| 摘要 |
The invention relates to an assembly (10), comprising an input side (11), an output side (12) isolated from the input side (11) in respect of electrical potential, and a potential-isolated power supply device (20), which has: an input (E20) on the input side (11) of the assembly for applying an input voltage (Ue) and at least two outputs (A21, A22, A23) on the output side (12) of the assembly for outputting at least two output voltages (Ua1, Ua2, Ua3), which outputs are isolated from the input (E20) in respect of potential. According to the invention, a monitoring device (30) is connected to the at least two outputs (A21, A22, A23) of the potential-isolated power supply device (20), which monitoring device monitors the output voltages (Ua1, Ua2, Ua3) for the attainment of respective minimum voltages (Umin1, Umin2, Umin3) associated individually with the outputs and produces a current (Is) having a desired level on the output side if all output voltages (Ua1, Ua2, Ua3) attain their respective minimum voltages (Umin1, Umin2, Umin3) associated individually with the respective outputs, to which monitoring device (30) an optocoupler input (E40) of an optocoupler (40) is connected, an optocoupler output (A40) of which is connected to a control device (50) located electrically on the input side (11) of the assembly (10), and the control device (50) generates an fault signal (Sf) if an output signal (Sa) that deviates beyond a specified extent from the desired output signal occurring in the event of a current having said desired level is present at the optocoupler output (A40). |
