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Logo! 8 – The solution for small power supply automation tasks that have big transformative results

Published: 4 December 2017 - Sarah Mead

For small automation tasks where lean but reliable DC power supply is essential for efficient plant operation, Logo!Power can help. The portfolio of Sitop power supply units and add-on modules can protect companies in any industry in the world from plant downtime and production losses. By launching the fourth generation of Logo!Power with Logo! 8 Siemens can offer two additional power supply devices as well as additional functionalities and new scope for application. This series of compact devices now comes with a narrower width reduced by 18 millimetres, allowing more flexible mounting, for instance on DIN rails in distribution boards, or directly on walls or ceilings. They can be mounted gaplessly side-by-side with other devices, for instance to supply power to adjacent Logo! logic modules. Logo! 8 demonstrates very high efficiency over the entire performance range with efficiency of up to 90n percent over the entire load range, and no-load losses of less than 0.3 watts (W).

The integrated current monitor provides a new level of convenience during commissioning and servicing. The current output is read out in real-time as a voltage value using a measuring point. Simple measurement using a voltmeter means that the disconnection of cables by the user for conventional current measurement is no longer required, and the system continues to be supplied with direct voltage without interruption. Users also benefit from a new downward extended operating temperature range of -25° to +70° Celsius, and scope for worldwide application with a wide range of certifications.

The innovated Logo!Power series with its housing widths of 18 to 72 millimetres is the compact successor to the previous 3rd generation. The new variants with 24 V/0.6 A and 12 V/0.9 A extend the portfolio for very small outputs and come in a width of just one 18 mm pitch. A total of eleven devices with regulated and adjustable output voltages of five, twelve, 15 and 24 volts (V) supply an output of up to 100 W. Their wide-range input allows these power supply devices to be operated at all single-phase supply networks with 110 to 240 V AC nominal voltage and even at direct voltage networks with 110 to 300 V DC without the need to switch over. For

capacitive loads on power supply start-up, a power reserve of 150 percent is available, and the constant current behaviour compensates for overloads during operation. A diagnostic LED signal “DC O.K.” indicates the status of the power supply device.

Fields of application for Logo!Power in industrial automation include simple packaging machines, garbage presses, conveyor belts, sorting systems, infeed units and sterilisers. In the field of building technology, the power supply devices can be used for lighting controls, such as panic circuits, central and random circuits, heating control system extensions, door and gate controls, and access restriction. Logo!Power devices are also found in pumping stations, special-purpose vehicles, saunas, swimming pools and automatic livestock feeding devices.

In particular Logo!Power has powered the  transformation of operational processes in brewing. The processes in Brewery Fermentation require constant caretaking, over several days. As businesses grow this can often become a constant source of disturbance at time during the day or night. Managing this process correctly also has a direct impact on the quality and repeatability of the end product, not always an easy task to delegate.

Automating this part of the process has never been easier or more cost effective, benefiting from tight, linear temperature holding, not an oscillating temperate – keeping the yeast happy. Remote / Internet access enables visibility and control fermentation wherever you are and with any smart device that can connect to the Internet. You can also automatically record each fermentation cycle and if required added into this record the values from any SG measurements taken (this assumes manual samples and testing). This solution starts with the 8 controlling loops (the number of temperature measuring points). Programming the solution has been simplified and can also be supported remotely when the device can be connected to the Internet. This application is designed to grow with you. You’ll never need to ‘throw away’ and start again. The technology comes to you from Siemens with reassurance and confidence that this investment will continue to be supported.

www.siemens.com/industrial-iot

Industry Connections: Siemens A&D


 
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