CPC H01H 47/002 (2013.01) [G01R 31/3278 (2013.01); H01H 47/001 (2013.01)] | 9 Claims |
1. A relay safety system, comprising:
a relay;
an emergency stop device adapted to generate an emergency stop signal;
a trigger detection circuit connecting said relay and said emergency stop device and adapted to convert said emergency stop signal into a trigger signal;
a sticking detection circuit connected to said trigger detection circuit and said relay, and adapted to detect a sticking signal generated by said relay, and generate a power-off signal according to said trigger signal and said sticking signal; and
a power-off circuit connected to said emergency stop device, said relay and said sticking detection circuit, and adapted to receive said power-off signal and disconnect the power of said relay according to said power-off signal.
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