Patent ID: 6112157
Filing Date: 2000-08-29
Classification: G05B,G05F

Abstract:
A constant-current regulator for regulating and monitoring current f ed t o at least one downstream load and for evening out the current fed to the at least one downstream load at a control level or in response to a change in the control level for the current, comprising:a first bus and a second bus, said first and second busses being two mutually independent, separate busses for applying control signals having a similar regulating and monitoring content to the constant-current regulator;a first processing stage for performing separate integrity checks of the control signals from said first bus and the control signals from said second bus; anda second processing stage for causing the control signals from said second bus or from said first bus, respectively, to be used as a basis for operation of the constant-current regulator if the integrity check of said first processing stage ascertains a lack of integrity for the control signals from said first bus or from said second bus, respectively.