Preventa Expansion Bus Connector, XPSMCM The Preventa XPSMCM expansion bus connector provides a safe communication between safe expansion components and the safety controller CPU. Only the safety controller CPU requires the purchase of the expansion bus connector, expansion modules are provided with one. Features and Benefits 1 male + 1 female connectors, 5-pin for rear panel plug-in connector Omega 35 mm DIN Rail conforming to IEC 60715 Note The XPSMCM system is TUV SUD certified to Cat 4, PLe EN/ISO 13849-1 and SILCL 3 IEC/EN 61508 & IEC/EN 60261 standards. Safety Controller