34 Using Interference-Free Variants of I/O Modules in Safety Related ApplicationsWAGO-I/O-SYSTEM 750750-530 8DO 24V DC 0.5AManualVersion 1.2.0Pos : 80.6 /Serie 750 (WAGO-I/O-SYST EM)/Eins atz in sicherheitsg erichteten Anwendung en/Allgemeiner Aufbau ei ner Potenti algruppe - r üc kwir kungsfr eie Vari anten @ 6\mod_1258973074755_21.doc x @ 44664 @ 23 @ 17.2 Connecting the IO Module to Safety SwitchingDevices or Safety Modules7.2.1 General StructureWhen using the interference-free variant “…/xxx-8xx”of the IO module 750-530in safety related applications, the modules belonging to a safety switching deviceshall be combined to form a potential group. Power to the potential group shall besupplied via a power supply module 750-601 or 750-602 or via filter module750-626. Either a power supply module or a separation module without powerjumper contacts (750-616) must be connected at the end of the potential group.Pos : 80.7 /Serie 750 (WAGO-I/O-SYST EM)/Eins atz in sicherheitsg erichteten Anwendung en/Aufbau einer Potenti algruppe @ 6\mod_1259221280455_21.doc x @ 45332 @ @ 1Figure 11: Potential Group for Safety Related ApplicationsPos : 81 /D okumentation allgemei n/Glieder ungs elemente/---Seitenwechs el--- @ 3\mod_1221108045078_0.doc x @ 21810 @ @ 1