EUCHNER CES-A-AEA-02B User manual

EN
Operating Instructions
Non-Contact Safety System
CES-A-AEA-02B/CES-A-AEA-04B (Unicode)

Operating Instructions
Non-Contact Safety System CES-A-AEA-02B/CES-A-AEA-04B
2(translation of the original operating instructions) 2084606-19-09/17
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 ......................................................................... 7
5. General safety instructions.................................................................................... 7
6. Function............................................................................................................... 8
6.1. Block diagrams CES-A-AEA-…..........................................................................................................9
7. Mounting............................................................................................................ 11
8. Electrical connection .......................................................................................... 12
8.1. Notes about ..........................................................................................................................12
8.2. Safety in case of faults..................................................................................................................12
8.3. Fusing of the power supply and the safety contacts.........................................................................12
8.4. Connection example CES-A-AEA-02B ..............................................................................................13
8.5. Connection example CES-A-AEA-04B ..............................................................................................14
9. Setup ................................................................................................................. 15
9.1. LED indicators..............................................................................................................................15
9.2. Teach-in operation.........................................................................................................................15
9.2.1. Changing the conguration/new actuators ......................................................................16
9.3. Functional check...........................................................................................................................16
9.3.1. Self-test with test input TST ...........................................................................................16
10. System status table ............................................................................................ 18
11. Technical data .................................................................................................... 19
11.1. Evaluation unit CES-A-AEA-02B .......................................................................................................19
11.2. Evaluation unit CES-A-AEA-04B .......................................................................................................21
11.3. Read head CES-A-LNA-…...............................................................................................................23
11.4. Read head CES-A-LNA-SC ..............................................................................................................25
11.5. Read head CES-A-LCA-… ...............................................................................................................27
11.6. Read head CES-A-LQA-SC ..............................................................................................................29
11.7. Read head CES-A-LMN-SC..............................................................................................................31
11.8. Actuator CES-A-BBA/CES-A-BCA.....................................................................................................33
11.9. Actuator CES-A-BQA......................................................................................................................34

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2084606-19-09/17 (translation of the original operating instructions)
Operating Instructions
Non-Contact Safety System CES-A-AEA-02B/CES-A-AEA-04B
EN
11.10. Actuator CES-A-BDA......................................................................................................................35
11.11. Actuator CES-A-BMB .....................................................................................................................36
12. Ordering information and accessories................................................................. 37
13. Inspection and service ........................................................................................ 37
14. Service .............................................................................................................. 37
15. Declaration of conformity ................................................................................... 38

Operating Instructions
Non-Contact Safety System CES-A-AEA-02B/CES-A-AEA-04B
4(translation of the original operating instructions) 2084606-19-09/17
1. About this document
1.1. Scope
This document is valid for
ÌNon-Contact Safety System CES‑A‑AEA‑02B, evaluation unit for two read heads (order no. 092560)
ÌNon-Contact Safety System CES‑A‑AEA‑04B, evaluation unit for four read heads (order no. 072000)
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
Document on CD
DANGER
WARNING
CAUTION
Signal
word:
DANGER
WARNING
CAUTION
Consequence if not observed:
Death or severe injuries
Possibly death or severe injuries
Possibly minor injuries
NOTICE
Important!
Signal
word:
NOTICE
Important!
Malfunction or device damage possible
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 and
maintenance CES-A…/
CES-AZ/CES-FD
(2109083)
ÌBasic safety information
ÌMaintenance instructions
Operating Instructions
(2084606) (This document)
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.

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2084606-19-09/17 (translation of the original operating instructions)
Operating Instructions
Non-Contact Safety System CES-A-AEA-02B/CES-A-AEA-04B
EN
2. Correct use
Evaluation units of the series CES-A are used to evaluate safety-related signals from EUCHNER read heads. The system
forms an interlocking device without guard locking. It meets the requirements according to ENIEC60947-5-3.
The system consists of evaluation unit, read head and actuator. It forms an interlocking device with high coding level (type4).
In combination with a movable safety guard and the machine control, this system prevents dangerous machine functions from
occurring while the safety guard is open. A stop command is triggered if the safety guard is opened during the dangerous
machine function.
This means:
ÌStarting commands that cause a dangerous machine function must become active only when the safety guard is closed.
ÌOpening the safety guard triggers a stop command.
ÌClosing a safety guard must not cause automatic starting of a dangerous machine function. A separate start command
must be issued. For exceptions, refer to EN 12100 or relevant C-standards.
Before use, a risk assessment must be performed on the machine, e.g. according to the following standards:
ÌENISO13849-1, Safety of machinery – Safety-related parts of control systems – Part 1: General principles for design
ÌENISO12100, Safety of machinery – General principles for design – Risk assessment and risk reduction
ÌIEC62061, Safety of machinery – Functional safety of safety-related electrical, electronic and programmable electronic
control systems.
Correct use includes observing the relevant requirements for installation and operation, e.g. according to the following
standards:
ÌENISO13849-1, Safety of machinery – Safety-related parts of control systems – Part 1: General principles for design
ÌENISO14119, Safety of machinery – Interlocking devices associated with guards – Principles for design and selection
ÌEN60204-1, Safety of machinery – Electrical equipment of machines.
The following components can be connected to the evaluation unit CES-A-AEA…:
ÌCES read heads
ÌCEM read heads
ÌCET read heads
For further information, refer to the operating instructions of the corresponding component and to Table 1: Possible com‑
binations for CES components on page 6.
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 ENISO13849-2.
ÌCorrect use requires observing the permissible operating parameters (see technical data).
ÌIf a data sheet is included with the product, the information on the data sheet applies.
ÌIt is only allowed to use components that are permissible in accordance with the table below.

Operating Instructions
Non-Contact Safety System CES-A-AEA-02B/CES-A-AEA-04B
6(translation of the original operating instructions) 2084606-19-09/17
Table 1: Possible combinations for CES components
Evaluation unit Read head
Actuator
CES-A-BBA
071840
CES-A-BCA
088786
CES-A-BDA
084720
CES-A-BMB
077791
CES-A-BQA
098108
CES-A-NBA-...
All items
CES-A-BPA
098775
CEM-A-BE05
094805
CEM-A-BH10
095175
CET-A-BWK-50X
096327
CES-A-AEA-02B
092560
CES-A-AEA-04B
072000
CES-A-LNA...
All items
CES-A-LNA-SC
077715
CES-A-LCA...
All items
CES-A-LMN-SC
077790
CES-A-LQA-SC
095650
CEM-A-LE05K-S2
094800
CEM-A-LE05R-S2
095792
CEM-A-LH10K-S3
095170
CEM-A-LH10R-S3
095793
CET-AX
Key to symbols
Combination possible
Combination possible, guard locking for process protection
Combination possible, guard locking for personal protection
Combination not permissible
3. Description of the safety function
Devices from this series feature the following safety functions:
The following applies in combination with read heads without guard locking (CES read heads) and read heads with guard
locking for process protection (CEM/CET read heads):
Monitoring of the position of a safety guard
(interlocking device according to EN ISO 14119)
ÌSafety function:
- The safety contacts are switched off when the safety guard is open (see chapter 11. Technical data on page 19).
ÌSafety characteristics: category, Performance Level, PFHD(see Technical data on Page 20 and Page 22).

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2084606-19-09/17 (translation of the original operating instructions)
Operating Instructions
Non-Contact Safety System CES-A-AEA-02B/CES-A-AEA-04B
EN
4. Exclusion of liability and warranty
In case of failure to comply with the conditions for correct use stated above, or if the safety instructions are not followed,
or if any servicing is not performed as required, liability will be excluded and the warranty void.
5. General safety instructions
WARNING
Danger to life due to improper installation or due to bypassing (tampering). Safety components fulll
a personal 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 ENISO14119:2013, section 7.
ÌThe switching operation must be triggered only by actuators designated for this purpose.
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 occupational safety and accident prevention.
ÌThe number of teach-in and switching operations is saved in the internal memory of the evaluation
unit. If necessary, this memory can be read by the manufacturer.
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. EUCHNER cannot provide any
warranty in relation to the readability of the CD for the storage period required. For this reason you
should archive a printed copy of the operating instructions. You can download the operating instruc-
tions from www.euchner.com.

Operating Instructions
Non-Contact Safety System CES-A-AEA-02B/CES-A-AEA-04B
8(translation of the original operating instructions) 2084606-19-09/17
6. Function
The safety system consists of three components:
ÌCoded actuator
ÌRead head
ÌEvaluation unit
The number of read heads that can be connected depends on the evaluation unit:
ÌCES-A-AEA-02B: two read heads
ÌCES-A-AEA-04B: four read heads
The evaluation unit can be congured so that a start button (monitoring of the falling edge) and a feedback loop can be
connected to monitor external relays and contactors. The individual conguration is dened by a setup procedure (see
chapter 9. Setup on page 15).
The read heads and actuators are assigned to the device in a special teach-in operation.
Each delivered actuator possesses a unique electronic coding and so is a unique element in the system used. The code in
an actuator cannot be reprogrammed.
The read heads are fastened to the xed part of the safety guard and are each connected to the evaluation unit via a two-
core shielded cable (terminals H.1, H.2 and SH.).
The actuator fastened to the movable part of the safety guard is moved towards the read head by closing the door. When the
switch-on distance is reached, power is supplied to the actuator by the read head by induction and data can be transferred.
The read code is compared with the taught-in code in the evaluation unit.
If the data match, door monitoring output O1…O2 or O1…O4 (semiconductor output) on the related read head is set to HIGH.
If all data for all read heads activated match, the safety outputs (relay output) are then enabled. The OUT LED illuminates.
Optionally, a feedback loop can be connected to the evaluation unit. The evaluation unit can then only be started with the
feedback loop closed. A welded contactor contact in the enable path will thus be detected the next time the machine is started.
Due to the combination of dynamic polling of the actuators and the redundant, diverse design of the safety electronics with
redundantly controlled safety outputs, the evaluation unit will enter the safe state with every detectable fault.
When a safety guard is opened or when guard locking is released, the safety outputs switch off the safety circuit and the
OUT LED goes out. The state of the safety outputs is monitored internally by positively driven NC contacts (relay output).
Independent of the switching state of the safety circuit, the position of all safety doors can be polled via the outputs O1…
O2 or O1…O4 .
If an internal fault occurs in the evaluation unit, the safety circuit is switched off, the diagnostic output (DIA) is set to HIGH
and the DIA LED illuminates red.

9
2084606-19-09/17 (translation of the original operating instructions)
Operating Instructions
Non-Contact Safety System CES-A-AEA-02B/CES-A-AEA-04B
EN
6.1. Block diagrams CES-A-AEA-…
CES-A-AEA-02B
Trans-
ponder
Trans-
ponder
Kopf 1 Kopf 2
A B
0 V
UB
TST
0V
S
H11 H21H12 H22SH1 SH2
DIA 14
1323 Y1
24 Y2
Demodulator
Filter
Verstärker
Komparator
KA
KB
Kopf - HF - Multiplexer
( 1 aus 4 )
J2
J1
O1 O2
+24 V
KA
KB
CPU-A
(Typ 1)
LED
STAT E
OUT
DIA
Star t
CPU-B
(Typ 2)
STATEOUT DIA
Y
S
H2
H1
ON
1 2 5 6
Activation of the
teach-in operation with
jumper
on J1, J2
Read heads
Coded
actuators
Trans-
ponder
Trans-
ponder
Head 1 Head 2
DC
+ 24 V
Operating
voltage
Demodulator
Filter
Amplifier
Comparator
Head selection
CPU-A
(type 1)
Head - RF - multiplexer
(1 of 2)
CPU-B
CPU-B
CPU-A
CPU-A
Start
CPU-B
(type 2)
DIP switch
+UB, 0 V Power supply
J1, J2 Jumper for teach-in operation
H11/H12/H21/H22 Connection for read heads 1 ... 2
SH1, SH2 Shield
TST Test input (see chapter 9.3.1. Self‑test with test input TST on page 16)
O1 ... O2 Semiconductor monitoring outputs
DIA Diagnostic output
13, 14 Connection for relay contact A, safety relay enable
23, 24 Connection for relay contact B, safety relay enable
Y1, Y2 Feedback loop
S Start button connection (monitoring of the falling edge)

Operating Instructions
Non-Contact Safety System CES-A-AEA-02B/CES-A-AEA-04B
10 (translation of the original operating instructions) 2084606-19-09/17
CES-A-AEA-04B
Trans-
ponder
Trans-
ponder
Trans-
ponder
Trans-
ponder
Kopf 1 Kopf 2 Kopf opf 4
ABCD
0 V
0V
S
H11H31
H21H41
H12H32
H22H42
SH1SH3
SH2SH4
O3 O4
14
13
23 24 Y2
Demodul ator
Filter
Verstärker
Komparat or
KA
KB
K
( 1 aus 4
TST
0V J2
J1
O1 O2 DIA23 Y1
24 Y2
+24 V
KA
KB
CPU-A
(Typ 1)
LED
STAT E
OUT
DIA
Star tStart
CPU-B
(Typ 2)
STATEOUT DIA
UB
Y
S
H4
H3
H2
H1
ON
1 2 345 6
Head selection
Demodulator
Filter
Amplifier
Comparator
CPU-A
(type 1)
Head -RF - mulitplexer
(1 of 4)
CPU-B
CPU-B
CPU-A
CPU-A
CPU-B
(type 2)
DIP switch
Activation of the
teach-in operation with
jumper
on J1, J2
Read heads
Coded
actuators
Trans-
ponder
Head 1
DC
+ 24 V
Operating
voltage
Trans-
ponder
Trans-
ponder
Trans-
ponder
Head 2 Head 3 Head 4
+UB, 0 V Power supply
J1, J2 Jumper for teach-in operation
H11/H12...H41/H42 Connection for read heads 1 ... 4
SH1 ...SH4 Shield
TST Test input (see chapter 9.3.1. Self‑test with test input TST on page 16)
O1 ... O4 Semiconductor monitoring outputs
DIA Diagnostic output
13, 14 Connection for relay contact A, safety relay enable
23, 24 Connection for relay contact B, safety relay enable
Y1, Y2 Feedback loop
S Start button connection (monitoring of the falling edge)

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2084606-19-09/17 (translation of the original operating instructions)
Operating Instructions
Non-Contact Safety System CES-A-AEA-02B/CES-A-AEA-04B
EN
7. Mounting
NOTICE
Device damage due to improper installation or unsuitable ambient conditions.
ÌRead heads and actuators must not be used as a mechanical end stop.
ÌObserve EN ISO 14119:2013, sections 5.2 and 5.3, for information about fastening the safety
switch and the actuator.
ÌObserve EN ISO 14119:2013, section 7, for information about reducing the possibilities for by-
passing an interlocking device.
ÌThe evaluation unit must be mounted in a control cabinet with a minimum degree of protection of
IP54. A snap-in element on the rear of the device is used for fastening to a mounting rail.
ÌIf several evaluation units are mounted side by side in a control cabinet without air circulation (e.g.
fan), a minimum distance of 10mm must be maintained between the evaluation units. This dis-
tance enables the heat from the evaluation unit to dissipate.
Important!
ÌFrom the assured switch-off distance Sar, the safety outputs are safely shut down.
ÌWhen mounting several read heads, observe the stipulated minimum distance to avoid mutual in-
terference.
- For CES-A-LNA/-LCA smin=50mm
- For CES-A-LMN smin=20mm
- For CES-A-LQA smin=80mm
smin
ÌIf the actuator is installed ush, the switching distance changes as a function of the installation
depth and the safety guard material.
Operating
distance
Actuator
Operating
distance
Actuator
Flush mounting Surface mounting
Note the following points:
ÌActuator and read head must be tted so that
- the front faces are at the minimum switch-on distance 0.8xSao or closer when the safety guard is closed (see section
Operating distances). To avoid entering the area of possible side lobes, a minimum distance is to be maintained in
case of a side approach direction. See section Typical operating distance for the related actuator.
- a hazard is excluded until the assured switch-off distance (Sar) is reached when the safety guard is open.
- the actuator is positively mounted on the safety 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 for the read head or safety switch and actuator mountings of 1Nm. For
read heads/actuators made of PE-HD, the maximum tightening torque is only 0.5Nm.

Operating Instructions
Non-Contact Safety System CES-A-AEA-02B/CES-A-AEA-04B
12 (translation of the original operating instructions) 2084606-19-09/17
8. Electrical connection
WARNING
In case of an error, loss of the safety function through incorrect connection.
ÌMonitoring outputs must not be used as safety outputs.
ÌLay the connection cables with protection to prevent the risk of short circuits.
NOTICE
Risk of damage to equipment or malfunctions as a result of incorrect connection.
ÌAll the electrical connections must either be isolated from the mains supply by a safety transform-
er according to IEC 61558-2-6 with limited output voltage in the event of a fault, or by other equiv-
alent isolation measures.
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. The switch-on current may have to
be limited for capacitive loads.
ÌThe tightening torque for the screws on the connection terminals must be 0.6…0.8Nm.
ÌThe connection cable for the read heads must only be extended using EUCHNER plug connectors,
and adequate consideration must be given to EMC. Intermediate terminals must not be used.
ÌThe shield on the connection cable for the read head must be connected to the appropriate termi-
nal SH1…4 on the evaluation unit. The portion of cable from which insulation is stripped should
be kept as short as possible (max. 3cm).
8.1. Notes about
Important!
ÌFor use and operation as per the requirements1), a power supply with the feature “for use in
class 2 circuits” must be used.
Alternative solutions must comply with the following requirements:
a) Electrically isolated power supply unit with a max. open-circuit voltage of 30V/DC and a limited
current of max. 8A.
b) Electrically isolated power supply unit in combination with fuse as per UL248. This fuse should be
designed for max. 3.3A and should be integrated into the 30VDC voltage section.
ÌUse cable material made of copper wire with a temperature resistance of at least 75°C.
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).
8.2. Safety in case of faults
ÌThe operating voltage UBis reverse polarity protected.
ÌThe connections for the read heads are not short circuit-proof.
ÌA short circuit between 13/14 and 23/24 can be detected only by means of external pulsing.
ÌA short circuit in the cable can be excluded by laying the cable with protection.
8.3. Fusing of the power supply and the safety contacts
ÌProvide external contact fuses (6AgG fuse or 6A circuit breaker, characteristic B or C) for relay outputs.
ÌThe power supply must be protected with a max. 8A fuse ahead of terminal UB.

13
2084606-19-09/17 (translation of the original operating instructions)
Operating Instructions
Non-Contact Safety System CES-A-AEA-02B/CES-A-AEA-04B
EN
8.4. Connection example CES-A-AEA-02B
24 VDC
GND
-F1
0V
TST
-F2
UB
CES-A-AEA-02B
092560
J1 J2
O1
SH1
O2
Read-
head1
H11
Trans-
ponder
O3
H12
O4
-V1
SH2
DIA
-K1
A1
A2
Read-
head 2
H21
Trans-
ponder
23
H22
24
-V2
13 14
-K2
A1
A2
feedback loop
Y1
EUCHNER
Y2
-K2
21
22
-K1
21
22
SStart
L1
-K1 13
14
-K2 13
14
M
3~
-M1
L2
23
24
23
24
L3
33
34
33
34
Important!
To achieve category 4 according to EN ISO 13849-1, it is necessary to monitor the downstream
contactors (here: contacts of -K3 and -K4 in the feedback loop).
This example shows only an excerpt that is relevant for connection of the CES system. The example
illustrated here does not show complete system planning. The user is responsible for safe integration
into the overall system.

Operating Instructions
Non-Contact Safety System CES-A-AEA-02B/CES-A-AEA-04B
14 (translation of the original operating instructions) 2084606-19-09/17
8.5. Connection example CES-A-AEA-04B
24 VDC
GND
-F1
0V
TST
-F2
UB
CES-A-AEA-04B
072000
J1 J2 SH1
O1
Read-
head 1
H11
Trans-
ponder
O2
H12
EUCHNER
O3
SH2
O4
-V1
Read-
head 2
H21
DIA
Trans-
ponder
H22
-K1
A1
A2
23
SH3
24
-V2
Read-
head 3
H31
Trans-
ponder
13
H32
14
-K2
A1
A2
feedback loop
SH4
Y1
Read-
head 4
H41
Y2
-K2
21
22
-K1
21
22
Trans-
ponder
H42
SStart
L1
-K1 13
14
-K2 13
14
M
3~
-M1
L2
23
24
23
24
L3
33
34
33
34
Important!
To achieve category 4 according to EN ISO 13849-1, it is necessary to monitor the downstream
contactors (here: contacts of -K3 and -K4 in the feedback loop).
This example shows only an excerpt that is relevant for connection of the CES system. The example
illustrated here does not show complete system planning. The user is responsible for safe integration
into the overall system.

15
2084606-19-09/17 (translation of the original operating instructions)
Operating Instructions
Non-Contact Safety System CES-A-AEA-02B/CES-A-AEA-04B
EN
9. Setup
9.1. LED indicators
Designation Color Meaning
STATE green Status indication (multifunction display using ashing modes)
OUT yellow Safety circuit closed
DIA red
ÌOperating fault or
ÌExternal fault (fault in the feedback loop) or
ÌTeach-in operation not valid or
ÌInternal device fault or
ÌTST input activated (function test active)
9.2. Teach-in operation
Before the system forms a functional unit, the parameters are set in the evaluation unit using a teach-in operation (number
of connected read heads, assignment of the actuators to the read heads, with or without automatic start, with or without
feedback loop). During this process the read heads are activated and the actuator code taught-in.
These conguration parameters are saved in the device.
During the teach-in operation the safety outputs are open. The system is in the safe state.
Important!
ÌThe teach-in operation can differ for read heads that are not described in this document. Observe
the information in the operating instructions for the read head used.
ÌDuring the teach-in operation the following conditions must be met:
- There must be no state change, e.g. opening or closing of a safety door or a change in the sig-
nal on the terminals for the start button and the feedback loop.
- The power supply must not be switched off.
ÌIf these conditions are not met, the evaluation unit switches to the safe fault state (diagnostics LED
illuminates) and signals this operating fault with the STATE LED by three short ashes that are re-
peated every second. The teach-in operation must be repeated.
ÌThe number of teach-in operations is unlimited. The evaluation unit can be re-congured as often
as required.
ÌActuators cannot be interchanged without a renewed teach-in operation.
ÌAn actuator that has not been subjected to teach-in will not be detected by the related read head.
ÌEven if only one new actuator needs to be taught, a complete new teach-in operation must be car-
ried out.
ÌDo not change DIP switches during operation.
To trigger a teach-in operation, the user must perform the following actions in the stipulated order:
1. Prepare for teach-in operation
- Switch off power supply UB
- Fit a jumper between terminals J1 and J2
2. Set required conguration on DIP switches
Switch designation Switch position left (OFF) Switch position right (ON)
1 No read head connected to terminals H11, H12, SH1 Read head connected to terminals H11, H12, SH1
2 No read head connected to terminals H21, H22, SH2 Read head connected to terminals H21, H22, SH2
3 No read head connected to terminals H31, H32, SH3 Read head connected to terminals H31, H32, SH3
4 No read head connected to terminals H41, H42, SH4 Read head connected to terminals H41, H42, SH4
5 Automatic start
(no start button connected)
Manual start
(start button connected)
6 No feedback loop connected Feedback loop connected
3. Set required conguration on machine
- Close all doors to be monitored (the actuators must be in the operating distance of the related read head)
- For Manual start operating mode: keep start button closed
- For With feedback operating mode: keep feedback loop closed

Operating Instructions
Non-Contact Safety System CES-A-AEA-02B/CES-A-AEA-04B
16 (translation of the original operating instructions) 2084606-19-09/17
4. Start teach-in operation
- Switch on operating voltage
- Wait for self-test (STATE LED ashes for approx. 10 seconds at 15Hz)
- Teach-in operation starts (STATE LED ashes at approx. 1Hz)
- Wait for acknowledgment of the teach-in operation (STATE LED goes out after approx. 10 seconds)
5. End teach-in operation
- Remove jumper between J1 and J2
- For Manual start operating mode: start button must be connected
- For With feedback operating mode: feedback loop must be connected
- Interrupt operating voltage for at least 10 seconds
- Wait for self-test (STATE LED ashes for approx. 10 seconds at 15Hz)
6. Check all safety guards for effectiveness
9.2.1. Changing the conguration/new actuators
The evaluation unit can be re-congured as often as required. For this purpose you must proceed as per the rst teach-in
operation according to the section 9.2. Teach‑in operation on page 15. Faulty actuators can be replaced. Then again a
complete teach-in operation must be performed.
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 area.
ÌObserve the valid accident prevention regulations.
1. Switch on operating voltage.
- The safety switch carries out a self-test.
The green STATE LED ashes for approx. 10 seconds at 15Hz.
The STATE LED then illuminates continuously.
The OUT and DIA LEDs do not illuminate.
2. Close all safety 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 safety guard.
- The machine must switch off and it must not be possible to start it as long as the safety guard is open.
- The green STATE LED illuminates continuously; the OUT and DIA LEDs do not illuminate.
Repeat steps 2…4 separately for each safety guard.
9.3.1. Self-test with test input TST
On electromechanical safety switches or magnetic switches, the function test can be performed by cyclically opening the
safety guard.
From category 2 according to ENISO13849-1 and in accordance with EN 60204-1 : 1997 (chapter 9.4.2.4), a function
test must be performed on the entire safety system on start-up or after dened intervals.
Testing of the internal function of the unit is not necessary because the device monitors itself in real time. Welding of an
output contact (relay output) is detected by the device at the latest the next time the safety guard is opened. A short circuit
in the output cable is not detected by the device.
In addition, the entire safety circuit can be tested without opening the safety guard. For this purpose, opening of the safety
guard can be simulated by applying 24 V DC to the test input TST.

17
2084606-19-09/17 (translation of the original operating instructions)
Operating Instructions
Non-Contact Safety System CES-A-AEA-02B/CES-A-AEA-04B
EN
The safety outputs are switched off, enabling testing of the complete safety circuit. The diagnostic output DIA of the evalu-
ation unit is also set to HIGH as a monitoring function.
When test input TST is reset, the evaluation unit resets the diagnostic output DIA to LOW, the red LED switches off and
normal operation is continued.
In Manual start operating mode, the start button must be pressed again to start the system.
Important!
After the self-test, the test input TST must be connected to 0 V again or must be disconnected.

Operating Instructions
Non-Contact Safety System CES-A-AEA-02B/CES-A-AEA-04B
18 (translation of the original operating instructions) 2084606-19-09/17
10. System status table
Operating mode
LED indicator
State
STATE (green)
OUT (yellow)
DIA (red)
Setup
4Hz Initial setup after delivery without jumper connected to J1, J2.
1Hz Teach-in operation
Acknowledgment of completion of teach-in operation.
Normal operation
15Hz
(10 s) Self-test, duration approx. 10 seconds, is performed after the application of the operating voltage UB
Normal operation, not all monitored doors are closed.
Normal operation, all monitored doors are closed (after pressing the start button, for Manual start operating
mode)
Function test Function test active (TST input=24 V)
Fault display Internal component failure or actuator CES-A-BMB in the impermissible range or excessively high external interfer-
ence (EMC)
Operating fault
3x
Conguration error:
Teach-in operation must be performed again
Possible causes:
- State change during the teach-in operation
- The DIP switch setting and the conguration did not match during the teach-in operation
- DIP switch setting has been changed without teach-in operation
- The jumper (J1, J2) was tted with power supply switched on
- Closed feedback loop (Y1,Y2) present, although a feedback loop was not present during teach-in
- 24 V signal present at the start button input (S) although teach-in was performed with “Automatic start” operating
mode.
4 x
Fault in feedback loop
Possible causes:
- Malfunction of the monitored contactor
- Following removal from the operating distance, actuator is not outside the operating distance long enough; as a
result the feedback loop cannot be closed in this short time. Note the release time for the monitored contactor.
- Feedback loop was not closed on starting the evaluation unit
- Feedback loop was not closed on applying the operating voltage +UB.
Key to symbols
N 0 Volt or not connected
1 24 Volt
0 0 Volt
LED not illuminated
LED illuminated
15Hz (10 s) LED ashes for 10 seconds at 15Hz
3 x + LED ashes three times and then illuminates continuously
3 x LED ashes three times, and this is then repeated
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.

19
2084606-19-09/17 (translation of the original operating instructions)
Operating Instructions
Non-Contact Safety System CES-A-AEA-02B/CES-A-AEA-04B
EN
11. Technical data
11.1. Evaluation unit CES-A-AEA-02B
ÌHousing for rail mounting, IP20
ÌRelay output
ÌTwo read heads can be connected
Dimension drawing
45
99
114
Suitable for 35mm mounting rail according to EN60715
Switching characteristics
ÌTwo safety outputs
(relay outputs)
ÌTwo door monitoring outputs
(semiconductor outputs, not
safety outputs)
Approvals
13 14
23 24
24 VO1
13 14
23 24
24
VO
1
24 VO224
VO
2
Safety guard
closed
(all actuators detected)
open
(e.g. actuator 1 not in the operating
distance)
Read head 1 Actuator 1 Read head 1

Operating Instructions
Non-Contact Safety System CES-A-AEA-02B/CES-A-AEA-04B
20 (translation of the original operating instructions) 2084606-19-09/17
Technical data of CES-A-AEA-02B
Parameter Value Unit
min. typ. max.
Housing material PA6.6 plastic
Dimensions 114x99x45 mm
Weight 0.25 kg
Ambient temperature at UB=DC 24 V -20 - +55 °C
Atmospheric humidity, not condensing - - 80 %
Degree of protection IP20
Degree of contamination 2
Mounting Mounting rail 35mm according to DIN EN 60715
Number of read heads Max. two read heads per evaluation unit
Connection (plug-in screw terminals/coded) 0.25 - 2.5 mm²
Operating voltage UB(regulated, residual ripple < 5%) 21 24 27 V DC
For the approval according to the following applies Operation only with UL class 2 power supply or equivalent measures
Current consumption IB(with relay energized) 1) - 220 270 mA
External fuse (operating voltage UB) 0.4 - 8 A
Safety contacts 2 (relays with internally monitored contacts)
Switching current (relay outputs)
mA
- at switching voltage AC/DC 1…60 V 1 2) - 300
- at switching voltage AC/DC 17…30 V 15 - 6,000
- at switching voltage AC 17…230 V 15 - 1,500
Switching load according to Max. AC 30 V, class 2/max. DC 60 V, class 2
External fuse (safety circuit) according to EN60269-1 6 AgG or 6 A circuit breaker (characteristic B or C)
Utilization category according to EN60947-5-1 AC-12 60 V 0.3 A/DC-12 60 V 0.3 A
AC-12 30 V 6 A/DC-12 30 V 6 A
AC-15 230 V 2 A / DC-13 24 V 3 A
Rated insulation voltage Ui250 V
Rated impulse withstand voltage Uimp 4 kV
Rated conditional short-circuit current 100 A
Resilience to vibration Acc. to EN60947-5-2
Mechanical operating cycles (relays) 10x106
Switching delay from state change 3)
- Two activated actuators - - 290 ms
- One activated actuator - - 210
Discrepancy time of the operating points of both relays
(with two activated actuators) - - 240 ms
Manual start operating mode
- Start button actuating duration 250 - - ms
- Start button response delay - 200 300
Current via feedback loop Y1/Y2 5 8 10 mA
Permissible resistance via feedback loop - - 600 W
Ready delay 4) - 10 12 s
Dwell time 5) 3 - - s
Switching frequency, max 6) - - 0.25 Hz
Repeat accuracy R acc. to ENIEC60947-5-3 ≤10 %
Monitoring outputs (diagnostics DIA, monitoring outputs
01…02, semiconductor output, p-switching, short circuit-pro-
tected)
- Output voltage 0.8xUB- UBV DC
- Max. load - - 20 mA
Start button input S, test input TST
- Input voltage LOW 0 - 2 V DC
HIGH 15 - UB
- Input current HIGH 5 8 10 mA
EMC protection requirements Acc. to EN60947-5-3
Reliability values acc. to ENISO13849-1
as a function of the switching current at 24 V DC ≤0.1 A ≤1 A ≤3 A
Category 4
Performance Level (PL) e
PFHD1.3x10-8 1.5x10-8
Mission time 20 years
Number of switching cycles/year 506 000 100 000 23 000
Diagnostic coverage DC 99 %
MTTFD136 years
1) Without taking into account the load currents on the monitoring outputs.
2) If a switching current > 300 mA in conjunction with a switching voltage > 15 V or an inductive or capacitive load is switched once using the relay outputs, it is no longer possible to reliably switch small currents
(< 15 mA) due to the contact erosion on the gold contacts.
3) Corresponds to the risk time according to EN60947-5-3. This is the maximum switch-off delay for the safety outputs following removal of the actuator. In case of EMC interference in excess of the requirements
in accordance with EN60947-5-3, the switch-off delay can increase to max. 430 ms. After a brief actuation < 0.4 s, the switch-on delay can increase to max. 3 s if this is followed immediately by further actuation.
4) After the operating voltage is switched on, the relay outputs are switched off and the monitoring outputs are set to LOW potential during the ready delay. For the visual indication of the delay, the green STATE
LED ashes at a frequency of approx. 15Hz.
5) The dwell time is the time that the actuator must be inside or outside the operating distance.
6) In case of monitoring with feedback loop, the actuators must remain outside the operating distance, e.g. with a door open, until the feedback loop is closed.
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