managed Ethernet Switches, Industrial Ethernet Extenders, Industrial Routing Switches and Serial to Ethernet Converters. With their complete range of high temperature rated industrial devices, Ethernet can be run or converted to serial, fiber, 3G HSDPA, WIFI and SHDSL with their Wolverine Ethernet Extenders.

Serial RS-232/422/485 has been a driving force behind modern industrial data communication. We provide a large amount of Serial R-232/422/485 Converters, Repeaters and Isolators for harsh environmental conditions.

At Westermo, when your application requires reliability without question, regardless of the environment, they have your industrial networking needs covered.

You will notice a term frequently used with all Westermo products...galvanic isolation. What does this mean? See below...

ESI offers the most comprehensive on-line selection of Westermo products for purchase anywhere - visit our Store and see for yourself!

Don't see a Westermo product on our web site that you need? Contact ESI, we have access to Westermo's entire product line.

	Ethernet in industrial environments must be very reliable as downtime is much less tolerable in the factory than the office. Harsh environments with electrical noise and vibrations requires equipment of very high quality. Westermo offers an extensive Ethernet product offering, comprising Layer 2 and Layer 3 Ethernet switches and routers, SHDSL Ethernet Extenders. Westermo offers a comprehensive selection of SFP options for expanded Ethernet transmission. What sets Westermo's Ethernet solutions apart is WeOS, Westermo's own operating system platform for its products. ESI provides all documentation relevant to each product.
	Fibre optic modems are often used in data communication systems to bridge long distances at high data rates. Fibre optic systems are particularly immune to electromagnetic interference and therefore very suitable for harsh industrial environments. Westermo products can transmit data at up to 12 Mbit/s over distances up to 80 km depending on the fibre type. Westermo offers point to point and multidrop / ring mode Fiber modems with Profibus capabilities, RS232 capabilities and RS485 capabilities. These fiber modems are now configurable with a conprehensive selection of SFP modules for extended transmission distances and various transmission options.
	Westermo Modems are designed for industrial applications, which means that there are functions built in to them that are especially useful in industrial systems like for instance PLC connection mode and DIP switch settings. The Westermo products have a watchdog function and are galvanically isolated to give reliable communication in harsh environments.
	The Westermo Wireless products are designed to very high standards to make them incredibly reliable. Modems are available for use in both the 869 Mhz and WiFi 2,4G Hz license free bands. Modems in the 900 Mhz band is availible for the US market. Their design allows them to be used in place of copper connections for serial data transfer, on a point to point or multidrop basis, ideal when cabling will be difficult.
	Media Converters offering a conversion from one platform to another. Specifically, serial to Ethernet and Ethernet to Fiber.

Galvanic isolation is the principle of isolating functional sections of electric systems so that charge-carrying particles cannot move from one section to another, i.e. there is no electric current flowing directly from one section to the next. Energy and/or information can still be exchanged between the sections by other means, however, such as by capacitance, induction, electromagnetic waves, optical, acoustic, or mechanical means.

Galvanic isolation is used in situations where two or more electric circuits must communicate, but their grounds may be at different potentials. It is an effective method of breaking ground loops by preventing unwanted current from travelling between two units sharing a ground conductor. Galvanic isolation is also used for safety considerations, preventing accidental current from reaching the ground (the building floor) through a person's body. (Source = Wikipedia)

The answer to this question ultimately answers the next question, why would I need galvanic isolation. It would be similar to having anti-lock brakes on your vehicle. You may never use them, but when you need them, they are there. This is the same with galvanic isolation. You may never use it, but it is there if you ever need it.

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Eternity Sales, Inc.