Safety sensors Note Wiring diagram

• AES to secure two guard industrial doors up to ControlCategory 3 to EN 954-1.• Monitoring two guard doors, each with amagnetic safety sensor of the BNS range.• If one or two external relays or contactors are used to switch the load, the system canthen only be classified in Control Category 3 to EN 954-1, if exclusion of the fault “Failureof the external contactors” can be substanti-ated and is documented, e.g. by using reliable down-rated contactors. A secondcontactor leads to an increase in the level of security by redundant switching to switchthe 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 coverof the unit.

L1 +24VDC0V

A1 S13 K1K2 K3K4 S1S2 max.S13S14S21S22 3 S14S21S2213

AES1165/1166

100mA A2 A1 14A2

N

M

ISD Note

The following faults are recognised by safety monitoring module and indicatedby means of ISD The wiring diagram is shown with guard doors closed and in de-energised condition.The ISD tables (Intergral System Diagnostics) for analysis of the fault indications and their causes are shown in the appendix. • Failure of door contacts to open or close • Cross-wire or short-circuit monitoring of the switch connections• Interruption of the switch connections• Failure of the safety relay to pull-in or drop-out• Faults on the input circuits or on the relaycontrol of the safety monitoring module

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