Multi-channel LED driver apparatus for supplying current to a plurality of LED modules, comprising: at least two supply channels (210; 220) each for an LED module, the at least two supply channels (210; 220) each having a current output (212; 222) and each having a measurement input (214; 224), each LED module of the plurality of LED modules having a first current connection (12; 22) which can be connected to the current output (212; 222) of one of the at least two supply channels (210; 220), and a second current connection (14; 24) which can be connected to the measurement input (214; 224) of one of the at least two supply channels (210; 220), and an actuation device which is configured to detect a relevant electrical parameter at the relevant measurement input (214; 224) of the relevant supply channel (210; 220) and to carry out open-loop control of, for each supply channel (210; 220) of the at least two supply channels (210; 220), in each case at least one of the respective electrical parameters at the relevant current output (212; 222) depending on a relevant input quantity, which corresponds to the relevant electrical parameter at the relevant measurement input (214; 224) of the relevant supply channel (210; 220); characterized in that the actuation device is also configured to assign, based on configuration data, the respective current outputs (212; 222) and the respective measurement inputs (214; 224) and to determine, by means of a comparator component of the actuation device, at least for one of the at least two supply channels (210; 220), whether, when the relevant assigned current output of this at least one supply channel is actuated, at the input quantity of this at least one supply channel, a corresponding response signal is absent at the relevant assigned measurement input of this at least one supply channel, or to determine whether, when the relevant assigned current output of this at least one supply channel is actuated, the input quantity at the assigned measurement input of another supply channel of the at least two supply channels (210; 220) corresponds to a response signal, and to provide an error signal if the response signal is absent at the measurement input of the at least one supply channel or the input quantity corresponds to the response signal at the measurement input of the other supply channel. at least two supply channels (210; 220) each for an LED module, the at least two supply channels (210; 220) each having a current output (212; 222) and each having a measurement input (214; 224), each LED module of the plurality of LED modules having a first current connection (12; 22) which can be connected to the current output (212; 222) of one of the at least two supply channels (210; 220), and a second current connection (14; 24) which can be connected to the measurement input (214; 224) of one of the at least two supply channels (210; 220), and an actuation device which is configured to detect a relevant electrical parameter at the relevant measurement input (214; 224) of the relevant supply channel (210; 220) and to carry out open-loop control of, for each supply channel (210; 220) of the at least two supply channels (210; 220), in each case at least one of the respective electrical parameters at the relevant current output (212; 222) depending on a relevant input quantity, which corresponds to the relevant electrical parameter at the relevant measurement input (214; 224) of the relevant supply channel (210; 220); characterized in that the actuation device is also configured to assign, based on configuration data, the respective current outputs (212; 222) and the respective measurement inputs (214; 224) and to determine, by means of a comparator component of the actuation device, at least for one of the at least two supply channels (210; 220), whether, when the relevant assigned current output of this at least one supply channel is actuated, at the input quantity of this at least one supply channel, a corresponding response signal is absent at the relevant assigned measurement input of this at least one supply channel, or to determine whether, when the relevant assigned current output of this at least one supply channel is actuated, the input quantity at the assigned measurement input of another supply channel of the at least two supply channels (210; 220) corresponds to a response signal, and to provide an error signal if the response signal is absent at the measurement input of the at least one supply channel or the input quantity corresponds to the response signal at the measurement input of the other supply channel.