Operating Instructions Non-Contact Safety Switch with Guard
Contents
1. 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 pro cessing The cable routing for safety circuits should be as far away as pos sible from the cables of the power circuits Please pay attention to any interference fields in case of devices such as frequency converters or induction heating systems Observe the EMC in structions in the manuals from the respective manufacturer If the device does not appear to function when operating voltage is applied e g green STATE LED does not flash the safety switch must be returned unopened to the manufacturer Notes for operation with safe control systems Devices with start button and feedback loop are not suitable for connection to safe control systems Please observe the following requirements for connection to safe control systems Use a common power supply for the control system and the connected safety switches A clocked power supply must not be used for UB Tap the supply voltage directly from the power supply unit If the supply voltage is connected to a terminal of a safe control system this output must provide sufficient electrical current Outputs OA and OB can be connected to the safe inputs of a control system Prerequisite The input must be suitable for clocked safety signals OSSD sig nals e g from light curtains The control system must tolerate clock pul2. Bezeichnung der Sicherheitsbauteile Type Richtlinie Normen Zertifikats Nr Description of safety components Type Directives Standards No of certificate Description des composants s curit Type Directive Normes Numero du certificat Descrizione dei componenti di sicurezza Tipo Direttiva Norma Numero del certificato Descripci n de componentes de seguridad Typo Directivas Estandares Numero del certificado Sicherheitsschalter CET1 AR LI a b c d ET 10213 1 Safety Switches CET2 AR Interrupteurs de s curit CET3 AP LI a b c d UQS 113938 2 Finecorsa di sicurezza CET3 AR LI a b c d UQS 113325 2 Interruptores de seguridad CET4 AP LI a b c d UQS 113939 __ 2 CET4 AR LI a b c d UQS 113940 2 CET3 AS LI a b c d e UQS 113400 2 CET4 AS LI a b c d e UQS 113971 2 Bet tiger CET A BWK LI a b c d ET 10213 1 Actuator UQS 113325 2 Actionneur Azionatore Actuador Benannte Stelle 1 NB 0340 Notified Body DGUV Test Pr f und Zertifizierungsstelle Fachausschuss Elektrotechnik Organisme notifi Gustav Heinemann Ufer 130 50968 K ln Germany Sede indicata 2 NB 0035 Entidad citada T V Rheinland Industrie Service GmbH Am Grauen Stein 51105 K ln Germany Leinfelden Oktober 2011 pl Ing Michael Euchner Duc Binh Nguyen Gesch ftsf hrer Dokumentationsbevollm chtigter EUCHNER GmbH Co KG Managing Director Documentation manager Kohlhammerstra e 16 G rant d affaires Responsable documenta
3. Normal operation Feedback loop not closed closed o off on E 1x O ormal operation door closed and not locked open o off off KE 1x O ormal operation door open Rb Na Door open unit is ready for teach in for a new actuator Teach in standby open 0 off off bag 3x O only short time after power up closed o off off Ka 1Hz Teach in operation Setup S x 0 off off O O Positive acknowledgment after completion of teach in operation N Fault on the power supply e g clocked power supply clocking must be EES S ZIN switched off Ne Fault in the teach in operation x 0 off off 1x 178 e g actuator removed from the operating distance prior to the end of the teach in operation or disabled actuator in the operating distance Fault display X 5 off off 4x Output error ZIN e g short circuits loss of switching ability N47 Internal fault x 5 off of a 5x aN e g component fault data error or short circuit at the outputs x 0 off ofi X X nternal fault O LED not illuminated l E LED illuminated Key to symbols E 10 Hz 8 s LED flashes for 8 seconds at 10 Hz RE IX LED flashes 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 door If the fault is still displayed afterward briefly interrupt the power supply Please contact the manufacturer if the fault could not be reset after restarting Important If you do
4. AH EUCHNER Possible combinations for CES components Actuator Safety switch CET A BWK 50X 096327 CET AP AH Key to symbols Combination possible 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 Operating Instructions Safety Switch CET AP AH EUCHNER General safety instructions Safety switches fulfill personal protection functions Incorrect installation or tamper ing can lead to fatal injuries to personnel Check the safe function of the safety guard particularly after any setup work after the replacement of a CET component after an extended period without use after every fault Independent of these checks the safe function of the safety guard should be checked at suitable intervals as part of the maintenance schedule Warning Danger of fatal injury in the event of incorrect connection or incorrect use Safety switches must not be bypassed bridging of contacts turned away removed or otherwise rendered ineffective On this topic pay attention in particular to the measures for reducing the possibility of bypassing from EN 1088 1995 A2 2008 Section 5 7 The device is only allowed to be installed and placed in operation by authorized pers
5. L a 16 5 15 16 _ 71 _ m Tip Safety screws are included with the actuator 32 Operating Instructions Safety Switch CET AP AH EUCHNER Ordering information and accessories Order No item Closed circuit current principle Versions for connection to decentralized peripheral systems 2 x M12 5 pin pin 5 not used Open circuit current Door monitoring output principle Unicode Multicode Single insertion slide Double insertion slide Teach in input Feedback loop Escape release Wire front release Lockout mechanism Wiring diagram CET3 111346 CET3 AP CRA AH 50X SI 1 11346 114223 CET3 AP CRA AH 50X SI C2333 114223 1146 26 CET3 AP CRA AH 50F SI C2357 114626 1140 73 CET3 AP CRA AH 50F SI 114073 1145 16 CET3 AP CRA AH 50F SI C2333 114516 CET4 ess ef w w w 112082 CET4 AP CRA AH 50X SI 1 12082 For connection of the device observe the specifications in the corresponding application example at www euchner de in the area Download Appl ications CET Connection cables for connection to decentralized peripheral systems Designation Comment Order no item Connection cable M12 M12 female plug 5 pin to M12 male plug length 5 m 100180 PVC 5 core plug connectors at both ends M12 female plug 5 pin to M12 male plug length 10 m 100181 fo
6. like an OSSD e g like light curtains The two 5 pin M12 plug connectors can be connected directly to the sockets of an IP65 field module e g ET200pro with the aid of the connection cables on Page 33 If flying leads are used connection to IP20 input and output modules e g ET200s is naturally also possible Observe the following notes prior to connection Use only CET AP versions that are listed in the ordering table on Page 33 The operating voltage for the CET AP must not be clocked Parameter as signment might be required for the input output modules see application example at www EUCHNER de in the area Download Applications CET Additionally observe notes from the control system manufacturer where nec essary Safety in case of faults The operating voltage U and the solenoid voltage LU are reverse polarity pro tected The contacts OA OB are short circuit proof A short circuit between OA and OB is detected by the switch gt A short circuit in the cable can be excluded by laying the cable with protection Fuse protection for power supply The power supply must be provided with fuse protection depending on the current required for the outputs The following rules apply Max current consumption lax ix lie T bur i lomos lour WW lg Switch operating current 80 mA lur Load current of monitoring outputs max 50 mA per monitoring output laog Load current of safety outputs O
7. 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 in a high resistance state 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 Important The switch must be fully connected as described in the section Electrical connection to be able to use the following functions 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 see Figures 3 4 and 5 In normal operation connect the teach in input to O V 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 The safety switch can only be operated with the last actuator taught gt If the switch detects the actuator that was most recently taught when in teach in standby state this state is ended immediately and the switch chang es to normal state In case of versions with teach in input Teach in standby state ends when the power supply to the teach in input is interrupted The actuator being taught is not activated if it is within the ope
8. 4 29x10 h Mission time 20 20 years 1 Values at a switching current of 50 mA without taking into account the cable lengths 2 Can vary depending on version See data sheet 28 Operating Instructions Safety Switch CET AP AH EUCHNER Typical system times Ready delay After switching on the unit carries out a self test for 8 s The system is ready for operation only after this time Switch on time of safety outputs The max reaction time from the moment when the safety guard is locked to the moment when the safety outputs switch on Le 400 ms Risk time according to EN 60947 5 3 If an actuator moves outside the oper ating distance the safety outputs OA and OB on the corresponding safety switch are deactivated after a maximum of 500 ms Difference time The safety outputs OA and OB switch with a slight time offset They have the same signal state at the latest after a difference time of 10 ms Clock pulses at the safety outputs The device generates its own clock signal on the output lines OA OB A downstream control system must tolerate these pulses which may have a length of up to 1 ms This can usually be set up in the control systems by parameter assignment If parameter assignment is not possible for your control system or if shorter clock pulses are required please contact our support organization 29 Operating Instructions Safety Switch CET AP AH EUCHNER Dimension drawi
9. A OB 2 x max 200 mA Only on devices with the corresponding monitoring output 19 Operating Instructions Safety Switch CET AP AH EUCHNER Caution Requirements for connection cables Risk of damage to equipment or malfunctions as a result of incorrect connec tion cables Use connection components and connection cables from EUCHNER On the usage of other connection components the requirements in the fol lowing 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 connectors 2 x M12 Parameter Value Unit Wire cross section min 0 34 mm R max 60 Q km C max 120 nF km L max 0 65 mH km Recommended cable type LIYY 8x or 5x 0 34 mm 20 Operating Instructions Safety Switch CET AP AH EUCHNER Connector assignment of safety switch CET AP with 2 x M12 plug connectors 5 pin and 8 pin wiring diagram A Designation GE Ae ne Function SE with without 2xM12 s l n c WH eg E U Operating voltage 24 V DC BN S1 3 OA Safety output channel 1 GN 1 4 OB Safety output channel 2 YE 1 5 OUT Door monitoring output GY 1 6 n c PK SL OVU Operating voltage 0 V BU 1 8 RST Reset input RD 2 1 OVU Operating voltage of guard loc
10. BWK 50X Ordering information and accessories Versions for connection to decentralized peripheral systems 2 x M12 5 pin pin 5 not used Connection cables for connection to decentralized peripheral systems Accessories Inspection and service Service Declaration of conformity 3 3 4 4 5 6 6 8 9 Operating Instructions Safety Switch CET AP AH EUCHNER Scope Correct use Important These operating instructions are valid for all CET AP AH versions These operating instructions and the enclosed data sheet form the complete user infor mation for your device The safety switch CET AP is an electromagnetic interlock device with guard locking In combination with a safety guard and the machine control this safety component prevents the safety guard from being opened while a dangerous machine move ment is being performed For the control system this means that starting commands which cause hazardous situations must become active only when the safety guard is in protective position and the guard locking is in locked position The locked position of the guard locking must be released only when the hazardous situation is no longer present Before safety components are used a risk assessment must be performed on the machine in accordance with EN ISO 13849 1 Safety of machinery Safety related parts of control systems General principles for design Annex B EN ISO 12100 Safety of machine
11. CHNER Warning Important Connecting the CET AP general Connect the device as shown in Figure 3 The monitoring output OUT and if avail able the door monitoring output OUT D can be connected 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 seconds If input RST is not used in your application it should be connected to O V In case of an error loss of the safety function through incorrect connection To ensure safety both safety outputs OA and OB must always be evaluated Single channel use of the safety outputs leads to a loss of the category in accordance with EN ISO 13849 1 The subsystem CET AP complies with PL e in accordance with EN 13849 1 To integrate the subsystem in a category 3 or 4 structure itis necessary to monitor the downstream load the feedback loop must be monitored These examples show only an excerpt that is relevant for connection of the CET system The example illustrated here does not show complete system planning The user is responsible for safe integration in the overall system DC 24V o All OS C So D elg onnected Slajals DIESAEIEIRIEEZ 3 3 37 7 gt gt 12 el leas miN SLO SAINI OM Saono vl Gi Safety ve outputs M12 plug connector M12 pl
12. Operating Instructions Non Contact Safety Switch with Guard Locking CET AP AH Unicode More than safety EUCHNER Operating Instructions Safety Switch CET AP AH EUCHNER Contents Scope Correct use Possible combinations for CES components Exclusion of liability and warranty General safety instructions Function Function of the electronics Function of the guard locking Mechanical release and mechanical key release can be retrofitted Emergency unlocking can be retrofitted Escape release optional Wire front release optional Lockout mechanism optional Changing the approach direction Mounting Electrical connection Notes for operation with safe control systems Devices for direct connection IP65 field modules Safety in case of faults Fuse protection for power supply Requirements for connection cables Connector assignment of safety switch CET AP with 2 x M12 plug connectors 5 pin and 8 pin Connector assignment of safety switch CET AP for connection to decentralized peripheral systems 2x M12 5 pin pin 5 not used Connecting the CET AP general Connecting a CET AP to a decentralized peripheral system e g ET200 series from Siemens Setup LED indicators Teach in function for actuator Functional check System status table Technical data Technical data for safety switch CET AP C AH Dimension drawing safety switch CET AP Technical data for actuator CET A
13. UCHNER Important Important Locking function not active Pushbutton Figure A Lockout mechanism optional The lockout mechanism is not a safety function The correct function must be checked at regular intervals The lockout mechanism can be used to prevent maintenance personnel from being unintentionally locked in the danger area for example In locked position the lockout mechanism prevents activation of guard locking The lockout mechanism can be secured in locking position with up to three locks The mechanical release can still be used Using the lockout mechanism Deactivate guard locking and open the safety door before using the lockout mechanism Before entering the danger area 1 Open the door 2 Press button move lockout mechanism to locking position Figures A and B and secure with lock Figure C Guard locking cannot be activated and it must not be possible to start the machine Important Test this before entering the danger area Resetting the lockout mechanism 1 Open the safety door if necessary 2 Remove the lock 3 Move lockout mechanism to basic position Figure A Locking function active Locking function active and secured Push button and align lever Figure B Figure C 13 Operating Instructions Safety Switch CET AP AH EUCHNER Using mechanical release 1 U
14. also monitored here The door monitoring output OUT D is switched on as soon as the actuator protrudes beyond the extended lift tappet state door closed guard locking not active The output OUT D also remains switched on when guard locking is active Devices for connection to decentralized peripheral systems do not feature a door monitoring output OUT D Instead the door position is indicated via LED 2 Version CET4 AP guard locking by solenoid force with door moni toring output Function as for CET2 AP but the door position is also monitored here The door monitoring output OUT D is switched on as soon as the actuator protrudes beyond the extended lift tappet state door closed guard locking not active The output OUT D also remains switched on when guard locking is active Devices for connection to decentralized peripheral systems do not feature a door monitoring output OUT D Instead the door position is indicated via LED 2 Operating Instructions Safety Switch CET AP AH EUCHNER Important Mechanical release and mechanical key release can be retrofitted The mechanical release is not a safety function The machine manufacturer must select and use a suitable release escape release emergency unlocking etc for a specific application A risk assess ment appraisal is required for this purpose It may be necessary to take specifications from a product standard into account The mechanical key r
15. cuit detection at the safety outputs by pulse signals The following switch on condition applies to safety outputs OA and OB see also System status table and the section Typical system times Safety guard closed Guard locking active actuator completely inserted into recess Feedback loop closed only for version with feedback loop start button The system consists of the following components coded actuator transponder and switch Each actuator has a unique electronic coding and is therefore a unique element The code in an actuator cannot be reprogrammed The actuator must be assigned to the safety switch by a teach in process so that itis detected by the system This unambiguous assignment ensures a particularly high level of protection against tampering The safety switch with integrated evaluation unit and read head is fastened to the fixed part of the safety guard The actuator attached to the movable part of the safety guard is moved towards the read head fitted in the safety switch by closing the door When the switch on distance is reached power is supplied to the actuator by the inductive read head and data can be transferred The bit pattern read is compared with the code saved in the safety switch If the data match the safety outputs are enabled On devices with monitoring output OUT this is also switched off Due to the combination of dynamic polling of the actuator and the redundant diverse design of th
16. e below Ensure that the actuator contacts the slide in the designated area see figure below Marks on the slide specify the prescribed approach zone The prerequisite for trouble free long term operation is protection of the switch head against penetrating foreign objects such as swarf sand and blasting shot etc The switch should be installed with the actuating head down for this purpose Cover the switch before painting work 74 5 4mm li Figure 2 Door radii and approach zone Eet 15 Operating Instructions Safety Switch CET AP AH EUCHNER A 90 Note the following points Actuator and safety switch must be easily accessible for inspection and re placement The switching operation must only be triggered by the specific actuator desig nated for this purpose Actuator and safety switch must be fitted so that 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 the active faces of the actuator and the safety switch are parallel to each other see figure on the left the actuator is fully inserted into the switch recess when the safety guard is closed see figure on the left no dirt can accumulate in the recess 16 Operating Instructions Safety Switch CET AP AH EUCHNER Electrical connection Warning In case
17. e safety electronics with the two feedback safety outputs the safety switch will enter the safe state with every detectable fault The safety outputs shut down the safety circuit if the safety guard is opened On devices with monitoring output OUT this is switched on The state of the safety outputs is monitored internally by two microprocessors In the event of a fault in the safety switch the safety circuit is switched off and the DIA LED illuminates red The safety switch has a redundant circuit design with self monitoring This means that the safety system is still effective even if a component fails Operating Instructions Safety Switch CET AP AH EUCHNER The system is designed so that failures will not result in the loss of the safety func tion The occurrence of failures is detected by cyclic self monitoring at the latest on the next demand to close the safety contacts e g on starting Operating Instructions Safety Switch CET AP AH EUCHNER Important Function of the guard locking Version CET1 AP guard locking by spring force The lift tappet is pressed into the locked position by the force of the spring for the guard locking pin in the actuator and unlocked electromagnetically by the safety switch The guard locking functions in accordance with the closed circuit current principle The locked safety guard cannot be opened immediately in the event of interruption of the power supply to the so
18. elease must not be used to lock the switch during main tenance work to prevent activation of guard locking for example The correct function must be checked at regular intervals Loss of the release function due to mounting errors or damage during mounting Check the release function every time after mounting Loss of the release function due to tension on the actuator The door must not be under tension during release Please observe the notes on any enclosed data sheets The mechanical release can be used to unlock guard locking irrespective of the state of the solenoid Using mechanical release 1 Unscrew locking screw 2 Using a screwdriver turn the mechanical release by around 180 in the di rection of the arrow The safety device can be opened The mechanical release must be returned to its original position and sealed after use for example with sealing lacquer Using mechanical key release On devices with mechanical key release can be retrofitted simply turn the key to unlock For mounting see the mechanical key release supplement On devices with monitoring output OUT this is switched off OUT D can assume an undefined state Open the safety door and close it again after resetting the mechanical release The device will then operate normally again Operating Instructions Safety Switch CET AP AH EUCHNER Detent bolt Important Important Emergency un
19. est The green LED STATE flashes for 8 s with 10 Hz The green LED STATE then flashes at regular intervals 2 Close all safety guards Guard locking by solenoid force Activate guard lock ing The machine must not start automatically It must not be possible to open the safety guard The green STATE LED illuminates continuously w Enable operation in the control system sp It must not be possible to deactivate the guard locking as long as operation is enabled 4 Disable operation in the control system and deactivate guard locking A The safety 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 safety guard 26 Operating Instructions Safety Switch CET AP AH EUCHNER System status table i LED indicator 5 z 5 2 output Ki 2 oO 3 2 5 2 wo E Ss EI 5 D Operating mode Q 5 3 5 sg E State 3 2 D 2 5 3 E 5 E E m S S SG E Ki B amp Fad hr B B 2 St zs lt m S E 2 0 S dds a a 10 Hz Self test x off off off 8s O Self test after power up I closed on on on S O ormal operation door closed and locked whe ac ormal operation door closed and locked safety outputs not switched be closed o on on 0 verse cause
20. formi alle direttive sotto riportate dove applicabili Los productos listados a continuaci n son conforme a los requisitos de las siguientes directivas si fueran aplicables I 2006 42 EG Maschinenrichtlinie 2006 42 EC Machinery directive 2006 42 CE Directive Machines j 2006 42 CE Direttiva Macchine 2006 42 CE Directiva de m quinas N 2004 108 EG EMV Richtlinie 2004 108 EC EMC Directive 2004 108 CE Directive de Compatibilit lectromagn tique 2004 108 CE Direttiva EMV 2004 108 CE Directiva CEM Die Schutzziele der Niederspannungsrichtlinie wurden gem Anhang Nr 1 5 1 der Maschinenrichtlinie eingehalten The safety objetives ofthe Low Voltage Directive comply with Annex I No 1 5 1 ofthe Machinery Directive Les objectifs de s curit de la Directive Basse Tension sont conformes a l annexe I No 1 5 1 de la Directive Machines Gli obiettivi di sicurezza della Direttiva Bassa Tensione sono conformi a quanto riportato all allegato No 1 5 1 della Direttiva Macchine Los objetivos de seguridad de la Directiva de Bajo Voltaje cumplen con el Anexo I No 1 5 1 de la Directiva de Maquinas Folgende Normen sind angewandt a EN 60947 5 3 1999 A1 2005 Following standards are used b EN 1088 1995 A2 2008 Les normes suivantes sont appliqu es ok EN ISO 13849 1 2008 Vengono applicate le seguenti norme d EN ISO 13849 2 2008 Se utilizan los siguientes est ndares e EN 50295 1999 AS i
21. itch CET AP AH EUCHNER Important Escape release optional The escape release is not a safety function The machine manufacturer must select and use a suitable release escape release emergency unlocking etc for a specific application A risk assess ment appraisal is required for this purpose It may be necessary to take specifications from a product standard into account The correct function must be checked at regular intervals Loss of the release function due to tension on the actuator The door must not be under tension during release Please observe the notes on any enclosed data sheets The escape release is used to open a locked safety guard from the inside see dimension drawing in the section Technical data Fit escape release such that operation inspection and maintenance are possible Using the escape release Press the red release knob to the stop The safety device can be opened Pull the knob out again to reset On devices with monitoring output OUT this is switched off OUT D can assume an undefined state Open the safety door and close it again after resetting the escape release The device will then operate normally again 11 Operating Instructions Safety Switch CET AP AH EUCHNER Important Important Wire front release optional The wire front release is not a safety function gt The wire front release is non latching and the
22. king solenoid 0 V BN HE dee mei LED1 LED 1 red freely configurable 24VDC ge OUT D Door monitoring output only CET3 AP and CET4 AP 2 3 LED1 LED2 LED 1 red or LED 2 green freely configurable 24 V DC BU 2 4 Um Operating voltage of guard locking solenoid 24 V DC BK Version with teach in input J To teach in a new actuator connect to 24 V DC in nor mal operation connect to O V 2 5 ye Version with feedback loop GY If the feedback loop is not used connect to 24 V DC Version without feedback loop and without teach in input This connection must be connected to O V 1 Only for standard EUCHNER connection cable 2 Can vary depending on version See data sheet Connector assignment of safety switch CET AP for connection to decentralized peripheral systems 2x M12 5 pin pin 5 not used wiring diagram B Plug connectors Wire color view of connection side Designation Als Connection cable 2xM12 11 U Operating voltage 24 V DC BN 1 2 OA Safety output channel 1 WH 1 3 OV Operating voltage 0 V BU 1 4 OB Safety output channel 2 BK S15 n c GY 2 1 n C BN S 2 2 n C WH 2 3 OV UCM OV solenoid BU S 2 4 UCM Operating voltage of guard locking solenoid 24 V DC BK 2 5 DC GY 1 Only for standard EUCHNER connection cable 2 Can vary depending on version See data sheet 21 Operating Instructions Safety Switch CET AP AH EU
23. lenoid The guard locking pin of the actuator cannot be moved out of the recess and the door is locked in the closed position as long as the lift tappet is pressed down by the actuator When the operating voltage is present at the locking solenoid the lift tappet is extended and lifts the actuator s guard locking pin above the edge of the recess The safety door can then be opened Version CET2 AP guard locking by solenoid force The safety guard can be opened immediately in the event of interruption of the solenoid power supply Usage only in special cases in accordance with strict evaluation of the accident risk see DIN EN 1088 1995 section 5 5 Example If the risk of accidental locking inside a safety guard during a power failure is higher than the risk of ineffective guard locking The lift tappet is held in locked position by electromagnetic force and released by spring force The guard locking operates in accordance with the open circuit current principle The safety door can be opened as long as the lift tappet is held in the extended position The lift tappet is released when operating voltage is present at the guard locking solenoid The actuator s guard locking pin can now press the lift tappet down The safety door is locked as soon as the guard locking pin is fully inserted into the recess Version CET3 AP guard locking by spring force with door monitor ing output Function as for CET1 AP but the door position is
24. locking can be retrofitted Emergency unlocking is not a safety function The machine manufacturer must select and use a suitable release escape release emergency unlocking etc for a specific application A risk assess ment appraisal is required for this purpose It may be necessary to take specifications from a product standard into account The correct function must be checked at regular intervals Loss of the release function due to mounting errors or damage during mounting Check the release function every time after mounting Loss of the release function due to tension on the actuator The door must not be under tension during release Please observe the notes on any enclosed data sheets Emergency unlocking can be used to unlock guard locking irrespective of the state of the solenoid For mounting see the mounting supplement Using emergency unlocking The door must not be under tension when emergency unlocking is actuated Turn emergency unlocking clockwise until it clicks into place sp The safety device can be opened To reset press the detent bolt inward using a small screwdriver or similar tool and turn the emergency unlocking back On devices with monitoring output OUT this is switched off OUT D can assume an undefined state Open the safety door and close it again after resetting emergency unlocking The device will then operate normally again 10 Operating Instructions Safety Sw
25. ng safety switch CET AP Lift tappet Version with plug connectors 2 x M12 6 5 For M6 screw DIN 1207 ISO 4762 2 pin 1 socket 30 With escape release Basic position for escape release Release by pressing With angle connectors Operating Instructions Safety Switch CET AP AH EUCHNER With mechanical key release With emergency unlocking With front wire release With lockout mechanism Operating Instructions Safety Switch CET AP AH EUCHNER Technical data for actuator CET A BWK 50X Parameter Value Unit min typ max Housing material Stainless steel Stroke max 15 mm Weight 0 25 kg Ambient temperature 20 55 RE Degree of protection acc to EN IP67 IEC 60529 Mechanical life 1 x 10 operating cycles Locking force max 6500 N Installation position Active face opposite switch head Power supply Inductive via switch Dwell time 1 0 5 S 1 The dwell time is the time that the actuator must be inside or outside the operating distance Dimension drawing actuator CET A BWK 50X Z 22 Gy 8 5 amp Se LC o w e d w 5 z WR g S Active fee ED a 2 8 aal 15
26. not find the displayed device status in the System status table this indi cates an internal device fault In this case you should contact the manufacturer 27 Operating Instructions Safety Switch CET AP AH EUCHNER Technical data Note H a product data sheet is included with the product the information on the data sheet applies in case of discrepancies with the operating instructions Technical data for safety switch CET AP C AH Parameter Value Unit min typ max General Material slide Stainless steel Material safety switch housing Die cast aluminum Installation position Any recommendation switch head downward Degree of protection IP67 screwed tight with the related mating connector Safety class Ill Degree of contamination 3 Mechanical life 1 x 10 operating cycles Ambient temperature at U 20 55 C Actuator approach speed max 20 m min Locking force Fmax 6500 N Locking force F in ace with GS T19 Fa aad 5000 N Weight approx 1 0 kg Degrees of freedom actuator in recess X Y Z Xand Y 5 Z 4 mm Connection type depending on version 2 plug connectors M12 5 and 8 pin or 2 plug connectors M12 5 pin Operating voltage U reverse polarity protected regulated DC DE SE ical i 24 15 PELV
27. nscrew locking screw 2 Operate the mechanical release through the threaded bore of the locking screw e g with a metal rod 3 mm The safety device can be opened The locking screw must be screwed back in and sealed after use for example with sealing lacquer On devices with monitoring output OUT this is switched off OUT D can assume an undefined state Open the safety door and close it again after resetting the mechanical release The device will then operate normally again 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 14 Operating Instructions Safety Switch CET AP AH EUCHNER Mounting Caution Caution Safety switches must not be bypassed bridging of contacts turned away removed or otherwise rendered ineffective On this topic pay attention in particular to the measures for reducing the pos sibility of bypassing according to EN 1088 1995 A2 2008 sec 5 7 The max achievable category according to EN 13849 1 depends on the installation position see technical data Risk of damage to equipment and malfunctions as a result of incorrect installation Safety switches must not be used as a mechanical end stop Fit an addi tional end stop for the movable part of the safety guard Observe the min door radii see figur
28. of an error loss of the safety function through incorrect connection To ensure safety both safety outputs OA and OB must always be evaluated The monitoring output OUT and the door monitoring output OUT D are not allowed to be used as safety outputs Lay the connection cables with protection to prevent the risk of short cir cuits Caution Risk of damage to equipment or malfunctions as a result of incorrect connection The power supply for the evaluation electronics is electrically isolated from the power supply for the guard locking solenoid The teach in input and feedback loop as well as LED 1 and LED 2 only ap plicable to freely controllable LEDs have the same ground potential as the guard locking solenoid The device generates its own clock signal on the output lines OA OB A downstream control system must tolerate these pulses which may have a length of up to 1 ms The pulses are also output when the safety outputs are switched off Depending on the inertia of the connected device control system relay etc this can lead to short switching processes 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 gt 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
29. onnel who are familiar with the correct handling of safety components who are familiar with the applicable EMC regulations who are familiar with the applicable regulations on health and safety and ac cident prevention who have read and understood the operating instructions Important Prior to use read the operating instructions and keep these in a safe place Ensure that the operating instructions are always available during mounting setup and servicing work 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 de Operating Instructions Safety Switch CET AP AH EUCHNER Function Lift tappet Slide Transponder Spring mounted gua ing pin Function of the electronics Safety switches series CET AP permit locking of movable safety guards They meet the following safety requirements Category 3 PLe according to EN ISO 13849 1 head mounted upward Category 4 PLe according to EN ISO 13849 1 head mounted downward or horizontal Redundant design of the circuit in the unit with self monitoring This means that the safety system still functions even if an internal component fails gt The switch state of the semiconductor outputs is continuously monitored inter nally Short cir
30. other equivalent isolation measures PELV For use and operation as per the Ji requirements a power supply with the feature for use in class 2 circuits must be used The same requirement ap plies to the safety outputs 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 For use and applications as per the requirements a connection cable listed under UL category code CYJV 7 must be used and the following re quirements met min 30 V DC 2 A 85 C The EUCHNER connection cables in the section Ordering information and accessories meet these require ments In order to avoid EMC interference the physical environmental and operating conditions at the installation site of the device must comply with the require ments according to the standard EN 60204 1 2006 section 4 4 2 EMC gt All electrical outputs must have an adequate protective circuit for inductive loads The outputs must be protected with a free wheeling diode for this pur pose RC interference suppression units must not be used 17 Operating Instructions Safety Switch CET AP AH EUCHNER Caution Important Important
31. r connection to decentralized peripheral systems M12 female plug 5 pin to M12 male plug length 20 m 100182 Accessories Designation Use Version Order No item Mechanical key release for safety switch CET identical locking incl 2 keys WE Replacement key for EE identical 2 keys identical locking Een Key Emergency unlocking for safety switch CET latching in both positions BEE CET F 098808 ere for safety switch CET acor ninge nient CET cover right and actuators CET door hinge left DT Handle for wire front release 099795 for safety switch CET Bowden Handle for wire front release Bowden Mounting plate EMP L CET for safety switch CET ne Mounting plate EMP B CET for actuator CET nn Actuator for safety switch CET incl safety screws SE Geer Safety screws spare for actuator CET en ee oo 33 Operating Instructions Safety Switch CET AP AH EUCHNER Inspection and service Warning Loss of the safety function because of damage to the system In case of damage the entire device must be replaced Only accessories or spare parts that can be ordered from EUCHNER may be replaced Regular inspection of the following is necessary to ensure trouble free long term operation Check the switching function see section Functional check Check all additional functions e g escape release lockout mechanism etc Check the secure fastening of the devices and the connections Check for
32. rating dis tance for less than 60 s 24 Operating Instructions Safety Switch CET AP AH EUCHNER Preparing device for teach in operation 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 input J must be reconnected from O V to 24 V DC Important In normal operation reconnect the teach in input to O V In case of version without teach in input The circuit is the same but con nection J is omitted Observe different control of guard locking for CET1 3 and CET2 4 CET1 and CET3 CET1 3 No voltage at UCM guard locking active CET2 and CET4 CET2 4 A Voltage at UCM guard locking active DC 24 V D ki Devices with teach in input Connect J to 24 V for teachin TU DC 24V Devices with teach in input Connect J to 24 V for teach in OV UB Actuator teach in 1 Switch on operating voltage UB The green LED flashes quickly approx 10 Hz A self test is performed during this time approx 8 s After this the green LED flashes cyclically three times and signals that it is in standby state for teach in Standby state for teach in remains active for approx 3 minutes If the red LED is illuminated there is a fault Teach in is not possible The green LED indicates the fault code Diagnostic
33. refore must not be used as an escape release unless the machine manufacturer itself provides a detent mechanism The machine manufacturer must select and use a suitable re lease escape release emergency unlocking etc for a specific application A risk assessment appraisal is required for this purpose It may be neces sary to take specifications from a product standard into account Loss of the release function due to tension on the actuator The door must not be under tension during release The correct function must be checked at regular intervals The wire front release permits remote release of the guard locking via a pull rope Flexible routing of the pull rope permits release of the guard locking in inaccessible installation situations On devices with monitoring output OUT this is switched off OUT D can assume an undefined state Open the safety door and close it again after resetting the wire front release The device will then operate normally again Mounting the wire front release Loss of the release function due to mounting errors damage or wear Check the release function every time after mounting When routing the wire front release ensure that it operates smoothly Observe the min bending radius 100 mm and minimize the number of bends The switch is not allowed to be opened Observe the notes on the enclosed data sheets 12 Operating Instructions Safety Switch CET AP AH E
34. ry General principles for design Risk as sessment and risk reduction IEC 62061 Safety of machinery Functional safety of safety related electrical electronic and programmable electronic control systems Correct use includes compliance with the relevant requirements for installation and operation in particular EN ISO 13849 1 Safety of machinery Safety related parts of control systems General principles for design EN 1088 Safety of machinery Interlocking devices associated with guards Principles for design and selection EN 60204 1 Electrical equipment of machines The safety switch is only allowed to be operated in conjunction with the intended EUCHNER CET actuators and the related connection components from EUCHNER On the use of different actuators or other connection components EUCHNER provides no warranty for safe function The user is responsible for the integration of the device into a safe overall system For this purpose the overall system must be validated e g in ac cordance with EN ISO 13849 2 Correct use requires observing the permissible operating parameters see Technical data gt If a product data sheet is included with the product the information on the data sheet applies in case of discrepancies with the operating instructions It is only allowed to use components that are permissible in accordance with the table below Operating Instructions Safety Switch CET AP
35. s see section System status table on page 27 2 Activate guard locking CET1 3 no voltage at UCM CET2 4 Voltage at UCM 3 Fully insert new actuator into the recess Do not cant it place it in the center of the recess see picture on left sp Teach in operation starts green LED flashes approx 1 Hz The teach in opera tion is completed after approx 60 seconds and all LEDs go out 4 Switch off operating voltage UB min 3 seconds The code of the actuator that was just taught in is activated in the safety switch 5 In case of version with teach in input Connect teach in input to O V 6 5 6 Switch on operating voltage UB 5 0 The device operates normally 25 Operating Instructions Safety Switch CET AP AH EUCHNER Warning Functional check Danger of fatal injury as a result of faults in installation and functional check Before carrying out the functional check make sure that there are no per sons in the danger area Observe the valid accident prevention regulations Mechanical function test The actuator must slide easily into the recess on the actuating head Close the safety guard several times to check the function 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 t
36. ses 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 pulse duration of your safety switch please refer to the section Typical system times on page 29 The following applies for single channel control of the guard locking The guard locking OV UCM and the control system must have the same weight For two channel control of the solenoid voltage by safe outputs of a control system the following points must be observed see also Figure 14 If possible switch off the pulsing of the outputs in the control system For devices with teach in input J the input must remain unswitched in normal operation Freely controllable LEDs may only be switched in parallel to the solenoid i e the LED indicates whether the solenoid is energized A detailed example of connecting and setting the parameters of the control system is available for many devices at www euchner de in the download area Applications CET The features of the respective device are dealt with there in greater detail 18 Operating Instructions Safety Switch CET AP AH EUCHNER Important Devices for direct connection IP65 field modules The version CET AP Sl connection plan B is optimized for connection to decentralized peripheral systems such as the ET200pro series from Siemens The devices are assigned parameters and connected
37. soiling No servicing is required repairs to the device are only allowed to be made by the manufacturer Note The year of manufacture can be seen in the lower right corner of the rating plate The current version number in the format V X X X can also be found on the device 34 Operating Instructions Safety Switch CET AP AH EUCHNER Service If service support is required please contact EUCHNER GmbH Co KG Kohlhammerstra e 16 D 70771 Leinfelden Echterdingen Service telephone 49 711 7597 500 E mail info euchner de Internet www euchner de 35 Operating Instructions Safety Switch CET AP AH EUCHNER Declaration of conformity EUCHNER More than safety ce EUCHNER EUCHNER GmbH Co KG EG Konformit tserkl rung Original DE Kohlhammerstra e 16 EC Declaration of Conformity Translation EN 70771 Leinfelden Echterdingen CE D claration de Conformit Traduction FR Germany CE Dichiarazione di conformita Traduzione IT CE Declaraci n de Conformidad Traducci n ES Die nachfolgend aufgef hrten Produkte sind konform mit den Anforderungen der folgenden Richtlinien falls zutreffend The beneath listed products are in conformity with the requirements of the following directives if applicable Les produits mentionn s ci dessous sont conformes aux exigences impos es par les directives suivantes si valable I prodotti sotto elencati sono con
38. tion 70771 Leinfelden Echterdingen Direttore Generale Responsabilita della documentazione Germany Director Gerente Agente documenta 110802 04 24 10 2011 NG TPS Blatt Sheet Page Pagina Pagina 1 EUCHNER GmbH Co KG Kohlhammerstra e 16 70771 Leinfelden Echterdingen Tel 49 711 7597 0 Fax 49 711 753316 www euchner de info euchner de 36 Operating Instructions Safety Switch CET AP AH EUCHNER 37 More than safety Euchner GmbH Co KG KohlhammerstraBe 16 D 70771 Leinfelden Echterdingen info euchner de www euchner de Edition 113858 03 03 13 Title Operating Instructions Manual Safety Switch CET AP AH translation of the original operating instructions Copyright EUCHNER GmbH Co KG 03 2013 Subject to technical modifications no responsibility is ac cepted for the accuracy of this information Third party trademark information SIMATIC ET 200pro is a trademark of SIEMENS AG EUCHNER
39. ug connector 5 pin 8 pin CET AP o GND Figure 3 Connection example for version with teach in input and 2 x M12 plug connectors 22 Operating Instructions Safety Switch CET AP AH EUCHNER Connecting a CET AP to a decentralized peripheral system e g ET200 series from Siemens Please observe the notes in section Devices for direct connection IP65 field modules on page 19 before connecting the device PLC decentralized periphery e g ET 200pro gt 2 di dl dl gt SO O el el el 2 UCM n c ao q 4 5 ol il mol t wo ol eil m X1 M12 plug connector X2 M12 plug connector 5 pin 5 pin CET3 AP Sk CET4 AP SH Figure 4 Connection example for version for connection to decentralized periph eral systems here ET200pro 23 Operating Instructions Safety Switch CET AP AH EUCHNER LED indicators LED Color State Significance illumi NI nated x Normal operation STATE green it Teach in operation or Power Up flashing a for further signal function see status table illumi AU Internal electronics fault DIA red nated x Fault at the inputs outputs LED 1 red Solenoid status LED 2 green Door position status Can vary depending on version See data sheet Teach in function for actuator The actuator must be allocated to
40. xpe Current consumption 80 mA For the approval according to UL the following applies Operation only with UL class 2 power supply or equivalent measures Switching load according to UL DC 24 V class 2 External fuse operating voltage U 0 5 3 A External fuse solenoid operating voltage Up 0 5 S 2 A Resilience to vibration In acc with EN 60947 5 2 EMC protection requirements In acc with EN IEC 60947 5 3 Safety outputs OA OB Semiconductor outputs p switching short circuit proof Output voltage UA HIGH UU U 1 5 U VDC LOW UA 1 Switching current per safety output 1 200 mA Utilization category according to EN 60947 5 2 DC 13 24V 200mA Caution outputs must be protected with a free wheeling diode in case of inductive loads Switching frequency 0 5 Hz Repeat accuracy R acc to EN IEC 60947 5 3 lt 10 Monitoring outputs OUT and OUT D optional p switching short circuit proof Output voltage 0 8 x U Us VDC Max load 50 mA Teach in input J or input feedback loop Y HIGH 15 Un v LOW 0 1 Solenoid Solenoid operating voltage Ucy reverse polarity protected DC 24 V 10 15 regulated residual ripple lt 5 Current consumption solenoid lem 480 mA Power consumption Max 12 W Duty cycle 100 Freely configurable LEDs 2 LED 1 red LED 2 green Operating voltage 20 4 26 4 V DC Reliability values according to EN ISO 13849 1 Head downward or horizontal Head upward Category 4 3 Performance Level PL e e PFH 3 1x10 h
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