Lightning protection guide by OBO

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Last revision 2020

Vydal: OBO BETTERMANN s. r. o. Autor: OBO BETTERMANN

Strana 250 z 288

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OBO also offers host pro- tective devices that are simple install, depending on the particular application.3. Al- though now largely replaced the USB interface, the RS232 standard still frequently used for control lines. The system can de- signed for maximum eight data lines, although two are always used send and receive lines. • RS232 interface The RS232 frequently used interface. • V11 interface V11 the German designation for the RS422. • RS485 interface The RS485 industrial bus interface differs slightly from the RS422 that the RS485 enables the connection of several transmitters and receivers (up users) via protocol. This enables cable lengths several hundred metres realised. used, for example, for modems and other peripherals. The stand- ard includes cable and connector types such as RJ45. all cases, careful planning of surge protection measures required, taking account of the data interfaces hand. The maximum length this bus sys- tem, when twisted-pair cables are used, approx. • RS422 interface The RS422 serial high-speed standard suitable for communication between maximum ten users, which designed bus. Ethernet Ethernet the standard technology for networked computer systems today. • TTY system Unlike the RS232 other serial interfaces, the TTY system not voltage-controlled instead delivers an imposed current (4–20 mA). 1. The Amer- ican nomenclature, however, the most widely used. extends from the simple installation print- er connected complex networks with sever- al thousand clients.2 km with data rate Mbit/s (dependent upon seri- al controllers).5 Data technology Data technology used wide range applica- tions. • V24 interface V24 the German designation for RS232. Specified data transmission rates range from Mbit/s much Gbit/s today, and the data can transmitted over both clas- sic copper cables and fibre optic cables. The American nomenclature, however, the most widely used.3.2. TBS Blitzschutz-Leitfaden 2018 / en / 2020/01/10 14:42:40 14:42:40 (LLExport_02613) / 2020/01/10 14:42:54 14:42:54 250 Chapter The internal lightning protection system . Interfaces External devices such printers, scanners and con- trol systems activated via serial parallel interfaces must additionally integrated into the surge protec- tion concept. There range interfaces for different applica- tions: from bus lines for telecommunication and data transfer through simple terminal devices such as printers scanners