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| Single Pair Ethernet Cable |
The WHY
There are so many bus cables, so why have one more technology? Here you
have to go back a little into the history of the eighties. It was then that the
need for bus technology arose in the car. Until that time, signals were transmitted
in the car with relays and switches. New functions in the car required data
transmission, so a group of companies around Bosch developed the revolutionary
CAN bus. Data transmission with this bus is safe, robust and proven. Today,
this system is reaching its limits because our vehicles require significantly
more data volume. With the demand for new vehicles, such as autonomous driving,
the birth of Single Pair Ethernet was inevitable, as it were. The requirements
for the new bus system were the same as in the eighties: robust and safe.
However, a high data volume was now also required. The industry also wants to
take advantage of these positive attributes and the system is being adopted by
leading.
The HOW
How to improve this standard while keeping it clear enough that millions of users can reliably combine different products? This requires a network of companies that define standards. This has been accomplished in the SPE Industrial Partner Network. Companies from different areas, work together.
Network specialists for products such as IC’s, magnetics, cables, connectors and measurement technology. They all carry out research and development in their field in order to contribute knowledge towards SPE. We at igus are doing our part of the pioneering work in the field of durable cables for movement.
The WHAT
What should the additional advantage be? There are two basic requirements that need to be met. It must become cheaper than today’s four-pair Ethernet solution, as more bus systems are to be used for machine data. At the same time, one must not lose sight of the overall costs. But the biggest demand is the reduction of the installation space.
Here, today’s CAT5e technology, with its large connector solutions and thick cables of around 8mm, is not well suited to accommodate bus systems in every area of the machine. With SPE there is a reduction of 25% in overall diameter for cables and well over 35% for connectors. This clearly defines the great advantage of the system: lower costs and less installation space.
It becomes possible to bring the bus technology even to the smallest sensor in any machine. This is the basis for Industry 4.0 in its purest form.
The WHEN
Sounds great, when will I be able to use SPE? The main hurdles have been overcome. The rules were clearly referenced in IEEE802.3. IEC 11801 and TIA TR42 have technically confirmed the standard of the Industrial Partner Network with its partners. This means that control system manufacturers and sensor manufacturers can now build on this safety and integrate the technology into new applications. It is expected that the firs devices with the technology will be available on the market by the end of the year.
We at igus want to do our part of the groundwork for this new technology and developed CFBUS.PUR.042 for Single pair Ethernet. CFBUS.PUR.042 has the transmission of Ethernet (1000Base-T1) via only two pair of copper wires and enables both data transmission via Ethernet and simultaneous power supply (PoDL). This Cable leads to a reduction of the diameter by approx. 25% compared to an ordinary Ethernet cable.
The oil-resistant and flame-retardant CFBUS.PUR.042 has been extensively tested in the 3,800 square metre test laboratory. As with all of the over 1,354 cables in the extensive product range, for the online predictable Single Pair Ethernet cable, the customer will also receive a guarantee of 10 million double strokes or 36 months.
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