WAGO 750-537/040-000 Manual

42 Using in Safety Related Applications WAGO-I/O-SYSTEM 750 XTR750-537/040-000 8DO 24 VDC 0.5A Diagn XTRManualVersion 1.1.17 Using in Safety Related ApplicationsThe 750-537/040-000 I/O module is suited for use in interference-free safetycircuits.If the field side supply is shut down via a safety switching device, the safetyfunction of the module is not active.When the interference-free I/O module is used correctly in a safety relatedapplication, neither the SIL nor Performance Level achieved by the circuit nor thecategory will be influenced.This requires that you adhere to the following notes and connection diagrams!1 Eins atz der rüc kwir kungsfrei en Digital ausg angs kl emme in Sic her heitsanwendungen7.1 Important NotesOnly operate interference-free I/O modules at a safe extra low voltage!When using interference-free I/O modules, only use power supplies withprotective extra-low voltage (PELV/SELV) for the 24 VDC power supply.Note maximum voltage!Please note that a maximum voltage Umax only can act on the reaction-free I/Omodule in the event of a failure because irreparable damage could occur to themodule otherwise.For the reaction-free I/O module , the field supply voltage is:Umax < 32 VNote IP54 protection class!IP54 protection class is absolutely mandatory. This means that the interference-free digital output module shall only be integrated and operated in switch boxesor switch cabinets complying with IP54 or higher.Avoid reverse supply of output!The 24 V power supply shall never be applied to the output of an interference-free digital output module. This wiring failure will not be detected by the system.