CES-AR

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)
Fastenings compatible with standard housing according to EN 60947-5-2(only housing C01)
Fastenings compatible with standard housing
Diagnostics using LED

The non-contact safety switch CES-AR-… 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 boundary area

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 boundary area (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 1ms.

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 state.

OUT output

The semiconductor output OUT is switched if the safety guard is closed (actuator in the operating distance). It is not allowed to be used for safety functions. The OUT outputs on the individual switches can, however, not be polled if connected in series using a Y-distributor. Evaluation is only possible on parallel wiring to the control cabinet.

RST input

The switches in a chain in a fault state can be reset using the RST input. To do this, a voltage of 24 V is applied to the RST input for at least 3 seconds. It is not necessary to disconnect the supply of power to reset a fault.

Usage as individual switch or switch chain

The safety switch CES-AR can be operated as a compact individual switch or in a switch chain with max. 20 devices.

If a single CES-AR is used, connect the switch as shown in figure above. The OUT output can also be connected here to a control system as a monitoring output.

The switches are connected in series using plug connectors and Y-distributors. The first switch in the chain must always be fitted with a bridging plug. If a safety guard is opened or if a fault occurs on one of the switches, the system shuts down the machine. A higher level control system can, however, not detect which safety guard is open or on which switch a fault has occurred. A special AR evaluation unit is required.

Non-contact safety switch CES-AR-C01...

Read head with integrated evaluation electronics
Up to 20 switches in series
Short circuit monitoring
2 safety outputs (semiconductor outputs)
Category 4 / PL e according to EN ISO 13849-1

Approach direction

Can be adjusted in 90° steps

Short circuit monitoring

The switch generates its own clock signal on the output cables OA/OB. Pay attention to this aspect when connecting to control systems and relays.

Unicode evaluation

Each actuator is unique. The safety switch detects only the actuator that has been taught-in. Additional actuators can be taught-in.

Only the last actuator taught-in is detected.

Multicode evaluation

Every suitable actuator is detected by the safety switch.

Fixcode evaluation

An actuator CES-A-BPA is permanently allocated to the evaluation unit. The evaluation unit can be operated only with this actuator. The actuator is taught-in at EUCHNER prior to delivery. No additional actuators can be taught-in.

Category according to EN 13849-1

Due to two redundant design semiconductor outputs (safety outputs) with internal monitoring suitable for:

Category 4 /PL e according to EN 13849-1

Important: To achieve the stated category in accordance with EN ISO 13849-1, both safety outputs (OA and OB) must be evaluated.

LED indicator

STATE	Status LED
DIA	Diagnostics LED

Additional connections

OUT	Monitoring output (semiconductor)
RST	Reset input

Important:Only safety switches CES-AR-C01 from serial number V 1.1.2 can be connected to the AR evaluation unit.

Order numbers:

Unicode

098 941 CES-AR-C01-AH-SA

Multicode

098 942 CES-AR-C01-CH-SA

Fixcode (actuator CES-A-BPA included)

098 582 CES-AR-C01-EH-SA

Non-contact safety switch CES-AR-C01...

M12 plug, 8-pin

Dimension drawing

Block diagram

Terminal assignment

(View of connection side of the safety switch)

Non-contact safety switch CES-AR-CR2-... , plug connector M8

Read head with integrated evaluation electronics
Up to 20 switches in series
Short circuit monitoring
2 safety outputs (semiconductor outputs)
Door hinge right
Category 4/PL e according to EN ISO 13849-1
With plug connector M8, 8-pin