BS EN 50370-2:2003 – Electromagnetic compatibility (EMC) — Product family standard for machine tools — Part 2: Immunity

5.1.2.1 Test procedure A The machine tool shall be tested according to the immunity requirements laid down in this standard (see 5.2 to 5.6 and Annex A). For tests, the machine tool shall operate as specified by the manufacturer. The performance criteria (Table 2) shall be used to check the performance of a machine tool before, during and after each immunity test.
5.1.2.2 Test procedure B The entire electrical set of the machine tool shall be tested according to the specific immunity requirements laid down in this standard (see 5.2 to 5.6 and Annexes A and B) while simulating specific functions to be specified by the manufacturer. The performance criteria (Table 2) shall be used to check the performance of a machine tool before, during and after each immunity test.
5.1.2.3 Test procedure C The machine tool shall be divided into modules by the manufacturer in any appropriate fashion to enable the procedure C to be carried out. After having divided a machine tool into modules, the manufacturer shall classify each module as electromagnetically relevant or irrelevant concerning the immunity of the machine tool. Electromagnetically irrelevant modules need not be tested. Electromagnetically relevant modules shall be subjected to the following steps:
1 ) determine which ports of the machine tool are electrically connected to which port or interfaces of the module (see Annex C, Table C.1 );
2) the tests shall be applied to all ports of the module which will be used as external ports in the complete machine tool;
3) the enclosure ports of all modules are considered to be connected to the enclosure port of the machine tool;
4) the module shall be tested according to the immunity requirements laid down in this standard (see 5.2 to 5.6 and Annexes A and C) or according to a harmonised European generic, product family or product immunity standard for the industrial environment. NOTE The machine tool builder does not need to repeat tests on an EMC compliant module as declared by its manufacturer.
5.2 Test arrangements Tests shall be applied to the relevant ports of the machine tool or the modules as specified in 5.1 .2.1 to 5.1 .2.3 and the respective annexes. However, if several process measurement and control ports or signal interfaces have the same physical configuration (layout) it is sufficient to test one port or interface of that type. The tests shall be carried out as single tests in sequence.
The sequence of testing is optional. These tests shall be performed normally in the test conditions as specified in the basic immunity standards (these test conditions may include in situ testing, as long as they are specified in the basic immunity standards).
BS EN 50370-2-2003