EUCHNER CET.-AP Series, CET.-AR Series Operating Instructions Manual

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Operating Instructions

Transponder-Coded Safety Switch With Guard Locking

CET.-AP-… (Unicode/Multicode)

Operating Instructions Transponder-Coded Safety Switch CET.-AP-…

(Translation of the original operating instructions) 2122242-04-05/18

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 ................................................................................... 7

6. Function ............................................................................................................... 8

6.1. Guard locking monitoring .................................................................................................................8

6.2. Monitoring output (OUT) ..................................................................................................................8

6.3. Door monitoring output (OUTD) .......................................................................................................9

6.4. Diagnostic output (DIA) ....................................................................................................................9

6.5. Guard locking on version CET3 ........................................................................................................9

6.6. Guard locking on version CET4 ........................................................................................................9

6.7. Start button and feedback loop (optional) .......................................................................................10

6.8. Switching states ...........................................................................................................................10

7. Manual release ................................................................................................... 11

7.1. Auxiliary release and auxiliary key release (can be retrotted) ...........................................................11

7.1.1. Actuating auxiliary release .............................................................................................11

7.1.2. Actuating auxiliary key release .......................................................................................11

7.2. Emergency unlocking (can be retrotted) ........................................................................................12

7.2.1. Actuating emergency unlocking ......................................................................................12

7.3. Escape release (optional) ..............................................................................................................12

7.3.1. Actuating escape release...............................................................................................12

7.4. Wire front release (optional) ...........................................................................................................13

7.4.1. Laying wire front release ................................................................................................13

8. Changing the approach direction ........................................................................ 13

9. Mounting ............................................................................................................ 14

10. Electrical connection .......................................................................................... 16

10.1. Notes about .........................................................................................................................17

10.2. Safety in case of faults ..................................................................................................................17

10.3. Fuse protection for power supply ...................................................................................................17

10.4. Requirements for connection cables ...............................................................................................18

10.5. Connector assignment of safety switch CET-AP for connection to decentralized peripheral systems

with plug connectors 2 x M12 (5-pin; pin 5 not used) without door monitoring output .........................19

2122242-04-05/18 (Translation of the original operating instructions)

Operating Instructions

Transponder-Coded Safety Switch CET.-AP-…

10.6. Connector assignment of safety switch CET-AP for connection to decentralized peripheral systems with plug connectors 2 x M12 (5-pin; pin 5 not used) and additional door monitoring output OUTD

on X2.2 .......................................................................................................................................19

10.7. Connector assignment of safety switch CET-AP with plug connector 1 x M12 (8-pin) ..........................19

10.8. Connector assignment of safety switch CET-AP with plug connector M23 (RC18) ...............................20

10.9. Connection ...................................................................................................................................21

10.10. Notes on operation with safe control systems .................................................................................22

10.11. Devices for direct connection to IP 65 eld modules........................................................................22

11. Setup ................................................................................................................. 23

11.1. LED displays ................................................................................................................................23

11.2. Teach-in function for actuator (only for unicode evaluation) ...............................................................23

11.2.1. Preparing device for the teach-in operation and teaching in actuator .................................24

11.3. Functional check ...........................................................................................................................25

11.3.1. Mechanical function test ................................................................................................25

11.3.2. Electrical function test ...................................................................................................25

12. System status table ............................................................................................ 26

13. Technical data .................................................................................................... 27

13.1. Technical data for safety switch CET.-AP-C..-AH-… ...........................................................................27

13.1.1. Typical system times .....................................................................................................28

13.2. Dimension drawing for safety switch CET.-AP-… .............................................................................. 29

13.3. Technical data for actuator CET-A-B… ............................................................................................31

13.3.1. Dimension drawing for actuator CET-A-BWK-50X ..............................................................31

14. Ordering information and accessories ................................................................. 32

15. Inspection and service ........................................................................................ 32

16. Service .............................................................................................................. 32

17. Declaration of conformity ................................................................................... 33

Operating Instructions Transponder-Coded Safety Switch CET.-AP-…

(Translation of the original operating instructions) 2122242-04-05/18

1. About this document

1.1. Scope

These operating instructions are valid for all CET.-AP from version V1.5.0 and for CET.-AP with lockout mechanism from V1.5.1. These operating instructions, the document “Safety information and maintenance” and any enclosed data sheet form the complete user information for your device.

1.2. Target group

Design engineers and installation planners for safety devices on machines, as well as setup and servicing staff possessing special expertise in handling safety components.

1.3. Key to symbols

Symbol/depiction Meaning

Printed document

www

Document is available for download at www.euchner.com

Document on CD

MEM

This section is applicable only if the memory card is used

DANGER

WARNING

CAUTION

Safety precautions

Danger of death or severe injuries Warning about possible injuries Caution Device damage possible

NOTICE

Important!

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 CET-AR/ CET-AP (2105517)

Basic information about safe setup and maintenance

Operating Instructions (2122242)

(this document)

Possibly enclosed data sheet

Item-specic information about deviations or additions

Important!

Always read all documents to gain a complete overview of safe installation, setup and use of the device. The documents can be downloaded from www.euchner.com. For this purpose enter the doc. no. in the search box.

2122242-04-05/18 (Translation of the original operating instructions)

Operating Instructions

Transponder-Coded Safety Switch CET.-AP-…

2. Correct use

Safety switches series CET-AP are interlocking devices with guard locking (type4). The device complies with the requirements according to ENIEC60947-5-3. Devices with unicode evaluation possess a high coding level; devices with multicode evaluation possess a low coding level.

In combination with a movable guard and the machine control, this safety component prevents the guard from being opened while a dangerous machine function is being performed.

This means:

Ì Starting commands that cause a dangerous machine function must become active only when the guard is closed and

locked.

Ì The guard locking device must not be unlocked until the dangerous machine function has ended. Ì Closing and locking a guard must not cause automatic starting of a dangerous machine function. A separate start com-

mand must be issued. For exceptions, refer to ENISO12100 or relevant C-standards.

Devices from this series are also suitable for process protection.

Before the device is used, a risk assessment must be performed on the machine, e.g. in accordance with 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, particularly based on 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 – Part 1: General requirements

The safety switch is allowed to be operated only in conjunction with the intended EUCHNER actuator 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!

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 It is only allowed to use components that are permissible in accordance with the table below.

Table 1: Possible combinations for CET components

Safety switch

Actuator

CET-A-B…

CET.-AP-… (Unicode/Multicode)

Key to symbols Combination possible

Operating Instructions Transponder-Coded Safety Switch CET.-AP-…

(Translation of the original operating instructions) 2122242-04-05/18

3. Description of the safety function

Devices from this series feature the following safety functions:

Monitoring of guard locking and the position of the guard (interlocking device with guard locking according to ENISO14119)

Ì Safety function (see chapter 6.8. Switching states on page 10):

- The safety outputs are switched off when guard locking is released (monitoring of the locking element).

- The safety outputs are switched off when the guard is open (monitoring of the door position).

- Guard locking can be activated only when the actuator is located in the switch head (failsafe locking mechanism).

Ì Safety characteristics: category, Performance Level, PFH

(see chapter 13. Technical data on page 27).

Activation of guard locking

If the device is used as guard locking for personnel protection, control of guard locking must be regarded as a safety function.

The device does not feature a safety characteristic for the control of the guard locking, because the guard locking solenoid is completely disconnected from outside the device (no control function within the device). It therefore does not contribute to the failure probability.

The safety level for the control of guard locking is determined exclusively by the external control (e.g. PFH

ext.

for the

standstill monitor).

Guardlocking Device

PFH

ext.

(e.g. standstill

monitor)

(locking mean)

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.

2122242-04-05/18 (Translation of the original operating instructions)

Operating Instructions

Transponder-Coded Safety Switch CET.-AP-…

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 guard particularly

Ì after any setup work Ì after the replacement of a CET component Ì after an extended period without use Ì after every fault

Independent of these checks, the safe function of the guard 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 perform a personnel 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 Prevent bypassing by means of replacement actuators (only for multicode evaluation). For this

purpose, restrict access to actuators and to keys for releases, for example.

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.

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 Transponder-Coded Safety Switch CET.-AP-…

(Translation of the original operating instructions) 2122242-04-05/18

6. Function

The device permits the locking of movable guards.

The system consists of the following components: coded actuator (transponder) and switch.

Whether the device learns the complete actuator code (unicode) or not (multicode) depends on the respective version.

Ì Devices 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.

Ì Devices with multicode evaluation: Unlike systems with unique code detec-

tion, on multicode devices a specic code is not requested but instead it is only checked whether the actuator is of a type that can be detected by the system (multicode detection). There is no exact comparison of the actuator code with the taught-in code in the safety switch (unique code detection). The system possesses a low coding level.

When the guard is closed, the actuator is moved towards the safety switch. When the switch-on distance is reached, power is supplied to the actuator by the switch and data are transferred.

The safety outputs are switched on when the locking pin is in the recess (state: door closed and locked) and a permissible code is detected.

When guard locking is released, the safety outputs and the monitoring output (OUT) are switched off.

Important!

Ì CET3 (closed-circuit current principle)

The activation of the guard locking solenoid results in the shutdown of the safety outputs OA/OB and the monitoring output OUT.

Ì CET4 (open-circuit current principle)

The interruption (>5ms) of the power supply to UCM results in the shutdown of the safety outputs OA/OB and the monitoring output OUT.

Ì In both cases the outputs are shut down independent of the actual posi-

tion of the solenoid.

Ì For more detailed information, see also chapter 10.10. Notes on opera‑

tion with safe control systems on page 22.

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 switch on the safety outputs (e.g. on starting).

6.1. Guard locking monitoring

All versions feature two safe outputs for monitoring guard locking (OA and OB). The safety outputs are switched off when guard locking is released.

6.2. Monitoring output (OUT)

The monitoring output is switched on as soon as guard locking is active (state: door closed and locked) and the transponder has been detected.

Ramp/switch head

Plunger

Ramp

Transponder

Springmounted guard locking pin

Recess

2122242-04-05/18 (Translation of the original operating instructions)

Operating Instructions

Transponder-Coded Safety Switch CET.-AP-…

6.3. Door monitoring output (OUTD)

Versions CET3 and CET4 feature a door monitoring output (OUT D). The door monitoring output is switched on as soon as the actuator is above the extended plunger (state: guard closed and not locked). The door monitoring output also remains switched on when guard locking is active.

6.4. Diagnostic output (DIA)

Some versions have a diagnostic output. The diagnostics output is switched on in the event of a fault (switch-on condition as for DIA LED).

6.5. Guard locking on version CET3

(Guard locking actuated by spring force and released by power-ON)

Activating guard locking: close guard; no voltage at the solenoid.

Releasing guard locking: apply voltage to the solenoid.

The spring-operated guard locking functions in accordance with the closed-circuit current principle. If the voltage is interrupted at the solenoid, the guard locking remains active and the guard cannot be opened directly.

Important!

If the guard is open when the power supply is interrupted and is then closed, guard locking is activated. This can lead to persons being locked in unintentionally.

The actuator’s guard locking pin cannot be moved out of the recess and the guard is locked as long as the plunger is pressed down by the actuator.

When voltage is present at the guard locking solenoid, the plunger is extended and lifts the actuator’s guard locking pin above the edge of the recess. The guard can be opened.

6.6. Guard locking on version CET4

(Guard locking actuated by power-ON and released by spring force)

Important!

Use as guard locking for personnel protection is possible only in special cases, after strict assessment of the accident risk (see ENISO14119:2013, section 5.7.1)!

Activating guard locking: apply voltage to the solenoid.

Releasing guard locking: disconnect voltage from the solenoid.

The magnetically actuated guard locking operates in accordance with the open-circuit current principle. If the voltage is interrupted at the solenoid, the guard locking is released and the guard can be opened directly!

The guard can be opened as long as the plunger is held in the extended position.

The plunger is released when voltage is present at the guard locking solenoid. The actuator’s guard locking pin can now press the plunger down. The guard is locked as soon as the guard locking pin is fully inserted into the recess.

Operating Instructions Transponder-Coded Safety Switch CET.-AP-…

(Translation of the original operating instructions) 2122242-04-05/18

6.7. Start button and feedback loop (optional)

A start button and a feedback loop can be connected (for monitoring downstream relays and contactors) (inputY).

Important!

Faults on the start button/in the feedback loop are not detected. This can lead to unintentional automatic starting.

On devices with start button and feedback loop, safety outputs are switched on only when the start button is pressed and the feedback loop is closed. Start button and feedback loop must be closed for at least500 ms.

The monitoring output OUT is switched on as soon as guard locking is active. The status of the feedback loop/the start button has no effect on this aspect (see also chapter 12. System status table on page 26).

6.8. Switching states

The detailed switching states for your switch can be found in the system status table. All safety outputs, monitoring outputs and LED displays are described there.

Guard closed and locked Guard closed and not locked Guard open

Voltage on guard locking solenoid CET3 off on (irrelevant)

Voltage on guard locking solenoid CET4 on off (irrelevant)

Safety outputs OA and OB

on off off

Monitoring output OUT on off off

Door monitoring output OUT D

(only CET3 and CET4)

on on off

2122242-04-05/18 (Translation of the original operating instructions)

Operating Instructions

Transponder-Coded Safety Switch CET.-AP-…

7. Manual release

Some situations require the guard locking to be released manually (e.g. malfunctions or an emergency). A function test should be performed after release.

More information on this topic can be found in the standard ENISO14119:2013, section 5.7.5.1. The device can feature the following release functions:

7.1. Auxiliary release and auxiliary key release (can be retrotted)

In the event of malfunctions, the guard locking can be released with the auxiliary release irrespective of the state of the solenoid.

The safety outputs are switched off when the auxiliary release is actuated. Use the safety outputs to generate a stop command.

The monitoring output OUT is switched off; OUTD can assume an undened state. Open the guard and close it again after resetting the auxiliary release. The device will then operate normally again.

7.1.1. Actuating auxiliary release

1. Unscrew locking screw.

2. Using a screwdriver, turn the auxiliary release to in the direction of the arrow.

¨ Guard locking is released.

Important!

Ì The actuator must not be under tensile stress during manual release. Ì After use, reset the auxiliary release and screw in and seal the locking

screw (e.g. with sealing lacquer).

Ì The auxiliary key release must not be used to lock the switch during

servicing to prevent activation of guard locking, for example.

Ì Loss of the release function due to mounting errors or damage during

mounting.

Ì Check the release function every time after mounting. Ì Please observe the notes on any enclosed data sheets.

7.1.2. Actuating auxiliary key release

On devices with auxiliary key release (can be retrotted), simply turn the key to release. Function as for auxiliary release. For mounting, see the auxiliary key release supplement.

Locking screw

Auxiliary release

Operating Instructions Transponder-Coded Safety Switch CET.-AP-…

(Translation of the original operating instructions) 2122242-04-05/18

7.2. Emergency unlocking (can be retrotted)

Permits opening of a locked guard from outside the danger zone without tools. For mounting, see the mounting supplement.

Important!

Ì It must be possible to operate the emergency unlocking manually from outside the protected area

without tools.

Ì The emergency unlocking must possess a marking indicating that it may be used only in an emer-

gency.

Ì The actuator must not be under tensile stress during manual release. Ì The emergency unlocking must be sealed or the misuse of the release function must be prevented

in the control system.

Ì The unlocking function meets all other requirements from ENISO14119. Ì The emergency unlocking meets the requirements of Category B according to

ENISO13849-1:2015.

Ì Loss of the release function due to mounting errors or damage during mounting. Ì Check the release function every time after mounting. Ì Please observe the notes on any enclosed data sheets.

7.2.1. Actuating emergency unlocking

Ì Turn emergency unlocking clockwise until it clicks into place.

¨ Guard locking is released.

To reset, press the snap-in bolt inward using a small screwdriver or similar tool and turn the emergency unlocking back.

The safety outputs are switched off when the emergency unlocking is actuated. Use the safety outputs to generate a stop command.

The monitoring output OUT is switched off; OUTD can assume an undened state. Open the guard and close it again after resetting the emergency unlocking. The device will then operate normally again.

7.3. Escape release (optional)

Permits opening of a locked guard from the danger zone without tools (see chapter 13.2. Di‑ mension drawing for safety switch CET.‑AP‑… on page 29).

Important!

Ì It must be possible to actuate the escape release manually from in-

side the protected area without tools.

Ì It must not be possible to reach the escape release from the outside. Ì The actuator must not be under tensile stress during manual release. Ì The escape release meets the requirements of Category B according

to ENISO13849-1:2015.

7.3.1. Actuating escape release

Ì Press the red release knob to the stop.

¨ Guard locking is released.

Pull the knob out again to reset.

The safety outputs are switched off when the escape release is actuated. Use the safety outputs to generate a stop command.

The monitoring output OUT is switched off; OUTD can assume an undened state. Open the guard and close it again after resetting the escape release. The device will then operate normally again.

Snap-in bolt

2122242-04-05/18 (Translation of the original operating instructions)

Operating Instructions

Transponder-Coded Safety Switch CET.-AP-…

7.4. Wire front release (optional)

Release via a pull wire. Depending on the type of attachment, the wire front release can be used as emergency unlocking or escape release.

The following applies to non-latching wire front releases.

If the release is to be used as emergency unlocking, one of the following measures must be taken (see EN ISO 14119:2013, section 5.7.5.3):

Ì Install the release so that it can be reset only with the aid of a tool. Ì Alternatively, the reset can be undertaken at the control system level, e.g. by means of a

plausibility check (status of the safety outputs does not match the guard locking activation signal).

The emergency-unlocking specications in chapter 7.2 on Page 12 apply irrespective of this information.

Important!

Ì The wire front release meets the requirements of Category B accord-

ing to ENISO13849-1:2015.

Ì The correct function depends on the laying of the pull wire and on the

attachment of the pull handle, and this is the responsibility of the plant manufacturer.

Ì The actuator must not be under tensile stress during manual release.

7.4.1. Laying wire front release

Important!

Ì Loss of the release function due to mounting errors, damage or wear. Ì Check the release function every time after mounting. Ì When routing the wire front release, ensure that it operates smoothly. Ì Observe the min. bending radius (100mm) and minimize the number of bends. Ì The switch is not allowed to be opened. Ì Observe the notes on the enclosed data sheets.

8. Changing the approach direction

1. Remove the screws from the safety switch

2. Set the required direction

3. Tighten the screws with a torque of 1.5Nm

Figure 1: Changing the approach direction

Operating Instructions Transponder-Coded Safety Switch CET.-AP-…

(Translation of the original operating instructions) 2122242-04-05/18

9. Mounting

CAUTION

Safety switches must not be bypassed (bridging of contacts), turned away, removed or otherwise rendered ineffective.

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

passing an interlocking device.

Ì The max. achievable category according to EN13849-1 depends on the installation position (see

chapter 13. Technical data on page 27).

NOTICE

Risk of damage to equipment and malfunctions as a result of incorrect installation.

Ì Safety switches and actuators must not be used as an 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 Protect the switch head against damage, as well as penetrating foreign objects such as swarf,

sand and blasting shot, etc. The switch should be installed with the actuating head down for this purpose.

Ì Observe the min. door radii (see gure below). Ì Ensure that the actuator contacts the ramp in the designated area (see gure below). Marks on the

ramp specify the prescribed approach zone.

Tip!

EUCHNER offers special cover plates to improve protection against tampering. These accessories can be found at www.euchner.com.

min R=300

min R=1000

min R800

Figure 2: Door radii and approach zone

2122242-04-05/18 (Translation of the original operating instructions)

Operating Instructions

Transponder-Coded Safety Switch CET.-AP-…

Note the following points:

Actuator and safety switch must be tted so that

Ì the active faces of the actuator and the safety switch are parallel with each other. Ì the actuator is fully inserted into the switch recess when the guard is closed. Ì no dirt can accumulate in the recess.

= 90°

74,5 ± 4 mm

Anfahrbereich/ Approach Zone

Operating Instructions Transponder-Coded Safety Switch CET.-AP-…

(Translation of the original operating instructions) 2122242-04-05/18

10. Electrical connection

WARNING

If there is a mistake, loss of the safety function due to incorrect connection.

Ì To ensure safety, both safety outputs (OA and OB) must always be evaluated. Ì Monitoring outputs must not be used as safety outputs. Ì Lay the connection cables with protection to prevent the risk of short circuits.

CAUTION

Risk of damage to equipment or malfunctions as a result of incorrect connection.

Ì The power supply for the evaluation electronics is electrically isolated from the power supply for

the guard locking solenoid.

Ì The teach-in input and feedback loop are at ground potential 0VU

Ì The device generates its own test pulses on the output lines OA/OB. A downstream control system

must tolerate these test pulses, which may have a length of up to 0.3ms. The test pulses are output only if the safety outputs are switched on. Depending on the inertia of the downstream device (control system, relay, etc.), this can lead to short switching processes.

Ì The inputs on an evaluation unit connected must be positive-switching, as the two outputs on the

safety switch deliver a level of +24V in the switched-on state.

Ì The device is suitable for operation on earth-leakage monitors. Ì All the electrical connections must either be isolated from the mains supply by a safety transformer

according to IEC 61558-2-6 with limited output voltage in the event of a fault, or by other equivalent isolation measures (PELV).

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. RC interference suppression units must not be used.

Ì Power 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.

Ì To avoid EMC interference, the physical environmental and operating conditions at the in-

stallation site of the device must comply with the requirements according to the standard EN60204-1:2006, section 4.4.2 (EMC).

Please 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!

If the device does not appear to function when operating voltage is applied (e.g. green STATE LED does not ash), the safety switch must be returned unopened to the manufacturer.

2122242-04-05/18 (Translation of the original operating instructions)

Operating Instructions

Transponder-Coded Safety Switch CET.-AP-…

10.1. Notes about

Important!

Ì For use and operation as per the requirements*, a power supply with the feature “for use in

class 2 circuits” must be used. The same requirement applies to the safety outputs. Alternative solutions must comply with the following requirements:

- 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 For use and applications as per the requirements

, a connection cable listed under UL cate-

gory code CYJV/7 must be used.

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).

10.2. Safety in case of faults

Ì The operating voltage U

and the solenoid voltage UCM are reverse polarity protected.

Ì The safety outputs OA/OB are short circuit-proof. Ì A short circuit between OA and OB is detected by the switch. Ì A short circuit in the cable can be excluded by laying the cable with protection.

10.3. Fuse protection for power supply

The power supply must be provided with fuse protection depending on the number of switches and current required for the outputs. The following rules apply:

Max. current consumption I

max

= IUB + I

OUT

+ IOA+OB (+ I

OUTD

IUB = Switch operating current (80mA)

OUT

/ I

OUT D

= Load current of monitoring outputs (2x max. 50mA)

OA+OB

= Load current of safety outputs OA + OB (2xmax. 200mA)

* only for version with door monitoring output

Operating Instructions Transponder-Coded Safety Switch CET.-AP-…

(Translation of the original operating instructions) 2122242-04-05/18

10.4. Requirements for connection cables

CAUTION

Risk of damage to equipment or malfunctions as a result of incorrect connection cables.

Ì Use connection components and connection cables from EUCHNER Ì On the usage 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 connection cables:

For safety switch CET-AP with plug connector M12

Parameter Value Unit

Conductor cross-section, min. 0.25 mm² R max. 60 W/km C max. 120 nF/km L max. 0.65 mH/km Recommended cable type LIYY 8 x 0.25mm²

For safety switch CET-AP with plug connector M23 (RC18)

Parameter Value Unit

Conductor cross-section, min. 0.25 mm² R max. 60 W/km C max. 120 nF/km L max. 0.65 mH/km Recommended cable type

LIFY11Y min. 19-core

2122242-04-05/18 (Translation of the original operating instructions)

Operating Instructions

Transponder-Coded Safety Switch CET.-AP-…

10.5. Connector assignment of safety switch CET-AP for connection to decentralized peripheral systems with plug connectors 2 x M12 (5-pin; pin 5 not used) without door monitoring output

Wiring diagram A

Plug connector

(view of connection side)

Pin Designation Function

Wire color of

connection cable

2 x M12

X2.5

X2.4

X2.3

X2.1

X2.2

X1.5

X1.4

X1.3

X1.1

X1.2

X 1.1 U

Operating voltage, 24 V DC BN X 1.2 OA Safety output channelA WH X 1.3 0V Operating voltage, 0 V BU X 1.4 OB Safety output channelB BK X 1.5 - n.c. GY

X 2.1 - n.c. BN X 2.2 - n.c. WH X 2.3 0V U

0V solenoid BU

X 2.4 U

Operating voltage of guard locking solenoid 24 V DC BK

X 2.5 - n.c. GY

1) Only for standard EUCHNER connection cable

Wiring diagram B

Plug connector

(view of connection side)

Pin Designation Function

Wire color of

connection cable

2 x M12

X2.5

X2.4

X2.3

X2.1

X2.2

X1.5

X1.4

X1.3

X1.1

X1.2

X 1.1 U

Operating voltage, 24 V DC BN X 1.2 OA Safety output channelA WH X 1.3 0V Operating voltage, 0 V BU X 1.4 OB Safety output channelB BK X 1.5 - n.c. GY

X 2.1 - n.c. BN X 2.2 OUT D Door monitoring output WH X 2.3 0V U

0V solenoid BU

X 2.4 U

Operating voltage of guard locking solenoid 24 V DC BK

X 2.5 - n.c. GY

1) Only for standard EUCHNER connection cable

10.7. Connector assignment of safety switch CET-AP with plug connector 1 x M12 (8-pin)

Wiring diagram C/D

Plug connector

(view of connection side)

Pin Designation Function

Wire color of

connection cable

1 x M12

1 U

Operating voltage of guard locking solenoid 24 V DC WH

2 U

Operating voltage, 24 V DC BN

3 OA Safety output channelA GN 4 OB Safety output channelB YE

OUT

Monitoring output GY

DIA 6 OUT D Door monitoring output PK 7 0 V U

Operating voltage, 0 V BU

8 0V U

0V solenoid RD

1) Only for standard EUCHNER connection cable

Operating Instructions Transponder-Coded Safety Switch CET.-AP-…

(Translation of the original operating instructions) 2122242-04-05/18

10.8. Connector assignment of safety switch CET-AP with plug connector M23 (RC18)

Wiring diagram E

Plug connector

(view of connection side)

Pin Designation Function

Wire color of

connection cable

1 x RC18

1 U

Operating voltage of guard locking solenoid 24 V DC VT 2 - n.c. 3 - n.c. 4 OA Safety output channelA RDBU 5 OB Safety output channelB GN 6 U

Operating voltage, 24 V DC BU 7 RST Reset GYRD 8 OUT D Door monitoring output WHGN 9 - n.c. -

10 OUT Monitoring output WHGY 11 - n.c. 12 FE Function earth YEGN 13 J Teach-in input PK 14 - n.c. Do not connect to 0 V! 15 - n.c. BNGN 16 - n.c. YEBN 17 - n.c. 18 0V U

0V solenoid YE

19 0 V U

Operating voltage, 0 V BN

1) Only for standard EUCHNER connection cable

2122242-04-05/18 (Translation of the original operating instructions)

Operating Instructions

Transponder-Coded Safety Switch CET.-AP-…

10.9. Connection

Connect the device as shown in Figure 3. The monitoring outputs can be routed to a control system.

The switches can be reset via the RST input. To do this, a voltage of 24V is applied to the RST input for at least 3s.

WARNING

If there is a mistake, loss of the safety function due to incorrect connection.

Ì To ensure safety, both safety outputs (OA and OB) must always be evaluated.

Important!

Ì The example shows only an excerpt that is relevant for connection of the CET system. The exam-

ple illustrated here does not show complete system planning. The user is responsible for safe integration into the overall system. Detailed application examples can be found at www.euchner.com. Simply enter the order number in the search box. All available connection examples for the device can be found in “Downloads.”

24 V DC

GND

-F1 -F2

Connected load

Door monitoring

Monitoring Output

Read Head

Actuator

RST

Safety Outputs

NC14NC

-B10

UCM

0V(UCM)

OUTD

OUT

NC2NC3NC9NC

CET

-S1

-S2

Figure 3: Connection example for CET-AP with plug connector M23 (wiring diagram E)

Operating Instructions Transponder-Coded Safety Switch CET.-AP-…

(Translation of the original operating instructions) 2122242-04-05/18

10.10. Notes on operation with safe control systems

Please observe the following requirements for connection to safe control systems:

Ì Use a common power supply for the control system and the connected safety switches. Ì The device tolerates interruptions in the operating voltage of up to 5ms at U

and UCM. If the supply voltage is connect-

ed to a terminal of a safe control system, this output must provide sufcient electrical current.

Ì The safety outputs (OA and OB) can be connected to the safe inputs of a control system. Prerequisite: the input must

be suitable for pulsed safety signals (OSSD signals, e.g. from light grids). The control system must tolerate test pulses on the input signals. This normally can be set up by parameter assignment in the control system. Observe the notes of the control system manufacturer. For the test-pulse duration of your safety switch, please refer to chapter 13.1. Techni‑ cal data for safety switch CET.‑AP‑C..‑AH‑… on page 27.

A detailed example of connecting and setting the parameters of the control system is available for many devices at www.euchner.com in the area Download » Applications » CET. The features of the respective device are dealt with there in greater detail.

10.11. Devices for direct connection to IP 65 eld modules

The version CET.-AP-...-SI-... (wiring diagram A) is optimized for connection to decentralized peripheral systems, such as the ET200pro series from Siemens. The devices are parameterized and connected like an OSSD (e.g. like light curtains).

The two 5-pin M12 plug connectors can be connected directly to the sockets of an IP 65 eld module (e.g. ET200pro). If ying leads are used, connection to IP 20 input and output modules (e.g. ET200s) is naturally also possible.

Important!

Observe the following notes prior to connection:

Ì Use only CET-AP versions that are intended to be used for this purpose. Ì Parameter assignment must be performed for the input/output modules (see application example

at www.euchner.com in the area Download » Applications » CET).

Ì Additionally observe notes from the control system manufacturer where necessary.

2122242-04-05/18 (Translation of the original operating instructions)

Operating Instructions

Transponder-Coded Safety Switch CET.-AP-…

11. Setup

11.1. LED displays

You will nd a detailed description of the signal functions in chapter 12. System status table on page 26.

LED Color

STATE green

DIA red

LED1 red

LED2 green

NOTICE

Ì With hard-wired LEDs the following applies:

- LED1: red = Solenoid activated (voltage present at solenoid)

- LED2: green = OUT D is switched on (door is closed)

Ì Depending on version, the function of LED1 and LED2 can differ. Detailed information is available

on the enclosed data sheet or at www.euchner.com. Simply enter the order number in the search box.

11.2. Teach-in function for actuator (only for unicode evaluation)

The actuator must be allocated to the safety switch using a teach-in function before the system forms a functional unit.

During a teach-in operation, the safety outputs and the monitoring output OUT are switched off, i.e. the system is in the safe state.

Depending on the version, the teach-in operation is automatic or is undertaken with the aid of the teach-in input J.

Tip!

We recommend performing the teach-in operation prior to mounting. Mark switches and actuators that belong together in order to avoid confusion.

Important!

Ì The teach-in operation may be performed only if the device functions awlessly. The red DIA LED

must not be illuminated.

Ì The safety switch disables the code of the previous actuator if teach-in is carried out for a new

actuator. Teach-in is not possible again immediately for this actuator if a new teach-in operation is carried out. The disabled code is released again in the safety switch only after a third code has been taught in.

Ì The safety switch can be operated only with the last actuator taught in. Ì Version without teach-in input: After starting, the device remains in teach-in standby state for

3min. If no new actuator is detected in this time, the device changes to normal operation. If the switch detects the actuator that was most recently taught in when in the teach-in standby state, this state is ended immediately and the switch changes to normal operation.

Ì Versions with teach-in input: Teach-in operation ends when the power supply to the teach-in input is

interrupted, but no later than after 3min. If no actuator was detected during this time, the device enters the fault state.

Ì The actuator to be taught in is not activated if it is within the operating distance for less than 60s.

LED2 (gn)

STATE (gn) DIA (rd)

LED1 (rd)

Operating Instructions Transponder-Coded Safety Switch CET.-AP-…

(Translation of the original operating instructions) 2122242-04-05/18

11.2.1. Preparing device for the teach-in operation and teaching in actuator

1. Connect the switch as shown below, but do not apply any voltage to UB yet.

In case of version with teach-in input: For the teach-in standby state, the teach-in input J must be connected to +24VDC.

In case of version without teach-in input: The circuit is the same, but connection J is omitted.

Observe different control of guard locking for CET3 and CET4.

CET4CET3

GND

DC 24 V

0V UB

-F1 -F2

0V UCM

UCM

GND

DC 24 V

0V UB

-F1 -F2

0V UCM

UCM

Devices with teach-in input: Connect J to 24 V for teach-in

CET3-...: No voltage at UCM (guard locking active)

Devices with teach-in input: Connect J to 24 V for teach-in

CET4-...:

Voltage at UCM (guard locking active)

2. Switch on operating voltage UB.

¨ A self-test is performed for approx. 1s. After this, the green STATE LED ashes

cyclically three times and signals that it is in standby state for teach-in. Standby state for teach-in remains active for approx.3 min.

¨ If the red DIA LED is illuminated, there is a fault. Teach-in is not possible. The green

STATE LED indicates the error code. For diagnostics see section 12. System status table on page 26.

3. Activate guard locking.

CET3: no voltage at UCM. CET4: Voltage at UCM.

4. Fully insert new actuator into the recess. Do not cant it; place it in the center of the recess (see picture on right).

¨ Teach-in operation starts, green STATE LED ashes (approx. 1 Hz). The teach-in

operation is completed after approx. 60s, and the green STATE LED goes out.

5. Switch off operating voltage UB (min. 3 s).

¨ The code of the actuator that was just taught in is activated in the safety switch.

6. In case of version with teach-in input: Disconnect the teach-in input from +24 V and leave open.

7. Switch on operating voltage UB.

¨ The device operates normally.

= 90°

2122242-04-05/18 (Translation of the original operating instructions)

Operating Instructions

Transponder-Coded Safety Switch CET.-AP-…

11.3. Functional check

WARNING

Danger of fatal injury as a result of faults in installation and functional check.

Ì Before carrying out the functional check, make sure that there are no persons in the danger zone. Ì Observe the valid accident prevention regulations.

11.3.1. Mechanical function test

The actuator must slide easily into the recess on the actuating head. Close the guard several times to check the function. For devices with mechanical release (emergency unlocking or escape release), the correct function of the release must be checked as well.

11.3.2. Electrical function test

After installation and any fault, the safety function must be fully checked. Proceed as follows:

1. Switch on operating voltage.

¨ The machine must not start automatically.

¨ The safety switch carries out a self-test. The green STATE LED then ashes at regular intervals.

2. Close all guards. Guard locking by solenoid force: activate guard locking.

¨ The machine must not start automatically. It must not be possible to open the guard.

¨ The green STATE LED illuminates continuously.

3. Enable operation in the control system.

¨ It must not be possible to deactivate guard locking as long as operation is enabled.

4. Disable operation in the control system and deactivate guard locking.

¨ The guard must remain locked until there is no longer any risk of injury.

¨ It must not be possible to start the machine as long as the guard locking is deactivated.

Repeat steps 2-4 for each guard.

Operating Instructions Transponder-Coded Safety Switch CET.-AP-…

(Translation of the original operating instructions) 2122242-04-05/18

12. System status table

Operating mode

Actuator/door position

Safety outputs OA and

Monitoring output OUT

Door monitoring output

OUTD

(only CET3 and CET4)

LED indicator

Output

State

STATE (green)

DIA (red)

Normal operation

closed on on on Normal operation, door closed and locked

closed off on on

1 x in-

verse

Normal operation, door closed and locked, safety outputs not switched because:

- Feedback loop not closed (if tted)

closed off off on 1 x Normal operation, door closed and not locked

open off off off 1 x Normal operation, door open

Teach-in operation

(only unicode)

open off off off 3 x

Door open; device is ready for teach-in for a new actuator (only short time after power-up)

closed off off off 1 Hz Teach-in operation

X off off off 1

Acknowledgment after successful teach-in operation (DIA ashes once, no repetition)

Fault display

X off off X 2 x

Fault on the power supply (e.g. shutdown pulse duration for pulsed power supply too long)

X off off off 1 x

Fault in the teach-in operation (only unicode) (e.g. actuator removed from the operating distance prior to the end of the teach-in operation or disabled actuator in the operating distance)

X off off off 3 x Actuator faulty

X off off off 4 x

Output fault (e.g. short circuits, loss of switching ability)

X off off off 5 x

Internal fault (e.g. component faulty, data error or impermissible pulsing on UB)

X off off off X X Internal error

Key to symbols

LED not illuminated

LED illuminated

10Hz (10s)

LED ashes for 10s at 10Hz

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, use the reset function or 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.

2122242-04-05/18 (Translation of the original operating instructions)

Operating Instructions

Transponder-Coded Safety Switch CET.-AP-…

13. Technical data

NOTICE

If a data sheet is included with the product, the information on the data sheet applies.

13.1. Technical data for safety switch CET.-AP-C..-AH-…

Parameter Value Unit

min. typ. max.

General Material, ramp Stainless steel Material, safety switch housing Die-cast aluminum Installation position Any (recommendation: switch head downward) Degree of protection with plug connector M12

IP67 with plug connector M23 (RC18)

IP65/IP67

Safety class III Degree of contamination 3 Mechanical life 1 x 106 operating cycles Ambient temperature at U

-20 - +55 °C Actuator approach speed, max. 20 m/min Locking force F

max

6,500 N Locking force FZh in acc. with test principles GS-ET-19

FZh = F

max

/1.3 = 5,000 N

Weight Approx. 1.0 kg Degrees of freedom (actuator in recess) X, Y, Z X and Y: ± 5; Z: ± 4 mm Connection type (depending on version) 2 plug connectors M12, 5-pin, 1 plug connector M12, 8-pin,

1 plug connector M23 (RC18), 19-pin Operating voltage UB (reverse polarity protected, regulated, residual ripple < 5%)

24 ± 15% (PELV) V DC

Current consumption I

80 mA

External fuse (operating voltage UB)

0.5 - 3 A

External fuse (solenoid operating voltage UCM)

0.5 - 2 A

Rated insulation voltage U

- - 75 V

Conditional short-circuit current

100 A

Resilience to vibration

Acc. to EN 60947-5-2

EMC protection requirements

Acc. to EN IEC 60947-5-3 Ready delay - - 1 s Risk time - - 400 ms Switch-on time - - 500 ms Discrepancy time - - 10 ms Test-pulse duration - - 0.3

Safety outputs OA/OB

Semiconductor outputs (p-switching, short circuit-proof)

- Output voltage UOA/UOB

V DC

HIGH UOA/U

UB - 1.5 - U

LOW UOA/U

0 - 1 Switching current per safety output 1 - 200 mA Utilization category according to EN 60947-5-2 DC-13 24 V 200 mA

Caution: outputs must be protected with a free-wheeling diode in case of inductive loads Switching frequency 0.5 Hz Monitoring outputs OUT and OUT D (optional) (p-switching, short circuit-proof) Output voltage

0.8 x U

- U

V DC

Max. load - - 50 mA

Teach-in input J or feedback loop input Y

HIGH

15 - 26.4

LOW 0 - 1

Solenoid

Solenoid operating voltage UCM (reverse polarity protected, regulated, residual ripple < 5%)

DC 24 V +10%/-15%

Solenoid current consumption I

480 mA Power consumption Max. 12 W Duty cycle

100 %

Reliability values acc. to EN ISO 13849-1 Head downward or horizontal Head upward

Mission time 20 20 years

Monitoring of guard locking and the guard position Head downward or horizontal Head upward

Category 4 3 Performance Level (PL) e e PFH

3.1x10

-9

/h 4.29x10

-8

Activation of guard locking

EUCHNER CET.-AP Series, CET.-AR Series Operating Instructions Manual

Specifications and Main Features

Frequently Asked Questions

User Manual