Kendrion Kuhnke Automation GmbH Reliability, Safety 2.7 Electromagnetic Compatibility 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 environment. Of all known phenomena of electromagnetic noise, only a certain range occurs at the location of a given device. These kinds of noise are specified in the applicable product standards.
The design and immunity to interference of programmable logic controllers are internationally governed by standard IEC 61131-2 which, in Europe, has been the basis for European Standard EN 61131-2. Interference Emission Interfering emission of electromagnetic fields, HF compliant to EN 55011, limiting value class A, Group 1 General Notes on Installation As component parts of machines, facilities and systems, electronic control systems must comply with valid rules and regulations, depending on their field of application.
General requirements concerning the electrical equipment of machines and aiming at the safety of these machines are contained in Part 1 of European Standard EN 60204 (corresponds to VDE 0113). Electrical Immission Safeguard To eliminate electromagnetic interference, connect the control system to the protective earth conductor. Practice best cable routing. Cable Routing and Wiring Keep power circuits separate from control circuits: DC voltages 60 V ... 400 V AC voltages 25 V ... 400 V Joint laying of control circuits is allowed for:
shielded data signals shielded analogue signals Kuhnke FIO CAM Control ( E 808 GB ) 9 11/10/2017 Information Refer to IEC 61131-4, User's Guideline, for general installation instructions to be complied with to ensure that hardware interface factors and the ensuing noise voltages are limited to tolerable levels. Information If the controller is designed for use in residential areas, high-frequency emissions must comply with limiting value class B as described in EN 55011.Fitting the controller into earthed metal cabinets and installing filters in the supply lines may produce a shielding compliant to the above standard.