| 摘要 |
The invention relates to a safety switching device, with which a safety-related device, preferably an electric drive, can be set into a safe state. The safety switching device ( 900 ) has a microprocessor or microcontroller ( 822 ), which can set, for example, an electric drive to be protected into a safe state both if an emergency circuit breaker, protective door switch, and/or two-hand switch is activated and also if there is faulty operation of the safety-related device or electric drive. For this purpose, the microprocessor ( 822 ) is preferably implemented such that it can determine from at least one analog signal to be measured whether a predetermined parameter, preferably the amplitude of the analog signal, lies outside a predetermined operating range. In addition, the microprocessor ( 822 ) can be a component of a safety device ( 810 ) which is constructed for multiple-channel control of a safety-related electric drive. In this way, the safety switching device ( 900 ) can respond to several safety functions independent of each other in order to set an electric drive into a safe state. In addition, for such a compact safety switching device, the risk of a wiring error relative to known measures is significantly reduced.
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