Your advantages Possible to connect up to 20 safety switches in series Integrated short circuit monitoring by pulsing Large operating distance High protection against tampering Adjustable actuating head with 5 approach directions (only housing C01) Compatible mounting with standard housing according to EN 60947-5-2 (only housing C01) Diagnostics using LED The non-contact safety switch CES-AR-É is designed for systems in which a large number of safety doors need to be monitored. It can also be used as a compact individual switch. The small design of the actuator and switch makes mounting on the safety guard easy. Design and functionality The safety switches are connected together using connectors. The CES-AR-... has two safety outputs. In a chain of switches, the signals from the safety outputs are connected to the next switch. The outputs on the last switch in the chain are connected directly to drives, downstream safety relays or safe control systems. The switch monitors itself for short circuits using pulsed signals. External clock signals are not allowed (see next section). More information Indication for actuator in the limit range If the safety door with the actuator should settle over time, the actuator can drift out of the read head operating distance. The device recognizes this and indicates that the actuator is in the limit range (function available from V 1.1.2 and higher). This allows the safety door to be readjusted in time. Connection to safe control systems or safety relays Do not use a control system or safety relay with pulsing for monitoring short circuits or switch off the pulsing function in these devices. The switch generates its own clock signals on the output lines OA/OB. A downstream device must tolerate these test pulses, which may have a length of up to 1 ms. The inputs on the downstream device must be suitable for positive-switching devices (pnp outputs), as the two outputs on the safety switch deliver a level of +24 V in the switched-on st