EUCHNER CES-A-AEA-02B, CES-A-AEA-04B Operating Instructions 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 conguration/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

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(translation of the original operating instructions) 2084606-19-09/17

1. About this document

1.1. Scope

This document is valid for

Ì Non-Contact Safety System CES‑A‑AEA‑02B, evaluation unit for two read heads (order no. 092560)
Ì Non-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

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)

Ì Basic safety information
Ì Maintenance 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 ENIEC60947-5-3.

The system consists of evaluation unit, read head and actuator. It forms an interlocking device with high coding level (type4).

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:

Ì Starting commands that cause a dangerous machine function must become active only when the safety guard is closed.
Ì Opening the safety guard triggers a stop command.
Ì Closing 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:

Ì ENISO13849-1, Safety of machinery – Safety-related parts of control systems – Part 1: General principles for design
Ì ENISO12100, Safety of machinery – General principles for design – Risk assessment and risk reduction
Ì IEC62061, 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:

Ì ENISO13849-1, Safety of machinery – Safety-related parts of control systems – Part 1: General principles for design
Ì ENISO14119, Safety of machinery – Interlocking devices associated with guards – Principles for design and selection
Ì EN60204-1, Safety of machinery – Electrical equipment of machines.

The following components can be connected to the evaluation unit CES-A-AEA…:

Ì CES read heads
Ì CEM read heads
Ì CET 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!

Ì The 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.

Ì Correct use requires observing the permissible operating parameters (see technical data).
Ì If a data sheet is included with the product, the information on the data sheet applies.
Ì It 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

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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)

Ì Safety function:

- The safety contacts are switched off when the safety guard is open (see chapter 11. Technical data on page 19).

Ì Safety characteristics: category, Performance Level, PFH

D

(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 fulll
a personal protection function.

Ì Safety 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 bypass­ing according to ENISO14119:2013, section 7.

Ì The switching operation must be triggered only by actuators designated for this purpose.
Ì Mounting, 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.

Ì The 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 instruc­tions from www.euchner.com.

Operating Instructions
Non-Contact Safety System CES-A-AEA-02B/CES-A-AEA-04B

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(translation of the original operating instructions) 2084606-19-09/17

6. Function

The safety system consists of three components:

Ì Coded actuator
Ì Read head
Ì Evaluation unit

The number of read heads that can be connected depends on the evaluation unit:

Ì CES-A-AEA-02B:  two read heads
Ì CES-A-AEA-04B:  four read heads

The evaluation unit can be congured 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 conguration is dened 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 two­core 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.

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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

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

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(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

A

B

C

D

0 V

0V

S

H11

H31

H21

H41

H12

H32

H22

H42

SH1

SH3

SH2

SH4

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 DIA 23

Y1

24 Y2

+24 V

KA

KB

CPU-A

(Typ 1)

LED

STATE

OUT

DIA

Star tStart

CPU-B

(Typ 2)

STATEOUT DIA

UB

Y

S

H4

H3

H2

H1

ON

1 2

3
4
5 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.

Ì Read heads and actuators must not be used as a mechanical end stop.
Ì Observe EN ISO 14119:2013, sections 5.2 and 5.3, for information about fastening the safety

switch and the actuator.

Ì Observe EN ISO 14119:2013, section 7, for information about reducing the possibilities for by-

passing an interlocking device.

Ì The evaluation unit must be mounted in a control cabinet with a minimum degree of protection of

IP54. A snap-in element on the rear of the device is used for fastening to a mounting rail.

Ì If several evaluation units are mounted side by side in a control cabinet without air circulation (e.g.

fan), a minimum distance of 10mm must be maintained between the evaluation units. This dis­tance enables the heat from the evaluation unit to dissipate.

Important!

Ì From the assured switch-off distance S

ar

, the safety outputs are safely shut down.

Ì When mounting several read heads, observe the stipulated minimum distance to avoid mutual in-

terference.

- For CES-A-LNA/-LCA s

min

=50mm

- For CES-A-LMN s

min

=20mm

- For CES-A-LQA s

min

=80mm

s

min

Ì If 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:

Ì Actuator and read head must be tted so that

- the front faces are at the minimum switch-on distance 0.8xSao 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.

Ì Pay attention to the maximum tightening torque for the read head or safety switch and actuator mountings of 1Nm. For

read heads/actuators made of PE-HD, the maximum tightening torque is only 0.5Nm.

Operating Instructions
Non-Contact Safety System CES-A-AEA-02B/CES-A-AEA-04B

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(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.

Ì Monitoring outputs must not be used as safety outputs.
Ì Lay 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.

Ì All 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 equiv­alent isolation measures.

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

must be protected with a free-wheeling diode for this purpose. The switch-on current may have to
be limited for capacitive loads.

Ì The tightening torque for the screws on the connection terminals must be 0.6…0.8Nm.
Ì The 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.

Ì The 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. 3cm).

8.1. Notes about

Important!

Ì For use and operation as per the requirements

1)

, 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 30V/DC and a limited

current of max. 8A.

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

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

Ì Use 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

Ì The operating voltage U

B

is reverse polarity protected.

Ì The connections for the read heads are not short circuit-proof.
Ì A short circuit between 13/14 and 23/24 can be detected only by means of external pulsing.
Ì A 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

Ì Provide external contact fuses (6AgG fuse or 6A circuit breaker, characteristic B or C) for relay outputs.
Ì The power supply must be protected with a max. 8A fuse ahead of terminal U

B

.

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

Read­head

1

H11

Trans­ponder

O3

H12

O4

-V1

SH2

DIA

-K1

A1

A2

Read­head

2

H21

Trans­ponder

23

H22

24

-V2

13 14

-K2

A1

A2

feedback loop

Y1

EUCHNER

Y2

-K2

21

22

-K1

21

22

S

Start

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

Read­head

1

H11

Trans­ponder

O2

H12

EUCHN ER

O3

SH2

O4

-V1

Read­head

2

H21

DIA

Trans­ponder

H22

-K1

A1

A2

23

SH3

24

-V2

Read-

head

3

H31

Trans­ponder

13

H32

14

-K2

A1

A2

feedback loop

SH4

Y1

Read­head

4

H41

Y2

-K2

21

22

-K1

21

22

Trans­ponder

H42

S

Start

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.