EUCHNER CES-A-5 Series User manual

EN
Operating Instructions
Non-Contact Safety Switch
CES-A-.5 Unicode/Multicode

Operating Instructions
Non-Contact Safety Switch CES-A-.5
2(translation of the original operating instructions) 2096580-16-11/22
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. Switching states .............................................................................................................................7
6.3. Block diagram ................................................................................................................................8
7. Changing the approach direction .......................................................................... 9
8. Mounting............................................................................................................ 10
9. Electrical connection .......................................................................................... 11
9.1. Notes about .........................................................................................................................12
9.2. Safety in case of faults..................................................................................................................12
9.3. Requirements for connecting cables...............................................................................................12
9.4. Connector assignment of safety switch CES-A-.5.............................................................................13
9.5. Correct connection .......................................................................................................................13
9.6. Connection example .....................................................................................................................14
10. Setup ................................................................................................................. 15
10.1. LED displays ................................................................................................................................15
10.2. Teach-in function for actuator (only for unicode evaluation) ...............................................................15
10.2.1. Carrying out teach-in for rst actuator (delivery state) .......................................................15
10.2.2. Carrying out teach-in for a new actuator...........................................................................16
10.3. Functional check...........................................................................................................................16
11. System status table ............................................................................................ 17

3
2096580-16-11/22 (translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-A-.5
EN
12. Technical data .................................................................................................... 18
12.1. Safety switch CES-A-.5 ..................................................................................................................18
12.1.1. Technical data for safety switch CES-A-.5.........................................................................19
12.1.2. Typical system times......................................................................................................20
12.2. Actuator CES-A-BPA ......................................................................................................................21
12.2.1. Technical data ...............................................................................................................21
12.2.2. Typical actuating range...................................................................................................22
12.2.3. Actuating range for center offset m = 0 1) ......................................................................22
12.3. Actuator CES-A-BBA/CES-A-BCA.....................................................................................................23
12.3.1. Technical data ...............................................................................................................23
12.3.2. Typical actuating range...................................................................................................24
12.3.3. Actuating range for center offset m = 0 1) ......................................................................24
13. Ordering information and accessories................................................................. 25
14. Inspection and service ........................................................................................ 25
15. Service .............................................................................................................. 25
16. Declaration of conformity ................................................................................... 25

Operating Instructions
Non-Contact Safety Switch CES-A-.5
4(translation of the original operating instructions) 2096580-16-11/22
1. About this document
1.1. Scope
These operating instructions apply to all CES-A-.5 of version V0.1.X. These operating instructions, the document Safety
information and any available 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
(2096580) (this document)
Internet
www
Declaration of conformity Declaration of conformity
Internet
www
Possibly available 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 document
number or the order number for the device in the search box.

5
2096580-16-11/22 (translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-A-.5
EN
2. Correct use
Safety switches series CES-A-.5 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.
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-BBA
071840
CES-A-BCA
088786
CES-A-BDA-20
084720
CES-A-BPA
098775
CES-A-C5E-01
077750
CES-A-C5H-01
091458
CES-A-W5H-01
097525
Key to symbols
Combination possible
Combination not permissible

Operating Instructions
Non-Contact Safety Switch CES-A-.5
6(translation of the original operating instructions) 2096580-16-11/22
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 6.2. Switching states on page 7).
ÌSafety characteristics: category, Performance Level, PFHD(see chapter 12. Technical data on page 18).
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 ineffective.
On this topic pay attention in particular to the measures for reducing the possibility of bypassing
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 pur-
pose, 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
2096580-16-11/22 (translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-A-.5
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 with high coding level) 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 tampering.
The system thus possesses a high coding level.
ÌDevices with multicode evaluation: Unlike systems with unicode evaluation, 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 (multi-
code detection). There is no exact comparison of the actuator code with the taught-in code in the safety switch (unicode
evaluation). The system possesses a low coding level.
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 switched 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. Switching states
The detailed switching states for your switch can be found in the system status table. 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 LA and LB on off
Monitoring output OUT on off

Operating Instructions
Non-Contact Safety Switch CES-A-.5
8(translation of the original operating instructions) 2096580-16-11/22
6.3. Block diagram
1
2
3
4
5
6
7
8
0V
+ U
LA
LB
OUT
+LA
-LAB
+LB
B
I1
O1
0 V
0 V
E2
I9
O9
0 V
0V
0 V
OUT
DC +24 V
+LB
-LAB
LB
+LA
LA
+ U
0V
(RD)
(BU)
(YE)
(PK)
(GN)
(GY)
(BN)
(WH)
+LA
LA
R
B
-LAB
+
-
Trans-
ponder
Pin assignment:
Common ground for output A and B
Load A
Pin Core color
WH/white
BN/brown
GN/green
YE/yellow
GY/gray
PK/pink
BU/blue
RD/red
Function
Coded
actuator
Read head with
evaluation unit
CES-A-.5
Housing:
118 x 40 x 40 mm
Connection:
M 12x1
8-pin, screened
Read head
Safety input
Pulsed output
Input
Safety input
Pulsed output
Output circuit:
Screen bonding clamp
The screen on the connection cable
is connected internally to the screen
bonding clamp on the housing.
Safety PLC
with static /
dynamic signals
Connection example with safety PLC PSS 3056 (PILZ)
Power
supply
for load A
Test pulse 0
Test pulse 1

9
2096580-16-11/22 (translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-A-.5
EN
7. Changing the approach direction
NOTICE
Risk of damage to equipment as a result of trapped cables.
ÌMake sure that the cables are not trapped or torn off when the approach direction is changed.
The active face of the read head can be adjusted in 5 directions. It is marked by the red face.
1. Unscrew the screws on the fastening bracket.
2. Pull the read head off the fastening bracket and tilt the read head by 90° (arrow 2).
¨The active face is now pointing downward.
3. Turn the read head by 180° (arrow 3).
4. Re-tighten the screws for the read head on the fastening bracket. Tightening torque 0.6 Nm.
Housing
Fastening bracket
Active face
Read head
5. Remove the clip from the underside of the housing to change the lateral approach direction.
6. Pull the read head off the housing and turn it in 90° steps in the desired approach direction.
7. Fit the read head to the housing and re-t the clip.
Housing
Read head
Clip
Other approach directions

Operating Instructions
Non-Contact Safety Switch CES-A-.5
10 (translation of the original operating instructions) 2096580-16-11/22
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 bypassing
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/actuators, 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 maounting
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 distances 0.8xSao or closer when the guard is closed. To avoid entering
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.
- they cannot be removed or tampered with using simple means.
ÌPay attention to the maximum tightening torque of 1Nm for mounting the safety switch and actuator. For actuators made
of PE-HD, the maximum tightening torque is only 0.5Nm.

11
2096580-16-11/22 (translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-A-.5
EN
9. Electrical connection
WARNING
Loss of the safety function due to incorrect connection.
ÌNot suitable for safety relays that implement short circuit monitoring with different potentials (0V/24V).
The voltage at +LA/+LB must correspond to the information in the technical data.
Ì
+UB
0 V OUT
0 V
+24 V
+LA
LA
+LB
LB
-LAB
S11
S12
S22
S21
A2
A1
CES-A-.5
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.
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
insulation 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 installation site
of the device must comply with the requirements according to the standard EN60204-1.
ÌPlease pay 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!
ÌIf the device does not appear to function when operating voltage is applied (e.g. green STATE LED
does not illuminate or ash), the safety switch must be returned unopened to the manufacturer.
ÌThe device is fully encapsulated, it is therefore not possible to remove the lid from the housing.

Operating Instructions
Non-Contact Safety Switch CES-A-.5
12 (translation of the original operating instructions) 2096580-16-11/22
9.1. Notes about
Important!
ÌFor use and application as per the requirements of 1) a power supply with the feature “for use in
Class 2 circuits” must be used.
Alternative solutions must comply with the following requirements:
- This device shall be used with a suitable isolating source in conjunction with a fuse in accordance
with UL 248. This fuse should be designed for max. 3.3A and should be integrated into the 30VDC
voltage section.
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 contacts LA/LB and -LA/-LB are short circuit-proof, but they are not reverse polarity protected.
ÌA short circuit between LA and LB can be detected only by external pulsing.
ÌA short circuit in the cable can be excluded by laying the cable with protection.
ÌThe device meets the necessary EMC regulations even with an unscreened connecting cable. For applications that are
particularly sensitive to interference, a screened cable can be connected to the shield spring. This can be electrically
connected to the machine ground via the xing screws. The shield at the open end of the cable must also be connected
electrically to the machine ground.
9.3. 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 requirements.
Observe the following requirements with respect to the connecting cables:
Table 2: Voltage drop as a function of switching current and cable length (examples)
Switching current Cable length “l” Voltage drop Max. voltage drop Max. voltage drop
[mA] [m] Output [V] Cable [V] Total [V]
6
(safety control system with
pulsed signals)
1 -100 1.4 0.1 1.5
101 - 300 1.4 0.4 1.8
50
(safety relay)
1 - 15 1.5 0.2 1.7
16 - 50 1.5 0.5 2.0
51 - 100 1.5 1.0 2.5
101 - 300 1.5 3.0 4.5
400
(e.g. small contactor)
1 - 15 1.7 1.2 2.9
16 - 50 1.7 4.0 5.7
51 - 100 1.7 8.0 9.7
101 - 300 1.7 - -

13
2096580-16-11/22 (translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-A-.5
EN
9.4. Connector assignment of safety switch CES-A-.5
1 0 V 5 OUT
2 + UB 6 +LA
3 LA 7 -LAB
4 LB 8 +LB
View of connection side of the device
The shield on the connecting cable is connected inter-
nally to the device’s shield spring via the knurled nut
on the M12 plug connector.
8
3
5
7
4
21
6
Fig. 1: Connector assignment of safety switch CES-A-.5
9.5. Correct connection
WARNING
In the event of a fault, loss of the safety function due to incorrect connection.
ÌTo ensure safety, both safety outputs (LA and LB) must always be evaluated.
ÌTo achieve category 3/4 according to EN ISO 13849-1, it is necessary to monitor the downstream
contactors.
M
+ 24 V
+ 24 V
+ 24 V
0 V +UB OUT -LAB LB +LB LA +LA
Monitoring output (no safety fnction!) Safety output LB Safety outpu LA
To the control system
Application
CES-A-C5...

Operating Instructions
Non-Contact Safety Switch CES-A-.5
14 (translation of the original operating instructions) 2096580-16-11/22
9.6. Connection example
Important!
ÌTo achieve category 4 according to EN ISO 13849-1, it is necessary to monitor the downstream
contactors (not shown here).
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 responsible for safe
integration into the overall system.
+24V DC
-F1
GND
Power Supply
Safety - PLC with static /
dynamic signals
O1 Pulsed output
O2 Pulsed output
I1 Input
I2 Input
A1
+LA
LA
+LB
LB -LAB 0V
+UB
OUT
Read head
6
3
8
4
EUCHNER
71
GND
+24V DC
-F2
2
5
Fig. 2: Connection example CES-A-.5

15
2096580-16-11/22 (translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-A-.5
EN
10. Setup
10.1. LED displays
LED Color State Meaning
STATE green
illumi-
nated Normal operation
ashing - Teach-in operation
(for further signal function, see chapter 11. System status table on page 17)
OUT/ERROR
yellow illumi-
nated Valid actuator detected
red illumi-
nated
- Internal electronics fault
- Invalid teach-in operation
(for further signal function, see chapter 11. System status table on page 17)
10.2. Teach-in function for actuator (only for unicode evaluation)
The actuator must be assigned to the evaluation unit using a teach-in function before the system forms a functional unit.
During the teach-in operation the safety outputs are open and the door monitoring output is LOW. The system is in the safe
state.
Important!
ÌDuring the teach-in operation the following conditions must be met:
- No state change, e.g. opening of a safety door.
- The power supply must not be switched off.
ÌIf these conditions are not met, the evaluation unit switches to the safe fault state (ERROR LED illu-
minates) and signals this operating fault with the STATE LED.
ÌThe number of teach-in operations on one evaluation unit is limited to a maximum of 8.
ÌThe evaluation unit can be operated only with the last actuator taught-in.
ÌAn actuator that has not been subjected to teach-in will not be detected by the related read head.
ÌWhen the evaluation unit is switched on (operating voltage is applied), the STATE LED signals the
number of possible remaining teach-in operations (see system status table).
ÌAlso after the 8th teach-in operation or if an “old” actuator is placed against the read head, the system
automatically switches to the teach-in mode. In both cases, a teach-in operation with a duration of
60 seconds is started; however, the last actuator code remains active in the memory (see system
status table) – a new code is not taught-in.
10.2.1. Carrying out teach-in for rst actuator (delivery state)
To trigger the rst teach-in operation, the user must perform the following actions in the stipulated order:
1. Start teach-in operation
- Switch on operating voltage (STATE LED ashes at approx. 4Hz)
- Close door to be monitored (the actuator must be in the actuating range of the read head)
- Teach-in operation starts (STATE LED ashes at approx. 1Hz)
- Wait for acknowledgment of the teach-in operation (STATE LED goes out after approx. 60 seconds)
2. End teach-in operation
- Interrupt operating voltage for at least 3 seconds (code for the actuator taught-in is activated)
3. Check safeguard for effectiveness

Operating Instructions
Non-Contact Safety Switch CES-A-.5
16 (translation of the original operating instructions) 2096580-16-11/22
10.2.2. Carrying out teach-in for a new actuator
A maximum of 8 teach-in operations can be performed. The number of already completed teach-in operations is signaled
by the ashing sequence of the STATE LED each time the power supply is connected (see 11. System status table on page
17, area Status indication).
Faulty actuators can be replaced. Then a complete teach-in operation must be performed as per this section.
To trigger a further teach-in operation, the user must perform the following actions in the stipulated order:
1. Start teach-in operation
- Switch on operating voltage
- Close door to be monitored (the new actuator must be in the actuating range of the read head)
- Teach-in operation starts (STATE LED ashes at approx. 1Hz)
- Wait for acknowledgment of the teach-in operation (STATE LED goes out after approx. 60 seconds)
2. End teach-in operation
- Interrupt operating voltage for at least 3 seconds (code for the new actuator taught-in is activated)
The newly taught-in actuator is saved and the old actuator deactivated.
3. Check safeguard for effectiveness
10.3. 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.
- The safety switch carries out a self-test.
The green STATE LED ashes up to 3 times.
The STATE LED then illuminates continuously.
The OUT and ERROR LEDs do not light up.
2. Close all guards.
- The machine must not start automatically.
- The green STATE LED and the yellow OUT LED light up continuously.
3. Enable operation in the control system.
4. Open the guard.
- The machine must switch off and it must not be possible to start it as long as the guard is open.
- The green STATE LED illuminates continuously; the OUT and ERROR LEDs do not illuminate.
Repeat steps 2…4 separately for each guard.

17
2096580-16-11/22 (translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-A-.5
EN
11. System status table
Operating mode
Actuator/door position Safety outputs LA and LB
PLC LED indicator
Output
State
Output
OUT (status signal)
STATE (green) OUT/ERROR (yellow) OUT/ERROR (red)
Normal operation
closed on 1 Normal operation, door closed
open off 0 Normal operation, door open
Teach-in operation
(only unicode)
open off 0 4 Hz Initial setup after delivery, ready for rst teach-in operation
closed off 0 1 Hz
(60 s) Teach-in operation
closed off 0
Positive acknowledgment of completion of teach-in operation
To activate the actuator code from the teach-in operation in the evaluation
unit, the operating voltage must then be switched off at the evaluation unit for
min. 3 seconds.
Status indication
(only unicode)
X off 0 3 x + Indication after 1st to 5th teach-in operations
X off 0 2 x + Indication of the remaining teach-in operations after the 6th teach-in operation
X off 0 1 x + Indication of the remaining teach-in operations after the 7th teach-in operation
X off 0 Device cannot perform any further teach-in operation
Fault display X off 0
Internal component failure or
excessively high interference (EMC) or short circuit/external power at the LA/
LB safety output
Operating fault
(only unicode)
closed off 0 1 x Incorrect 9th teach-in operation (only unicode)
closed off 0 2 x Incorrect teach-in operation for an old actuator (only unicode)
closed off 0 3 x Negative acknowledgment for teach-in operation. Actuator was held in front
of the read head for less than 60 s
Key to symbols
N 0 V or not connected
1 24 V
0 0 V
LED not illuminated
LED illuminated
15 Hz (8 s) LED ashes for 8 seconds at 15 Hz
3 x + LED ashes three times and then illuminates continuously
3 x LED ashes three times, and this is then repeated
X Any state
After the cause has been remedied, faults can generally be reset by opening and closing the guard. If the fault is still displayed
afterward, briey interrupt the power supply. Please contact the manufacturer if the fault could not be reset after restarting.
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-A-.5
18 (translation of the original operating instructions) 2096580-16-11/22
12. Technical data
NOTICE
If a data sheet is available for the product, the information on the data sheet applies.
12.1. Safety switch CES-A-.5
ÌRead head and evaluation unit integrated in the normal housing
ÌSemiconductor output
ÌM12 plug connector
Dimension drawing
30
M12x1
±0,1
±0,1
13
118
45,5
40
∅5,3
60
7,3
( 131 )
16,5
40,5
30
40
LED gn
LED rd/ye
Active face
Switching characteristics
Ì2 safety outputs (semiconductor
outputs)
Ì1 door monitoring output (semicon-
ductor output, not a safety output)
Guard
closed
(actuator detected)
open
(actuator not in the actuating
range)
Read head Actuator Read head
+LALA
+LBLB
24 VOUT
+LALA
+LBLB
24 VOUT

19
2096580-16-11/22 (translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-A-.5
EN
12.1.1. Technical data for safety switch CES-A-.5
Parameter Value Unit
min. typ. max.
Housing material PBT GF30
Dimensions Acc. to EN 60947-5-2 mm
Weight 0.4 kg
Ambient temperature at UB= 24 V DC -20 - +55 °C
Degree of protection IP65/IP67
Degree of contamination 3
Rated insulation voltage Ui- 300 1) - V
Rated impulse withstand voltage Uimp - 1.5 - kV
Rated conditional short-circuit current 100 A
Shock and vibration resistance Acc. to EN 60947-5-3
Installation orientation Any
Connection M12 plug connector, 8-pin; shield can be connected
Operating voltage UB(regulated, residual ripple < 5%) 18 24 27 V DC
The following applies to the approval acc. to UL Operation only with UL Class 2 power supply or equivalent measures
Current consumption 80 mA
Switching load acc. to UL max. DC 24 V, Class 2
External fuse (operating voltage UB) 0.25 - 8 A
Power supply for output load U(+LA)/U(+LB) 18 24 27 V DC
Safety outputs (LA/LB, 2 semiconductor outputs, p-switching,
short circuit-proof, electrically decoupled)
- Output voltage U(LA/U(LB) 2)
HIGH U(LA) U(+LA) - 1.5 - U(+LA)
HIGH U(LB) U(+LB) - 1.5 - U(+LB) V DC
LOW U(LA)/U(LB) 0 - 1
Switching current per safety output 1 - 400 mA
External fuse (U(+LA)/U(+LB), safety circuit 0.4 A medium slow-blow
Utilization category DC-13 24 V 400 mA
Monitoring output (OUT, semiconductor output, p-switching,
short circuit-proof)
- Output voltage 0.8 x UB- UBV DC
- Output current - - 20 mA
Risk time 3) - - 180 ms
Discrepancy time - - 120 ms
Ready delay 4) - - 3 s
Dwell time 5) 0.5 - - s
Switching frequency - - 1 Hz
Repeat accuracy R acc. to EN IEC 60947-5-2 - - 10 %
Mounting distance between 2 read heads or 2 actuators 80 - - mm
EMC protection requirements Acc. to EN 60947-5-3
LED displays STATE LED green: Normal operation
Flashing: Teach-in operation
OUT/ERROR LED yellow: Actuator detected
OUT/ERROR LED red: - EMC interference
- Internal electronics fault
- Invalid teach-in operation
Reliability values acc. to EN ISO 13849-1 6) CES-A-.5E-... CES-A-.5H-...
Category 3 4
Performance Level (PL) PL e PL e
PFHD4.29 x 10-8 / h 3.7 x 10-9 / h
Mission time 20 20 years
Diagnostic coverage DC 90 99 %
1) Tested by employers’ liability insurance association up to 75 V.
2) Values at a switching current of 50 mA without taking into account the cable lengths.
3) Maximum OFF time for the safety outputs following removal of the actuator.
4) After the operating voltage is switched on, the semiconductor outputs are switched off and the monitoring outputs are set LOW during the ready delay.
5) The dwell time of an actuator inside and outside the actuating range must be at least 0.5 s to ensure safe detection of internal faults in the evaluation unit (self-monitoring).
6) Refer to the declaration of conformity in chapter 16 for the issue date.

Operating Instructions
Non-Contact Safety Switch CES-A-.5
20 (translation of the original operating instructions) 2096580-16-11/22
12.1.2. Typical system times
Please refer to the technical data for the exact values.
Ready delay: After switch-on, the device carries out a self-test. The system is ready for operation only after this time.
Turn-on time of safety outputs: The max. reaction time ton is the time from the moment when the actuator is in the actu-
ating range to the moment when the safety outputs switch on. This time corresponds to the risk time.
Risk time according to EN 60947-5-3: If an actuator moves outside the actuating range, the safety outputs (LA and LB)
are deactivated at the latest after the risk time.
Discrepancy time: The safety outputs (LA and LB) switch with a slight time offset. They have the same signal state no
later than after the discrepancy time.