Siemens SIMATIC NET PROFIBUS manual

Lightning and Surge Voltage Protection for LAN Cables Between Buildings

B.2.3 General Information on the Lightning Protection Equipment from the Firm of Dehn & Söhne

SWhen installing the modules read the instructions regarding the products from Dehn & Söhne.

SIf there is a fault in a lightning protection module, communication on the bus is interrupted (cable short-circuit). To re-establish communication temporarily (without lightning protection) the protective modules can be removed from the base modules since these function as through-connected terminals without the protective module.

SThe rest of the plant protection concept must be implemented complying with VDE 0185 Part 103.

PROFIBUS Networks SIMATIC NET	B-7
6GK1970-5CA20-0AA1 Release 2 05/2000