Title: +038=360.000-OU045T_04-PCD2.m4160 PLS SBC - IO Manual.pdf
Because of the physical properties of inductive loads, it is not possible to discon- nect inductance without interference. This interference must be minimized as far as possible. Although the Saia PCD® is immune to this interference, there are other devices which may be susceptible.It should be noted here that, as part of the harmonization of standards throughout the EU, EMC standards have applied since 1996 (EMC Directive 89 / 336 / EG). Two firm principles can therefore be stated:PROTECTION AGAINST INTERFERENCE FROM INDUCTIVE LOADS IS MANDATORYPROTECTION AGAINST INTERFERENCE FROM INDUCTIVE LOADS IS MANDATORYINTERFERENCE SHOULD BE ELIMINATED AS CLOSE AS POSSIBLE TO ITS SOURCEINTERFERENCE SHOULD BE ELIMINATED AS CLOSE AS POSSIBLE TO ITS SOURCERelay contacts on the present module have been wired. However, it is still recom- mended that a protection circuit should be fitted at the load.(Often available as normal components on standardized contactors and valves).