EUCHNER CES-I-AR-.-C04 Series User manual

EN
Operating Instructions
Non-Contact Safety Switch
CES-I-AR-.-C04/C14-… (Unicode/Multicode)

Operating Instructions
Non-Contact Safety Switch CES-I-AR-.-C04/C14-…
2(Translation of the original operating instructions) 2119563-12-03/20
Contents
1. About this document............................................................................................. 4
1.1. Scope............................................................................................................................................4
1.2. Target group ..................................................................................................................................4
1.3. Key to symbols...............................................................................................................................4
1.4. Supplementary documents ..............................................................................................................4
2. Correct use .......................................................................................................... 5
3. Description of the safety function .......................................................................... 6
4. Exclusion of liability and warranty ......................................................................... 6
5. General safety precautions ................................................................................... 6
6. Function............................................................................................................... 7
6.1. Door monitoring output ...................................................................................................................7
6.2. Diagnostic output ...........................................................................................................................7
6.3. Limit-range monitoring ....................................................................................................................7
6.4. Switching states .............................................................................................................................7
7. ATEX .................................................................................................................... 8
7.1. Technical data for housing guard AM-C-C04-EX-137528 .....................................................................9
7.1.1. Dimension drawing of housing guard AM-C-C04-EX-137528...................................................9
7.2. Mounting........................................................................................................................................9
8. Mounting............................................................................................................ 10
9. Electrical connection .......................................................................................... 12
9.1. Notes about .........................................................................................................................13
9.2. Safety in case of faults..................................................................................................................13
9.3. Fuse protection for power supply...................................................................................................13
9.4. Requirements for connecting cables...............................................................................................13
9.5. Maximum cable lengths.................................................................................................................14
9.5.1. Determining cable lengths using the example table.............................................................15
9.6. Connector assignment of safety switch CES-I-AR-.-C04.....................................................................16
9.7. Terminal assignment of safety switch CES-I-AR-.-C14........................................................................16
9.8. Connector assignment of Y-distributor............................................................................................17
9.9. Connection of a single AR device ...................................................................................................18
9.10. Connection of several devices in a switch chain ..............................................................................19
9.11. Information on operation on an AR evaluation unit............................................................................21
9.12. Notes on operation with safe control systems.................................................................................21

3
2119563-12-03/20 (Translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-I-AR-.-C04/C14-…
EN
10. Setup ................................................................................................................. 23
10.1. LED displays ................................................................................................................................23
10.2. Teach-in function for actuator (only for unicode evaluation) ...............................................................23
10.2.1. Preparing device for the teach-in operation and teaching-in actuator ....................................23
10.2.2. Teach-in function with series connection, replacing and teaching in device ............................24
10.3. Functional check...........................................................................................................................24
10.3.1. Electrical function test......................................................................................................24
11. System status table CES-I-AR-….......................................................................... 25
12. Technical data .................................................................................................... 26
12.1. Technical data for safety switch CES-I-AR-C04-….............................................................................26
12.1.1. Dimension drawing of safety switch CES-I-AR-C04-…...........................................................27
12.2. Technical data for safety switch CES-I-AR-.-C14-… ...........................................................................28
12.2.1. Dimension drawing of safety switch CES-I-AR-C14-…...........................................................29
12.3. Typical system times.....................................................................................................................30
12.4. Technical data for actuator CES-A-BBN-C04/CES-A-BBN-C04-EX-137527...........................................31
12.4.1. Dimension drawing...........................................................................................................31
12.4.2. Operating distances .........................................................................................................31
12.4.3. Typical actuating range in installation position A .................................................................32
12.5. Technical data for actuator CES-A-BDN-06 ......................................................................................33
12.5.1. Dimension drawing...........................................................................................................33
12.5.2. Operating distances .........................................................................................................33
12.6. Technical data for actuator CES-A-BBN-161502...............................................................................34
12.6.1. Dimension drawing...........................................................................................................34
12.6.2. Operating distances .........................................................................................................34
12.7. Technical data for actuator CES-A-BBN-C14-160441........................................................................35
12.7.1. Dimension drawing...........................................................................................................35
12.7.2. Operating distances .........................................................................................................36
12.7.3. Typical actuating range in installation position A .................................................................37
13. Ordering information and accessories................................................................. 38
14. Inspection and service ........................................................................................ 38
15. Service .............................................................................................................. 38
16. Declaration of conformity ................................................................................... 39

Operating Instructions
Non-Contact Safety Switch CES-I-AR-.-C04/C14-…
4(Translation of the original operating instructions) 2119563-12-03/20
1. About this document
1.1. Scope
These operating instructions are valid for all CES-I-AR-.-C04/C14-… These operating instructions, the document Safety
information and any enclosed data sheet form the complete user information for your device.
1.2. Target group
Design engineers and installation planners for safety devices on machines, as well as setup and servicing staff possessing
special expertise in handling safety components.
1.3. Key to symbols
Symbol/depiction Meaning
Printed document
Internet
www Document is available for download at www.euchner.com
DANGER
WARNING
CAUTION
Safety precautions
Danger of death or severe injuries
Warning about possible injuries
Caution slight injuries possible
NOTICE
Important!
Notice about possible device damage
Important information
Tip Useful information
1.4. Supplementary documents
The overall documentation for this device consists of the following documents:
Document title
(document number) Contents
Safety information
(2525460) Basic safety information
Operating instructions
(2119563) (this document)
Internet
www
Possibly enclosed data
sheet Item-specic information about deviations or additions
Important!
Always read all documents to gain a complete overview of safe installation, setup and use of the
device. The documents can be downloaded from www.euchner.com. For this purpose enter the doc.
no. in the search box.

5
2119563-12-03/20 (Translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-I-AR-.-C04/C14-…
EN
2. Correct use
Safety switches series CES-I-AR are interlocking devices without guard locking (type 4). The device meets the requirements
according to ENIEC60947-5-3. Devices with unicode evaluation possess a high coding level, devices with multicode eval-
uation possess a low coding level.
In combination with a movable guard and the machine control, this safety component prevents dangerous machine functions
from occurring while the guard is open. A stop command is triggered if the guard is opened during the dangerous machine
function.
This means:
ÌStarting commands that cause a dangerous machine function must become active only when the guard is closed.
ÌOpening the guard triggers a stop command.
ÌClosing a guard must not cause automatic starting of a dangerous machine function. A separate start command must
be issued. For exceptions, refer to ENISO12100 or relevant C-standards.
Before the device is used, a risk assessment must be performed on the machine, e.g. in accordance with the following
standards:
ÌENISO13849-1
ÌENISO12100
ÌIEC62061
Correct use includes observing the relevant requirements for installation and operation, particularly based on the following
standards:
ÌENISO13849-1
ÌENISO14119
ÌEN60204-1
The safety switch is only allowed to be operated in conjunction with the intended EUCHNER CES actuators and the related
connection components from EUCHNER. On the use of different actuators or other connection components, EUCHNER
provides no warranty for safe function.
Connection of several devices in an AR switch chain is permitted only using devices intended for series connection in an AR
switch chain. Check this in the instructions of the device in question.
A maximum of 20 safety switches are allowed to be operated in a switch chain.
Important!
ÌThe user is responsible for the proper 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.
ÌIt is only allowed to use components that are permissible in accordance with the table below.
Table 1: Possible combinations for CES components
Safety switch
Actuator
CES-A-BBN-C04-115271 CES-A-BDN-06-104730 CES-A-BBN-161502 CES-A-BBN-C14-160441
CES-I-AR-.-C04-… –
CES-I-AR-.-C14-… – –
Key to symbols Combination possible
NOTICE
The devices can be operated on an AR evaluation unit. Refer to the operating instructions for the
relevant AR evaluation unit for more information.

Operating Instructions
Non-Contact Safety Switch CES-I-AR-.-C04/C14-…
6(Translation of the original operating instructions) 2119563-12-03/20
3. Description of the safety function
Devices from this series feature the following safety functions:
Monitoring of the guard position
(interlocking device according to ENISO14119)
ÌSafety function:
- The safety outputs are switched off when the guard is open (see chapter 6.4. Switching states on page 7).
ÌSafety characteristics: category, Performance Level, PFHD(see chapter 12. Technical data on page 26).
4. Exclusion of liability and warranty
In case of failure to comply with the conditions for correct use stated above, or if the safety regulations are not followed,
or if any servicing is not performed as required, liability will be excluded and the warranty void.
5. General safety precautions
Safety switches fulll personnel protection functions. Incorrect installation or tampering can lead to fatal injuries to personnel.
Check the safe function of the safeguard particularly
Ìafter any setup work
Ìafter the replacement of a system component
Ìafter an extended period without use
Ìafter every fault
Independent of these checks, the safe function of the safeguard should be checked at suitable intervals as part of the
maintenance schedule.
WARNING
Danger to life due to improper installation or due to bypassing (tampering). Safety components fulll
a personnel protection function.
ÌSafety components must not be bypassed, turned away, removed or otherwise rendered ineffec-
tive. On this topic pay attention in particular to the measures for reducing the possibility of bypass-
ing according to ENISO14119:2013, section 7.
ÌThe switching operation must be triggered only by actuators designated for this purpose.
ÌPrevent bypassing by means of replacement actuators (only for multicode evaluation). For this
purpose, restrict access to actuators and to keys for releases, for example.
ÌMounting, electrical connection and setup only by authorized personnel possessing the following
knowledge:
- specialist knowledge in handling safety components
- knowledge about the applicable EMC regulations
- knowledge about the applicable regulations on operational safety and accident prevention.
Important!
Prior to use, read the operating instructions and keep these in a safe place. Ensure the operating
instructions are always available during mounting, setup and servicing. For this reason you should
archive a printed copy of the operating instructions. You can download the operating instructions from
www.euchner.com.

7
2119563-12-03/20 (Translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-I-AR-.-C04/C14-…
EN
6. Function
The safety switch monitors the position of movable guards. The safety outputs are switched on/off when the actuator is
moved to/removed from the actuating range.
The system consists of the following components: coded actuator (transponder) and switch.
Whether the device learns the complete actuator code (unicode) or not (multicode) depends on the respective version.
ÌDevices with unicode evaluation: The actuator must be assigned to the safety switch by a teach-in operation so that
it is detected by the system. This unambiguous assignment ensures a particularly high level of protection against tam-
pering. The system thus possesses a high coding level.
ÌDevices with multicode evaluation: Unlike systems with unique code detection, on multicode devices a specic code
is not requested 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 taught-in code in the safety switch
(unique code detection). The system possesses a low coding level.
ÌDevices with xcode evaluation: For devices of the xcode version, a permanently assigned actuator of series CES-
A-BBN is supplied with the device. The device can be operated only with this one actuator. No additional actuators can
be taught in. This unambiguous assignment ensures a particularly high level of protection against tampering.
When the guard is closed, the actuator is moved towards the safety switch. When the operating distance is reached, power
is supplied to the actuator by the switch and data are transferred.
If a permissible code is detected, the safety outputs are switched on.
The safety outputs are turned off when the guard is opened.
In the event of a fault in the safety switch, the safety outputs are switched off and the DIA LED illuminates red. The occurrence
of faults is detected at the latest on the next demand to close the safety outputs (e.g.on starting).
6.1. Door monitoring output
The door monitoring output is switched on as soon as a valid actuator is detected in the actuating range.
6.2. Diagnostic output
The diagnostic output is switched on in the event of a fault (switch-on condition as for DIA LED).
6.3. Limit-range monitoring
If the safety door with the actuator should settle over time, the actuator can drift out of the read head actuating range. The
device recognizes this situation and indicates that the actuator is in the limit range by ashing the STATE LED. This allows
the safety door to be readjusted in time. Also see chapter 11. System status table CES-I-AR-… on page 25.
6.4. Switching states
The detailed switching states for your switch can be found in the system status table (see chapter 11. System status table
CES-I-AR-… on page 25). All safety outputs, monitoring outputs and display LEDs are described there.
Guard closed
(actuator in the actuating range and permissible
code detected)
Guard open
(actuator not in the actuating range)
Safety outputs FO1A and FO1B on off
Monitoring output OD on off

Operating Instructions
Non-Contact Safety Switch CES-I-AR-.-C04/C14-…
8(Translation of the original operating instructions) 2119563-12-03/20
7. ATEX
Safety switches from series CES-I-AR-.-C04… can be used in potentially explosive atmospheres when equipped with housing
guard AM-C-C04-EX-137528 available as an accessory.
Correct use includes observing the relevant requirements for installation and operation, particularly based on the following
standards:
ÌEN1127-1
ÌEN60079-0
ÌEN60079-11
ÌEN60079-14
ÌEN60079-7
ÌEN60079-31
The safety switch is allowed to be operated only in conjunction with the intended actuator CES-A-BBN-C04-EX-137527 from
EUCHNER and the related connection components from EUCHNER. On the use of different actuators or other connection
components, EUCHNER provides no warranty for safe function.
Safety switches with ATEX rating from EUCHNER are not safety devices as dened by the ATEX Directive.
Important!
ÌIn order to achieve the explosion protection stated, all the conditions in the operating instructions
must be met. HIGH RISK product.
ÌDevices with ATEX rating may be operated only with actuators that also have an ATEX rating for
the same zone.
ÌUse connection components and connecting cables from EUCHNER.
ÌThe connecting cable must be laid such that it is protected against mechanical damage.
ÌIn addition, a mechanical barrier is to be provided on the connecting cable as per EN60079-14,
section 9.3.9, to prevent ame propagation from the non-potentially explosive atmosphere to the
potentially explosive atmosphere.
ATEX rating
Housing guard AM-C-C04-EX-137528 in combination with safety switch CES-I-AR-.-C04
II3G Ex ec IIB T6 Gc X
II3D Ex tc IIIC T80°C Dc X
X= It is essential to mount the housing guard to protect the housing. 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).
Actuator CES-A-BBN-C04-EX-137527
II3G Ex ic IIC T6 Gc
II3D Ex ic IIIC T85°C Dc X
Dc X = To prevent electrostatic charging, do not subject the actuator to any processes that generate a large amount of
charge.
Permanently and inseparably connect the actuator to the guard using the non-removable screws supplied.
To prevent electrostatic charging:
ÌDo not subject the switch to any processes that generate a large amount of charge.
ÌClean only with a damp cloth!

9
2119563-12-03/20 (Translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-I-AR-.-C04/C14-…
EN
Protection against mechanical effects on the switch:
ÌFit the switch on a at surface. Install switch so that the rear of the housing is entirely covered in order to protect it from
mechanical damage through impact.
ÌAll connecting cables and plug connectors must be laid such that they are protected against mechanical damage.
ÌThe connecting cable must be laid rigidly; it is not permissible to lay the cable so that it can move (e.g. in a drag chain).
No tools (e.g. grinding or cutting devices) in accordance with DINEN1127-1, Annex A, point b) may be used.
If damage or wear is found, the complete switch including housing guard and actuator must be replaced. Replacement of
individual parts or assemblies is not permitted.
The supplied type label must be afxed on the safety switch.
On use in potentially explosive atmospheres, there is a danger of explosion due to electrical sparks.
ÌNever connect or disconnect connector when live.
7.1. Technical data for housing guard AM-C-C04-EX-137528
Parameter Value Unit
min. typ. max.
Housing material Plastic PA 66-IGF33
Dimensions 75 x 30 x 20 mm
Weight 0.02 kg
Ambient temperature - 25 - + 65 °C
Tightening torque of xing screw in combination with CES-I-
AR-.-C04 - - 60 Ncm
7.1.1. Dimension drawing of housing guard AM-C-C04-EX-137528
F-F
2,8
7,2
5
20
75
30
32
F
F
7.2. Mounting
1
2
1Afx ATEX type label 2Place safety switch into the housing guard depending on alignment

Operating Instructions
Non-Contact Safety Switch CES-I-AR-.-C04/C14-…
10 (Translation of the original operating instructions) 2119563-12-03/20
8. Mounting
CAUTION
Safety switches must not be bypassed (bridging of contacts), turned away, removed or otherwise
rendered ineffective.
ÌObserve ENISO14119:2013, section 7, for information about reducing the possibilities for by-
passing an interlocking device.
NOTICE
Risk of damage to equipment and malfunctions as a result of incorrect installation.
ÌSafety switches and actuators must not be used as an end stop.
ÌObserve ENISO14119:2013, sections 5.2 and 5.3, for information about mounting the safety
switch and the actuator.
ÌFrom the assured release distance Sar, the safety outputs are safely shut down.
ÌWhen mounting several safety switches, observe the stipulated minimum distance to avoid mutual
interference.
min. 80 mm
min. 80 mm
CES-I-AR-.-C04-…
CES-I-AR-.-C14-…
ÌThe operating distances change during the mounting of the actuator as a function of the material
used for the guard.
ÌObserve direction of arrow on the device (see gure below).
B
C D
D
Permissible installation positions
A
A
CES-I-AR-.-C04-…
CES-I-AR-.-C14-…

11
2119563-12-03/20 (Translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-I-AR-.-C04/C14-…
EN
Note the following points:
ÌActuator and safety switch must be easily accessible for inspection and replacement.
ÌActuator and safety switch must be tted so that
- the front faces are at the minimum operating distance 0.8xSao or closer when the guard is closed (see chapter 12.
Technical data, sections Operating distances and Typical actuating range of the respective actuator). To avoid enter-
ing the area of possible side lobes, a minimum distance is to be maintained in case of a side approach direction. See
chapter 12. Technical data, section Typical actuating range for the related actuator.
- when the guard is open up to the distance Sar (assured release distance), a hazard is excluded.
- the actuator is positively mounted on the guard, e.g. by using the safety screws included.
- The safety screws cannot be removed or tampered with using simple means.
ÌPay attention to the maximum tightening torque for the safety switch and actuator mountings:
- CES-I-AR-.-C04-… / CES-A-BBN-C04-115271 0.8Nm 1)
- CES-A-BBN-161502 1.0Nm 1)
- CES-I-AR-.-C14-… / CES-A-BBN-C14-160441 2.0Nm 1)
ÌIn order to avoid damage, the connecting cable must be laid with protection in areas in which high-pressure cleaners are
used.
1) To prevent the threaded connection from loosening, effective screw locking must be provided in addition to the tightening torque.

Operating Instructions
Non-Contact Safety Switch CES-I-AR-.-C04/C14-…
12 (Translation of the original operating instructions) 2119563-12-03/20
9. Electrical connection
The following connection options are available:
ÌSeparate operation
ÌSeries connection with Y-distributors or the passive distribution module AC-DP-…-SA-… from EUCHNER (only with M12
plug connector)
ÌSeries connection, e.g. with wiring in the control cabinet
ÌOperation on an AR evaluation unit.
WARNING
In the event of a fault, loss of the safety function due to incorrect connection.
ÌTo ensure safety, both safety outputs must always be evaluated.
ÌMonitoring outputs must not be used as safety outputs.
ÌLay the connecting cables with protection to prevent the risk of short circuits.
CAUTION
Risk of damage to equipment or malfunctions as a result of incorrect connection.
ÌDo not use a control system with pulsing or switch off the pulsing function in your control system.
The device generates its own test pulses on the safety outputs. A downstream control system
must tolerate these test pulses, which may have a length of up to 1ms.
The test pulses are also output when the safety outputs are switched off.
Depending on the inertia of the downstream device (control system, relay, etc.), this can lead to
short switching processes.
ÌThe inputs on a connected evaluation unit must be positive switching, as the two outputs on the
safety switch deliver a level of +24V in the switched-on state.
ÌAll 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).
ÌAll 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.
ÌPower 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.
ÌTo avoid EMC interference, the physical environmental and operating conditions at the in-
stallation site of the device must comply with the requirements according to the standard
EN60204-1:2006, section 4.4.2 (EMC).
ÌPay attention to any interference elds from devices such as frequency converters or induction
heating systems. Observe the EMC instructions in the manuals from the respective manufacturer.
Important!
If the device does not appear to function when operating voltage is applied (e.g. green STATE LED
does not ash), the safety switch must be returned unopened to the manufacturer.

13
2119563-12-03/20 (Translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-I-AR-.-C04/C14-…
EN
9.1. Notes about
Important!
ÌThis device is intended to be used with a Class 2 power source in accordance with UL1310.
As an alternative an LV/C (Limited Voltage/Current) power source with the following properties can
be used:
- This device shall be used with a suitable isolating source in conjunction with a fuse in accordance
with UL248. The fuse shall be rated max. 3.3 A and be installed in the max. 30 V DC power
supply to the device in order to limit the available current to comply with the requirements.
Please note possibly lower connection ratings for your device (refer to the technical data)
ÌFor use and application as per the requirements of 1) a connecting cable listed under the UL
category code CYJV2 or CYJV must be used.
1) Note on the scope of the UL approval: the devices have been tested as per the requirements of UL508 and CSA/ C22.2 no. 14 (protection against electric shock
and re).
9.2. Safety in case of faults
ÌThe operating voltage UBis reverse polarity protected.
ÌThe safety outputs are short circuit-proof.
ÌA short circuit between the safety outputs is detected by the switch.
ÌA short circuit in the cable can be excluded by laying the cable with protection.
9.3. Fuse protection for power supply
The power supply must be provided with fuse protection depending on the number of switches and the current required for
the outputs. The following rules apply:
Max. current consumption of an individual switch Imax
Imax = IUB + IOD + IFO1A+FO1B
IUB = Switch operating current (35mA)
IOD = Load current of monitoring outputs (max. 50mA)
IFO1A+FO1B = Load current of safety outputs FO1A + FO1B (2 x max. 200mA)
Max. current consumption of a switch chain ΣImax
ΣImax = IFO1A+FO1B + nx(IUB + IOD)
n = Number of connected switches
9.4. Requirements for connecting cables
CAUTION
Risk of damage to equipment or malfunctions as a result of incorrect connecting cables.
ÌUse connection components and connecting cables from EUCHNER.
ÌOn the use of other connection components, the requirements in the following table apply.
EUCHNER provides no warranty for safe function in case of failure to comply with these require-
ments.
ÌObserve the maximum cable length of 200m.
Observe the following requirements with respect to the connecting cables:
Parameter Value Unit
Conductor cross-section, min. 0.14 … 0.34 mm²
R max. 150 W/km
C max. 120 nF/km
L max. 0.65 mH/km
Recommended cable type LIYY 8 x 0.34mm²

Operating Instructions
Non-Contact Safety Switch CES-I-AR-.-C04/C14-…
14 (Translation of the original operating instructions) 2119563-12-03/20
9.5. Maximum cable lengths
Switch chains are permitted up to a maximum overall cable length of 200m taking into account the voltage drop as a result
of the cable resistance (see table below with example data and case example).
SPS
PLC
l1l2
lmax =200 m
ln
umin = 24 V -10% un= 24 V -20%
5 x 0,34 mm2 5 x 0,34 mm2/
5 x 0,14 mm2
5 x 0,34 mm2
CES-I-AR # n CES-I-AR # n-1 CES-I-AR # 1
iout
n
Max. number of switches
IOD (mA)
Possible output current per channel FO1A/FO1B
l1(m)
Max. cable length from the last switch to the
control system
0.14mm² 0.34mm²
5
10 70 140
25 50 110
50 35 80
100 25 50
200 13 25
6
10 60 120
25 50 90
50 35 70
100 20 50
200 13 25
10
10 35 70
25 30 60
50 25 50
100 15 35
200 10 20

15
2119563-12-03/20 (Translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-I-AR-.-C04/C14-…
EN
9.5.1. Determining cable lengths using the example table
Example: 6 switches are to be used in series. Cabling with a length of 40m is routed from a safety relay in the control
cabinet to the last switch (#6). Cables with a length of 20m each are connected between the individual safety switches.
CES-I-AR # 6
Sicherheits-
relais
Safety Relay
CES-I-AR # 5 CES-I-AR # 4 CES-I-AR # 3 CES-I-AR # 2 CES-I-AR # 1
l1 = 40 m l2 = 5 x 20 m
lmax = 140 m
ln = 20 m
un= min. 19,2 V
iout = min. 75 mA
Figure 1: Circuit example with six CES-I-AR
A safety relay is connected downstream that consumes 75mA at each of the two safety inputs. This operates over the
whole temperature range with a voltage of 19.2V (corresponds to 24V -20%).
All the relevant values can now be determined using the example table:
1. Select the corresponding section in the column n (max. number of switches). In this case: 6 switches.
2. In column IOD (possible output current per channel FO1A/FO1B), nd a current greater than or equal to 75mA. In this
case: 100mA.
¨It is then possible to determine the maximum cable length from the last switch (#6) to the control system from column
l1. In this case, a length of 50m is permitted.
Result: The desired cable length l1of 40m is below the permitted value from the table. The overall length of the switch
chain lmax of 140m is less than the maximum value of 200m.
¨The planned application is therefore functional in this form.

Operating Instructions
Non-Contact Safety Switch CES-I-AR-.-C04/C14-…
16 (Translation of the original operating instructions) 2119563-12-03/20
9.6. Connector assignment of safety switch CES-I-AR-.-C04
1
7
6
5
4
3
2
8
8
2
7
6
1
3
4
5
UB
0V
FI1A
FI1B
FO1A
FO1B
OD
RST
View of connection side on the safety switch
Coding lug
Figure 2: Connector assignment of safety switch CES-I-AR
Pin Designation Description Conductor coloring
1 FI1B Enable input for channel 2 WH
2 UB Power supply, DC 24 V BN
3 FO1A Safety output, channel 1 GN
4 FO1B Safety output, channel 2 YE
5OD Monitoring output GY
6 FI1A Enable input for channel 1 PK
7 0V Ground, DC 0 V BU
8 RST Reset input RD
9.7. Terminal assignment of safety switch CES-I-AR-.-C14
Terminal assignment Designation Description Conductor coloring
RD
BN
BU
PK
WH
GN
YE
GY
+UB
0V
FI1A
FI1B
FO1A
FO1B
OD
RST
RST Reset input RD
UB Power supply, DC 24 V BN
0V Ground, DC 0 V BU
FI1A Enable input for channel 1 PK
FI1B Enable input for channel 2 WH
FO1A Safety output, channel 1 GN
FO1B Safety output, channel 2 YE
OD Monitoring output GY

17
2119563-12-03/20 (Translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-I-AR-.-C04/C14-…
EN
9.8. Connector assignment of Y-distributor
M12x1
max. 45
Ø 14,5
Strapping plug 097645
4-pin, plug
(gure similar)
Y-distributor with connecting
cable 111696 or 112395
Socket
Pin Socket
Pin Function
X2.1 UB
X2.2 FO1A
X2.3 0V
X2.4 FO1B
X2.5 RST
Pin Function
X3.1 UB
X3.2 FI1A
X3.3 0V
X3.4 FI1B
X3.5 RST
12
12
097627
45°
15,1
485
6
312
7
35,1
20,5
1
2
4
5
33
4
2
1
5
Mx1
Ø 14,6
Mx1
( )
Y-distributor
097627
Socket
Connector assignment of safety
switch CES-I-AR (8-pin plug) and
Y-distributor (8-pin socket)
Pin Function
X1.1 FI1B
X1.2 UB
X1.3 FO1A
X1.4 FO1B
X1.5 OD
X1.6 FI1A
X1.7 0V
X1.8 RST
Socket
M 12 x1
44
45 41
15
M 12 x1
15 15
M 12 x1
33
A
B
4
8
5
6
3
1
2
7
1
2
4
5
33
4
2
1
5
Length l
Order no. Length
l [mm]
111696 200
112395 1,000
Pin Function
X2.1 UB
X2.2 FO1A
X2.3 0V
X2.4 FO1B
X2.5 RST
Pin Function
X3.1 UB
X3.2 FI1A
X3.3 0V
X3.4 FI1B
X3.5 RST
Pin

Operating Instructions
Non-Contact Safety Switch CES-I-AR-.-C04/C14-…
18 (Translation of the original operating instructions) 2119563-12-03/20
9.9. Connection of a single AR device
If a single AR device is used, connect the device as shown in Figure 3. Monitoring outputs can be routed to a control system.
The switch can be reset via the RST input. To do this, a voltage of 24 V is applied to the RST input for at least 3 seconds.
The RST input must be connected to 0 V if it is not used.
WARNING
In the event of a fault, loss of the safety function due to incorrect connection.
ÌTo ensure safety, both safety outputs (FO1A and FO1B) must always be evaluated.
Important!
The example shows only an excerpt that is relevant for the connection of the CES system. The example
illustrated here does not show complete system planning. The user is responsible for safe integration
into the overall system. Detailed application examples can be found at www.euchner.com. Simply enter
the order number of your switch in the search box. You will nd all available connection examples for
the device in Downloads.
Safety
Outputs
Monitoring
Output
Read Head
-B1 UB
2
FI1A
6
FI1B
1
7
0V
5
OUT
3
FO1A
4
FO1B
RST
8
CES
Safety Inputs
24 V DC
GND
-F1
Connected
load
-S1
Figure 3: Connection example for separate operation of a CES-I-AR-…

19
2119563-12-03/20 (Translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-I-AR-.-C04/C14-…
EN
9.10. Connection of several devices in a switch chain
Important!
ÌAn AR switch chain may contain a maximum of 20 safety switches.
ÌThe example shows only an excerpt that is relevant for the connection of the CES system.
The example illustrated here does not show complete system planning. The user is responsi-
ble for safe integration into the overall system. Detailed application examples can be found at
www.euchner.com. Simply enter the order number of your switch in the search box. You will nd all
available connection examples for the device in Downloads.
The series connection is shown here based on the example of the version with plug connectors M12. The switches are con-
nected one behind the other with the aid of pre-assembled connecting cables and Y-distributors. If a safety door is opened or
if a fault occurs on one of the switches, the system shuts down the machine. A higher-level control system cannot, however,
detect which safety door is open or on which switch a fault has occurred with this connection technology. A special AR eval-
uation unit is required for this purpose (see chapter 9.11. Information on operation on an AR evaluation unit on page 21).
The series connection can also be realized via additional terminals in a control cabinet.
The safety outputs are permanently assigned to the respective safety inputs of the downstream switch. FO1A must be routed
to FI1A and FO1B to FI1B. If the connections are interchanged (e.g. FO1A to FI1B), the device will switch to the fault state.
Always use the RST input in series connections. All switches in a chain can be reset at the same time with this reset input.
To do this, a voltage of 24 V must be applied to the RST input for at least 3 seconds. If input RST is not used in your appli-
cation, it should be connected to 0 V.
Note the following on this aspect:
ÌA common signal must be used for all switches in the chain. This can be a changeover switch or the output of a control
system. A pushbutton is not suitable because the reset must always be connected to GND during operation (see switch
S1 in Figure 4 on page 20).
ÌReset must always be performed simultaneously for all switches of the chain.

Operating Instructions
Non-Contact Safety Switch CES-I-AR-.-C04/C14-…
20 (Translation of the original operating instructions) 2119563-12-03/20
Y-distributor
Terminating plug
1 3 5 2 4
1 6 2 78 5 3 4
5 2 4 1 3
RST
0V
FI1A
OUT
FO1B
FO1A
UB
FI1B
UB
FO1A
0V
FO1B
RST
UB
FI1A
0V
FI1B
RST
2 4 1UB
FI1A
FI1B
Safety Outputs
Read Head
Read Head
Safety Outputs
Safety InputsSafety Inputs
Y-distributor Y-distributor Y-distributor
Terminating plug
Eval Unit
Read Head
Safety Outputs
SafetyInputs
5
OUT
4
FO1B
2
UB
8
RST
6
FI1A
1
FI1B
7
0V
5
OUT
3
FO1A
4
FO1B
2
UB
8
RST
6
FI1A
1
FI1B
7
0V
0V
3
FO1A
4
FO1B
-S1
12
11 14
2
UB
8
RST
6
FI1A
1
FI1B
7
0V
5
OUT
3
FO1A
24
V
CES CESCES
Figure 4: Connection example for series connection with reset and changeover switch