Title: +038=360.000-OU045T_04-PCD2.m4160 PLS SBC - IO Manual.pdf
This sign accompanies instructions that must always be followed.Explanations beside this sign are valid only for the Saia PCD® Classic series.Explanations beside this sign are valid only for the Saia PCD® xx7 series.A-1Installation direction and relays contact protectionA.4Installation direction and relays contact protectionA.4.1Installation direction for switching low voltagesFor reasons of safety it is not allowed that low voltages (up to 50 V) and higher voltages (50 … 250 V) are connected to the same module.If a Saia PCD® system module is connected to a higher voltage (50 … 250 V) ap- proved components for this voltage have to be used for all elements which are galvanically connected to the system.Using higher voltage (50 … 250 V), all connections to the relay contacts are to be connected on the same circuit. That means at one point in such a way that they are all protected against one AC-phase by only one fuse. Each load circuit may be protected individually by a fuse of max. 2 A.