• AES to secure two guard industrial doors up to Control Category 3 to EN 954-1. • Monitoring two guard doors, each with a magnetic safety sensor of the BNS range. • If one or two external relays or contactors are used to switch the load, the system can then only be classified in Control Category 3 to EN 954-1, if exclusion of the fault "Failure of the external contactors" can be substantiated and is documented, e.g. by using reliable down-rated contactors. A second contactor leads to an increase in the level of security by redundant switching to switch the load off. • Expansion of enable delay time: The enable delay time can be increased from 0.1 s to 1 s by changing the position of a jumper link connection under the cover of the unit. |