EUCHNER CES-AP-CL2-CH User Manual

Operating Instructions

Non-Contact Safety Switch

CES-AP-CR2-CH (Multicode)

CES-AP-CL2-CH (Multicode)

More than safety.

Operating Instructions Safety Switch CES-AP-C.2-CH

Contents

About this document 3

Correct use 3

Possible combinations for CES components  4

Exclusion of liability and warranty 4

General safety instructions 5

Function 6

Mounting 8

Electrical connection 9

Notes for operation with safe control systems  10
Devices for direct connection to IP65 field modules  10
Safety in case of faults  11
Fuse protection for power supply  11
Requirements for connection cables  11
Connector assignment and wire color for safety switch CES-AP-C.2-CH  12
Connection  13
Connecting a CES-AP-...-SB-...  (pin 5 not assigned) to a decentralized peripheral system

(e.g. ET200pro series from Siemens)  14

Setup 15

LED indicators  15
Initial setup  15
Functional check  15

System status table 16

Technical data 17

Technical data for safety switch CES-AP-CR2-CH/CES-AP-CL2-CH  17
Technical data for actuator CES-A-BLN-...  19
Technical data for actuator CES-A-BDN  21

Ordering information and accessories 22

Inspection and service 23

Service 23

Declaration of conformity 24

2

Operating Instructions Safety Switch CES-AP-C.2-CH

About this document

This document is valid for all safety switches CES-AP-C.2-CH with version number 
V 1.1.2 or higher.

Correct use

The Coded Electronic Safety switches of series CES are safety devices for moni­toring movable safety guards.

In combination with a separating safety guard and the machine control, this safety 
component  prevents dangerous machine movements from  occurring  while  the 
safety guard is open. A stop command is triggered if the safety guard is opened 
during the dangerous machine function.

Before safety switches are used, a risk assessment must be performed on the 
machine, e.g., in accordance with:

 Ì EN ISO 13849-1, Safety of machinery. Safety related parts of control systems. 

General principles for design

 Ì EN ISO 12100, Safety of machinery – General principles for design – Risk as-

sessment and risk reduction.

Important:

 Ì IEC 62061, Safety of machinery. Functional safety of safety-related electrical, 

electronic and programmable electronic control systems.

Correct use  includes  compliance  with  the relevant requirements for installation 
and operation, for example

 Ì EN ISO 13849-1, Safety of machinery. Safety related parts of control systems. 

General principles for design

 Ì EN 1088, Safety of machinery. Interlocking devices associated with guards. 

Principles for design and selection

 Ì EN 60204-1, Safety of machinery. Electrical equipment of machines. General 

requirements

 Ì EN 60947-5-3, Specification for low-voltage switchgear and controlgear. Con-

trol circuit devices and switching elements. Requirements for proximity devices 
with defined behavior under fault conditions

The safety switch must be used only in conjunction with the designated CES ac­tuators from EUCHNER. On the use of different actuators, EUCHNER provides no 
warranty for safe function.

 Ì The user is responsible for the integration of the device into a safe overall 

system. For this purpose, the overall system must be validated, e.g. in ac­cordance with EN ISO 13849-2.

 Ì In the estimation of the PL for the overall system, a maximum value of 

100 years can be assumed for the MTTFd according to the limit value in 
EN ISO 13849-1:2008, section 4.5.2. This corresponds to a minimum value 
for the PFHd of 2.47x10-8/h.

 Ì Correct use requires observing the permissible operating parameters (see 

Technical data).

 Ì If a product data sheet is included with the product, the information on the 

data sheet applies in case of discrepancies with the operating instructions.

 Ì Only components may be used that are permissible in accordance with the 

table below.

3

Operating Instructions Safety Switch CES-AP-C.2-CH

Possible combinations for CES components

Actuator

Safety switch

door hinge right

CES-AP-CR2-CH

door hinge left

CES-AP-CL2-CH

door hinge right

CES-A-BLN-R2-100776

100776

door hinge left

CES-A-BLN-L2-104510

104510

usage independent of
position of door hinge

CES-A-BLN-U2-103450

103450

usage independent of
position of door hinge

CES-A-BDN-06-104730

104730

Key to symbols

Combination possible

Exclusion of liability and warranty

In case of failure to comply with the conditions for correct use stated above, or 
if the safety instructions are not followed, or if any servicing is not performed as 
required, liability will be excluded and the warranty void.

4

Operating Instructions Safety Switch CES-AP-C.2-CH

General safety instructions

Safety switches fulfill personal protection functions. Incorrect installation or tamper­ing can lead to fatal injuries to personnel.

Check the safe function of the safety guard particularly

Ì after any setup work
 Ì after the replacement of a CES component
 Ì after an extended period without use
 Ì after every fault

Independent  of  these  checks, the safe function of the safety guard should be 
checked at suitable intervals as part of the maintenance schedule.

Warning!

Danger of fatal injury in the event of incorrect connection or incorrect use. 

 Ì Safety switches must not be bypassed (bridging of contacts), turned away, 

removed or otherwise rendered ineffective.
On this topic pay attention in particular to the measures for reducing the pos­sibility of bypassing from EN 1088:1995+A2:2008, Section 5.7.

Important:

The device is only allowed to be installed and placed in operation by authorized 
personnel

Ì who are familiar with the correct handling of safety components 
 Ì who are familiar with the applicable EMC regulations
 Ì who are familiar with the applicable regulations on health and safety and ac-

cident prevention 

 Ì who have read and understood the operating instructions.

Prior to use,  read the  operating instructions  and  keep these  in  a safe  place. 
Ensure that the operating instructions are always available during  mounting, 
setup and servicing work. EUCHNER cannot provide any warranty in relation to 
the readability of the CD  for the  storage period required. For this reason you

should archive a printed copy of the operating instructions. You can download 

the operating instructions from www.EUCHNER.de.

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Operating Instructions Safety Switch CES-AP-C.2-CH

Function

The device complies with the following safety requirements:

Ì Safety category 4, PLe according to EN ISO 13849-1
 Ì Redundant design of the circuit in the unit with self-monitoring
 Ì This means that the safety system still functions even if an internal component

fails

 Ì The switch state of the semiconductor outputs is continuously monitored inter-

nally

 Ì Short circuit detection at the safety outputs by pulse signals

The following switch-on condition applies  to safety outputs OA and OB (see also 
System status table and the section Typical system times):

 Ì Safety guard closed

The system consists of the following components: coded actuator (transponder) 
and switch.

Every EUCHNER actuator supplied has an electronic coding (unique coding) that is 
read by the read head. Only if a correct coding is detected does the system accept 
the actuator. The code in an actuator cannot be reprogrammed.

Unlike systems with unique code detection, on the CES-AP-C.2-CH a specific code is 
not polled but instead it is only checked whether the actuator is of a type that can 
be detected by the system (multicode detection). There is no exact comparison of 
the actuator code with the code defined in the safety switch (unique code detection).

The safety switch is fastened to the fixed part of the safety guard. 
The actuator attached to the movable part of the safety guard is  moved towards

the read head fitted in the safety switch by closing the door. When the switch-on 
distance is reached, power is supplied to the actuator by the read head by induc­tion and data can be transferred.

If a permissible code is detected, the safety outputs are released.
Due to the combination of dynamic polling of the actuator and  the  redundant,

diverse design of the safety electronics with the two feedback safety outputs, the 
safety switch will enter the safe state with every detectable fault.

When the safety guard is opened, the safety outputs switch off the safety circuit 
and the monitoring output OUT is switched off. The state of the safety outputs is 
monitored internally by two microprocessors.

If faults are detected, the safety circuit is switched off and the DIA LED illuminates. 
In case of devices with a DIA monitoring output, the output is switched on.

The safety switch has a redundant circuit design with self-monitoring. This means 
that the safety system is still effective even if a component fails.

The system is designed so that failures will not result in the loss of the safety func­tion. The occurrence of failures is detected by cyclic self-monitoring at the latest 
on the next demand to close the safety contacts (e.g. on starting).

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Operating Instructions Safety Switch CES-AP-C.2-CH

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 for V 1.1.2 and higher). 
This allows the safety door to be readjusted in time.

7

Operating Instructions Safety Switch CES-AP-C.2-CH

Mounting

Caution!

Risk of damage to equipment as a result of incorrect installation. Safety switches 

must not be used as a mechanical end stop. 

 Ì Fit an additional end stop for the movable part of the safety guard.

Important:

 Ì From the assured switch-off distance S

down.

, the safety outputs are safely shut 

ar

 Ì When mounting several safety switches, observe the stipulated minimum 

distance to avoid mutual interference.

Installation options

min. 400 mm

 Ì The operating distance changes during the mounting of the actuator as a 

function of the material used for the safety guard. Observe arrow direction 
on the device (see figure below).

Permissible approach directions

Note the following points:

 Ì Actuator and safety switch must be easily accessible for inspection and re-

placement.

 Ì The switching operation must only be triggered by the specific actuator desig-

nated for this purpose. For permissible combinations please see the table of 
possible combinations on page 4.

 Ì Actuator and safety switch must be fitted so that

 Ì the front faces are at the minimum switch-on distance 0.8 x S

when the safety guard is closed (see section Operating distances). A mini­mum distance dependent on the actuator must be maintained for a side ap­proach direction:    - for CES-A-BLN-R2    6 mm 

        - for CES-A-BLN-L2    6 mm 

        - for CES-A-BLN-U2    6 mm 

        - for CES-A-BDN      10 mm

 Ì when the safety guard is open up to the distance S

tance), a hazard is excluded.

 (assured switch-off dis-

ar

 or closer 

ao

 Ì the actuator is positively mounted on the safety guard, e.g. by using the 

safety screws included.

 Ì Pay attention to the maximum tightening torque for the safety switch and 

actuator mountings of 1 Nm.

8

Operating Instructions Safety Switch CES-AP-C.2-CH

Electrical connection

Warning!

In case of an error, loss of the safety function through incorrect connection.

Ì To ensure safety, both safety outputs (OA and OB) must always be evaluated.
 Ì The monitoring output OUT must not be used as a safety output.
 Ì Lay the connection cables with protection to prevent the risk of short cir-

cuits.

Caution!

Risk of damage to equipment or malfunctions as a result of incorrect connection.

 Ì The device generates its own clock signal on the output lines OA/OB. A 

downstream control system must tolerate these pulses, which may have a 
length of up to 0.4 ms. 
No pulses are output when the safety outputs are switched off.

 Ì The inputs on an evaluation unit connected must be positive-switching, as the 

two outputs on the safety switch deliver a level of +24 V in the switched-on 
state.

 Ì All the electrical connections must either be isolated from the mains supply 

by a safety transformer according to IEC 61558-2-6 with limited output volt­age in the event of a fault, or by other equivalent isolation measures (PELV).

 Ì For use and operation as per the   requirements, a power supply with the 

feature "for use in class 2 circuits" must be used. The same requirement ap­plies to the safety outputs.
Alternative solutions must comply with the following requirements:
a) Electrically isolated power supply unit with a max. open-circuit voltage of 30

V/DC and a limited current of max. 8 A.

b) Electrically isolated power supply unit in combination with fuse as per UL248. 

This fuse should be designed for max. 3.3 A and should be integrated into 
the 30 V/DC voltage section.

 Ì For use and applications as per the requirements of  , a connection cable 

listed under the UL category code CYJV2 or CYJV must be used and the fol­lowing requirements met: The connection cables of EUCHNER meet these 
requirements. The same requirement applies to the safety outputs.

 Ì All electrical outputs must have an adequate protective circuit for inductive 

loads. The outputs must be protected with a free-wheeling diode for this pur­pose. RC interference suppression units must not be used.

 Ì Power devices which are a powerful source of interference must be installed 

in a separate location away from the input and output circuits for signal pro­cessing. The cable routing for safety circuits should be as far away as pos­sible from the cables of the power circuits.

 Ì In order to avoid EMC interference, the physical environmental and operating 

conditions at the installation site of the device must comply with the require­ments according to the standard EN 60204-1:2006, section 4.4.2 (EMC).

 Ì Please pay attention to any interference fields in case of devices such as fre-

quency converters or induction heating systems. Observe the EMC instruc­tions in the manuals from the respective manufacturer.

9

Operating Instructions Safety Switch CES-AP-C.2-CH

Important:

If the device does not appear to function when operating voltage is applied (e.g. 
green STATE LED does not flash), the safety switch must be returned unopened 
to the manufacturer.

Notes for operation with safe control systems

Important:

Devices with start button and feedback loop are not suitable for connection to 

safe control systems.

Please observe the following requirements for connection to safe control systems:

 Ì Use a common power supply for the control system and the connected safety 

switches. 

 Ì A clocked power supply must not be used for UB. Tap the supply voltage 

directly from the power supply unit. If the supply voltage is connected to a 
terminal of a safe control system, this output must provide sufficient electrical 
current.

Important:

 Ì Outputs OA and OB can be connected to the safe inputs of a control system. 

Prerequisite: The input must be suitable for clocked safety signals (OSSD sig­nals, e.g. from light curtains). The control system must tolerate clock pulses 
on the input signals. This normally can be set up by parameter assignment in 
the control system. Observe the notes of the control system manufacturer. 
For the pulse duration of your safety switch, please refer to the section Typical
system times on page 18.

A detailed example of connecting and setting the parameters of the control system 
is available for many devices at www.euchner.de in the download area » Applications 
» CES. The features of the respective device are dealt with there in greater detail.

Devices for direct connection to IP65 field modules

The version CES-AP-...-SB-... (M12, 5-pin; pin 5 not assigned) is optimized for con­nection to decentralized peripheral systems, such as the ET200pro series from 
Siemens. The devices are assigned parameters and connected like an OSSD (e.g. 
like light curtains).

The 5-pin M12 plug connector can be connected directly to the socket of an IP65 
field module (e.g. ET200pro) with aid of the connection cables on page 22. If fly­ing leads are used, connection to IP20 input and output modules (e.g. ET200s) is 
naturally also possible.

Observe the following notes prior to connection:

 Ì Parameter assignment might be required for the input/output modules (see 

application example at www.euchner.de in the area Download ›› Applications 
›› CES).

 Ì Additionally observe notes from the control system manufacturer where nec-

essary.

10

Operating Instructions Safety Switch CES-AP-C.2-CH

Safety in case of faults

Caution!

 Ì The operating voltage U

 is reverse polarity protected. 

B

Ì The contacts OA/OB are short circuit proof.
 Ì A short circuit between OA and OB is detected by the switch. 
 Ì A short circuit in the cable can be excluded by laying the cable with protection.

Fuse protection for power supply

The power supply must be provided with fuse protection depending on the current 
required for the outputs. The following rules apply:

Max. current consumption of a switch I

I

   = IUB + I

max

   = Switch operating current (30 mA)

I

UB

   = Monitoring output load current (max. 50 mA)

I

OUT

 = Load current safety outputs OA + OB (2 x max. 150 mA)

I

OA+OB

OUT

 + I

OA+OB

max

Requirements for connection cables

Risk of damage to equipment or malfunctions as a result of incorrect connec-

tion cables.

Ì Use connection components and connection cables from EUCHNER
 Ì On the usage of other connection components, the requirements in the fol-

lowing table apply. EUCHNER provides no warranty for safe function in case 
of failure to comply with these requirements.

 Ì The connection cable must not be longer than 180 m in total.

Observe the following requirements with respect to the connection cables:

Parameter Value Unit

Wire cross-section min. 0.14 mm²
R max. 150 W/km
C max. 120 nF/km
L max. 0.65 mH/km
Recommended cable type LIYY 8x or 5x0.14 mm²

11

Operating Instructions Safety Switch CES-AP-C.2-CH

Connector assignment and wire color for safety
switch CES-AP-C.2-CH

Plug connector with latching connection, 6-pin

+UB

0V

OA

OB

OUT

NC

S1.1

S1.3

S1.2

S1.4

S1.5

S1.6

5

1

4

6

Coding lug

3

2

View on the connection side of the safety switch

Fig. 1: Connector assignment, plug connector with latching connection

Pin Designation Description Wire color

1 UB Power supply, DC 24 V  BN
2 OA Safety output, channel 1 WH
3 0V Ground, DC 0 V BU
4 OB Safety output, channel 2 BK
5 OUT Door monitoring output GY
6 - Not used PK

Connection cable with M12 plug connector, 5-pin

5-pin 5-pin,

+UB

0V

OA

OB

OUT

S1.1

S1.3

S1.2

S1.4

S1.5

View on the connection side of the safety switch

Fig. 2: Connector assignment, connection cable with M12 plug connector

Pin

5-pin

5-pin

Pin 5

used

1 1 UB Power supply, DC 24 V  BN
2 2 OA Safety output, channel 1 WH
3 3 0V Ground, DC 0 V BU
4 4 OB Safety output, channel 2 BK
5 - OUT Door monitoring output GY

Designation Description Wire color

not

pin 5 not used

+UB

0V

OA

OB

n.c.

S1.1

S1.3

S1.2

S1.4

S1.5

4

1

5

Coding lug

3

2

12

Operating Instructions Safety Switch CES-AP-C.2-CH

Connection

Connect the device as shown in Figure 3. The OUT output can be connected to a 
control system as a monitoring output.

Important:

The subsystem CES-AP complies with PL e in accordance with EN 13849-1. To 
integrate the subsystem in a category 3 or 4 structure, it is necessary to monitor 
the downstream load (the feedback loop must be monitored).
These examples show only an excerpt that is relevant for connection of the CES 
system. The example illustrated here does not show complete system planning. 
The user is responsible for safe integration in the overall system.

DC 24 V

-F1

-V1

-K1

UB1

0V3

OA2

OB4

NC6

OUT5

-V2

-K2

M8 plug-connector

(6-pin)

CES-AP-C.2-...

GND

Fig. 3: Connection example CES-AP-CR2-CH/CES-AP-CL2-CH

-M1

L2 L3

L1

M

~

3

13

Operating Instructions Safety Switch CES-AP-C.2-CH

Warning!

In case of an error, loss of the safety function through incorrect connection.

 Ì To ensure safety, both safety outputs (OA and OB) must always be evaluated. 

Single-channel use of the safety outputs leads to a loss of the category in 
accordance with EN ISO 13849-1.

DC 24 V

0V3

UB1

OA2

OB4

M8 plug-connector

A1

-K1

NC6

OUT5

A2

-K2

13

14

A1

A2

13

14

(6-pin)

M M

CES-AP-C.2-...

GND

-M1 -M2

Fig. 4: Example of incorrect connection.

Connecting a CES-AP-...-SB-... (pin 5 not assigned)
to a decentralized peripheral system (e.g. ET200pro
series from Siemens)

Observe the information in the section Particularities for operation on decentralized
peripheral systems on page 10 before connecting the device.

PLC

decentralized
periphery
e.g. ET 200pro

DI

2

1

5

4

UB1

FO1A2

S1: M12 plug-connector

CES-AP-...-SB-...

(5-pin)

3

0V3

n.c.5

FO1B4

DO

2

5

1

3

4

Fig. 5: Connection example for connection to decentralized peripheral systems

14

Operating Instructions Safety Switch CES-AP-C.2-CH

Setup

LED indicators

LED Color State Significance

illumi­nated

STATE

DIA

green

red

flashing

illumi­nated

Initial setup

1.  Apply operating voltage to the safety switch.

 ¨ The green LED flashes quickly. A self-test is performed during this time. Af-

ter this, the LED flashes cyclically one time and signals that it is in standby 
state.

Normal operation: Door closed

- Door open

- Actuator in boundary area 
(refer to the status table for further signal functions)

- Internal electronics fault

- Fault at the inputs/outputs

Warning!

2.  Move actuator to the read head (observe distance < S

).

ao

 ¨ The  green  LED  illu minates continuously  and  indic ates the detection  of  the 

actuator.

If the green LED is flashing at approx. 2 Hz, the actuator is in the boundary area. 
In this case the safety guard must be re-adjusted such that the actuator is com­pletely in the read area.

Functional check

After installation and any fault, the safety function must be fully checked. Proceed 
as follows:

Danger of fatal injury as a result of faults in installation and functional check.

 Ì Before carrying out the functional check, make sure that there are no per-

sons in the danger area.

 Ì Observe the valid accident prevention regulations.

1.  Switch on operating voltage.

 Ì The STATE LED then flashes at regular intervals.

2.  Close all safety guards.

Ì The machine must not start automatically.
 Ì The green STATE LED illuminates continuously.

3.  Enable operation in the control system.

4.  Open the safety guard.

 Ì The machine must switch off and it must not be possible to start it as long as 

the safety guard is open.

 Ì The green LED STATE flashes at regular intervals.

Repeat steps 2-4 for each safety guard.

15

Operating Instructions Safety Switch CES-AP-C.2-CH

System status table

LED indicator

output

Operating mode

Normal operation

Fault display

Key to symbols

Actuator/

door position

closed on

closed on

open off

closed off

X off

X off

Safety outputs

OA and OB

STATE (green)

flashes 

quickly

2 Hz

1 x Normal operation, door open

3 x Defective actuator (e.g. fault in code or code not readable)

4 x

5 x Internal fault (e.g. component faulty, data error)

10 Hz (8 s)

3 x

X Any state

State

DIA (red)

Normal operation, door closed

Normal operation, door closed, actuator in the boundary area ¨ Re-adjust door

Output error  
(e.g. short circuits, loss of switching ability)

LED not illuminated

LED illuminated

LED flashes for 8 seconds at 10 Hz

LED flashes three times, and this is then repeated

Important:

After  the  cause  has  been  remedied,  faults  can  generally  be  reset  by  opening 
and closing the door. If the fault is still displayed afterward, briefly interrupt the 
power supply. Please contact the manufacturer if the fault could not be reset after 
restarting.

If you do not find the displayed device status in the System status table, this indi-

cates an internal device fault. In this case, you should contact the manufacturer.

16

Operating Instructions Safety Switch CES-AP-C.2-CH

Technical data

Note:

If a product data sheet is included with the product, the information on the data 
sheet applies in case of discrepancies with the operating instructions.

Technical data for safety switch CES-AP-CR2-CH/
CES-AP-CL2-CH

Parameter Value Unit

min. typ. max.
Housing material Plastic PBT
Dimensions 95 x 30 x 12 mm
Weight 0.04 kg
Ambient temperature at U

- Plug connector with latching 
connection

-  With connection cable with M12 

plug connector

  - Connection cable laid rigidly - 40 - + 65

- Connection cable movable 0 - + 65
Storage temperature - 40 - + 70
Degree of protection IP69K

Safety class III
Degree of contamination  3
Installation position Any
Connection Plug connector or connection cable
Operating voltage U

ity protected, regulated, residual 
ripple < 5%)

For the approval according to 
the following applies

Current consumption 30 mA
Switching load according to 
External fuse

(operating voltage)
Safety outputs OA/OB Semiconductor outputs, p-switching, short circuit-proof

- Output voltage U(OA)/U(OB) 

  HIGH

  HIGH

  LOW

Switching current per safety output 1 - 150 mA
Utilization category according to

EN IEC 60947-5-2

Off-state current I
Monitoring output OUT

- Output voltage 0.8 x U

- Max. load - - 50 mA
Rated insulation voltage U
Rated impulse withstand voltage

U

imp

Resilience to vibration
Switching frequency - - 1 Hz
Repeat accuracy R  ≤ 10 %
EMC protection requirements In acc. with EN IEC 60947-5-3

Reliability values according to EN ISO 13849-1

Category 4
Performance Level PL e
PFH

d

Mission time 20 years

1)  Values at a switching current of 50 mA without taking into account the cable lengths.

 = 24 V DC

B

- 30 - + 65

(IP67 for version with M12 plug connector)

 (reverse polar-

B

Operation only with UL class 2 power supply, or equivalent 

0.25 - 1.5 A

1)

U(OA)

U(OB)

U(OA)/U(OB) 0 1

r

1)

i

U

-1.5 - U

B

Caution: outputs must be protected with a free-wheeling diode in 

Semiconductor output p-switching, short circuit-proof

- - 75 V

- - 1.5 kV

24 ± 15% (PELV) V DC

DC 24 V, class 2

DC-13 24 V 150 mA 

case of inductive loads.

B

In acc. with EN IEC 60947-5-2

1.8 x 10

measure

B

≤ 0.25 mA

- U

 -9

 / h

B

°C

V DC

V DC

17

Operating Instructions Safety Switch CES-AP-C.2-CH

30

23

Typical system times

Ready delay: After switching on, the unit carries out a self-test. The system is 

ready for operation only after this time.

Switch-on time of safety outputs: The max. reaction time  from  the  moment 
when the actuator is at the operating distance (safety door closed) to the moment 
when the safety outputs switch on T

Risk time according to EN 60947-5-3: If an actuator moves outside the op­erating distance, the safety outputs OA and OB are deactivated after a maximum 
of 260 ms.

Difference time: The safety outputs OA and OB switch with a slight time offset. 
They have the same signal state at the latest after a difference time of 10 ms.

Clock pulses at the safety outputs: The device generates its own clock signal 
on the output lines OA/OB. A downstream control system must tolerate these test 
pulses, which may have a length of up to 400 µs.

This can usually  be  set up in  the  control systems by  parameter assignment. If 
parameter assignment is not possible for your control system or if shorter clock 
pulses are required, please contact our support organization.

 is 400 ms.

on

Dimension drawings and connector assignments

Safety switch CES-AP-CR2-CH...

Connection cable with M12 

plug connector

Length of cable piece:

200 mm

Safety switch CES-AP-CL2-CH...

with  

connection cable

Active face

12

6

3

4,25

LEDs

11

19,5

6,9

5,5

Ø

Active face

DIA

75,5

95

+0,5

85

STATE

23

Active face

12

6

95

+0,5

85

4,4

LEDs

3

4,25

with  

connection cable

Connection cable  

with M12 plug connector

Fastening lug  

with reinforcement plate

4,4

30

DIA

STATE

Active face

Fastening lug  

with reinforcement plate

75,5

11

19,5

6,9Ø

5,5

Length of cable piece:

200 mm

18

Operating Instructions Safety Switch CES-AP-C.2-CH

75,5

12

19,5

75,5

30

Technical data for actuator CES-A-BLN-...

Parameter Value Unit

min. typ. max.

Housing material Plastic PBT
Dimensions

- CES-A-BLN-R2/CES-A-BLN-L2

- CES-A-BLN-U2

Weight

- CES-A-BLN-R2/CES-A-BLN-L2

- CES-A-BLN-U2

Ambient temperature - 40 - + 70 °C

Degree of protection  
acc. to EN IEC 60529

Installation position Active face opposite read head

Power supply Inductive via read head

Dimension drawing

CES-A-BLN-R2 CES-A-BLN-U2

95 x 30 x 12
55 x 30 x 12

0.04

0.02

IP69K

mm

kg

Fastening lug  

with reinforcement plate

11

19,5

4,25

3

Active face

Active face

Active face

4,25

30

+0,5

85
95

4,4

11

35

45

3,5

12

55

4,4

30

Fastening lug  

with reinforcement plate

Active 
face

CES-A-BLN-L2

Fastening lug  

Active face

4,4

+0,5

85
95

with reinforcement plate

11

19,5

4,25

3

12

Active face

19

Operating Instructions Safety Switch CES-AP-C.2-CH

Switching distances

Operating distance for center offset m = 0

(only in combination with actuator CES-A-BLN-...)

Parameter Value Unit

min. typ. max.

Switch-on distance - 15 -

Assured switch-on distance s

Switching hysteresis 

Assured switch-off distance s

- in x/z direction

1)

ao 

1)

ar

- in y direction

Typical operating distance

(only in combination with actuator CES-A-BLN-...)

10 - -

1 2 -

-

-

Y
40

35

30

25

-30

-25

15

20

X

20

15

10

5

5

5

10

-5

-10

-15

-20

-25

-30

-35

-40

mm

-

-

-20

-15

-10

-5

10

15

20

25

40
60

30

Z

For a side approach direction for the actuator and safety switch, a minimum distance of s = 6 mm 

must be maintained so that the operating distance of the side lobes is not entered.

Fig. 6: Typical operating distance

20

Operating Instructions Safety Switch CES-AP-C.2-CH

Technical data for actuator CES-A-BDN

Parameter Value Unit

min. typ. max.

Housing material Macromelt PA-based plastic
Dimensions 26 x ∅ 6 mm

Weight 0.005 kg

Ambient temperature - 40 - + 70 °C

Degree of protection  
acc. to EN IEC 60529

Installation position Active face opposite read head

Power supply Inductive via read head

1) With flush installation

Dimension drawing

operating distance

IP67 / IP69K 

1)

Installation options

6

Caution!

* min.
30
Ø

+

0,1

6,1

0

+

0,5

26

30

*

0

30

*

x

y

z

* metal-free zone

Do not mount at temperatures below 0 °C.
The actuator can be damaged during mounting.

Switching distances

Operating distance for center offset m = 0

(only in combination with actuator CES-A-BDN-...)

Parameter Value Unit

min. typ. max.

Switch-on distance - 19 -

Assured switch-on distance s

Switching hysteresis 

1)

Assured switch-off distance s

- in x/z direction

- in y direction

1)

ao 

ar

14 - -

- 2 -

-

-

-

-

40
60

mm

21

Operating Instructions Safety Switch CES-AP-C.2-CH

Ordering information and accessories

Designation Version Order

CES-AP-CR2-CH-SF-100775

CES-AP-CL2-CH-SF-104509

CES-AP-CR2-CH-SB-106550

CES-AP-CL2-CH-SB-106551

CES-AP-CR2-CH-L05-105600

CES-AP-CL2-CH-L05-105602

CES-AP-CR2-CH-L10-106189

CES-AP-CL2-CH-L10-106190

CES-AP-CR2-CH-L20-106193

CES-AP-CL2-CH-L20-106194

CES-AP-CR2-CH-SB-109168

CES-AP-CL2-CH-SB-109167

Connection cable  
with plug connector  
with latching connection, 6-pin

Connection cable  
with M12 plug connector, 5-pin

Connection cable  
with M12 plug connector, 5-pin

Actuator CES-A-BLN-R2 95 mm x 30 mm x 12 mm, door hinge right 100776

Actuator CES-A-BLN-L2 95 mm x 30 mm x 12 mm, door hinge left 104510

Actuator CES-A-BLN-U2 55 mm x 30 mm x 12 mm 103450

Actuator CES-A-BDN-06

multicode, door hinge right, connection cable PUR with M12 

connection cable PUR with M12 plug connector, 5-pin

connection cable PUR with M12 plug connector, 5-pin, 

connection cable PUR with M12 plug connector, 5-pin

multicode, door hinge right,

plug connector with latching connection, 6-pin

multicode, door hinge left,

plug connector with latching connection, 6-pin

plug connector, 5-pin

multicode, door hinge left, 

multicode, door hinge right, 

connection cable PVC, length 5 m

multicode, door hinge left, 

connection cable PVC, length 5 m

multicode, door hinge right, 

connection cable PVC, length 10 m

multicode, door hinge left, 

connection cable PVC, length 10 m

multicode, door hinge right, 

connection cable PVC, length 20 m

multicode, door hinge left, 

connection cable PVC, length 20 m

multicode, door hinge right, 

pin 5 not used

multicode, door hinge left, 

pin 5 not used

5 m, PVC 103556 

10 m, PVC 103557 

15 m, PVC 103558 

20 m, PVC 103559 

25 m, PVC 103560 

5 m, PVC 100183 

10 m, PVC 100184 

20 m, PVC 100185 

5 m, PVC 100180

10 m, PVC 100181

20 m, PVC 100182

26 mm x ∅ 6 mm 104730

No.

100775

104509

106550

106551

105600

105602

106189

106190

106193

106194

109168

109167

22

Operating Instructions Safety Switch CES-AP-C.2-CH

Inspection and service

Warning!

Loss of the safety function because of damage to the system.
In case of damage, the related component must be replaced completely. 
Only accessories  or spare parts that can be ordered from EUCHNER may be

replaced.

Regular inspection of the following is necessary to ensure trouble-free long-term 
operation:

Ì Check the switching function (see section Functional check)
 Ì Check the secure fastening of the devices and the connections
 Ì Check for soiling

No servicing is required, repairs to the device are only allowed to be made by the 
manufacturer.

Note:

Service

The year of manufacture can be seen in the lower right corner of the rating plate. 
The current version number in the format (V X.X.X) can also be found on the device.

The safety door must be re-adjusted when the device indicates that the actuator 
is in the boundary area.

If service support is required, please contact:

EUCHNER GmbH + Co. KG

Kohlhammerstraße 16

D-70771 Leinfelden-Echterdingen

Service telephone:

[phone]

E-mail:

[e-mail]

Internet:

www.euchner.de

23

Operating Instructions Safety Switch CES-AP-C.2-CH

Declaration of conformity

24

Operating Instructions Safety Switch CES-AP-C.2-CH

25

More than safety.

Euchner GmbH + Co. KG
Kohlhammerstraße 16
D-70771 Leinfelden-Echterdingen

[e-mail]
www.euchner.de

Edition:
103913-07-01/13
Title: 
Operating Instructions Safety Switch CES-AP-C.2-CH 
(translation of the original operating instructions)
Copyright:
© EUCHNER GmbH + Co. KG, 01/2013

Subject to technical modifications; no responsibility  
is accepted for the accuracy of this information.