EUCHNER CES-AH-C03-AE-LS User manual

EN
Operating Instructions
Non-Contact Safety Switch
CES-AH-C03-AE-LS (Unicode)

Operating Instructions
Non-Contact Safety Switch CES-AH-C03-AE-LS
2(Translation of the original operating instructions) 2105267-10-08/20
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
7. Mounting.............................................................................................................. 8
8. Electrical connection ............................................................................................ 9
8.1. General notes.................................................................................................................................9
8.2. Test pulses, pulsing and power control .............................................................................................9
8.3. Fault behavior.................................................................................................................................9
8.4. Automatic restart and start button .................................................................................................10
8.5. Safety in case of faults..................................................................................................................10
8.6. Fuse protection for power supply...................................................................................................10
8.7. Voltage drop on cables and switch.................................................................................................10
8.7.1. Calculation example .........................................................................................................10
8.8. Connecting cables and plug connectors .........................................................................................11
8.9. Connector assignment of safety switch CES-AH ..............................................................................12
8.10. Connection of the CES-AH .............................................................................................................12
9. Setup ................................................................................................................. 13
9.1. LED displays ................................................................................................................................13
9.2. Teach-in function for actuator.........................................................................................................13
9.2.1. Carrying out teach-in for a new actuator ............................................................................13
9.3. Functional check...........................................................................................................................14
10. System status table ............................................................................................ 15
11. Technical data .................................................................................................... 16
11.1. Technical data for safety switch CES-AH-C03-AE-LS .........................................................................16
11.2. Typical system times.....................................................................................................................18
11.3. Dimension drawing and connector assignment................................................................................19
11.4. Technical data for actuator CES-A-BRN ...........................................................................................20
11.4.1. Dimension drawing...........................................................................................................20
11.4.2. Operating distances.........................................................................................................21

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2105267-10-08/20 (Translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-AH-C03-AE-LS
EN
12. Ordering information and accessories................................................................. 22
13. Inspection and service ........................................................................................ 22
14. Service .............................................................................................................. 22
15. Declaration of conformity ................................................................................... 23

Operating Instructions
Non-Contact Safety Switch CES-AH-C03-AE-LS
4(Translation of the original operating instructions) 2105267-10-08/20
1. About this document
1.1. Scope
These operating instructions are valid for safety switch CES-AH-C03-AE-LS. 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
(2105267) (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
2105267-10-08/20 (Translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-AH-C03-AE-LS
EN
2. Correct use
Safety switches series CES-AH-C03-AE-LS are interlocking devices without guard locking (type 4). The device meets the
requirements according to ENIEC60947-5-3, except for section 8.6. Devices with unicode evaluation possess a high
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
Devices in the system family CES-AH... have special safety outputs that are suitable for the direct switching of large loads.
In appropriate applications it is therefore not necessary to connect power relays or contactors in between.
The device interrupts the supply of power to the load, if, e.g., the guard is open.
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.
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-BRN-100251
100 251
CES-AH-C03-AE-LS-... 32
Key to symbols
25 Combination possible, typ. operating distance 20 mm
Combination possible, guard locking for process protection
Combination possible, guard locking for personnel protection
Combination not permissible

Operating Instructions
Non-Contact Safety Switch CES-AH-C03-AE-LS
6(Translation of the original operating instructions) 2105267-10-08/20
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.
ÌSafety characteristics: category, Performance Level, PFHD(see chapter 11. Technical data on page 16).
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
2105267-10-08/20 (Translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-AH-C03-AE-LS
EN
6. Function
The safety switch CES-AH-C03-AE-LS complies with the following safety requirements:
ÌCategory 3 according to DIN ENISO 13849-1
ÌRedundant design of the circuit in the unit with self-monitoring
ÌThis means that the safety system still functions even if an internal component fails
ÌThe switching state of the semiconductor outputs is continuously monitored internally
The non-contact safety switch CES consists of three components: coded actuator, evaluation unit and read head.
The evaluation unit is integrated into a housing with the read head.
Each transponder actuator from EUCHNER features coding that far surpasses the requirements in ENISO14119 for a
type4 switch with high coding level. The code in an actuator cannot be reprogrammed.
The actuator must be assigned to the safety switch by a teach-in operation so that it is detected by the system. This unam-
biguous assignment ensures a particularly high level of protection against tampering.
The safety switch with integrated evaluation unit and read head is fastened to the xed part of the guard.
The actuator attached to the movable part of the guard is moved towards the read head tted in the safety switch by closing
the door. When the operating distance is reached, power is supplied to the actuator by the inductive read head and data
can be transferred.
The bit pattern read is compared with the code saved in the safety switch. If the data match, the safety outputs are enabled.
Due to the combination of dynamic polling of the actuator and the redundant, diverse design of the safety electronics with the
two feedback switching elements for each safety output, the safety switch will enter the safe state with every detectable fault.
The safety outputs shut down the safety circuits if the guard is opened. The state of the safety outputs is monitored internally
by two microprocessors.
For the safety outputs to switch on, there must be a voltage of UBon the START input. This voltage can be supplied either
using a jumper (automatic start) or using a start button.
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 a failure 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).

Operating Instructions
Non-Contact Safety Switch CES-AH-C03-AE-LS
8(Translation of the original operating instructions) 2105267-10-08/20
7. Mounting
CAUTION
Risk of damage to equipment as a result of incorrect installation. Safety switches must not be used
as a mechanical end stop.
ÌFit an additional end stop for the movable part of the guard.
Important!
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. 80mm
ÌIf the actuator is installed ush, the operating distances change as a function of the installation
depth and the guard material.
Operating
distance
Actuator
Operating
distance
Actuator
Flush mounting Surface mounting
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 section Actu-
ating ranges). For a side approach direction for the actuator a minimum distance must be maintained so that the actu-
ating range of the side lobes is not entered (see actuating range for the 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.

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2105267-10-08/20 (Translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-AH-C03-AE-LS
EN
8. Electrical connection
8.1. General notes
CAUTION
Risk of damage to equipment or malfunctions as a result of incorrect connection.
ÌThe switch was developed for special installation conditions in construction machines. The compa-
ny distributing the installation must verify conformity with the EMC directive, taking the applicable
standards into account. All conducted disturbances that, according to section 4.9 of EN13309,
can occur in power supplies must be ltered by upstream protective devices. Impermissibly high
voltage peaks on UB will damage the switch.
ÌTo avoid faults, the cable must be laid with protection.
ÌThe power for the operating voltage and for the inputs +LA and +LB must be provided from a
common power supply.
ÌAll the electrical connections must either be isolated from the mains supply by a safety trans-
former according ENIEC61558-2-6 with limited output voltage in the event of a fault, or by other
equivalent insulation measures.
ÌWith inductive loads there can be voltage spikes of up to -50 V lasting several milliseconds on
switching off the outputs.
ÌTo prevent overvoltages on the inputs and outputs for the safety circuits, inductive loads must be
connected with free-wheeling diodes (see chapter 8.10. Connection of the CES-AH on page 12).
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.
8.2. Test pulses, pulsing and power control
Important!
ÌIn operation the device regularly switches off the safety outputs for approx. 6 ms to check the
safe switching function. The loads connected must tolerate this behavior.
ÌA load connected is controlled using the safety paths +LA/LA and +LB/LB. The control voltage
can be pulsed for power control.
ÌDo not use a control system with pulsing to test the output cables or switch off the pulsing func-
tion in your control system.
8.3. Fault behavior
CAUTION
ÌIn the event of a fault in the safety switch, the safety circuit is switched off and the DIA LED illumi-
nates red.
ÌAfter approx. 5s the device performs a re-start.
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.

Operating Instructions
Non-Contact Safety Switch CES-AH-C03-AE-LS
10 (Translation of the original operating instructions) 2105267-10-08/20
8.4. Automatic restart and start button
Pay attention to the notes for the following applications:
Automatic start, with a jumper
(+24 V is continuously present at the START input)
¨The device restarts automatically after faults.
Manual start (start via start button)
¨The start button must be pressed after each restart.
ÌA sticking start button (fault due to welding, etc.) is not detected by the device and results in an automatic restart.
DANGER
Danger due to automatic start/restart.
An automatic start/restart can occur:
ÌOn closing the guard
ÌOn switching on the power supply
ÌOn automatic restart after the detection of a fault
ÌCheck carefully which start mode is suitable for your application.
ÌCheck whether additional measures are necessary to prevent an automatic restart.
8.5. Safety in case of faults
ÌThe operating voltage UBis reverse polarity protected.
ÌThe contacts +LA/LA and +LB/LB are short circuit-proof and protected against reverse polarity.
ÌTo prevent switching on of the load connected in the case of a short circuit between LA or LB and the operating voltage
UB, the cables must be laid rigidly and with protection.
8.6. Fuse protection for power supply
The power supply must be provided with fuse protection depending on the current required for the outputs. If both outputs
(LA and LB) are used, protect with a max. 10 A fuse.
8.7. Voltage drop on cables and switch
If a load is applied to the outputs, voltage drops will occur on the supply cables and on the switch.
The voltage drops are to be taken into account during the calculation of the power available in the load connected.
Parameter Value Unit
Maximum resistance of an output path 250 mW
Resistance for further connecting cable
(e.g. 7 x 1 mm², supply and return cables) 25 mW/m
Other connection resistances are to be taken into account as necessary.
8.7.1. Calculation example
Ì10 m cable from the switch to the supply/load
ÌSupply voltage on the 24 V connection
ÌLoad on channel A: 1 A
ÌLoad on channel B: 4 A

11
2105267-10-08/20 (Translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-AH-C03-AE-LS
EN
For channel A:
ÌVoltage drop on the switch
DU1= R x I = 250 mWx 1 A = 250 mV
ÌVoltage drop on the cable
DU2= Rlx s x I = 25 mW/m x 10 m x 1 A = 250 mV
ÌVoltage at the load
U = UB- DU1- DU2= 24 V - 0.25 V - 0.25 V = 23.5 V
For channel B:
ÌVoltage drop on the switch
DU1= R x I = 250 mWx 4 A = 1 V
ÌVoltage drop on the cable
DU2= Rlx l x I = 25 mW/m x 8 m x 4 A = 800 mV
ÌVoltage at the load
U = UB- DU1- DU2= 24 V - 1 V - 0.8 V = 22.2 V
8.8. Connecting cables and plug connectors
CAUTION
Risk of damage to equipment or malfunctions as a result of incorrect connecting cables.
ÌUse EUCHNER connectors.
ÌIf other connection components are used, the following recommendations apply. EUCHNER pro-
vides no warranty for safe function in case of failure to comply with these requirements.
ÌThe maximum cable length should not exceed 50 m.
Recommended connecting cable:
e.g. LiYY 7 x 1mm²,
Ölex classic 400P 7 x 0.75
Terminating plug for the mating side:
AMP Superseal series, manufacturer Tyco/AMP
Component AMP order number Required quantity
Socket contact
(for conductor cross-sections 0.75 ... 1.5
mm²)
183025-1 7
Socket housing 3-pin 282087-1 1
Socket housing 4-pin 282088-1 1
Individual core seals
depending on core diameter:
Total 7
1.4 ... 1.7 mm green 281934-4
1.8 ... 2.4 mm yellow 281934-2
2.6 ... 3.3 mm red 281934-3
Important!
It is imperative you use the original tools from the connector manufacturer for assembly and follow
the assembly instructions from the connector manufacturer.

Operating Instructions
Non-Contact Safety Switch CES-AH-C03-AE-LS
12 (Translation of the original operating instructions) 2105267-10-08/20
8.9. Connector assignment of safety switch CES-AH
X2
X1
4 3 2 1
123
View of connection side
Figure 1: Connector assignment of safety switch CES-AH
Plug Pin Designation Description Core color /
core number
X1
1 UB Power supply, DC 24 V BN / 3
2 0 V Ground, DC 0 V BU / 1
3 Start Start input WH / 2
X2
1 +LA Input for channel 1 GY / 6
2 LA Safety output, channel 1 PK / 7
3 +LB Input for channel 2 YE / 5
4 LB Safety output, channel 2 GN / 4
8.10. Connection of the CES-AH
GND
+UB
-F1
CES-AH-C03-AE-LS
UBX1.1
0VX1.2
StartX1.3 +LAX2.1
AMP Superseal
LAX2.2 +LBX2.3 LBX2.4
Load
2) 2)
3) 3)
1)
1) Load, e.g. valve coil, DC motor, ohmic load, etc.
2) In case of inductive loads, it is imperative free-wheeling diodes are used to protect the outputs on the safety switch.
3) Alternative connection of the free-wheeling diodes with inductive loads
Figure 2: Connection of CES-AH
CAUTION
ÌUse the alternative connection only if your specic application has been checked and approved by
EUCHNER.

13
2105267-10-08/20 (Translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-AH-C03-AE-LS
EN
CAUTION
ÌA short circuit between the cables on the safety outputs LA and LB and another cable must be
prevented.
ÌIn certain circumstances, fault exclusion as per EN13849-1, section 7.3, can be applied; see also
EN13849-2, section D.5.2.
ÌThe CES-AH represents a subsystem as per EN 13849-1 and complies with PL d. To integrate the
switch in a category 3 structure, it is necessary to monitor the downstream load (the feedback
loop must be monitored).
ÌThis example shows only an excerpt that is relevant for connection of the CES AH system. The ex-
ample illustrated here does not show complete system planning. The user is responsible for safe
integration into the overall system.
9. Setup
9.1. LED displays
LED Color State Meaning
STATE green
illumi-
nated Normal operation
ashing Teach-in operation or power-up
(for further signal function see status table)
DIA red illumi-
nated
- Internal electronics fault
- Fault at the inputs/outputs
9.2. Teach-in function for actuator
The actuator must be allocated to the safety switch using a teach-in function before the system forms a functional unit.
During a teach-in operation, the safety outputs are in high-resistance state, i.e. the system is in the safe state.
Important!
ÌThe safety switch disables the code of the preceding device if teach-in is carried out for a new
actuator. Teach-in is not possible again immediately for this device if a new teach-in operation is
carried out. The disabled code is deleted again in the safety switch only after a third code has
been taught.
ÌThe safety switch can be operated only with the last actuator taught-in.
ÌIf the switch detects an actuator that has already been taught when in teach-in standby state, this
state is ended immediately and the switch changes to normal state.
ÌIf the actuator to be taught-in is within the actuating range for less than 60 s, it will not be activat-
ed and the most recently taught-in actuator will remain saved.
9.2.1. Carrying out teach-in for a new actuator
1. Apply operating voltage to the safety switch.
¨The green LED ashes quickly (approx. 10 Hz).
A self-test is performed during this time (approx. 3 s). After this, the LED ashes cyclically three times and signals that
it is in standby state for teach-in.
Standby state for teach-in remains active for approx. 3 minutes.
2. Move new actuator to the read head (observe distance < Sao).
¨Teach-in operation starts, green LED ashes (approx. 1 Hz). During the teach-in operation, the safety switch checks
whether the actuator is a disabled actuator. Provided this is not the case, the teach-in operation is completed after
approx. 60 seconds, and the green LED goes out. The new code has now been stored, and the old code is disabled.
3. To activate the new actuator code from the teach-in operation in the safety switch, the operating voltage to the safety
switch must then be switched off for min. 3 seconds.

Operating Instructions
Non-Contact Safety Switch CES-AH-C03-AE-LS
14 (Translation of the original operating instructions) 2105267-10-08/20
9.3. Functional check
After installation and any fault, the safety function must be fully checked. Proceed as follows:
WARNING
Danger of fatal injury as a result of faults in installation and functional check.
ÌBefore carrying out the functional check, make sure that there are no persons in the danger zone.
ÌObserve the valid accident prevention regulations.
1. Switch on operating voltage.
ÌThe safety switch carries out a self-test.
The green STATE LED ashes for 3 s at 10 Hz.
The green STATE LED then ashes at regular intervals.
2. Close all guards.
ÌThe machine must not start automatically.
ÌThe green STATE LED illuminates continuously.
3. Enable operation in the control system.
4. Open the guard.
ÌThe machine must switch off and it must not be possible to start it as long as the guard is open.
ÌThe green STATE LED ashes at regular intervals.
Repeat steps 2-4 for each guard.

15
2105267-10-08/20 (Translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-AH-C03-AE-LS
EN
10. System status table
Operating mode
Actuator/door po- sition Safety outputs LA and LB
LED indicator
Output
State
STATE (green) DIA (red)
Self-test X off 10 Hz
(3 s) Self-test after power-up
Normal operation
closed on Normal operation, door closed
open off 1 x Normal operation, door open
open off 2 x Normal operation, door open, no actuator taught
Teach-in standby open off 3 x Door open, device is ready for teach-in for another actuator (only short time after power-up)
Setup closed off 1 Hz Teach-in operation
X off Positive acknowledgment after completion of teach-in operation
Fault display
X off 2 x Overload (e.g. short circuit on a safety output)
X off 3 x Over-temperature
X off 4 x Output fault (e.g. fault on a switching element)
X off 5 x Internal fault (e.g. component fault, data error) or short circuit at the outputs
Key to symbols
LED not illuminated
LED illuminated
10 Hz (8 s) LED ashes for 8 seconds at 10 Hz
3 x LED ashes three times
X Any state
Important!
If you do not nd the displayed device status in the system status table, this indicates an internal device
fault. In this case, you should contact the manufacturer.

Operating Instructions
Non-Contact Safety Switch CES-AH-C03-AE-LS
16 (Translation of the original operating instructions) 2105267-10-08/20
11. Technical data
NOTICE
If a data sheet is included with the product, the information on the data sheet applies.
11.1. Technical data for safety switch CES-AH-C03-AE-LS
Parameter Value Unit
min. typ. max.
Housing material PBT plastic
Dimensions 40 x 40 x 168 mm
Weight 0.45 kg
Ambient temperature at UB= DC24V -25 - +70 °C
Storage temperature -25 - +70
Degree of protection IP65/IP67
Safety class III
Degree of contamination 3
Installation orientation Any
Connection Connecting cable PUR 0.5m with connectors AMP Superseal
1 x 3-pin / 1 x 4-pin
Operating voltage UB(reverse polarity protected, regulated,
residual ripple < 5%)
9 - 32 V DC
Current consumption - - 150 mA
External fuse
(operating voltage, +LA and +LB) 0.25 - 10 A
Power supply for load U(+LA)/U(+LB) UB
Power supply for load via PWM
- Pulse frequency - - 1 kHz
- Mark/space ratio Ton 10 - 100 %
Safety outputs LA/LB Semiconductor outputs, p-switching, short circuit-proof
- Output voltage U(LA)/U(LB) 1)
HIGH U(LA) UB-1.5 - UBV DC
HIGH U(LB)
LOW U(LA)/U(LB) 0 4
Testing of the outputs
Test pulse length
- Test interval
-
10
-
-
6
-
ms
s
Switching current per safety output 30 - 4,000 mA
Utilization category acc. to EN60947-5-2 DC-13 24 V 4 A
Caution: Outputs must be protected by a free-wheeling diode in the case of inductive loads.
Start input START
HIGH 8 - UBV DC
LOW 0-2
Rated insulation voltage Ui- - 75 V
Rated impulse withstand voltage Uimp - - 1.5 kV
Rated conditional short-circuit current - - 100 A
Resilience to vibration Acc. to EN60947-5-2
Risk time - - 250 ms
Difference time between the two safety outputs - - 50 ms
Ready delay 2) - - 3 s
Dwell time 3) 0.5 - - s
Switching frequency - - 1 Hz
Repeat accuracy R acc. to ENIEC 60947-5-3 ≤10 %
Mounting distance between 2 switches or 2 actuators 80 - - mm
LED displays 2
STATE (green) and DIA (red)

17
2105267-10-08/20 (Translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-AH-C03-AE-LS
EN
Reliability values acc. to ENISO 13849-1
Category 3
Performance Level (PL) d
PFHD1.03 x 10-7 / h
Mission time 20 years
1) Values at a switching current of 4 A without taking into account the cable lengths.
2) After the operating voltage is switched on, the semiconductor outputs are switched off during the ready delay.
3) The dwell time of an actuator inside and outside the actuating range must be at least 0.5s to ensure reliable detection of internal faults in the evaluation unit (self-monitoring).

Operating Instructions
Non-Contact Safety Switch CES-AH-C03-AE-LS
18 (Translation of the original operating instructions) 2105267-10-08/20
11.2. Typical system times
Ready delay: After switching on, the device carries out a self-test for 3 s. The system is ready for operation only after
this time.
Risk time according to EN60947-5-3: If an actuator moves outside the actuating range, the safety outputs LA and LB
on the corresponding safety switch are deactivated at the latest after 250 ms.
Difference time: The safety outputs LA and LB switch with a slight time offset. They have the same signal state at the
latest after a difference time of 50 ms.
System times for reset after a fault and normal operation
Secondary conditions: UB = 24V
+LA permanently connected with UB
+ LB switched by control system
Actuator moved
t
Actuator
Start
LA
+LB
LB
DIA (LED red)
off
on
0 V
+24 V
0 V
+24 V
0 V
+24 V
0 V
+24 V
None
Detected
Start Fault detection Occurrence of a fault Restart Start Operational
No actuator Outputs switch off Start connected together Actuator detected
∆ t1∆ t2∆ t3∆ t4
Dt1= Fault detection time
Dt2= Fault time (5s; switch dwells in the fault state during this time)
Dt3= Power-up time (3s)
Dt4= Risk time (≤250ms, time from no actuator to outputs switch off)
Figure 3: System times for individual switches

19
2105267-10-08/20 (Translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-AH-C03-AE-LS
EN
11.3. Dimension drawing and connector assignment
PUR PVC
X2
4 3 2 1
X1
123
168
0,3
27,5
34,5
15
40
40,3
40
40
20
30
45,590
40
5,3
5,3
7,3
Cable length 2,000 mm
LED status indication View of connection side
Active face
Active face with approach
direction C
Active face with approach
direction A

Operating Instructions
Non-Contact Safety Switch CES-AH-C03-AE-LS
20 (Translation of the original operating instructions) 2105267-10-08/20
11.4. Technical data for actuator CES-A-BRN
Parameter Value Unit
min. typ. max.
Housing material PPS
Dimensions 80 x 40 x 15 mm
Weight 0.06 kg
Ambient temperature - 25 - + 70 °C
Degree of protection IP67
Installation orientation Active face opposite read head
Power supply Inductive via read head
11.4.1. Dimension drawing
Active face
Active face
40
80
10,3
5,5
1711
17 11
15
8,5