Operating instructions
Contents
1. 13 DIMENSIONS i ree o oe o E ort ae nes aed ese E R tes 14 4 1 4 1 1 4 2 4 2 1 4 3 5 5 1 5 2 5 3 5 4 5 5 6 6 1 6 2 6 3 7 7 1 7 2 8 8 1 8 2 SLC 425l Electrical connection Wiring example Muting o oo auaa 15 Connector configuration Receiver Transmitter amp Cable Muting Mode 15 Wiring example Cyclic operation sonaa aaaea 16 Connector configuration Receiver Emitter amp Cable Cyclic operation 200000005 16 Sensor connection field 0 0 0 cece eee 17 Set up and maintenance Check before start up 2 0 0 eee 17 Maintenance isc rrin aa aama ease earner eased aunts 17 Regular check 2 2 0 2 2 0 440 bahar tekei niar ee eee 17 Half yearly inspection 0 000 cee 17 Cleaning oc isc ones oy eek once th ee ees ee ede eee 17 Diagnostic LED status information 0 00000 000 cece 18 Fault diagn sis sa arera caged de eA eee aa 19 Extended diagnostic 0 0 000 es 19 Disassembly and disposal DiSaSSemMbly sec 1 gee ge wb sie ear dar iota Lea ed 19 Disposal ecs di drene coe a seh eee te ba ee ee he 19 Appendix ee cle ee ee EE E ee ener ee eer 19 EC Declaration of conformity 2020 2c eee 20 1 About this document 1 1 Function This operating instructions manual provides all the information you need for the mounting set up and commissioning to ensure the safe operation and disassembly of the safety switch2. Description of the safety component Safety light curtain Harmonised EC Directives 2006 42 EC EC Machinery Directive 2004 108 EC EMC Directive EN 61496 1 2004 A1 2008 CLC TS 61496 2 2006 EN ISO 13849 1 2008 PL e EN 62061 2005 SIL 3 Applied standards SLC 425l B EN i Safety Control GmbH Am Industriepark 33 D 84453 M hldorf Inn Person authorized for the compilation of the technical documentation Notified body for the prototype test EC prototype test certificate Place and date of issue Gi Ka Authorised signature Christian Spranger Managing Director Ulrich Loss M ddinghofe 30 42279 Wuppertal T V Nord Cert GmbH Langemarckstr 20 45141 Essen ID n 0044 n 44 205 10 555867 005 Wuppertal February 1 2010 L by Authorised signature Klaus Schuster Managing Director The currently valid declaration of conformity can be down loaded from the internet at www schmersal net Telefon 49 0 86 31 187 960 Telefax 49 0 86 31 187 961 E Mail info safetycontrol com 20 CE SCHMERSAL safety control
3. Wiring error for function selection restart interlock auto Check connection at the receiver bridge 1 or bridge 2 start continuous flashing matic mode must be wired refer to Wiring 1 flashes Error at sensor receiver Replace receiver 2 flashes Error contactor control OFF Check connections at contactor control input refer to Wiring Check wiring of the auxiliary contacts 3 flashes Error contactor control ON Check connections at contactor control input Check short circuit at UB and mass Power reset after fault rectification 4 flashes Errors at the OSSD outputs Check the wiring of the outputs OSSD for short circuit at UB and mass 5 flashes Error configuration data Check the configuration settings by means of the NSR 0801 BUS converter 6 flashes Error blanking The receiver has detected blanked beams as beams without interruption i e locking Check the configuration settings by means of the NSR 0801 BUS converter repeat the teach process with blanking 6 3 Extended diagnostic By means of the optional configuration software and the NSR 0801 BUS converter an extended diagnostic can be executed The software provides the status information of the component and can represent the individual light lines This feature enables an optimal adjustment of the light curtain The diagnostic mode is signalled by the OSSD ON and OSSD OFF LED s at the receiver In diagnostic mode protective mode is disabled the ODDS outputs being locke
4. 0 VDC BU 24 VDC BN 0 VDC BU OSSD 1 GN OSSD 2 YE ah Earth connection Legend Cable Connector Bridge 1 Restart interlock manual reset active female M12 8 pole The cable bridge between Pin 5 and 6 must always 5 be wired 4 6 K1 K2 Relay for processing the switching outputs OSSD Q fe 1 0SSD 2 3 O o Kn1 Kn2 Auxiliary contacts of the last switching relay optional 0 0 Signals at the EDM input Pin 8 only to be disconnec 2 1 ted when the function is activated 8 S1 Command device for restart TRANSMITTER E1 Power supply 24 VDC 10 SLC Connector Signal male M12 4 pol Designation Description Upon delivery the contactor control function is deactivated 1 BN 24VDC Power supply The function is activated by means of the NSRO801 BUS 4 3 2 WH DiagnosticIN Input diagnostic data converter and the PC software 3 BU 0VDC Power supply 4 BK Diagnostic OUT Output diagnostic data O o 7 4 2 1 Connector configuration Receiver Emitter amp Cable Cyclic operation 1 2 RECEIVER SLC Connector Signal Cable Connector male M12 8 pol Designation Description female M12 4 pole WH Start button Input BN 24VDC Power supply 3 4 GN OSSD 1 Safety output 1 Oo o YE OSSD2 Safety output 2 GY Diagnostic IN Input diagnostic data O oO PK Diagnostic OUT Output diagnostic data 2 BU OVDC Power supply RD Contactor control Input EDM ANOoaRWND The colour codes are onl
5. 32 4 3 1210 120 25 32 4 6 1290 128 25 32 4 7 1370 136 25 32 5 1 1450 144 25 32 5 3 170 8 15 20 1 0 250 12 15 20 1 3 330 16 15 20 1 6 410 20 15 20 1 9 490 24 15 20 2 1 570 28 15 20 2 4 650 32 15 20 2 6 730 36 15 20 2 9 810 40 15 20 3 2 890 44 15 20 3 5 970 48 15 20 3 7 1050 52 25 32 4 0 1130 56 25 32 4 3 1210 60 25 32 4 6 1290 64 25 32 4 8 1370 68 25 32 5 1 1450 72 25 32 5 3 1530 76 25 32 5 6 1610 80 25 32 5 9 1690 84 25 32 6 2 1770 88 25 32 6 4 Operating instructions Safety light curtain 2 7 Safety classification EN ISO 13849 EN 62061 up toe up to 4 7 42 x10 h up to 3 20 years 2 8 Functions The system consists of a receiver and a transmitter For the described functions no further switching elements are required For the diag nostics and function selection a user friendly PC software is offered as accessory For the connection to a PC the NSR 0801 BUS converter is required not included in delivery The system for the version SLC 425 has the following features e Start interlock e Restart interlock manual reset e Contactor control EDM Beam coding Blanking of fixed protection field areas Blanking of movable protection field areas e Muting Cyclic operation 2 8 1 Factory setting The SLC 425l system features many functions without additional devices The following table gives an overview of the possible functions and the factory settings configuration Restart interlock not active Ex
6. distance If the new value S lt 500 mm use a minimum distance of 500 mm Example Reaction time of the safety light curtain 10 ms Resolution of the safety light curtain 14 mm Stopping time of the machine 330 ms S 2000 mm s 330 ms 10 ms 8 14 mm 14 mm S 680 mm S gt 500 mm therefore new calculation with V 1600 mm s S 544 mm The safety distance for resolutions 41 mm up to 70 mm is calcula ted by means of the following formula 3 S 1600 mm s T 850 mm S Safety distance mm T Stopping time of the machine reaction time of the safety light curtain K Approach speed 1600 mm s C Safety supplement 850 mm If the effective resolution is more than 70 mm the detection of bodily parts is no longer guaranteed to that end the risks such as reaching into climbing through and reference heights above the ground must be observed refer to DIN EN ISO 13855 The formula 3 is also applicable to the calculation of the safety distance for the effective resolution from 41 mm to 300 mm The safety distance between the safety light curtain and the hazardous point must always be respected and observed If a person reaches the hazardous point before the hazar dous movement has come to standstill he she is exposed to serious injuries SCHMERSAL Operating instructions Safety light curtain SLC 425l Safety distance to the hazardous area Safety distance S _ __ Limit of the
7. located between the protection field markings of transmitter and receiver Addi tional protective devices must ensure that the operator has to pass by the protection field to reach the hazardous machine parts The SLC 425I must be installed so that the personnel is always located within the detection zone of the safety device when operating the hazar dous machine parts to be secured CEN 11 Operating instructions Safety light curtain Correct installation Hazardous machine parts can only be reached after passing through the protection field The presence of staff members between the protection field and hazardous machine parts must be prevented avoided protection against stepping over r le l Unauthorised installation Hazardous machine parts can be reached wit h hout passing through the protection field DE iJ mad The presence of staff members between the protection field and hazardous machine parts is enabled 3 3 Alignment Procedure 1 The transmitter and the receiver must be fitted parallel to each other and at the same height 2 Turn the transmitter and monitor the diagnostic window of the recei ver Fix the light curtain when the LED OSSD ON green is on and the LED signal reception orange is off 3 Determine the max rotating angle to the left and to the right at which the LED OSSD ON green is on an
8. ms This corresponds to a minimum distance of 100 mm at a belt speed of 2 0 m s The minimum signal length of the outer sensors must be over 50 ms The signal propagation delay between the muting sensors may be 3 seconds at the most depending on the chosen setting The mounting distance of the inner sensors to the protection field of the SLC 425I must be chosen as small as possible The sensors transmitter receiver of the SLC 425I must be fixed as close as possible to the conveyed material to avoid the creation of gaps Otherwise there is a risk that persons can slip between the material and the MS arrangement into the hazardous area during the muting cycle In case of different material widths the gap between the sensors trans mitter receiver of the SLC 4251 and the material must be protected with an additional cover Muting with 2 sensors parallel arrangement The arrangement shows the muting application with two parallel arranged muting sensors This arrangement enables the material to be transported in only one direction out of the hazardous area Additional safety guard Hazardous area i Carrier k MS2 MS1 I S3 I S1 distance MS 1 to SF S2 distance MS 1 to MS 2 S3 material length MS 1 muting sensor 1 MS 2 muting sensor 2 S transmitter E receiver VB belt speed m s SF protection field S3 gt S1 S2 S1 belt speed VB m s 0 05 s MS2 MS1 SF end Belt stop ove
9. outputs This function is only authorised for the above described application For other applications no warranty claims shall be accepted This document includes information for the adequate and proper by passing of the protection field of an ESD and is reserved to persons who have the necessary expertise and technical know how The users of this document must be able to adequately and correctly evaluate the risks involved in this operating mode This document does not provide all technical know how which is required in conjunction with this operating mode To this effect the harmonised governmental and legal provisi ons regarding the technical know how must be obeserved SLC 425l Muting specific intended brief by passing of the outputs of an ESD in case of automatic material transport Muting sensor sensor for the uniform recognition of material Muting lamp the muting lamp signals the muting state Override the function enables the material transport after an exceptional stop of the muting cycle Belt stop the muting running time is stopped as long as the belt stop signal is active 2 9 1 Muting sensors MS The MS muting sensor can be a mechanical capacitive inductive or optoelectronic sensor They have no particular requirements as fail safety is regarded The set up must be executed tamper proof When reflexion light barriers are used the sensors and reflectors must be arranged alternately to avoid mutual interfe
10. parts 5 The safety distance of the application exceed the mathematically calculated one Operate the machine and check whether the hazardous movement stops under the hereafter mentioned circumstances 6 Hazardous machine parts do not move when the protection field is interrupted 7 The hazardous machine movement is immediately stopped when the protection field is interrupted with the test rod immediately before the transmitter immediately before the receiver and in the middle between the transmitter and the receiver 8 No hazardous machine movement when the test rod is within the protection field 9 The hazardous machine movement comes to standstill when the voltage supply of the SLC 4251 is switched off 5 4 Half yearly inspection The following items must be checked every six months or when a ma chine setting is changed 1 Machine stops or does not inhibit any safety function 2 No machine modification or connection change which affects the safety system has taken place 3 The outputs of the SLC 425 are correctly connected to the machine 4 The total response time of the machine does not exceed the respon se time calculated during the first putting into operation 5 The cables the connectors the caps and the mounting angles of the SLC 425l are in perfect condition 5 5 Cleaning If the optics cover of the sensors is extremely soiled the OSSD outputs of the SLC 4251 can be disabled Clean with a soft cloth w
11. pe ea ey Fig Ree eae a ag ae Tas Legend Bridge 1 Restart interlock active bridge between DIAG OUT and DIAG IN The cable bridge between Pin 5 and 6 must always be wired K1 K2 Relay for processing the switching outputs OSSD 1 0SSD 2 MK Machine contact belt stop optional S1 Command device button for enabling restart override E1 Power supply 24 VDC 10 4 1 1 Connector configuration Receiver Transmitter amp Cable Muting Mode RECEIVER Signal SLC connector Designation male M12 8 pole 5 6 4 TED 18 2 WH Release Override BN 24 VDC GN OSSD 1 YE OSSD 2 GY Diagnostic IN PK Diagnostic OUT BU 0VDC RD Belt stop ANOaAARWDHND S SCHMERSAL y contro Description Input Power supply Safety output 1 Safety output 2 Input diagnostic data Output diagnostic data Power supply Input SLC connector male M12 4 pole 4 3 N Cable Connector female M12 4 pole Signal Designation 24 VDC Diagnostic IN 0 VDC with 4 muting sensors Description Power supply Input diagnostic data Power supply Diagnostic OUT Output diagnostic data AN The colour codes are only valid for the cable types mentioned below optional accessories 15 Operating instructions Safety light curtain SLC 425l 4 2 Wiring example Cyclic operation Release restart gt interlock WH Contactor control DIAG OUT PK EDM RD DIAG IN WH DIAG OUT BK 24 VDC BN
12. to pre vent a person from reaching a hazard through the blanking areas of a protection field Operating instructions Safety light curtain 2 8 7 Testing The system performs a complete self test and safety test within 2 seconds after the operating voltage has been switched on If the protec tion field is not interrupted the system switches to the ON condition In case of an error the outputs at the receiver do not switch to the ON state The LED OSSD OFF starts flashing thus emitting an error mes sage Further indications can be found in the chapter Fault diagnostic During operation the system continuously executes a self test Safety relevant faults are detected within the cycle time and cause the outputs to be switched off 2 9 Operating mode muting Adequate and appropriate application The objective of the by pass function is the safe distinction between material and the presence of a person in front of the hazardous area To this effect 2 or 4 additional sensors must be connected to provide for a safe distinction between persons and the material to be transported To activate and parameterise the muting function the NSR 0801 BUS converter and the SLC4 PC software is required Special safety instructions for muting All components must only be connected wired and fitted by a specia list who has sufficient electrical professional training and knowledge of the harmonised safety regulations Testing and start up by a qu
13. 0 19 0 00 00 03 0 Muting cycle time Simuttaneousness sensors Special functions Restart interlock d protection field Muting multiple interruption of protective field 7 allowed 00 05 00 0 protection field area complete protection field Teach sample List no RS485 BUS 1 S conveyor stop r shortened muting cycle l Override F 00 00 06 0 Save settings Default values Operating mode and transport direction First choose the operating mode and the transport direction set up and number of the muting sensors Muting with 2 sensors diagonal arrangement Muting variant with 2 crosswise arranged muting sensors transport di rection material transport in both directions factory setting selectable options belt stop reduced muting cycle override protection field area Muting with 2 sensors parallel arrangement Muting variant with 2 muting sensors transport direction outward travel ling leaving the hazardous area reduced muting cycle factory setting selectable options belt stop override protection field area The use of 2 parallel arranged sensors is only authorised for outward material transport i e the transport of material out of the hazardous area The muting sensors must be installed inside the hazardous area Muting with 4 sensors parallel arrangement Muting with each time 2 symmetrically arranged sensors before and after the protection field of th
14. 5V 3 10 mA 0 2 MA Input restart interlock manual reset 17 29 V 0 25V 3 10 mA 0 3mA Start and restart interlock manual reset contactor control fixed and floating beam blanking muting cyclic operation 1 to 8 cycles Muting lamp output 24 VDC 500 mA Signal times 50 500 ms einstellbar 50 ms 1 0 s signal trans mission in case of trailing edge 250 1500 ms adjustable Transmitting status OSSD ON OSSD OFF restart signal reception blanking multifunction M12 Connector plug with metal thread receiver 8 pole transmitter 4 pole male Muting sensors 2 pc M8 3 pole Muting lamp M8 3 pole 10 C 50 C 25 C 70 C Diagnostics and function setting IP67 IEC 60529 10 55 Hz to IEC 60068 2 6 10 g 16 ms to IEC 60068 2 29 as of 2010 version 1 0 1 To IEC 61131 2 2 In case of failure the leakage current at the most flows to the OSSD cable The downstream control element must recognise this state as LOW A safety PLC must detect this state SCHMERSAL SLC 425l 2 6 Response time reaction time The response time of the safety light curtain SLC 425 depends on the hight of the protected field the resolution the number of light beams and the beam coding 170 16 15 20 1 0 250 24 15 20 1 3 330 32 15 20 1 6 410 40 15 20 1 9 490 48 15 20 2 1 570 56 25 32 2 4 650 64 25 32 2 6 730 72 25 32 2 9 810 80 25 32 3 2 890 88 25 32 3 5 970 96 25 32 3 7 1050 104 25 32 4 0 1130 112 25
15. I gt gt l Fixed blanking area E1 RI The range of the fixed blanking can be arbitrarily chosen in the protec tion field The first beam line which realises the optical synchronisation and is located immediately behind the diagnostic window cannot be blanked The area of the fixed blanking must not be modified after the teach in process Any change of the area or removal of the part from the pro tection field will be detected by the system As a result the outputs are disabled locked This locking can be neutralised by executing a new teach in process in accordance with the actual beam interruptions e The remaining lateral areas must be protected against intru sion by means of mechanical covers The lateral covers must be fixed with the object Partial covers are not authorised After the fixed blanking the protection field must be tested by means of the test rod e The restart interlock function of the safety light curtain or the machine must be activated The standard IEC TS 62046 includes information which describes possibly required additional measures to prevent a person from reaching a hazard through the blanking areas of a protection field The function is activated by means of the NSR 0801 BUS converter and a PC or laptop The activation of the function is signaled by the LED blanking flashing in the diagnostic window of the
16. LC 425I E R1130 XX RFBC 1130 1248 1312 1284 1348 SLC 425I E R1210 XX RFBC 1210 1328 1392 1364 1428 SLC 425I E R1290 XX RFBC 1290 1408 1472 1444 1508 SLC 425I E R1370 XX RFBC 1370 1488 1552 1524 1588 SLC 425I E R1450 XX RFBC 1450 1568 1632 1604 1668 a Hee if fal SLC 425I E R1530 XX RFBC 1530 1648 1712 1684 1748 of a SLC 425I E R1610 XX RFBC 1610 1728 1792 1764 1828 SLC 425I E R1690 XX RFBC 1690 1808 1872 1844 1908 SLC 425I E R1770 XX RFBC 1770 1888 1952 1924 1988 Mounting kit MS 1030 The mounting kit consists of 4 steel angles and 16 fixing screws S 1 wt E Tt SS 1 Legend A Protection field height B Mounting dimension C Total length Centre fixing MS 1051 optional accessory Mounting kit consists of 2 steel angles 4 screws and 4 T slot nuts for central fixing 42 14 CEN S SCHMERSAL Operating instructions Safety light curtain 4 Electrical connection 4 1 Wiring example Muting DIAG OUT BK 24 VDC BN DIAG OUT PK Bridge 1 Belt stop RD 24 VDC BN Release Override WH 0 VDC BU OSSD 1 GN OSSD 2 YE SLC 425l T 24VDC 1 24VDC lisi Jigs Sensor connec tion with 2 muting sensors Cable Connector female M12 8 pole TRANSMITTER KY 2 1 B O 0 pas ve A i D S f gt i 6 e e i mm El e i Earth connection EE ges Fe gga Ik Nee ay et ep
17. X 000 v A 03 2011 BZ Nr 53501 4V900 Teile Nr 1214166 EN Ausgabe C Operating instructions Safety light curtain SCHMERSAL CEN Operating instructions pages 1 to 20 Translation of the original operating instructions Encontrara el manual de instrucciones actual en su idioma oficial de la UE en nuestra pagina de Internet www schmersal net Cat Il manuale d istruzioni aggior nato nella vostra lingua lingua ufficiale UE scaricabile in Internet all indirizzo www schmersal net Vous trouverez la version actuelle du mode d emploi dans votre langue nationale officielle sur l Internet www schmersal net U vindt de huidige versie van de gebruikshandleiding in uw offici le landstaal op het Inter net www schmersal net EU CBA Nie ROHR BBE RR www schmersal net 45 47 YO KtERT 1 1 1 1 2 1 3 1 4 1 5 1 6 1 7 2 2 1 2 2 2 3 2 3 1 2 4 2 5 2 6 2 7 2 8 2 8 1 2 8 2 2 8 3 2 8 4 2 8 5 2 8 6 2 8 7 2 9 2 9 1 2 9 2 2 9 3 2 9 4 2 9 5 2 9 6 2 10 3 3 1 3 2 3 3 3 4 3 4 1 3 5 S SCHMERSAL About this document FUNCHON s caai nepa te e E deen pee a Ree 1 Target group authorised qualified personnel 1 Explanation of the symbols used 00002020 eee 1 Appropriate use 0 eee 1 General safety instructions 000000 cece eee 2 Warning about misuse 0000 cee eee 2 Exclusion of liability 0 0 0 0 2 Product
18. afety switchgear personal hazards or damages to machi nery or plant components cannot be excluded The relevant requirements of the standards EN ISO 13855 successor of EN 999 amp EN ISO 13857 must be observed 1 7 Exclusion of liability We shall accept no liability for damages and malfunctions resulting from defective mounting or failure to comply with this operating instructions manual The manufacturer shall accept no liability for damages resul ting from the use of unauthorised spare parts or accessories For safety reasons invasive work on the device as well as arbitrary re pairs conversions and modifications to the device are strictly forbidden the manufacturer shall accept no liability for damages resulting from such invasive work arbitrary repairs conversions and or modifications to the device 2 Product description 2 1 Ordering code This operating instructions manual applies to the following types SLC 4251 E RO RFBC No Option Description XXXX Protection field heights in mm available lengths 0170 0250 0330 0410 0490 0570 0650 0730 0810 0890 0970 1050 1130 1210 1290 1370 1450 1530 1610 1690 1770 14 30 Resolution 14 mm 30 mm Note only for resolution 30 mm SLC 425l Only if the information described in this operating instructions manual are realised correctly the safety function and therefo re the compliance with the Machinery Directive is maintained 2 2 Special v
19. alified person who has professional know ledge as well as in particular knowledge of the harmonised legal and governmental regulations Instruction and training of the operators by an expert on the application After connection and fitting by an expert the following instructions must be respected and observed Set up of the sensors to the operating instructions SLC 4251 The mu ting function must not be started by a person unintentionally accessing the hazardous area The sensors must be set up so that a normal approach by a body part e g foot leg arm hand movement does not activate the muting mode e The selection of the operating parameters e g simultaneity muting time operating mode special functions etc must be adjusted to the application e The muting cycle must be started automatically after the command de vice is enabled and be controlled by at least two independent signals sensors The command device for the enabling and override function must be set up so that the operator has a clear view on the entire hazardous area The mounting position must be selected so that the device can not be actuated at the hazardous point e The muting state can be signalled through a muting lamp The muting function must only be used for automatic material transport to protect the accesses to the hazardous area In this way the material passes through the accesses and the protection field of the SLC 4251 without disabling the
20. ayed You are simultaneously asked to save the configuration data in the form of a text file were succi tr The data essfully transmitted Would you like to store the data in a text file pa This saving procedure is recommended so that configuration changes can be reproduced at a later moment Click the yes button with your mouse to confirm You now can save the configuration setting onto your PC or laptop 2 9 6 Muting applications Arrangement of the muting sensors Muting lamp a JV Ly MS2 LI MS3 B om Py ve ae p ir 2 fo hd coy MSI r ga At dy we 7 giie p E if al V Belt Reflector Muting sensor SLC 425 E R Carrier MS1 MS2 O MS3 MS amp Oo 7 Material S1 distance of the inner MS to SF S2 distance between two MS S3 material length MS 1 muting sensor 1 MS 2 muting sensor 2 MS 3 muting sensor 3 MS 4 muting sensor 4 BWS ESD electro sensitive safety device S transmitter E receiver VB belt speed m s SCHMERSAL SLC 425l Minimum distances muting sensors For the evaluation of the signals MS in the control system a minimum distance is required for the muting sensors The minimum signal length between the sensors which are fitted closest to the SLC 4251 must be at least 50
21. beam coding A which are des tined to this particular receiver from foreign beams The beam coding A must be set for each sensor receiver and transmitter individually The function is activated by means of the NSR 0801 BUS converter and a PC or laptop If adjacent systems are operated without beam coding the user is at risk no interference E R R E m a d a LO a ooo y l _ __ Interference beam coding required E R E R gt gt gt e a a gt gt The beam coding increases the safety and avoids mutual interference of adjacent systems e The beam coding increases the immunity against optical interference e g sun light welding sparks The beam coding A is permanently shown by the transmitter and the receiver by means of flashing LED s refer to LED status information On adjacent systems the beam coding A must be used The response time of the system is increased when beam coding A is used To this end the safety distance must be adjusted to the hazardous movement Refer to chapter Response time SCHMERSAL Operating instructions Safety light curtain 2 8 6 Blanking Fixed blanking The SLC 425 can blank stationary parts in the protection field Multiple protection field areas can be blanked If small changes are made within the fixed blanking area each time 1 beam can be additi onnally blanked to increase the tolerance
22. contact is monitored and must be present for at least 5 0ms Subsequent operator interventions 5 will be counted in the next cycle The correct number of operator interventions 5 will start a new work cycle whereby the outputs 6 are re enabled The machine contact 7 stops the hazar dous movement and disables the OSSD outputs 7 again Schema two cycle operation 24V P 1 3 5 Protection field Mm i Ml M M M Ml 2 Start button l Machine contact l tz 30s Machine contact signal hazardous movement of the machine is terminated SCHMERSAL Operating instructions Safety light curtain Machine contact The machine contact is a signal which is transmitted from the machine control to the SLC 4251 This contact is used for the cycle reset and enables an immediate intervention in the protection field The signal is integrated in the control system of the SLC 425 with the status informa tion The hazardous movement is terminated The signal is preferably provided after the end of the downward move ment UT to the switching diagram when no hazardous movement is produced during the upward movement The machine contact suffices as individual contact The machine contact has a signal length of at least 50 ms and 1s at the most If the machine contact is not closed back within the time window ON signal no new cycle will take place The machine contact must be connected to the sensor connection field of the SLC 21
23. cycle protection field area The muting cycle is as follows Selectable options Factory setting Material transport in both directions The muting sensors must be arranged so that a uniform sequence of the muting sensors is ensured The intersection of both muting sensors always must be located inside the hazardous area Muting with 4 sensors parallel arrangement The arrangement shows the muting application with four parallel arranged muting sensors This arrangement enables the material to be transported in both directions Carrier MS1 O MS3 MS amp 4 Qoi A S1 s S2 S1 distance of the inner MS to SF S2 distance between two MS 10 CEN SLC 425l S3 material length MS 1 muting sensor 1 MS 2 muting sensor 2 MS 3 muting sensor 3 MS 4 muting sensor 4 S transmitter E receiver VB belt speed m s SF protection field S3 gt 2 S1 S2 S1 belt speed VB m s 0 05 s The muting cycle is as follows MS1 MS2 SF MS 3 end MS4 MS3 SF MS 2 end Belt stop override shortened muting cycle protection field area Selectable options Factory setting Material transport in both directions The muting figure with each time 2 muting sensors shows a symmetri cal arrangement before and after the protection field of the SLC 425l 2 10 Operating mode cyclic operation 1 to 8 cycles are available They are selected by means of the PC software and the NSR 0801 The factory setting is t
24. d The change from diagnostic mode to protective mode is automatically realised after Power Reset when the BUS con verter is no longer integrated and the connecting cable of the sensor is reconnected 7 Disassembly and disposal 8 Appendix 7 1 Disassembly 8 1 Contact The safety switchgear must be disassembled in a de energised condi Consultancy Sales tion only K A Schmersal GmbH Industrielle Sicherheitsschaltsysteme 7 2 Disposal M ddinghofe 30 The safety switchgear must be disposed of in an appropriate manner in D 42279 Wuppertal accordance with the national prescriptions and legislations Tel 49 0 202 64 74 0 Fax 49 0 202 64 74 100 You will also find detailed information regarding our product variety on our website www schmersal com Repair handling shipping Safety Control GmbH Am Industriepark 11 D 84453 M hldorf Inn Tel 49 0 8631 18796 0 Fax 49 0 8631 18796 1 SCHMERSAL CEN 19 safety contro Operating instructions Safety light curtain SLC 425l Appendix 8 2 EC Declaration of conformity SCHMERSAL EC Declaration of conformity Translation of the original declaration of conformity Safety Control GmbH Am Industriepark 33 84453 M hldorf Inn Germany Internet www schmersal com We hereby certify that the hereafter described safety components both in its basic design and const ruction conform to the applicable European Directives Name of the safety component type SLC 4251
25. d tighten the mounting screws in central position Make sure that the LED signal reception orange is not on or flashing 3 4 Safety distance The safety distance is the minimum distance between the protection field of the safety light curtain and the hazardous area The safety dis tance must be observed to ensure that the hazardous area cannot be reached before the hazardous movement has come to standstill Calculation of the safety distance to EN ISO 13855 successor of EN 999 and EN ISO 13857 The safety distance depends on the following elements Run on time of the machine calculation by run on time measurement Response time of the machine and the safety light curtain and the downstream relay entire safety guard Approach speed e Resolution of the safety light curtain Safety light curtain SLC 4251 The safety distance for resolutions 14 mm up to 40 mm is calculated by means of the following formula 1 S 2000 mm s T 8 d 14 mm S Safety distance mm T Total reaction time machine run on time reaction time of the safety guard relays etc d Resolution of the safety light curtain 12 CEN SLC 425l The approach speed is covered with a value of 2000 mm s If value S lt 500 mm after the calculation of the safety distance then use this value If value S gt 500 mm recalculate the distance 2 S 1600 mm s T 8 d 14 mm If the new value S gt 500 mm use this value as safety
26. description Ordering code iaa aenean ees 2 Special versions 0 000 c cece ee 2 Scope of delivery and accessories 000000eeeu 2 Optional accessories 000 cece eee 2 Destination and use 00 0 eee eee 2 Technical datas setii eset sce Pad ek ee riaa a erin 3 Response time reaction time 00020 20 eee 3 Safety classification 0 0 0 00 0 cee 4 FUNCHONS coa cece ce eee ee Ra ade ed eRe duet i 4 Factory Setting 3 cr oon pets aod e od ade ate Some aA 4 Restart interlock manual reset 0 00000020 eee eee 4 Contactor control EDM 0000 cee eee 4 Start interlock 0 0 0 eee 4 Beam coding 000 cece eee eens 4 BAG es oes eee vee nen rnd ons ne tee taed had a ste e Gh e a e 5 Testing ie ei saena ei E e E E a E gas shinee A 6 Operating mode muting o ae 6 Muting sensors MS 0 0 0 0 0c eee 6 Muting lampama oia GE eres eee meas 7 Signal sequence muting 00000 0c eee 7 Configuration of the muting function 7 Saving the data 0 0 0 0 00s 9 Muting applications 0 0 0 0 cee 9 Operating mode cyclic operation 02000000000 10 Mounting General conditions 00 0 cece eee 11 Protection field and approach 2000000ee eens 11 AlIQGNMe nt 24s sho bbe ede rad Baal Baten ooh teeta tod 12 Salety distance niano ennei coma te Rod eee eather 12 Minimum distance to reflecting surfaces
27. e SLC 425 Transport direction material transport in two directions selectable selectable options belt stop reduced muting cycle override protection field area Muting cycle time The muting cycle time is the time expiring between the moment of activation of the muting until the inward or outward material transport in the hazardous area is completely terminated The muting cycle time depends on the length of the material the belt speed and the sensor arrangement The time must be defined so that the material can travel by all sensors within the muting cycle time enabling of all muting sensors Before a new muting cycle can be initiated all sensors must be clear no actuation The muting cycle time can be set from a few seconds up to multiple hours Longer muting cycle times can result in hazardous operating conditions The muting cycle time must take variations in the belt speed as well as position and length tolerances of the material into consideration Operating instructions Safety light curtain Reduced muting cycle A normal muting cycle is terminated by a muting sensor in the following way e Muting with 2 sensors diagonal arrangement after enabling of muting sensor MS 2 e Muting with 4 sensors parallel arrangement after enabling of muting sensor MS 3 For very long muting cycle times this results in a time window with bridged protection field as long as the material is located between the protection field and
28. e safety switchgear must be exclusively used in accordance with the versions listed below or for the applications authorised by the manufac turer Detailed information regarding the range of applications can be found in the chapter Product description 1 5 General safety instructions Additional measures could be required to ensure that the electro sensi tive device does not present a dangerous breakdown when other forms of light beams are available in a special application e g use of wireless control devices on cranes radiation of welding sparks or effects of stroboscopic lights The user must observe the safety instructions in this operating instruc tions manual the country specific installation standards as well as all prevailing safety regulations and accident prevention rules Further technical information can be found in the Schmersal catalogues or in the online catalogue on the Internet www schmersal net The information contained in this operating instructions manual is provi ded without liability and is subject to technical modifications The entire concept of the control system in which the safety component is integrated must be validated to EN ISO 13849 2 There are no residual risks provided that the safety instructions as well as the instructions regarding mounting commissioning operation and maintenance are observed 1 6 Warning about misuse In case of inadequate or improper use or manipulations of the s
29. eased to 2 mm in case of a variable blanking of 34 beams The effective resolution must be registered permanently and clearly visible onto the label affixed to the receiver Effective resolution The effective resolution in case of activated blanking of floating beams can be found in the following table 1 14 24 2 14 34 3 14 44 4 14 54 5 14 64 6 14 74 7 14 84 8 14 94 1 30 45 2 30 65 3 30 85 4 30 105 The function is activated by means of the NSR 0801 BUS converter and a PC or laptop The activation of the function is signaled by the LED blanking flashing in the diagnostic window of the receiver The function is activated by means of the NSR 0801 BUS converter and a PC or laptop The activation of the function is signaled by the LED blanking flashing in the diagnostic window of the receiver The function mobile blanking is not available in the opera ting mode muting Perform a new calculation of the safety distance with the effective resolution Adjust the safety distance in accordance with your calculation After configuration the protection field must be checked by a responsible person by means of a test rod in addition to that this person must compare the size of the blanked area to the object size and if necessary provide for additional covers or a larger distance of the safety guard with regard to the hazar dous point The standard IEC TS 62046 includes information which describes possibly required additional measures
30. er first MS 1 first sensor group and subsequently MS 2 second sensor group is actuated by the material direction detection 1 The material first actuates the proteciton field of the SLC 4251 after that MS 3 first sensor group and finally the MS 4 second sensor group The muting cycle is cancelled when MS 3 second sensor group is no longer actuated SCHMERSAL CEN SLC 425l 2 9 4 Configuration of the muting function The parameters for the muting mode are set by means of the PC soft ware as of version SLC 4 Kunde exe To this effect the NSR 0801 BUS converter must be connected to the SLC 425l and a PC or laptop Please use the NSR 0801 BUS converter manual for the connection Operating mode set up for muting mode After the correct connection of the muting sensors and the NSR 0801 the following parameters must be set by means of the PC software in the muting function menu field in accordance with your application F SLC SLG 420 422 425 Ble yew Configuration Choose port Resolution Disconnect Muting function Cycle function SCHMERSAL safety control Generally Operating mode Muting with 2 pe sensors Diagonal arrangement Muting with 2 pe sensors Parallel arrangement Muting with 4 pe sensors Parallel arrangement Transportation direction amp Material transport into the dangerous zone Material transport out of the dangerous zone Material transport in both directions 00 0
31. ersions For special versions which are not listed in the order code below 2 1 these specifications apply accordingly provided that they correspond to the standard version 2 3 Scope of delivery and accessories Accessories included in delivery Mounting kit MS 1030 The kit comprises 4 rotating mounting angles and 16 mounting screws for fixing to the end caps Test rod PLS The test rod is used for testing the protection field 2 3 1 Optional accessories Centre fixing MS 1051 Consisting of 2 steel angles 4 fixing screws and 4 T slot nuts Connecting cable for transmitter Item number Designation Description Length 1207741 KA 0804 Female connector M12 4 pole 5m 1207742 KA 0805 Female connector M12 4 pole 10m 1207743 KA 0808 Female connector M12 4 pole 20m Connecting cable for receiver Item number Designation Description Length 1207728 KA 0904 Female connector M12 8 pole 5m 1207729 KA 0905 Female connector M12 8 pole 10m 1207730 KA 0908 Female connector M12 8 pole 20m BUS converter NSR 0801 Converter for parametrization and diagnostics Detailled information can be found in the operating instructions manual of the NSR 0801 Included in delivery integrated connecting cable PC software USB 2 0 connection L x W x H 122 x 60 x 35 mm indications of measure ments without cable MSD4 Vibration damper Kit comprising 8 vibration dampers 15 x 20 mm 8 x M5 socket head cap screws 8 spring washers The MSD4 vibration dam
32. erved and respected The SLC 425 must not be used on machines which can be stopped electrically in case of emergency The safety distance between the SLC 425 and a hazardous machine movement must always be observed and respected Additional mechanical safety guards must be installed so that the operator has to pass by the protection field to reach the hazardous machine parts The SLC 4251 must be installed so that the personnel always must be within the detection zone when operating the machi ne An incorrect installation can lead to serious injuries Never connect the outputs to 24VDC If the outputs are wired to 24VDC they are in ON state as a result of which they are unable to stop a hazardous situation occuring on the application machine The safety inspections must be conducted regularly The SLC 425 must not be exposed to inflammable or explo sive gasses The connecting cables must be connected in accordance with the installation instructions The fixing screws of the end caps and the mounting angle must be firmly tightened Additional measures could be required to ensure that the electro sensitive device does not present a dangerous breakdown when other forms of light beams are available in a special application e g use of wireless control devices on cranes radiation of welding sparks or effects of stroboscopic lights 3 2 Protection field and approach The protection field of the SLC 425I consists of the entire range
33. evented see chapter Beam coding Switch the SLC 4251 on and check the operation in the following way The component performs a system test during approx 2 seconds after the operating voltage has been switched on After that the outputs are enabled if the protection field is not interrupted The LED OSSD ON of the receiver is on In case of incorrect functioning please follow the instructions listed in the chapters Indication and Fault diagnostic SCHMERSAL SLC 425l 5 2 Maintenance Do not use the SLC 4251 before the next inspection is termi nated An incorrect inspection can lead to serious and mortal injuries Conditions For safety reasons all inspection results must be archived The opera ting principle of the SLC 4251 and the machine must be known in order to be able conducting an inspection If the fitter the planning technician and the operator are different persons please make sure that the user has the necessary information at his disposal to be able conduct the maintenance 5 3 Regular check A regular visual inspection and functional test including the following steps is recommended 1 The safety light curtain does not have any visible damages 2 The optics cover is not scratched or soiled 3 Hazardous machinery parts can only be accessed by passing through the protection field of the SLC 4251 4 The staff remains within the detection area when works are conduc ted on hazardous machinery
34. gear The operating inst ructions must be available in a legible condition and a complete version in the vicinity of the device 1 2 Target group authorised qualified personnel All operations described in this operating instructions manual must be carried out by trained specialist personnel authorised by the plant operator only Please make sure that you have read and understood these operating instructions and that you know all applicable legislations regarding occupational safety and accident prevention prior to installation and putting the component into operation The machine builder must carefully select the harmonised standards to be complied with as well as other technical specifications for the selec tion mounting and integration of the components 1 3 Explanation of the symbols used Information hint note This symbol is used for identifying useful additional information Caution Failure to comply with this warning notice could lead to failures or malfunctions Warning Failure to comply with this warning notice could lead to physical injury and or damage to the machine 1 4 Appropriate use The products described in these operating instructions are developed to execute safety related functions as part of an entire plant or machine It is the responsibility of the manufacturer of a machine or plant to ensure the correct functionality of the entire machinery or plant Operating instructions Safety light curtain Th
35. guration error Diagnostic mode active error output refer to Fault diagnostic table Start or restart interlock active waiting for signal at output WA Request actuation of the start button Request refer to start condition Request for operator intervention Check machine contact Signal reception too low check alignment and installation height between transmitter and receiver cleaning the black profile cover Alignment between transmitter and receiver OK Fixed blanking of the protection field s Floating blanking max 1 beam Variable blanking multiple beams Floating max 1 beam and fixed blanking of protection field s Mobile multiple beams and fixed blanking of protection field s Muting complete protection field Muting only teached protection field Muting through BUS control Cyclic operation Beam coding A is active This function is not available for the operating modes muting and Status LED Description Standard operation transmitter active Configuration error Beam coding A is active SCHMERSAL Operating instructions Safety light curtain SLC 425l 6 2 Fault diagnostic The light curtain performs an internal self test after the operating voltage is switched on and the protection field is enabled When a fault is detec ted a corresponding flashing pattern is emitted at the receiver through the LED OSSD OFF red Every fault emission is followed by a one second pause OSSD OFF and LED re
36. hazardous point 0 2 3 0 130 4 175 Tool upper part 5 220 7 310 Signal to stop th a saa ignal to stop the i 4 lt ta hazardous movement 15 660 Protection field marking lt 75 4 te Standstill of the hazar dous movement h ts ta Formula a tan 2 5 x L mm a Minimum distance to reflecting surfaces Tool lower part i i L Distance between transmitter and receiver lt 75 mm max distance for protection against stepping over To prevent persons from stepping over the protection field this dimension must be imperatively respected and observed The formulae and calculation examples are related to the vertical set up refer to drawing of the light curtain with regard to the hazardous point Please observe the applicable harmonised EN standards and possible applicable national regulations The successor standards of the EN 999 for calculating the minimum distances of the safety guards with regard to the hazardous point are EN ISO 13855 and EN ISO 13857 3 4 1 Minimum distance to reflecting surfaces During the installation of the safety light curtain the effects of reflecting surfaces must be taken into account In case of an incorrect installati on interruptions of the protection field could possibly not be detected which could lead to serious injuries The hereafter specified minimum distances with regard to reflecting surfaces metal walls floors ceilings or parts must be imperatively observed Access directi
37. input MS425 MC by means of a separate cable at least 1 poles Start conditions First actuate the start button and then execute the operator interven tions The start condition must be executed prior to the first machine cycle after the supply voltage is switched on e false intervention in the protection field e cycle time exceeded e false machine contact or time window exceeded Further machine cycles are only controlled by the operator interven tions The time between the operator intervention and the actuation of the start button may be max 30 sec at the most Cycle time The cycle time is the time between two successive cycles i e interven tions in the protection field material feed and removal This time must be set by the machine installer in accordance with the machine running time For this time setting a tolerance must be observed in order for to allow for the material to be processed to be fed and removed at a normal operating speed The cycle time is reset by actuating the enabling command device or by starting a new work process The cycle time can be set by means of the PC software Upon delivery the time is set to 30 sec The value range is defined from 1 sec to 30 sec with an increment of 1 sec Operator interventions The operator interventions in the protection field are counted and time monitored in accordance with the setting To prevent unintentional operator interventions the minimum time
38. inten tional access or penetration of a person into the hazardous area is prevented When positioning the muting sensors the distance and the height must be choses so that a clear distinction is made between material and a person 2 9 2 Muting lamp The operating mode muting can be signalled through an external mu ting lamp This lamp must be connected to the sensor connection plate ML through a connection with a 3 pole connector socket The muting lamp is not monitored l e the electrical connection and the included illuminant are not checked by the control system of the SLC 425 The muting lamp signals the following operating modes ON Continuous signal Muting cycle active OFF Muting cycle not active Flashing 2 Hz Muting cycle error or over ride mode If the muting lamps are flashing the following failures can be present e Muting cycle time exceeded e Belt stopping time exceeded e Sequence or simultaneity of the signal conditions of the MS not observed Illuminant For the muting lamp a LED block with a lifetime of approx 50 000 operating hours must be used as admissible illuminant The utilisation of MK2 type muting lamps is recommended 2 9 3 Signal sequence muting 1 active 2 inactive MS3 MS4 MS1 MS2 Sensor group 1 Sensor group 2 Parameter setting muting mode with 2 sensor groupes 4 muting sen sors direction detection 1 premature termination not active The muting function is activated aft
39. ithout exer cising pressure The use of agressive abrasive or scratching cleaning agents which could attack the surface is prohibited CEN 17 Operating instructi Safety light curtain em PE Te E ale 6 1 LED status information Receiver Multifunction Blanking RO 0 Signal reception MURAD OSS OSS v Protection field Multifunction green Blanking blue Signal recep orange tion Restart yellow OSSD OFF red OSSD ON green Transmitter Transmitting Status v Protection field Transmitting orange Status green 18 ons OKA AIS Restart D OFF D ON Function display beam coding Protection field e inactive blanking Safety monitoring module of signal reception Input for command device Safety outputs signal condition OFF Safety outputs signal condition ON Transmitter active Function display beam coding LED OSSD ON OSSD OFF Restart Restart only for cyclic operation Signal reception Blanking Variable blanking Multi function display cyclic operation LED Transmitting ON flashing flashing Status Status LED ON Flashing ON Flashing ON ON Flashing 2 Hz Flashing 0 25 Hz ON flashing OFF 1 flashes 2 flashes 3 flashes 4 flashes 5 flashes 1 flashes 2 flashes 3 flashes 4 flashes 5 flashes SLC 425l Description Protection field clear Diagnostic mode active Protection field interrupted sys tem or confi
40. multiple interruption of the protection field the protection field is monitored during the active muting cycle and any non actuation no beam interrupted immediately cancels the muting cycle This error function is triggered when all active beams of the protection field are not actuated for a period of time of over 20 ms e g due to an irregular loading of the material on the carrier If the function is activated no shutdown is triggered if the beams are not actuated during the muting cycle The correct termination is realised by the configuration or the muting sensors The combination with the parameter setting reduced muting cycle is not possible These restric tions are marked in the software and must be observed Activating the protection field During a muting cycle the entire protection field height of the SLC 4251 is bridged This causes the risk that persons located on or beside the material can get into the hazardous area The risk can be avoided by activating the remainder of the protection field if the conveyed material has a throughout identical height In this way the presence of persons within the active protection field height is detected Procedure Position the material onto the carrier so that the protection field of the SLC 425l is actuated If the material height is slightly varying the carrier can be slightly increased during the teaching process to avoid false triggering Now activate the teach sample field in
41. of 100 ms must be observed for an intervention in the protection field beam interrupted and cleared Configuration cyclic operation The parameters for the cyclic operation are set by means of the PC software as of version SLC 4 Kunde exe To this effect the NSR 0801 BUS converter must be connected to the SLC 4251 and a PC or laptop Please use the NSR 0801 BUS converter manual for the connection Click with your mouse on the cyclic function field to select the cyclic function upon delivery the muting function is activated Therefore the muting function must be deactivated After selection of the cyclic function the following parameters must be set in the menu window SCHMERSAL SLC 425l Ganersly Muting hunction Cycle kancton Wadung cycies nead PTT karida wess Cycles The number of required operator interventions in the protection field for the material feed or removal must be selected Operator interventions of 1 to 8 cycles can be chosen The number can be set by means of the arrow keys Cycle The cycle time must be set as described above Saving the data To save the data for the SLC 425l safety light curtain please refer to chapter 2 9 5 Muting description 3 1 General conditions The following guidelines are provided as preventive warning notices to ensure a safe and appropriate handling of the SLC 4251 These guide lines are an essential part of the safety instructions and therefore must always be obs
42. on Transmitter P ee Receiver Fie Obstacle T ee reflecting body e g material container Limit of the hazardous point N Table Safety distance a a mm A gt D m 0 35 10 5 20 Calculate the minimum distance to reflecting surfaces as a function of the distance with an aperture angles of 2 5 degrees or use the value from the table below S SCHMERSAL CEN 13 Operating instructions Safety light curtain SLC 425l 3 5 Dimensions All measurements in mm ALSE o SLC 425I E RO170 XX RFBC 170 288 352 324 388 N SLC 425I E RO250 XX RFBC 250 368 432 404 468 SLC 425I E RO330 XX RFBC 330 448 512 484 548 N Cele SLC 425I E RO410 XX RFBC 410 528 592 564 628 To I a i SLC 425I E RO490 XX RFBC 490 608 672 644 708 rE SLC 425I E RO570 XX RFBC 570 688 752 724 788 8 SLC 425I E RO650 XX RFBC 650 768 832 804 868 E SLC 425I E RO730 XX RFBC 730 848 912 884 948 O SLC 425I E RO810 XX RFBC 810 928 992 964 1028 8 O SLC 425I E RO890 XX RFBC 890 1008 1072 1044 1108 5 O SLC 425I E RO970 XX RFBC 970 1088 1152 1124 1188 SLC 425I E R1050 XX RFBC 1050 1168 1232 1204 1268 S
43. per kit must be used for damping vibrations and oscillations on the safety light curtain SLC 425 For applications with higher mechanical stresses e g presses punching machines we recommend the MSD4 kit In this way the availability of the safety light curtain SLC 425 is increased 2 4 Destination and use The SLC 425l is a non contact self testing safety guard which is used for the protection of hazardous points hazardous areas and machine accesses If one or more light beams are interrupted the hazardous movement must be stopped The user must evaluate and design the safety chain in ac cordance with the relevant standards and the required safety level SCHMERSAL Operating instructions Safety light curtain 2 5 Technical data EN 61496 1 CLC TS 61496 2 EN ISO 13849 EN 62061 Aluminium 249mm 2 144 Beams 170 1450 mm Resolution 14 mm 170 250 330 410 490 170 1770 mm Resolution 30 mm 170 250 330 410 490 14 mm 30mm 0 3 up to 7 0 m Resolution 14 mm 0 3 up to 10 0 m Resolution 30 mm 1 48 L 15 ms 49 144 L 25 ms without beam coding A 1 48 L 20 ms 49 144 L 32 ms with beam coding A 24 VDC 10 PELV supply unit to EN 60204 power drop gt 20 ms 400 mA max 0 5 A OSSD load output signal quality load 880 nm 2 x PNP type semi conductor short circuit proof 15 28 8 V 0 2V 0 500 mA 1 mA 2 uF 2H 2 50 10 Contactor control EDM 17 29 V 0 2
44. receiver Floating blanking The SLC 425 can blank movable parts in the protection field Cylinder for material ejection aus a e me The function enables an arbitrary floating blanking of partial areas in the protection field The first beam which is located immediately behind the diagnostic window cannot be blanked The SLC 4251 can blank one or more beams in the protection field A combination of fixed and variable blanking is possible This function allows for an interruption of the protection height without the outputs being disabled in case of material movement in the protec tion field e g material ejection or process controlled material move ment This extension of the object detection increases the resolution In this way the physical resolution changes into an effective resolution This effective resolution must be used to calculate the safety distance This effective resolution must be used to calculate the safety distance Calculation of the safety distance in accordance with the effective SCHMERSAL CEN SLC 425l resolution for the blanking of a maximum of 2 beams by means of for mula 1 in case of more than 2 beams by means of formula 3 of the chapter Determination of the safety distance The number of beams to be blanked is limited by the software In a system with a 14 mm physical resolution the effective resolution is incr
45. rence When optoelectronic sensors are used the switching outputs must be set to dark operation sensor actuated 24 VDC The sensors must be arranged so that the transported material part is detected without any interruption over the entire length The sensors must detect the material not the means of transport The distance of the sensors must not be too large so that all activa ted muting sensors are actuated by the travelling material during a cycle The simultaneity max 3 sec of the switching outputs must be observed Anew muting process can only be started when the previous is termi nated all sensors not actuated A safety distance of at least 50 mm belt speed V lt 2 0 m s must be observed with regard to the protection field in order to ensure a safe signal evaluation by the control system Installation of the muting sensors If 4 muting sensors are used the switching outputs of the muting sensors MS 1 and MS 3 as well as MS 2 and MS 4 must be wired in pa rallel MS 1 and MS 3 are connected to the MS1 MC connector socket on the sensor connection plate MS 2 and MS 4 to the MS 2 connector socket Sensor connection with 2 muting 24VDC sensors 5MS1 d MS2 MS 1 MS 2 SLC 425I sensor connection with 4 muting 24VDC oO sensors OMS 1 MS3 OMs2 MS 4 SLC 425I sensor connection SCHMERSAL Operating instructions Safety light curtain The muting sensors must be arranged so that any un
46. rride protection field area Shortened muting cycle i e the muting cycle is terminated when the protection field is released The muting cycle is as follows Selectable options Factory setting This arrangement is only authorised when the muting sensors are installed inside the hazardous area Operating instructions Safety light curtain Muting with 2 sensors diagonal arrangement The arrangement shows the muting application with two diagonally crosswise arranged muting sensors This arrangement enables the material to be transported in both directions Schematic representation Hazardous area Additional safety guard ra 7 Carrier Schematic representation S1 distance MS 1 to SF S2 distance MS 2 to SF S3 material length MS 1 muting sensor 1 MS 2 muting sensor 2 S transmitter E receiver VB belt speed m s SF protection field S3 gt S1 S2 S1 belt speed VB m s 0 05 s The intersection of the muting sensors must always be within the hazardous area In the schematic diagram the arrangement of the muting sensors is represented with a larger distance to enable a uniform identification of the sensor sequence Please observe the smallest possible distance of the MS to the transported material The distance of MS 1 and MS 2 to the protection field of the SLC 4251 must be chosen as small as possible as well MS1 MS2 SF MS2 end Belt stop override shortened muting
47. talled outside of the hazardous area so that the operator has a clear view on the area The command device must be actuated after any interruption of the voltage or the protection field or fault of the muting cycle Enabling is only possible when all muting sensors are not actuated The signalling for the actuation of the command device is realised by a status LED on the receiver The function can be deactivated by removing the check mark in the software By doing this the following operating condition is created the outputs OSSD s are released when all light beams and the muting sensors are not interrupted light path clear The same applies after an interruption of the voltage supply A release through the command de vice is only required after a malfunction muting cycle fault The owner then must secure this function through the application The deactivation of the restart interlock function can trigger an automatic muting cycle In this way persons can access penetrate into the hazardous area Persons within the hazar dous area are exposed to severe injuries Belt stop The function can extend the muting cycle time in case of a belt stop or material jamming thus preventing a premature shutdown In this way the muting function can be extended until the failure belt stop is recti fied After that the normal muting cycle can be terminated The machine control makes the belt stop input available as signal The function is acti
48. ternal wiring manual reset Contactor control not active With BUS converter NSR 0801 and PC software Start interlock not active With BUS converter NSR 0801 and PC software Beam coding not active With BUS converter NSR 0801 and PC software With BUS converter NSR 0801 and PC software Blanking fixed variable not active Muting active With BUS converter NSR 0801 and PC software Cyclic operation not active With BUS converter NSR 0801 and PC software 2 8 2 Restart interlock manual reset The restart interlock prevents an automatic enabling of the outputs OSSD s ON state after switch on of the operating voltage or an inter ruption of the protection field The system switches the outputs only to ON state when an external command device restart button generates an enabling signal at the restart input receiver The command devices enabling button must be installed outside of the hazardous area The operator must have a clear view on the hazardous area when actuating the enab ling button In supply condition the restart interlock is not active You must select an operating mode in order for the outputs OSSD s to be enabled If no type of protection is selected you will obtain the following signalisation through the LED status indication in the receiver LED OSSD OFF red LED restart yellow flashing SLC 425l 2 8 3 Contactor control EDM The contactor control monitors the controlled switching elements auxiliar
49. the muting sensor MS 2 MS 3 By activating the function the muting cycle is shortened reduced The muting cycle is terminated when the material has travelled by the protection field of the SLC 4251 protection field clear This field is always activated when applied with 2 parallel arranged muting sensors For applications with 2 diagonally arranged MS or 4 parallel arranged MS the function can be activated by means of the software Anew muting cycle can only be started when all muting sensors are no longer actuated Simultaneity of the sensors The timeframe between the first and the second muting sensor is moni tored In this way a uniformly shaped transport good can be distingu ished from other switching times passing by of a person in case of an adequate arrangement of the muting sensors The simultaneity setting must take variations in the belt speed as well as the position and length tolerances of the material into consideration The simultaneity of the sensors can be set between 1 to 3 seconds Setting the special functions is recommended In this way the protective function and the availability of the muting application is increased Restart interlock manual reset The restart interlock prevents an automatic belt start after voltage inter ruption or material jamming The restart interlock must be wired as shown in the wiring diagram chapter 4 The function is active upon delivery The command device must be ins
50. the software The menu automa tically switches to the beam view The beams interrupted by the material are represented in red The teaching process is terminated with a mouse click on the teach field You will return to the main menu muting Changing the protection field area If the protection field height parameterised by means of the teach process needs to be changed the saved value must be deleted and reparameterised Procedure Activating the entire protection field the previous value is deleted Activating the teach sample change to beam view Saving the new value teach process with teach Mounting The first light beam near the diagnostic window must not be interrupted l e observe the downward cable connection SCHMERSAL Operating instructions Safety light curtain 2 9 5 Saving the data After the reconfiguration the data to be saved are prepared by selec ting the button Save settings To avoid unintentional saving of the data every intentional save procedure must be confirmed by clicking an additional button Confirm within 10 seconds by clicking this button within 10 seconds If the change is confirmed within 10 seconds the new configuration is transferred to the SLC 425l safety light curtain If it is not confirmed within this timeframe the settings that were saved before the change was made will be maintained without any change After the data transmission the following confirmation is displ
51. vated by switching on 24 VDC at pin 8 of the recei ver A status change of the muting sensors switching output when the function is active causes the muting function to be switched off The function is deactivated upon delivery The belt stop time can be set from 1 to 30 minutes 8 CEN SLC 425l Override This function enables bridging the outputs of the SLC 4251 in case of failure voltage interruption material jamming The function is limited in time and exclusively reserved to the elimination of the material jamming muting sensor or protection field actuated The function is activated by means of the command device restart interlock enabling The command device must be actuated in the sequence ON OFF ON The time related sequence for the start ON OFF ON with a minimum duration of 100 ms up to the maximum duration of 1 5 sec must be observed If the material jamming is eliminated protection field and muting sensors no longer actuated the outputs of the SLC 425l are locked To start a new muting cycle the command device enabling of the restart interlock must be actuated one time ON OFF The muting lamp starts flashing 2 Hz to signal the interruption of the muting cycle The function is not activated upon delivery Multiple interruption of the protection field during the muting cycle This function increases the availability of the system in case of different material qualities on one pallet Without the function
52. wo cycle operation and a 30 sec cycle time Adequate and appropriate application The cyclic operation must be used for machines with short processing times The function enables an automatic work sequence by the cyclic feed and removal of parts in the protection field of the SLC 4251 The automatic sequence is time monitored In this way up to 8 work pieces 8 interventions in the protection field can be processed at the same time This function is only authorised for the above described application For other applications no warranty claims shall be accepted No liability shall be accepted either when the following mounting conditions safety instructions and correct parameter setting are not respected and observed Operating principle cyclic operation The interventions of the operator N 1 in the protection field during the first machine cycle are not evaluated The start condition for the first cycle is available after the actuation of the start button 2 and both operator interventions 3 for the 2 cycle operation As a result of the operator interventions the OSSD outputs 3 are enabled The down ward movement of the machine hazardous machine movement takes place During the hazardous work cycle all operator interventions will cause the outputs to be disabled As soon as the hazardous movement of the machine is terminated the machine contact 4 is opened and the outputs 4 are disabled The signal length of the machine
53. y contacts of the contactors of both outputs This monitoring is realised after each interruption of the protection field and prior to the restart enabling of the outputs In this way malfunctions of the relays are detected e g contact welding or contact spring breakage If the light curtain detects a malfunction of the switching elements the outputs are locked After fault rectification the operating voltage must be once switched off and back on power reset The contactor control is not activated upon delivery This function is activated by means of the NSR 0801 BUS conver ter and a PC or laptop The contactor control function is not available in the opera ting mode muting 2 8 4 Start interlock The start interlock prevents an automatic start of the machine when the supply voltage is switched on After enabling of the start interlock by the one time interruption of the protection field this protective function is deactivated until the next power reset The start interlock is not activated upon delivery This function is activated by means of the NSR 0801 BUS converter and a PC or laptop 2 8 5 Beam coding The beam coding of the safety light curtain must be adjusted when systems operating in each other s vicinity and a set up as shown in the image below no interference is impossible When supplied the beam coding is not active With beam coding A a receiver can distinguish the beams of the transmitter with the same
54. y valid for the cable types mentioned below optional accessories 16 CEN S SCHMERSAL Operating instructions Safety light curtain 4 3 Sensor connection field MS1 MC MS2 ML Muting sensor 1 machine contact MC muting sensor 2 muting lamp Muting sensors PIN No Signal Description 1 24 VDC Power supply 3 OV Power supply 4 24 VDC Switching output Sensor Machine contact PIN No Signal Description 3 OV Power supply 4 24 VDC Switching output ML 5 Set up and maintenance 5 1 Check before start up Prior to start up the SLC 425 the following items must be checked by the responsible person Wiring check prior to start up 1 The voltage supply is a 24V direct current power supply which meets the CE Directives Low Voltage Directives A power downtime of 20 ms must be bridged 2 Presence of a voltage supply with correct polarity at the SLC 425 3 The connecting cable of the transmitter is correctly connected to the transmitter and the connecting cable of the receiver correctly to the receiver 4 The double insulation between the light curtain output and an exter nal potential is guaranteed 5 The outputs OSSD1 and OSSD2 are not connected to 24 VDC 6 The connected switching elements load are not connected to 24 VDC 7 If two or more SLC 425 are used within close range compared to each other an alternating arrangement must be observed Any mutual interference of the systems must be pr
Download Pdf Manuals
Related Search