INTERCONNECTION T1 Industrial from HARTING drives
Single Pair Ethernet revolution Ethernet is being deployed across more and more areas of industry and is the connecting element for both IT and OT (Operational Technology). Single Pair Ethernet (SPE) ensures the cost-effective use of ethernet in every aspect of industrial automation.
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ingle Pair Ethernet uses one pair of wires to transmit data at speeds up to 1GBit/s, which makes SPE ideal for industrial applications in the age of Industry 4.0 and IIoT. Previously, industrial Ethernet could only reach the control level before it needed to switch to BUS systems via gateways. Single Pair Ethernet (SPE), delivered via HARTING’s T1 Industrial interface, allows field devices to connect directly to the Ethernet network. To discover more about the T1 and SPE, we spoke to Matthias Fritsche, HARTING’s Ethernet communications expert and Marian Duemke, Global Product Manager.
Can you please briefly summarise the idea behind Single Pair Ethernet?
Matthias Fritsche: SPE is about conveying the Ethernet protocol with another physical layer using only a single pair of wires. Just as one is currently using four-pair copper cables, fibre-optic cables or radio today, SPE is another form of physical layer, designed for communication down to the field level.
What is the benefit of SPE for the user?
Marian Duemke: The idea behind SPE is to bring Ethernet to the field level, where it isn’t available yet. SPE means Ethernet interfaces can now be integrated onto simple sensors, cameras, reading/ID devices or similar miniaturised equipment. As a result, there is immense potential in the T1, which can supply both data and power across a single pair of wires in an IEC 63171-6 industrial interface.
Which other markets or industries could benefit from SPE?
MD: Within transportation, an Ethernet cable currently weighs approximately 4.6kg per
100 metres, whereas an SPE cable only 3kg. Over an average train carriage lifetime, each kilogram of saved weight delivers fiscal savings of around £12,300. If you consider how many carriages the average train has and how many miles of cable are found in the train, it soon becomes apparent how great the savings potentials are.
How was the HARTING T1 Industrial connector developed?
MF: For the concept, we examined the trends of recent decades and what the ideal plug connector should look like. To do this, we looked at the pain points of the RJ45. We decided on a pin and socket system, as these are already established for many industrial connectors. We also enabled a safe interlock so that shocks and vibrations do not interrupt the data transmission.
Could you tell us more about the SPE Industrial Partner Network?
MD: The SPE Industrial Partner Network is an association of companies that are working
28 JULY/AUGUST 2024 | ELECTRONICS FOR ENGINEERS
together to promote Single Pair Ethernet technology as the basis for the IIoT. The aim is to offer an SPE ecosystem by not only pooling the knowledge of infrastructure providers, but also by bringing people together on the device side.
What does the future look like for SPE?
MF: Companies are starting to understand its benefits and are working on projects already. This has shown us that we are on the right track and that people understand that this is not just some kind of new Ethernet interface. It is a completely new world that harbours an incredibly great potential.
To learn more about the HARTING T1 and SPE, please visit:
https://www.harting.com/en-GB/single- pair-ethernet
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