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Safety Edges & Mats |
Safety Relays The safety relay or switching unit monitors the integrated 8k2 Ohm resistor in the safety edges or safety mat for any changes in resistance by a continuously flowing current. While the sensors are not activated the output relays are energised, but when one or more sensors are activated and the total resistance sinks falls below the lower threshold the relays are de-energised indicating that the safety edge or safety mat has been activated. Similarly when an error occurs in the sensor circuit such as open circuit the relays are de-energised and a warning LED illuminates to indicate a fault. The relays are certified to Category 1, 2 or 3 when used in conjunction with Bircher Reglomat's safety edges or mats. |
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Category 3 |
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Category 2 |
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Category 1 |
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