초록 ▼

A constant-current regulator regulates and monitors the current fed to one or more downstream loads. It also serves to even out the current fed to the downstream load or loads at the control level or when there is a change in the control level. In order to enhance the security and reliability of ope

A constant-current regulator regulates and monitors the current fed to one or more downstream loads. It also serves to even out the current fed to the downstream load or loads at the control level or when there is a change in the control level. In order to enhance the security and reliability of operation of such a constant-current regulator when installed in a control and monitoring circuit, control signals having a similar regulating/monitoring content are applied to the constant-current regulator by means of two separate busses (3, 4) in a mutually independent manner. The constant-current regulator is used to carry out a separate plausibility/conformity check of the control signals from the first bus (3) and the control signals from the second bus (4). If a lack of plausibility/conformity is ascertained for the control signals of the first bus (3), the control signals of the second bus (4) are taken as the basis for operation of the constant-current regulator. On the other hand, if a lack of plausibility/conformity is ascertained for the control signals of the second bus (4), the control signals of the first bus (3) are taken as the basis for operation of the constant-current regulator.

대표청구항 ▼

[ What is claimed is:] [1.] 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:

[ What is claimed is:] [1.] 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.