Multiple safety light barrier

Transcription

1 Technical escription Multiple safety light barrier Switching evice to wire alternatively: 1-4 safety light barriers Type WN Plastic housing IP65 Type WN Sheet-metal housing IP20 Type WN 304-5M with start an restart lock Plastic housing IP65 Type WN 314-5M with start an restart lock Sheet-metal housing IP20 Teste accoring to EN :2009 ESPE type 4 (self monitoring) by testing an certification boy Prüf- un Zertifizierungsstelle im BG-PRÜFZERT. Fachausschuss Maschinenbau, Hebezeuge, Hütten- un Walzwerksanlagen Kenn-Nummer 0393, Graf- Recke-Straße 69, D Düsselorf. European notifie boy, ientification number 0393 Performance Level PL e, Categorie 4 acc. EN ISO , 2008 Fully compatible to our oler moels WN3xx -1 to -4 Aaptable for one to four light barrier evices via DIP switch The light barrier that causes a interruption is isplaye by a LED in the emitter Emitter an receiver available as straight an angular moel Slener esign of our emitters an receivers Am Roaugraben 2, Wörth, (07271) 6136

2 WN 304, WN 314 / page 2 of 14 1 General This instruction manual is a constituent part of the safety light barrier WN 304, WN 314 an its eicate transmitters an receivers. It must be available to all personnel concerne with assembly, commissioning, an maintenance uring its entire life cycle. If the instructions in this manual are not followe or only partly followe, accients coul occur. Any warranty claims against WERAC Elektronik GmbH become null an voi in this case. 1.1 Designate use: The safety light barrier systems consist of the certificate components control unit, transmitter an receiver (see type name) an may be use only coherently. The system is a electro-sensitive protective equipment (ESPE) of the type 4 accoring to IEC which can be use epening on the implementation for the access security of anger zones an safeguaring angerous points on power-riven machinery in compliance with the safety engineering requirements as state in the stanar EN 999 an the stanars of the corresponing machinery up to category 4 accoring to EN Approval EC type-test certificate: MHHW Fachausschuss Maschinenbau, Hebezeuge, Hütten- un Walzwerksanlagen Prüf un Zertifizierungsstelle im BG-PRÜFZERT, Kenn-Nummer 0393 [Expert Committee on Mechanical Engineering, Lifting Equipment, Iron-Making an Steel-Making. Testing an certification boy of BG-PRÜFZERT, ientification number 0393] Graf-Recke-Straße 69 D Düsselorf 1.3 Manufacturer WERAC Elektronik GmbH Telephone: 07271/6136 Am Roaugraben 2 Telefax: 07271/8932 D Wörth am Rhein info@werac.e 1.4 Version no. This manual applies for the safety light barriers of version 1.2 of Approval marks MHHW QM-System ISO Description of function Our safety light barriers consist of one up to four emitters, one to four receivers an the control unit WN 304 or WN 314. No external test signal is require, the system tests itself internally. The WN 304, WN 314 control unit must first of all be enable via start enable T1, T2. The self monitoring logic starts an checks the photo switches in serial, each with emitter on an off. Provie that the light barriers are not interrupte an without internal or external errors, the output relays A an B are activate. Each of these relays elivers one normally opene contact for external use. If one relay fails, the secon one remains roppe, i.e. in a safe conition. The switching status of the relays is inicate in the control unit s LED s. If a light beam is interrupte the LED in the accoring emitter lights up until the next start. Thereby it is easier to fin the reason why the machine has stoppe, especially if the failure is not static. After power-on or a switch off by a light barrier, which also influences the following circuit, all emitter LED s stay e-energize. A ifferentiation of the cause of switch off between a light barrier an the safety microswitches is thereby easier to take. The current is supplie from the mains via a transformer with a PTC fuse. A start an restart lock is in the alreay integrate in the control units WN 304-5M, WN 314-5M an always active. However, when the control unit types WN an WN are use the restart lock must be realize by a following circuit with relays or contactors as shown uner point 6.

3 WN 304, WN 314 / page 3 of 14 3 Start When you want to start the safety light barrier you have to istinguish between the evices with integrate start an restart lock without start an restart lock. Without start an restart lock (evices - types WN 304-5, WN 314-5) To start the safety light barriers an to keep the system active, a current through the optocoupler must be provie (terminal T1 an T2). With start an restart lock (evices - type WN 304-5M, WN 314-5M) For follow-circuits without start an / or restart lock, that o not go to the OFF position after power ON, the M version WN 304-5M, WN 314-5M (start lock) can be use, which takes over the start an restart lock. A low high signal at the start enable input is necessary to start the light barrier evice, for example after a light barrier was interrupte (restart lock), the current must flow through T1, T2 constantly as long as the light barrier shoul be active. 4 Optical ajustment an setting the number of sensor pairs The number of light barrier evices (1 to 4) is set with the DIP-switches S2 in accorance with the following table 1. This is a safety setting (parameters) that epens on the requirements escribe in Chapter 8, that means the requirements of section 8 must be complie with. DIP switch LB off off on on 2 LB on off off on 3 LB off on on off 4 LB on on off off Table 1 Before putting the system into operation, all light barrier evices must be ajuste. To ajust the light barriers set DIP-switch S1/A an S1/1-4 (corresponing to the number of the light barrier) in ON position. The LED in the selecte emitter lights up. As soon as emitter an receiver are ajuste correctly, the yellow LED in the receiver lights up. When the optimal position of emitter an receiver in both axis is foun, the ajustment proceure can be finishe by setting all DIP switches S1 (except of S1/B) to position OFF. Error flashing on the control unit oes not influence the ajustment uring the ajustment moe. After the successful ajustment of the sensors, the control unit must be switche off an on again, then the evice is reay. To check the ajustment reserve it is possible to reuce the emitting power by a factor of 30 %. For that set DIP switch S1/B in OFF position. If a light barrier oes not work it is necessary to reajust the concerne line. This test shoul be one uring the yearly maintenance routine. It is possible to o the test with running machine. Attention: In normal operation the DIP switches S1/A an S1/1 to 4 are in OFF posiotion, S1/B in ON position. Since our emitters work with infrare light, the light beams are invisible for the human eye. For a more comfortable ajustment proceure we recommen our measure-receiver an our optic gray filters. Note: If the number of light barrier evices an the position of the DIP switch (S2) o not correspon, the output relays will stay e-energize.

4 WN 304, WN 314 / page 4 of Technical ata for control unit WN Stanar to IEC EN Type 4 Performance Level PL e, Categorie 4 (EN ISO , 2008) Probability of a angerous failure per hour PFH D = 4.93 E-08 1/h Mission time TM 20 years Response time <20 ms Permissible operating temperature C Stock temperature -25 C C Supply voltage 230V ± 10% Hz Deviating line voltage 24 V ± 10% Hz Power consumption Output contacts: max. switching voltage max. switching current at 230 V~ (in. loa) max. switching frequency min. operating cycles ca. 8 VA 250 V~ 2 A 2 /s 10 7 with contactor for 5.5 kw 3-phase motor Switch-on elay after power supply ON ~ 4 s Switch-on elay after test ON 70 ms Housing ABS, gray Enclosure rating IP 65 Electrical connection Terminal plug, up to 2.5 mm² spring-type terminal (emitter an receiver) Status isplay re, yellow, green Start enable T1, T2 external voltage V Table 2 External connections control unit WN 304, WN314 (see fig. 1) connection A1 A2 (normally safety output relay A - OSSD 1 open contact/ NOC) connection A5 A6 (NOC ) safety output relay B - OSSD 2 connection A3-A4 (normally e.g., message to PLC, rest NCC query, isplay re close contact/ NCC) connection A4-A7 (NOC) e.g., message to PLC, isplay green connection T1, T2 start enable of the sequential switching connection PE, 0V, 24V or PE, electricity supply with 24 V AC or 230 V AC N, L1 Table 3 The relay outputs are line voltage isolate from the light barriers; to IEC overvoltage category III The control unit starts automatically, when a current flows through T1, T2. For a sequential switching without restart lock the control unit version M is available. These control units start only after etecting a low-high slope of the current through T1, T2. The system is compatible to all emitters WS 50 WS 531 (stanar an small versions) an all receivers WE 50 WE 531 (stanar an small versions). 4.2 Technical ata for control unit WN Similar to control unit WN 304, but with sheet-metal housing that can be snappe on to the TS 35 rail for mounting insie control cabinets. Enclosure rating IP 20. The control cabinet has to come up to soiling category 2 accoring to DIN VDE Technical ata for emitters with front or angular optics WS52 stanar angular optics WS 51C small front optics with plug

5 WN 304, WN 314 / page 5 of 14 WS 5xx Stanar to IEC EN type 4 Infrare impulse light (950 nm) focuse to ± 2 Permissible operating temperature C Stock temperature C Display yellow LED in all emitters Housing ABS, yellow, enclosure rating IP 65 With of guare area see table 5 Electrical connection 3 m cable (max. 25 m) 2 x 0.25 mm² with wire terminal lug Optional plug M12 x 1 instea of cable output. Type no. With aitional C (e.g. WS 53C) Stanar ESPE type 4 EN : 2009 Permissible operating temperature C Table 4 type optics housing range active light beam extene range WS 50 front stanar 6 m 12 mm - WS 501 front stanar 9 m 12 mm X WS 52 angular stanar 6 m 12 mm - WS 521 angular stanar 9 m 12 mm X WS 51 front small 6 m 9.5 mm - WS 511 front small 8 m 9.5 mm X WS 53 angular small 6 m 9.5 mm - WS 531 angular small 8 m 9.5 mm X Table 5 Emitters with extene range must be operate exclusively with the accoring extene range receivers. Our small housing emitters (light beam iameter 9.5 mm) must be use exclusively with our small housing receivers. Emitters with stanar housing (light beam iameter 12 mm) must be operate with stanar housing receivers. 4.4 Technical ata for receivers with front or angular optics type housing optics extene active light beam range WE 50 stanar front - 12 mm WE 501 stanar front X 12 mm WE 52 stanar angular - 12 mm WE 521 stanar angular X 12 mm WE 51 small front mm WE 511 small front X 9.5 mm WE 53 small angular mm WE 531 small angular X 9.5 mm Table 6 Note: The receivers with an aitional inex 1 (e.g. WE 501) have a improve match of optical an mechanical axis. Receivers with extene range must be operate exclusively with the accoring extene range emitters. Receivers with stanar housing (light beam iameter 12 mm) must be operate exclusively with the accoring stanar housing emitters. Our small housing receivers (light beam iameter 9.5 mm) must be use exclusively with our small housing emitters. The receivers of the types WE 5x are fully compatible to our oler types WE 4x. WE 53 small angular optics WE 50 stanar front optics

6 WN 304, WN 314 / page 6 of 14 WE 5xx Stanar to IEC EN Type 4 Sensor phototransistor, ± 2, preamplifier, switching amplifier Permissible operating temperature C Stock temperature C Display yellow LED in all receivers Housing ABS, yellow, enclosure rating IP 65 With of guare area see table 5 Electrical connection 3 m cable (max. 25 m) 2 x 0.25 mm² with wire terminal lug optional plug M12 x 1 instea of cable output. Type no. With aitional C (e.g. WE 51C) Emitter impulse keying To increase immunity to interference against incience of extraneous light pulses Stanar ESPE type 4 EN : 2009 Permissible operating temperature C Table 7 5 Wiring iagram control unit WN The numbers in brackets refer to variant with output plug white (2) (4) green green (4) Empfänger receiver emitter yellow (3) all types all types (1) brown brown (1) gelb gelb Connection of 2 to 4 like light barrier LB 2 LB 3 light barrier 1 LB 4 A B 2x 4K7 S1 T1 T2 A1 A2 A3 A4 A5 A6 A7 PE 24V 0V 24V~ start outputs Pow oer PE N L1 230V~ Fig. 1: Diagram of connections If any light barrier connections are not in use the plugs with the highest numbers have to stay vacant. The sequential switching must provie the restart lock an the start enable (T1, T2). The sequential switching schematic shoul be specifie in coorination with us. The plug connectors may only be manipulate when they are off-circuit. 6 Propose wiring iagrams for the sequential switching The contactors or relays actuate by the control unit must have positively riven contacts an be suitable for inustrial use. IMPORTANT: When using plug-in auxiliary contacts, the positively riven operation must also be available between the main contact set.. It must also be checke whether isconnection of the auxiliary block is etecte by the controller. No further work on the machine may be possible in such cases. The spark suppression must always be connecte via the contactor coil (by means of an RC element or varistor).

7 WN 304, WN 314 / page 7 of Propose wiring iagram for control unit WN 304, WN 314 to EN category 4 on power riven machinery (PDM) with start-up test an restart lock The control line for contactor A (terminals A1, A2), contactor B (terminals A5, A6) an the start enable (T1, T2) must be lai in separate cables if the control unit an the contactors are spatially separate. If both are locate in the control cabinet, stanar wiring is aequate. The user has to provie a max. 2 A fuse for current-limiting measures to protect the output signal switching evices (OSSD). We will be please to supply you with other propose wiring iagrams on inquiry. +24V max. 2A x y z A4 A1 A5 T1 T max. 2A max. 2A max. 2A WN 304 WN 314 a b a a a a A3 A7 reserve A2 A6 T2 c b c b c b c b c A B a b C D 0V c Fig. 2: Propose wiring iagrams for the sequential switching A, B, C an D = contactors or relays with positively riven contacts. T = operating evice (pushbutton) which has to be presse for start-up (release of the starting an the restart lockout). The ientifying marking of the pushbutton must be locate near this component. It must be impossible to press the pushbutton T from insie the anger area. x, y = Two-channel implementation in the controller of the PDM for interruption of the movement. Note: category 4 to EN z = Variant with only single-channel control of the PDM. Important: At maximum safety category 2 of EN is complie with in this case. Note: The eclaration of the safety category accoring to EN is only vali for the entirety of the shown elements. If aitional contacts are neee, they must be implemente accoring to the require safety category. 7 Applications an assembly instructions The safety light barriers (ESPE = Electro-Sensitive Protective Equipment) are use for the access protection of anger zones an safeguaring hazarous points on power-riven machinery in compliance with the safety engineering requirements as state in this escription, the stanar EN 999 an the type C stanars of the corresponing machinery. When the type C stanars contain etails for the use of safety light barriers, they shoul be followe in favor.

8 WN 304, WN 314 / page 8 of 14 Operation e.g. in the following areas of operation is possible: Operating machines for the chemicals, rubber an plastics inustries as efine by VBG 22 Printing an paper converting machinery as efine by pren 1010 Conveying equipment Power riven winows, oors an gates as efine by ZH 1/494 Storage facilities an equipment as efine by BGR 234 an EN Foo processing machines as efine by pren an/or VBG 77 Robots Textile machines as efine by VBG an DIN EN ISO Packaging machines as efine by as efine by DIN EN to -7 an/or VBG 76 The above iniviual applications were not an object of the EC type-test. 7.1 General The operating evice for start-up (pushbutton T) must be installe in such a way that a goo overview of the anger area is provie from its operating position. Actuation of the operating evice from insie the anger area must be exclue. The ESPE must be installe in such a way that the angerous points can only be reache through the guare area. 7.2 Access security of anger zones Two to four single beams are require for the access security of anger zones epening on the risk evaluation. The beams are only consiere to this extent that they are arrange parallel to the floor, an that the beam is interrupte by the boy of a person staning upright (not the intrusion of hans). receiver To secure the access of hazarous areas with 2 to 4 single light beams can not surely catch the intrusion of a boy or a part of a boy. Danger zone e.g. robot Note: All possibilities of access into the anger zone shoul be consiere in the risk evaluation. minimum istance S emitter Fig. 3 mirror The risk assessment consieration must also inclue methos that may be use to bypass the light barriers e.g.: Crawling uner the lowest beam (300 mm groun clearance is regare as secure) Reaching over the topmost beam Reaching between two beams Climbing between two beams Note: All foreseeable methos of access shoul be consiere in the risk assessment into account. The height of the single beams from a fitting with 2, 3 an four beams can be calculate with the accompanying table: The minimum istance between the safety area an hazarous area can not be reache until the hazarous process has finishe. no. of beams height form the ottom (mm) Table 8 accors to EN 999 section 6.1.4

9 WN 304, WN 314 / page 9 of 14 The application is permissible when the risk evaluation isplays that a etection of an introucing han has not, but the boy of a person staning upright has to be etecte. If the result of the risk evaluation is such that protective evices have to be use with several single beams, they must be positione at a istance obtaine using the formula below: S = K T + C S = Safety istance [mm] K = 1.6 m/s han-arm spee T = Stop time [ms] C = 850 mm Example: Access to a robot is protecte by 3 light beams at 300, 700 an 1100mm. The braking time of the robot is 100ms, the response time of the ESPE is 20ms S = K T + C = 1.6 m/s (100 ms + 20 ms) +850 mm S = 192 mm mm = 1042 mm The ESPE must be fixe in that way, that the hazarous area can only be reache through the safety area. Only one safety area can be establishe with the one to four single sensors. A safeguaring of several entrances to hazarous areas at power-riven machinery e.g. by splitting the sensors in several groups is not allowe. The stanar EN 999 has complex specifications for the safety istance. As far as there are type C stanars for the machine, these specifications must be implemente. 7.3 Safeguaring hazarous points by means of a light gri mae of single light beams Resolution For a light gri assembly the istance between the light beams P an the active light beam iameter (9.5 mm for light barriers in our small housing, 12 mm for our stanar type) must be ae, to guarantee a safe function. The resolution R for the lightgri arises from the formula: R = P +. receiver emitter P resolution R Fig. 4 of the active beam (single sensor) Example: 30 mm between the light beams lea to a EPSE resolution: R = 30 mm + 9,5 mm = 39,5 mm Height of guare area: The height of guare area (HGA) is calculate as illustrate here. The HGA is bigger than the scanne area A. It is calculate with: HGA = (N+1) x (R ) + P R P P Example: A light gri with N = 4 lines in stanar housing light barriers ( = 12 mm) an a resolution of R = 40 mm: A R P P HGA HGA=(4+1)x(40mm 12mm)+12mm HGA=5 x 28 mm +12 mm = 152 mm Fig. 5 R P

10 WN 304, WN 314 / page 10 of 14 Further example: A light gri with 3 small light barriers an a resolution R = 30 mm has a height of guare area of 91,5 mm. A light gri with 3 stanar light barriers an a resolution R = 40 mm has a height of guare area of 124 mm. Wier heights of guare area with single sensors are only possible with bigger resolution. Corresponingly the aition C to the safety istance increases an the use is limite to arm an boy protection. For arm protection the max. height of guare area at the use of 8 light beams is 554 mm or 534 mm for a resolution of 70 mm. On this occasion the aition C to the safety istance is always 850 mm. A possible introuction into the hazarous area form outsie the safety area must be prevente in every iniviual case by aitional measures (e.g. with covers). The mounting of the emitters an receivers, accoring to the calculate resolution an the calculate safety istance must be unchangeable. Require resolution for han protection: 30 mm. Require resolution for arm protection: 70 mm. A test ro with the iameter of the gri resolution shoul be introuce in the guare area of the running machine, to test the moe of operation of the shutown of the machine or installation. Accorant test ros can be orere from us. Safety istance An aequate safety istance between the guare area an the hazarous points must be provie, so that if the guare area is entere, the angerous movement is interrupte before the angerous points can be reache Extensive information concerning the safety istance is provie in the stanar EN 999. If type C stanars are alreay in existence for the machinery, the specifications of these stanars must be use. The subsequent shown formulas an emans are part of the stanar EN 999, chapter In general, the following applies for a normal approach to the guare area: S = K T + C S = Safety istance [mm] K = 2 m/s han-arm spee T = Stop time of machine an ESPE [ms] C = Allowance epening on the resolution The following applies for a resolution up to 40 mm: C = 8 (R 14 mm) R = Resolution of the ESPE in mm (as a gri system) C may be not less than 0 The calculation applies for all safety istances up to 500 mm. If S is < 100 mm, the minimum value S = 100 mm must still be complie with. If S is > 500 mm, K = 1.6 m/s may be use. In this case, S may not be less than 500 mm. In general, the following applies from a resolution of > 40 mm: C = 850 mm an K = 1.6 m/s If chilren are present (non inustrial area), the safety istance S must be increase by at least 75 mm. Example: A machine with a braking time of 100 ms is equippe with a light gri (ESPE) built with four light barriers in vertical orer. The resolution of the light gri is 30 mm an the response time of 20 ms (WN 304 or WN314). The maximum guare area is 112 mm. C = 8 (30 14 mm) = 128 mm S = 2 m/s (100 ms +20 ms) mm = 240 mm mm = 368 mm If a resolution of 40 mm is use in an otherwise ientical machine, a safety istance S = 2 m/s (100 ms +20 ms) mm = 448 mm results.

11 WN 304, WN 314 / page 11 of 14 The operating evice (pushbutton T) which has to be presse for start-up must be place at a position with a goo view over the hazarous area. Actuation of the operating evice from insie the anger area must be exclue. It must be impossible to press the pushbutton T from insie the anger area. If the ESPE is use as finger, han or arm protection, it must be mounte in such a way that the guare area cannot be reache over, reache uner, reache aroun or steppe behin. If this requirement cannot be met solely by the ESPE, aitional protective evices such as fixe covers must be provie. Information in the operating manual of the machine Maximum after-running time of the machine Safety istance S Guare area imensions (height max. with of guare area of the light barriers) Test ro iameter Reaction time T (stop time of machine an ESPE) Information on the machine: A goo reaable an urable label with the following minimum information shoul be place at the location of the emitters/ receivers. Manufacturer an type of the ESPE, serial number an year of construction Resolution in mm Response time of the ESPE in ms Height of guare area in mm (or visualization of the guare area) 7.4 Further applications In some prouct-specific stanars (type C stanars) safety light barriers are recommene to secure hazarous areas. The mounting recommenations given there shoul be followe. 7.5 Deflector mirror Special problems can be consiere with a reuce with of guare area by means of 1 or max. 2 eflector mirrors. 7.6 Optical bypassing: Reflective surface A ±2 A [mm] Fig. 6 D To prevent optical bypassing, a minimum istance A of the optical axis to reflective surfaces must be complie with. Rea off the value in the iagram (Fig. 6) for your istance D between the emitter an receiver to etermine the minimum istance A. 7.7 Mounting instruction The light barriers can be installe in any possible mounting position. For an easy installation of the emitters an receivers, use our mounting bracket W 115. The istance between each single line can be chosen arbitrarily, because the sensors o not influence each other. The evice has to be installe in a cabinet / control box an protecte that only authorize persons have access to the safety relevant moe switch (DIP switch). 100 D [m]

12 WN 304, WN 314 / page 12 of LED statuses LED statuses re yell grn Meaning Power ON, Initializing Normal moe, light barriers interrupte Light barriers reay for activation (external restart lock enable) Normal moe, light barriers active an free Error in system Power OFF require OSSD OFF OFF OFF ON OFF Table 9 on, off, blinking, error blinking 8 Commissioning an regular inspections The commissioning engineer must have all the requisite information on the machine an the mounte ESPE (here the safety light barriers incluing the control unit WN 304 or WN 314) available. The inspection must exten to the perfect interaction of the ESPE with the controller of the powerriven machinery an the setup in compliance with these safety regulations. An inspection must be carrie out by a qualifie person before the initial start-up of ESPE (The manufacturer of the press is also to be inclue for presses). Differences between commissioning an regular inspections: a) Inspection before the commissioning or after retooling or repair Before the initial start-up of the ESPE an after moifications of the ESPE or safety relevant components, an inspection must be carrie out by a authorize, qualifie person. These moifications are all changes to the switching, the control unit, the configuration, the parameterization an the programming of the ESPE an all components that are involve to the safety function of the ESPE. These inspections shoul secure that the requirements of a power-riven machinery using a ESPE are conforme. A faultless work with the components that participate the safety functions in coaction with the ESPE must be met. Furthermore the type of operation an the mounting of the ESPE must be inspecte. The manufacturer of the press is also to be inclue for presses. b) Regular inspections Regular inspections conuce to a systematic revealing an retraction of efects regaring technical safety (e.g. technical changes or manipulations) of the safety evices of the machines after the start-up. Accoring to 3 section 3 of the Orinance on inustrial safety an health type, scope an time intervals of the necessary inspections shall be etermine by the user with respect to work equipment. Besies, the employer shall etermine an efine the requirements to be satisfie by persons he shall esignate to carry out the inspections an inspections for work equipment. Accoring to the technical rules for inustrial safety an health (TRBS 1201) for presses a time interval as appropriate but of minimum one inspection per year has prove. Part of this inspection is, a security check of the faultless function of the ESPE, the conition of the evices, the aequate mounting of the ESPE an the coaction of ESPE with the press control unit Furthermore this also inclues a check as to whether the after-running of the machine is in the permissible range.

13 WN 304, WN 314 / page 13 of 14 For all inspections the official process specifications, type C stanars or rules an information of the responsible inspection authority for the respective machine/ equipment shall be consiere. The inspection results must be ocumente in a report, which must be signe by the inspector. The report must be kept at the site of installation of the power-riven machinery. 9 Dimensional rawings Fig. 7: emitter WS 50, WS 52, WS 501, WS 521 an receiver WE 50 un WE 52 partial view with plug M12 x 1. Fig. 8: emitter WS 51, WS 53, WS 511, WS 531 an receiver WE 51 an WE 53 partial view with plug M12 x 1. Fig. 9: control unit WN DIP S2 LS1 green yellow re label LS4 52 Snap-on part for TS mains 8 LS2 LS3 DIP S1 outputs 115 start

14 WN 304, WN 314 / page 14 of 14 Fig. 10: control unit WN PG 16 label PG for screws M4 reserve for PG 16 PG 16 PG 16 PG The right PG 16 screw joints (at the light barrier sie) have a insie sealing with four traverses with 4.5 mm. The left PG 16 screw joint has three traverses for power supply, output an test input with 6 mm.