5 26 Oper ating Instr u ctions CM Synchronous Ser v omotors Electrical Inst allation Electrical connection The VR forced cooling fan is available for a DC voltage of 24 V and for an AC voltage of 100 to 240 V section Appendix Wiring diagra m for VR forced cooling fan 2 4 V DC 20 P lug connection M ax connection cross section 3x1 mm 2 C able screw fitting Pg7 with 7 mm inside diameter UWU51A switchedmode power supply The AC version consists of a VR forced cooling fan and the UWU51A switchedmode power supply following figure I nput 100 240 V AC 6 10 5060 Hz O utput 24 V DC 1 2 125 A C onnection Screw terminals 0225 mm 2 separable E nclosure IP20 mounted on mounting rail EN 50022 in the switch cabinet 50990AXX Plug cont act Connection 1 24 V 2 0 V 1 2 24V DC 50919AXX 77 38 845 745