CPC G05B 23/0216 (2013.01) [G05B 9/02 (2013.01); G05B 23/0213 (2013.01)] | 18 Claims |
1. A safety detector comprising two supply terminals, a first control input and a first control output, a first safety output and a second safety output, a first free terminal and a second free terminal and a second control input connected to the first free terminal and a second control output connected to the second free terminal, the safety detector further comprising a control and processing unit configured for:
reading a control signal at an input;
applying a first test sequence comprising disabling the first control output and testing a start loop connected between the second control output and the first control input and/or a second test sequence comprising disabling the second control output and testing a start loop connected between the first control output and the second control input; and
applying a third test sequence comprising reading a status of the first control output and a status of the second control output.
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