ENERGY SUPPLY UNIT AND METHOD FOR OPERATING AN ENERGY SUPPLY UNIT FOR AUTONOMOUSLY SUPPLYING A LOAD

摘要

The present invention relates to an energy supply unit (200) for self-supplying energy to a load (140). The energy supply unit 200 includes an energy store ER designed to supply electrical energy to the load 140 when the load 140 is decoupled from the energy supply network 115. The energy supply unit 200 further includes an input 110 coupled to the energy store ER via a diode to receive electrical energy and an output 130 for sending electrical energy to the load 140 And an energy supply control unit (100) having a power supply control unit (100). Finally, the energy supply unit 200 comprises a monitoring unit 230 for sending out the monitoring signal 150, RESET, in which case the monitoring unit 230 is connected to the output 130 and the reference potential 120 Is set to an active state ("0") when the output voltage Uout applied between the input / output terminals UOUT_ru and UOUT_ro is less than or greater than the predefined activation threshold Uout_ru / Uout_ro. The monitoring unit 230 is also detected in such a way that an input voltage too low between the input 110 of the energy supply control unit and the reference potential 120 is paired with a particularly low output voltage Uout 130 , It is designed to switch the monitoring signal (150, RESET) back to inactive only when the input voltage exceeds the reset threshold and the output voltage of the controller lies within the monitoring band.