Patent ID: 9577470
Date: 2017-02-21
CPC Classifications: G06F,H02J,H04B,Y02B,Y04S

Claim:
1. An arrangement comprising: an electrical and/or electronic supply circuit that provides a supply voltage, which serves to output a first value of the supply voltage when the supply voltage is derived from a first voltage source and a second value of the supply voltage when the supply voltage is derived from a second voltage source, wherein said second voltage source is a chargeable energy storer and an operating electronics for a radio unit for a plant of process automation technology which serves for the functions of the radio unit and provides a voltage for the supply of a field device which is connectable to said radio unit; and a detection circuit in said operating electronics which measures the values of the supply voltage and sets said operating electronics to different operating modes based on the measured value; wherein, in the case in which the supply voltage is delivered from the second voltage source a radio connection via the radio unit is uninterrupted for a predetermined period of time and wherein said field device connected to the radio unit is switched off to save energy.