Product category:
Plant- and Machine-Wide Communications
News Release from: Schweitzer Engineering Laboratories | Subject: SEL-2814
Edited by the Engineeringtalk Editorial
Team on 08 September 2005
Fibre links provide safe communications
Fibre-optic links and SEL fibre-optic transceivers eliminate the safety hazards of ground-potential rise and of copper communications cabling in electrical substations.
Schweitzer Engineering Laboratories has a new fibre-optic transceiver, the SEL-2814 During faults or switching, when reliable communications are the most important, copper lines are exposed to electromagnetic interference
This article was originally published on Engineeringtalk on 15 Jul 2005 at 8.00am (UK)
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Fibre-optic links and SEL fibre-optic transceivers eliminate the safety hazards of ground-potential rise and of copper communications cabling in electrical substations.
The SEL-2814 extends the benefits of SEL fibre-optic solutions to even more applications.
One pair of SEL-2814 transceivers provides a full-duplex EIA232 data link plus a hardware flow-control line in each direction.
Applications of hardware flow-control include preventing input-buffer overflows, controlling the transmitter of a data radio or modem for multidrop operations, and sensing equipment status.
The SEL-2814 uses ST connectors for links operating up to 115Kbit/s, for distances up to 5km with standard 62.5um optical fibre.
It is port-powered through the EIA232 interface with voltages as low as 3.3V, for compatibility with modern laptop computer ports.
An optional external power supply allows communications even with devices that do not provide port power.
The SEL-2814 is DCE/DTE switch selectable, eliminating the need for adapters, settings or jumpers.
It also provides the flexibility to select the fibre that bests fits the design requirements and accepts fibre diameters ranging from 50-200um.
Additionally, SEL offers high-strength, silica-based SEL-C805 200 micron fibre-optic terminated cables to your length specification and several available standard lengths of SEL-C807 62.5 micron fibre-optic jumpers.
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