The invention relates to a robot having actuator-driven elements, which requires a desired operating voltage UB and/or a desired operating current IB in order to operate, comprising: a voltage and current source having an input interface, to which a primary voltage UP and a primary current IP are applied, wherein, during normal operation, the primary voltage UP is equal to a desired primary voltage UP,desired and the primary current IP is equal to a desired primary current IP,desired, and also having an output interface, to which an actual voltage Uactual and an actual current Iactual are supplied, wherein during normal operation: Uactual=UB and Iactual=IB, an energy store, which is integrated into the voltage and current source and which maintains the operating voltage UB and the operating current IB for a predefined period of time Δt following a failure or a drop in the primary voltage/primary current, a unit for monitoring the primary voltage UP applied to the input interface, wherein the unit is configured such that as soon as the applied primary voltage UP deviates by a predefined amount ΔU from the desired primary voltage UP,desired, a stop signal is generated, and a control unit, which is connected to the unit and which is designed for controlling the robot and its actuator-driven elements, wherein the control unit is configured to control the robot with its elements into a predefined safe state upon receipt of the stop signal.