| 摘要 |
Method for safely disconnecting an electrical load (32), in which method a multi-channel control unit (12) reads in an input signal from a safety switch (for example emergency shut-off 26, protective door 24, light grid 28) by means of a single-channel data transmission section (22) and generates an enable (38) which is transmitted to an output unit (16) by means of the single-channel data transmission section (22). The output unit (16) comprises two processing units (50, 58) of different construction, wherein the first processing unit (50) generates a first output signal (63), and the second processing unit (58) generates a dynamic clock signal (60) depending on the enable (38). The safe outputs (52) are connected only when both signals, the first output signal (63) and the dynamic clock signal (60), are present. |
