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Control & Automation

Multipoint Multiplexer for Process Applications

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Together with the Radioline I/O modules of the wireless system, the new RS-485 bus coupler from Phoenix Contact provides you with a multiplexer system specifically for process use.

Addressing of the front module and easy I/O mapping of the extension modules is carried out quickly and easily, as is usual with the Radioline wireless system, by means of the thumbwheel on the front. This allows distribution of I/O signals in an RS-485 bus system easily, without any programming and software configuration.

In addition to operation via a two-wire RS-485 bus line with up to 99 stations, the new RS-485 stations can also expand the Radioline wireless system so that cross-media mapping is possible.

Alternatively, it is possible to operate the stations in stand-alone mode at a Modbus/RTU master and therefore directly connected to a controller. For robust use in industrial continuous operation, the I/O extension modules from the Radioline product range are distinguished by electrical channel-to-channel isolation and extended environmental conditions of -40°C to +70°C. In addition, the system offers a comprehensive approval package with ATEX, IECEx, and UL approvals.

Phoenix Contact has expanded its Trusted Wireless 2.0 range of Radioline wireless communication products with an 868-MHz wireless module. This module utilises the 868-MHz frequency, which is publicly available and license-free in Europe, at a maximum transmission power of 500 mW, facilitating easy communication of I/O signals and serial data. This is particularly useful for outdoor applications such as in process applications or power supply networks.

The module represents a very simple and reliable solution for non-time-critical applications where signals need to be transmitted over long distances of up to 20 kilometers.

A special advantage of this wireless module stems from the adjustable data rate of its wireless interface in the range of 1.2 to 120 kbps, which increases the reception sensitivity.

A low data rate can span a significantly longer distance than high data rates. As a result of the individual adaptation, users can therefore make the optimum settings for their particular application and the required range.

The Radioline wireless system’s I/O mapping distributes signals across the system without requiring any prior programming. All it takes is a turn of the knurled knob to assign the inputs and outputs. Each wireless module can be modularly expanded by up to 32 expansion modules.

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