Reliability, Safety 2.6 Electromagnetic Compatibility 2.6.1 Definition Electromagnetic compatibility is the ability of a device to function satisfactorily in its electromagnetic environment without itself causing any electromagnetic interference that would be intolerable to other devices in this environ- ment. Of all known phenomena of electromagnetic noise, only a certain range occurs at the location of a given device. It is defined in the relevant product standards. The international standard regulating construction and degree of noise resistance of programmable logic con- trollers is IEC 61131-2 which, in Europe, has been the basis for European Standard EN 61131-2.
Refer to IEC 61131-4, User's Guideline, for general in- stallation instructions to be complied with to ensure that hardware interface factors and the ensuing noise volt- ages are limited to tolerable levels. E 327 GB 19 10.06.2003