Before clarifying safety relays, you need to understand the difference between ordinary relays and forced oriented relays:
Ordinary relay: the contacts are fused, which will cause two pairs of contacts (NO/NC) to be ON at the same time.
Forced guide relay: Under the action of the internal forced guide rod, even if the contacts are fused, it will not make the two pairs of contacts (NO/NC) appear ON at the same time. The forced guiding structure is a simple and effective way to detect contact welding faults.
The core component of the safety relay is the forced oriented relay. From the perspective of the relay, the difference between the safety relay and the ordinary relay can be seen.
Simply put: safety relays are safer and more reliable, suitable for industrial safety occasions.
Safety relays are mainly suitable for the following occasions:
1 Suitable for the application of electromagnetic door lock switch to ensure the safety of the work area
2 It is suitable for the key to cooperate with the safety door switch to detect the opening and closing of the door
3 Applicable to safety threshold switches, detecting the position of the door, opening or closing applications
4 Suitable for safety light curtain to prevent workers from entering the dangerous work area
5 Applicable safety mat switch to confirm that workers can safely enter the hazardous work area
6 Applicable emergency stop button, in case of emergency, stop the machine operation
