Protect Ethernet-APL from overvoltage
Do you already have the new standard in the process industry, or are you planning to implement it? To make the most of what Ethernet-APL has to offer and ensure that the high-speed connection from the field level to the cloud works reliably in the long term, measures to protect information technology are essential.
How to protect the availability of your system and save money.
Overvoltages can be caused by nearby lightning strikes or switching operations and can destroy or damage system components, resulting in expensive equipment failures and increased maintenance costs. So you need an effective way to protect your process plant while complying with all the regulations – we explain where and which surge protective devices are required.
Combined protection from DEHN
Ethernet-APL – the future of process automation
Ethernet Advanced Physical Layer (APL) refers to the physical layer for transmitting Ethernet protocols in hazardous areas. It uses a two-wire technology called single pair Ethernet (SPE), based on the 10BASE-TL1 (IEEE 802.3cg) standard. Concepts such as 2-WISE for Ethernet-APL and FISCO for conventional fieldbus systems ensure intrinsic safety.
Ethernet-APL enables end-to-end connectivity from field-level sensors and actuators to the management-level cloud, transmitting data more than 300 times faster than existing fieldbus solutions – and will increasingly replace them.
What's new in Ethernet-APL
- High-speed communication: 10 Mbit/s data transmission over copper cables
- Extended range: up to 1,000m length for trunk cables and 200m for spur cables
- Power over Data Lines (PoDL): power and data can be transmitted on the same 2-wire cable
- Explosion protection: meets the 2-WISE requirements for intrinsically safe Ethernet (2-wire intrinsically safe Ethernet according to IEC TS 60079-47)
- Uniform platform: continuous connection from the cloud to the field devices
- Digital data transmission via field switch: simplifies planning, installation and maintenance
Our protection solution at a glance
Example signal circuit for a spur segment: BLITZDUCTORconnect devices are installed at the inputs to protect the spur ports. The field devices are each secured by the screw-in DEHNpipe. Trunk lines to the field switch must be connected to surge protection devices (SPDs) from our Red/Line (power supply systems) or Yellow/Line (information technology) ranges, depending on the type of line. DEHNpatch protects the Ethernet cables at the inputs to the field switch.
Protection to suit the port profile specifications
Get an overview of the port profile specifications for Ethernet-APL and how our combined protection solution meets them.
