BS EN 50491-5-1:2010 pdf free.General requirements for Home and Building Electronic Systems (HBES) and Building Automation and Control Systems (BACS) EMC requirements, conditions and test set-up.
BS EN 50491-5-1 This product family standard sets the minimum level of EMC performance for HBES/BACS products intended to be connected to an HBES/BACS system.
A set of devices connected to perform a stand alone application is not considered to be an HBES/BACS system and therefore are outside the scope of this European Standard.
This European Standard provides the general performance requirements and test setups for EMC for all products connected to HBES/BACS.This connection can be wired (e.g. communication cable, power line) or wireless (e.g. radiofrequency, infrared).
This European Standard is applicable (but not limited) to
operator stations and other human system interface devices,
devices for management functions,
control devices, automation stations and application specific controllers,
field devices and their interfaces,
cabling and interconnection of devices,
dedicated devices for engineering and commissioning tools for HBES/BACS.During and after all tests, independent of the performance criteria, the device shall not block the transmission media or send unintended telegrams. Intended telegrams are alowed to be corrupted by EMC phenomena.
A functional description and a definition of performance criteria, during or as a consequence of the EMC testing, shall be provided by the manufacturer and noted in the test report, based on the following criteria:
many devices operate using sophisticated protocol services which permit the recovery of data corrupted by interference or cause re-transmission of data in the event of corruption.
Transmission errors caused by the application of the tests in this European Standard and which are subsequently corrected by the protocol services are regarded as normal and the equipment is regarded as operating as intended in such circumstances;
changes in stored data, such as communication error logs, and which are not directly related to the intended function of the equipment shall be ignored, or recorded on request by the manufacturer.BS EN 50491-5-1 pdf download.