Micro Detectors LS4 Series Manual 

CAT8ELS1251403 • 26/06/2018 1 English LS4 SAFETY LIGHT CURTAIN SUMMARY INTRODUCTION)..........................................................................................................................................)3! PRINCIPLE)OF)OPERATION).....................................................................................................................)4! INSTALLATION)............................................................................................................................................)5! Positioning)..............................................................................................................................................................)6! Master/Slave)Positioning)..................................................................................................................................)7! Calculation)of)safety)distance)...........................................................................................................................)8! Multiple)systems)...................................................................................................................................................)9! Use)of)deflecting)mirrors).................................................................................................................................)10! Distance)from)reflective)surfaces).................................................................................................................)11! Mechanical)assembly)and)optical)alignment)............................................................................................)12! Vertical)positioning)of)the)light)curtain)......................................................................................................)13! Models!with!14,!20mm!resolution!..............................................................................................................................!13! Models!with!30,!40mm!resolution!..............................................................................................................................!13! Models!with!50,!90mm!resolution!..............................................................................................................................!13! Multibeam!Models!..............................................................................................................................................................!14! Horizontal)positioning)of)the)light)curtain)................................................................................................)14! Electrical)connections).......................................................................................................................................)15! Layout!of!the!connectors!on!MASTER/SLAVE!light!curtain!.............................................................................!15! Emitter!connections!..........................................................................................................................................................!16! Receiver!connections!........................................................................................................................................................!17! Warnings!regarding!connection!cables!.....................................................................................................................!18! Configuration)and)operating)modes))(Master)Models)/)With)integrated)control)functions))...)19! Automatic!operation!..........................................................................................................................................................!19! Manual!operation!................................................................................................................................................................!19! Connection!of!external!contactors!K1!and!K2!........................................................................................................!20! Examples!of!connection!with!M.D.!safety!modules!..............................................................................................!21! OPERATION)AND)TECHNICAL)DATA).................................................................................................)24! Light)signals).........................................................................................................................................................)24! Emitter!light!signals!...........................................................................................................................................................!24! Receiver!light!signals!.........................................................................................................................................................!24! TEST)function).......................................................................................................................................................)25! Status)of)the)outputs)..........................................................................................................................................)25! Technical)specifications)...................................................................................................................................)26! Dimensions)...........................................................................................................................................................)31! CHECKOUTS)AND)MAINTENANCE)......................................................................................................)33! Functional)checks)...............................................................................................................................................)33! Troubleshooting).................................................................................................................................................)34! Accessories/Spares)............................................................................................................................................)36! GUARANTEE)..............................................................................................................................................)37!

2 CAT8ELS1251403 • 26/06/2018 English ABBREVIATIONS AND SYMBOLS USED IN THIS MANUAL FE = Functional earth (earth connection) M/S = Master/Slave System OSSD = Output Signal Switching Device = Light curtain’s solid state safety outputs TX = Safety light curtain emitter. RX = Safety light curtain receiver. Hand protection light curtains Arm and leg protection light curtains. Full body protection light grids. � This symbol indicates an important warning for personal safety. Failure to comply with this warning may result in high level risk for exposed personnel. è This symbol indicates an important warning.

CAT8ELS1251403 • 26/06/2018 3 English INTRODUCTION The LS4 light curtain is an optoelectronic safety device belonging to the category of Type 4 electro- sensitive protective equipment for the protection of personnel exposed to risks inherent in the use of hazardous machines or plants, complying with the EN 61496-1 and IEC 61496-2 standards. The LS4 is available in three different versions: 1. LS4 Type 4 light curtain consisting of Emitter plus Receiver with automatic reset. 2. LS4 (With integrated control functions) Type 4 light curtain consisting of Emitter plus Receiver with integration of additional functions such as control of feedback from any external contactors and management of manual/automatic operation. 3. LS4 (MASTER/SLAVE) Type 4 light curtain (with integrated control functions) comprising two (or three) TX/RX pairs (connected in series), one of which comprising the MASTER light curtain (with integrated functions) and one (or two) the SLAVE light curtain. A set of indicator leds on the Emitter and Receiver provide the information needed for a correct use of the device and for the assessment of any malfunction. The automatic fault sensing system permits independent detection by the LS4 light curtain of any dangerous fault in a time equal to the light curtain response time. � For any safety problem, if necessary, consult the safety authorities of the country of use or the competent industrial association. � For applications in the food industry, consult the manufacturer to verify compatibility of light curtain materials with the chemical agents used. � The protection capability of optoelectronic safety devices is not effective in cases in which: - The machine stopping device cannot be actuated electrically and it is not possible to stop all dangerous machine movements immediately and at any time during the operating cycle. - The hazardous condition is associated with the falling of objects from above or ejection of these from the machine. - Anomalous forms of light radiation are present (for example, use of cablelless control devices on cranes, radiation from weld spatter, etc). In this case additional measures may be necessary to ensure that the ESPE does not fail to danger.

4 CAT8ELS1251403 • 26/06/2018 English PRINCIPLE OF OPERATION If the protected area is clear, the two outputs on the Receiver are active and enable the machine to which they are connected to operate normally. Each time that an object bigger than or equal in size to the resolution of the system intercepts the optical path of one or more beams, the Receiver deactivates its own outputs. This condition enables hazardous machine movements to be stopped (by means of an adequate machine emergency stop circuit). è Resolution is the smallest sized object that, passing through the protected area, interrupts at least one of the beams generated by the light curtain (Figure 1), causing certain intervention of the device and consequent stopping of the hazardous movement of the machine. Figure 1 - Resolution Resolution remains constant regardless of working conditions as it depends only on the geometric characteristics of the mirrors and on the centre distance between two adjacent lenses. The height of the protected area is the effective height protected by the safety light curtain. If the curtain is positioned horizontally, this value indicates the depth of the protected area. The working range indicates how far the emitter and receiver can be separated and function properly. LS4 is available with the following resolutions: • 14mm (protected heights from 160mm to 1960mm): PROTECTION OF THE FINGERS. • 20mm (protected heights from 160mm to 1960mm): PROTECTION OF THE FINGERS. • 30mm (protected heights from 160mm to 2260mm): PROTECTION OF THE HANDS. • 40mm (protected heights from 310mm to 2260mm): PROTECTION OF THE HANDS. • 50mm and 90mm (protected heights from 310mm to 2260mm): PROTECTION OF THE LIMBS. The LS4 is also available in a Multibeam version with a distance between the mirrors of: • 500mm (2 beams), 400mm (3 beams), 300mm (4 beams). PROTECTION OF THE BODY. P = Pitch between two lenses D = Diameter of a lens R = Resolution = P+D P R D Receiver Emitter Beam

CAT8ELS1251403 • 26/06/2018 5 English INSTALLATION Before installing the LS4 safety system, check all the conditions listed below: � The level of protection of LS4 (Type 4, SIL3, SILCL3 PLe) must be compatible with the level of danger of the system to be protected. � The safety system is used only as a stopping device and not to control the machine. � The machine movement is actuated electrically. � All dangerous movements of the machine can be interrupted immediately. In particular, the machine stopping times must be known and, if necessary, measured. � The machine must not generate hazards due to projection or falling of materials from above; otherwise, additional mechanical guarding must be provided. � The smallest size object to be detected must be greater than or equal to the resolution of the selected model. Knowing the shape and dimensions of the dangerous area, it is possible to calculate the width and height of the related access area : � Compare these dimensions with the maximum working range and the height of the protected area of the model used. Before positioning the safety device, comply with the following general indications: � Check that the temperature of the environment in which the system is installed is compatible with the operating temperature parameters indicated on the product label and in the technical data. � Do not position the Emitter and the Receiver close to very bright or flashing sources of light. � Particular operating conditions may affect the sensing level of photo-electric devices. In environments characterised by fog, rain, fumes or dust, to always guarantee correct operation of the appliance, it is advisable to apply suitable correction factors Cf so as to maximum working range values. In these cases: where Pu and Pm are, respectively, the working and maximum range expressed in metres. The recommended correction factors CF are indicated in the table below. OPERATING CONDITIONS CORRECTION FACTOR Cf Fog 0.25 Vapours 0.50 Dust 0.50 Dense fumes 0.25 Table 1 – CF correction factors � If the device is installed in environments characterised by sudden changes in temperature, suitable precautions must be taken to prevent the formation of condensation on the mirrors, which could impair detection capability. Pu = Pm x Cf

6 CAT8ELS1251403 • 26/06/2018 English Positioning The Emitter LS4E and the Receiver LS4R must be positioned so that it is impossible to access the dangerous area from above, from below and from the sides without intercepting one of the beams. Useful indications for correct positioning of the light curtain are provided in the figure below. Incorrect positioning of the light curtain Correct positioning of the light curtain Figure 2 - Positioning

CAT8ELS1251403 • 26/06/2018 7 English Master/Slave Positioning In addition to standard models (that can be positioned either horizontally or vertically), LS4 can be purchased in a MASTER/SLAVE configuration. This configuration comprises two (or three) pairs of light curtains in which the two (or three) Emitters and the two (or three) Receivers are connected in series. Figure 3 – Examples of Master/Slave configurations The connection cable between the master and slave may be up to 50 metres in length. This characteristic permits configuration of an application with two light curtains positioned one at the front and one at the rear of the dangerous machine, with a single connection towards the machine power and control circuits (Figure 4). Figure 4 - Example of Master/Slave application with mechanical guards MASTER MASTER SLAVE SLAVE2 SLAVE

8 CAT8ELS1251403 • 26/06/2018 English Calculation of safety distance The light curtain must be positioned at a distance equal to or greater than the minimum safety distance S so that the dangerous point can be reached only after stopping the dangerous movement of the machine (Figure 5). According to the EN13855:2010 European standards, the minimum safety distance S must be calculated using the following formula : S = K (t1 + t2) + C C = 8 (d-14) where: S Minimum safety distance mm K Operator approach speed to the dangerous area mm/sec t1 Total response time of the light curtain, in seconds sec t2 Response time of the machine in seconds, i.e. the time taken by the machine to stop the dangerous movement from the moment in which the stop signal is transmitted sec C Additional distance that varies according to the application 1 mm d Resolution mm Table 2 – Safety distance � Failure to comply with the safety distance reduces or impairs the protection function of the light curtain. � If positioning of the light curtain does not prevent the operator from accessing the dangerous zone without being detected, additional mechanical guards must be installed. Figure 5 – Safety distance S 1 For further information on additional safety distance, refer to EN13855:2010. DANGEROUS ZONE

CAT8ELS1251403 • 26/06/2018 9 English Multiple systems When several LS4 are used, precautions must be taken to prevent optical interference between these: position the elements so that the beam of the Emitter of one system is received only by its respective Receiver. Figure 6 provides examples of correct positioning of two photo-electric systems. Incorrect positioning may cause interference, with possible malfunction of the system. Figure 6 – Multiple systems è This precaution is not necessary in the case of MASTER/SLAVE systems. Systems installed side by side: A Adjacent positioning of the two emitters Systems installed one above the other: B “L” installation: C Crossed positioning between emitters and receivers

10 CAT8ELS1251403 • 26/06/2018 English Use of deflecting mirrors For protection or control of areas accessible from several sides, one or more deflecting mirrors can be used in addition to the Emitter and Receiver. Deflecting mirrors make it possible to redirect the beams generated by the Emitter on several sides. Wishing to deflect the beams generated by the Emitter by 90°, the perpendicular to the surface of the mirrors must form an angle of 45° with the direction of the beams. An application in which two deflecting mirrors have been used for "U" shaped protection is illustrated in the figure below. Figure 7 – Deflecting mirrors When using deflecting mirrors, comply with the following rules: • Position the mirrors so as to comply with the minimum safety distance S (Figure 7) on each side of access to the dangerous area. • The working distance (working range) is given by the sum of the lengths of all the access sides to the protected area. (Note that the maximum working range between the Emitter and Receiver is reduced by 15% for each mirror used). • In the installation phase, take care to avoid twisting along the longitudinal axis of the mirror. • Standing close to and in axis the Receiver, check that the entire shape of the Emitter is visible on the first mirror. • It is advisable not to use more than three deflecting mirrors.

CAT8ELS1251403 • 26/06/2018 11 English Distance from reflective surfaces � The presence of reflective surfaces close to the light curtain may cause occasional reflections that prevent sensing. Referring to Figure 8, object A is not detected due to surface S that, reflecting the beam, closes the optical path between the Emitter and Receiver. Therefore, a minimum distance d must be maintained between any reflecting surfaces and the guarded area. We recommend calculating the minimum distance d using the values for Type 4 devices as set forth in IEC/EN 61496-2. Figure 8 - Reflective surfaces In Figure 9 these values are shown as a function of the distance l between the emitter and the receiver. Figure 9 - Minimum distance d After installing the system, check for any reflective surface that intercept the beams, first of all at the centre and then close to the Emitter and Receiver. During this procedure, the red led on the Receiver must never switch off. d l

12 CAT8ELS1251403 • 26/06/2018 English Mechanical assembly and optical alignment The Emitter and Receiver must be installed facing each other, at a distance equal to or less than that indicated in the technical data. Using the provided inserts and fastening brackets, place the Emitter and Receiver so that they are aligned and parallel to each other, and with the connectors facing the same side. Perfect alignment of the Emitter and Receiver is essential for efficient functioning of the light curtain; this operation is facilitated observing the indicator leds of the Emitter and of Receiver. Figure 10 – Mechanical assembly Figure 11 – Optical alignment • Position the optical axis of the first and last beam of the Emitter on the same axis as that of the corresponding beams on the Receiver. • Move the Emitter in order to locate the area within which the green led on the Receiver remains on, then position the first beam of the Emitter (that close to the indicator led) at the centre of this area. • Using this beam as pivot, with minor movements of the opposite end, establish the free protected area condition which, in this situation, will be indicated by lighting up of the green led on the Receiver. • Lock the Emitter and the Receiver in place. During these operations it may be useful to check the presence of the blue led weak signal (only for 14mm and H models) on the Receiver display. Upon completion of alignment, this LED must be off. è If the Emitter and Receiver are installed in areas subject to strong vibrations, vibration- damping supports must be used (for the order code, see the ACCESSORIES/SPARES paragraph) so as not to impair operation of the circuits.

CAT8ELS1251403 • 26/06/2018 13 English Vertical positioning of the light curtain Models with 14, 20mm resolution � These models are suitable for fingers detection. Models with 30, 40mm resolution � These models are suitable for hand detection. The minimum safety distance S is calculated according to the following formula: S = 2000 (t1 + t2) + 8(D-14) (D=resolution) This formula is valid for distances S between 100 and 500 mm. If, according to the calculation, S exceeds 500 mm, the distance can be reduced down to a minimum of 500 mm using the following formula: S = 1600 (t1 + t2) + 8(D-14) If, in view of the particular configuration of the machine, the dangerous zone can be reached from above, the highest beam of the light curtain must be at a height H (from resting surface G) whose value is determined by using the ISO 13855 Standard. G Figure 12 - Vertical positioning 14mm, 20mm, 30mm, 40mm Models with 50, 90mm resolution � These models are suitable for detecting the arm or the leg and must not be used to detect fingers or hands. The minimum safety distance S is determined according to the following formula: S = 1600 (t1 + t2) + 850 è In every case the height H of the highest beam from resting surface G must not be smaller than 900 mm, while the height of the lowest beam P must not be bigger than 300 mm (ISO 13855 Standard). G Figure 13 - 50mm, 90mm Light curtain point of danger direction of approach reference plane Light curtain point of danger direction of approach reference plane

14 CAT8ELS1251403 • 26/06/2018 English Multibeam Models � These models are suitable for whole body detection and must not be used to detect arms or legs. The minimum safety distance S is determined according to the following formula: S = 1600 (t1 + t2) + 850 The recommend height H from the reference surface G (ground) is as follows (ISO 13855 Standard) : G Figure 14 - Multibeam MODEL BEAMS Recommended height H (mm) LS4 2B LS4 3B LS4 4B 2 3 4 400 – 900 300 – 700 – 1100 300 – 600 – 900 - 1200 Table 3 - Height H of Multibeam models Horizontal positioning of the light curtain When the direction of approach of the body is parallel to the plane of the protected area, the light curtain must be positioned so that the distance between the far end of the dangerous area and the outermost beam is equal to or greater than the minimum safety distance S calculated as follows: S = 1600(t1 + t2) + 1200 – 0.4H where H is the height of the protected surface from the machine reference plane; H = 15(D-50) (D=resolution) In this case, H must always be less than of 1m (ISO 13855 Standard). G Figure 15 - Horizontal positioning Light grid point of danger direction of approach reference plane Light curtain point of danger direction of approach reference plane

CAT8ELS1251403 • 26/06/2018 15 English Electrical connections WARNINGS Before making electrical connections, make sure that the mains voltage matches the one indicated in the technical data. � The Emitter and Receiver must be powered at a 24Vdc±20% (PELV, in compliance with the standard EN 60204-1 (Chapter 6.4)). The electrical connections must be made according to the wiring diagrams provided in this manual. In particular, do not connect other devices to the connectors of the Emitter and Receiver. To guarantee reliable operation using a diode bridge power supply unit, its output capacity must be at least 2000µF for each A absorbed. Layout of the connectors on MASTER/SLAVE light curtain Figure 16 - Connector layout SLAVE primary connector SLAVE2 secondary connector SLAVE SLAVE 2 SLAVE2 primary connector MASTER secondary connector MASTER MASTER primary connector

16 CAT8ELS1251403 • 26/06/2018 English Emitter connections LS4E/**-***B - LS4E/**-*** (with integrated control functions) - LS4E/**-***M (MASTER models) M12 5-pin primary connectors. PIN COLOUR NAME TYPE DESCRIPTION 1 Brown 24VDC INPUT 24VDC power supply 2 White RANGE0 Light curtain configuration complying with the EN61131-2 standard (ref. Table 5) 3 Blue 0VDC 0VDC power supply 4 Black RANGE1 Light curtain configuration complying with the EN61131-2 standard (ref. Table 5) 5 Grey FE Ground connection Table 4 - M12, 5 pin Master/Standard/with integrated control functions TX RANGE AND TEST SELECTION - (PRIMARY CONNECTOR M12, 5 PIN) PIN 4 PIN 2 MEANING 24V 0V Selection HIGH Range 0V 24V Selection LOW Range 0V 0V Emitter in TEST 24V 24V Selection error Table 5 – Range and TEST selection è For correct operation of the light curtain, pins 2 and 4 of the Emitter must be connected as indicated in Table 5. LS4E/**-***F - LS4E/**-***S (SLAVE/SLAVE2 models) - M12, 5-pin primary connector. PIN COLOUR NAME DESCRIPTION 1 Brown 24VDC 24VDC power supply 2 White LINE_A Communication MASTER-SLAVE 3 Blue 0VDC 0VDC power supply 4 Black LINE_B Communication MASTER-SLAVE 5 Grey FE Ground connection Table 6 - M12, 5-pin Primary Slave TX LS4E/**-***M (MASTER models) – M12, 5-pin secondary connector. LS4E/**-***S (SLAVE2 models) – M12, 5-pin secondary connector. PIN COLOUR NAME DESCRIPTION 1 Brown 24VDC 24VDC power supply 2 White LINE_A Communication MASTER-SLAVE 3 Blue 0VDC 0VDC power supply 4 Black LINE_B Communication MASTER-SLAVE 5 Grey FE Ground connection Table 7 - M12, 5-pin Secondary TX

CAT8ELS1251403 • 26/06/2018 17 English Receiver connections LS4R/**-***B models - M12, 5-pin connector. PIN COLOUR NAME TYPE DESCRIPTION OPERATION 1 Brown 24VDC - 24VDC power supply - 2 White OSSD1 OUT Static safety output 1 PNP active high 3 Blue 0VDC - 0VDC power supply - 4 Black OSSD2 OUT Static safety output 2 PNP active high 5 Grey FE - Ground connection - Table 8 - M12, 5 pins Primary RX LS4R/**-*** (models with integrated control functions) - M12, 8-pin connector. LS4R/**-***M (MASTER models) - M12, 8-pin primary connector. PIN COLOUR NAME TYPE DESCRIPTION OPERATION 1 White OSSD1 OUTPUT Static safety output 1 PNP active high 2 Brown 24VDC - 24VDC power supply - 3 Green OSSD2 OUTPUT Static safety output 2 PNP active high 4 Yellow K1_K2/RESTART INPUT Feedback from external contactors Complying with the EN61131-2 standard (ref. Par. "Configuration and operating modes" page 19) 5 Grey SEL_A INPUT Light curtain configuration 6 Pink SEL_B INPUT 7 Blue 0VDC - 0VDC power supply - 8 Red FE - Ground connection - Table 9 - M12, 8 pins RX

18 CAT8ELS1251403 • 26/06/2018 English LS4R/**-***F - LS4R/**-***S (SLAVE/SLAVE2 models) - M12, 5-pin primary connectors. PIN COLOUR NAME DESCRIPTION 1 Brown 24VDC 24VDC power supply 2 White LINE_A Communication MASTER-SLAVE 3 Blue 0VDC 0VDC power supply 4 Black LINE_B Communication MASTER-SLAVE 5 Grey FE Ground connection Table 10 - M12, 5 pins Primary Slave RX LS4R/**-***M (MASTER models) - M12, 5-pin Secondary Connector. LS4R/**-***S (SLAVE2 models) - M12, 5-pin Secondary Connector. PIN COLOUR NAME DESCRIPTION 1 Brown 24VDC 24VDC power supply 2 White LINE_A Communication MASTER-SLAVE 3 Blue 0VDC 0VDC power supply 4 Black LINE_B Communication MASTER-SLAVE 5 Grey FE Ground connection Table 11 - M12, 5 pin Secondary RX Warnings regarding connection cables • For connections with a length of more than 50m, use cables having a cross-section of at least 1mm2. • It is good practice to keep the power supply of the light curtain separate from that of other electric power equipment (electric motors, inverters, frequency variators) or other sources of disturbance. • Connect the Emitter and Receiver to the ground outlet. • The connection cables must follow a different route from that of other power cables.

CAT8ELS1251403 • 26/06/2018 19 English Configuration and operating modes (Master Models / With integrated control functions) The operating mode of the LS4 light curtain is set by making suitable connections on the M12 – 8- pin connector of the Receiver (Table 12). CONNECTIONS OPERATING MODE K1_K2/restart (PIN 4) connected to : 24VDC SEL_A (PIN 5) connected to : 24VDC SEL_B (PIN 6) connected to : 0VDC AUTOMATIC (Figure 17) K1_K2/restart (PIN 4) connected to : 24VDC (via set of NC contacts of K1K2) SEL_A (PIN 5) connected to : 24VDC SEL_B (PIN 6) connected to : 0VDC AUTOMATIC with control K1K2 (Figure 18) K1_K2/restart (PIN 4) connected to : 24VDC (via RESTART button) SEL_A (PIN 5) connected to : 0VDC SEL_B (PIN 6) connected to : 24VDC MANUAL (Figure 19) K1_K2/restart (PIN 4) connected to : 24VDC (via RESTART button and set of NC contacts of K1K2) SEL_A (PIN 5) connected to : 0VDC SEL_B (PIN 6) connected to : 24VDC MANUAL with control K1K2 (Figure 20) Table 12 –Setting of manual/automatic mode Automatic operation � If the LS4 light curtain is used in AUTOMATIC mode, it will not be equipped with a start/restart interlock circuit. In most applications, this safety function is compulsory. Carefully assess the risks analysis of your own application. In this operating mode, the OSSD1 and OSSD2 safety outputs follow the status of the light curtain : • with guarded area free, the outputs are ON. • with guarded area occupied, they are OFF. Manual operation � Use in manual mode (start/restart interlock ON) is compulsory if the safety device controls an opening in order to protect a dangerous area and if a person, after passing through the opening, can remain in the dangerous area without being detected (use as 'trip device' according to IEC 61496). Failure to comply with this regulation may result in very serious hazards for the persons exposed. In this operating mode, the safety outputs OSSD1 and OSSD2 are activated in a condition of free protected area and after having received the RESTART signal via push-button or a specific command on the K1K2/RESTART input). Following occupation of the protected area, the outputs will be disabled. For re-activation, repeat the sequence described above. The RESTART command is active with transition 0Vdc -> 24Vdc -> 0Vdc. The duration of the command must be within 100ms and 5s. � The Restart command must be installed outside the danger area in a position where the danger area and the entire work area concerned are clearly visible. � It must not be possible to reach the control from inside the danger area.

20 CAT8ELS1251403 • 26/06/2018 English Connection of external contactors K1 and K2 In both operating modes, it is possible to activate control of the external contactors K1/K2 (series of contacts). If this control is to be used, it is necessary to connect pin 4 of the M12 8-pin connector of the Receiver with the power supply (24VDC) via a set of NC contacts (feedback) of the external contactors. � In the case of manual operation, the RESTART button in series with the NC contacts (feedback) of the external contactors K1/K2 (Figure 20) must also be present. � If the application requires it, the response time of the external contactors must be verified by an additional device. Figure 17 - Automatic Figure 18 – Automatic with K1K2 feedback Figure 19 - Manual Figure 20 – Manual with K1K2 feedback

CAT8ELS1251403 • 26/06/2018 21 English Examples of connection with M.D. safety modules Figure 21 - LS4 A: Manual operation with SB400 module Figure 22 - LS4: Automatic operation with SB300 module For correct operation of the light curtain, connect pins 2 and 4 of the Emitter as indicated in Table 4. For correct operation of the light curtain, connect pins 2 and 4 of the Emitter as indicated in Table 4.

22 CAT8ELS1251403 • 26/06/2018 English Figure 23 - LS4: Connection examples

CAT8ELS1251403 • 26/06/2018 23 English Figure 24 - LS4: Connection examples EMITTER RECEIVER FE (Grey) 0VDC (Blue) RANGE1 (Black) EMITTER 0VDC 5 4 3 0VDC (Blue) FE (Grey) 24VDC (Brown) RANGE0 (White) EMITTER HIGH RANGE RANGE0 (White) RANGE1 (Black) 24VDC (Brown) LOW RANGE +24VDC 2 1 5 0VDC +24VDC 1 4 3 2 0VDC (Blue) 24VDC (Brown) FE (Grey) OSSD2 (Black) RECEIVER OSSD1 (White) 0VDC 5 BARRIER OUTPUT 3 4 2 1 +24VDC 1 2 3 EMITTER --> SB400 OSSD1 (White) OSSD2 (Black) 24VDC (Brown) 0VDC (Blue) FE (Grey) 24VDC (Brown) 0VDC (Blue) OSSD2 (Black) OSSD1 (White) PE PE MANUALE 6 +24VDC OSSD2 (Black) OSSD1 (White) FE (Grey) 0VDC (Blue) 24VDC (Brown) 5 4 2 0VDC 1 3 RESTART 1 24VDC (Brown) FE (Grey) OSSD1 (White) OSSD2 (Black) 0VDC (Blue) 5 4 2 3 0VDC +24VDC MANUAL SB400 RESTART 4 AUTO 8 7 6 5 INPUT2 BARR INPUT1 BARR MAN +24Vdc 0Vdc 3 1 2 SYSTEM STATUS K1/K2 (FEEDBACK) N.C. N.C. 7 12 RELAY B RELAY A 16 15 14 13 11 9 10 N.C. SB400 8 INPUT2 BARR +24Vdc 0Vdc RESTART MAN AUTO 6 7 5 3 4 1 2 INPUT1 BARR K1/K2 (FEEDBACK) SYSTEM STATUS N.C. AUTOMATIC 16 RELAY A RELAY B 14 15 13 11 12 9 10 K1/K2 (FEEDBACK) MANUAL K1K2 PE MANUALE 2 4 5 FE (Grey) +24VDC 3 1 0VDC RESTART SB400 4 RESTART INPUT1 BARR AUTO MAN INPUT2 BARR 7 8 6 5 +24Vdc 0Vdc 2 3 1 SYSTEM STATUS K1/K2 (FEEDBACK) N.C. N.C. INPUT1 BARR INPUT2 BARR RESTART MAN AUTO 0Vdc +24Vdc AUTOMATIC K1K2 5 4 2 1 3 0VDC 8 PE 6 7 5 3 4 1 2 +24VDC SYSTEM STATUS K1/K2 (FEEDBACK) SB400 16 N.C. N.C. 14 15 13 L1 11 12 9 10 K1 EXTERNAL CONTACTS K1/K2 (FEEDBACK) 12 L1 15 16 14 13 K2 K1 K1-1 10 11 9 K2-1 K2 L2 K1 L2 K2 K1 K2 K1 EXTERNAL CONTACTS K2 RECEIVER 4 5 RECEIVER RECEIVER RECEIVER

24 CAT8ELS1251403 • 26/06/2018 English OPERATION AND TECHNICAL DATA Light signals The leds on the Emitter and Receiver light up according to system operating conditions. Refer to the tables below to identify the various indications (ref. Figure 25). EMITTER RECEIVER RECEIVER (H) Figure 25 - Light signals Emitter light signals MEANING THREE-COLOUR LED (Red/Green/Orange) System power-on. Initial TEST. RED System power-on. HIGH working range selected. 2 GREEN BLINKINGS FAIL condition (Table 19) RED BLINKING 2 TEST condition ORANGE Normal operating condition GREEN Table 13 – TX light signals Receiver light signals MEANING LED TWO-COLOUR (Red/Green) (2) YELLOW (1) System power-on. Initial TEST. RED ON BREAK condition (A) RED OFF GUARD condition (C) GREEN OFF FAIL condition (Table 19) RED BLINKING 2 OFF Table 14 – RX light signals LS4 A / LS4 Slave MEANING LED TWO-COLOUR (Red/Green) (2) YELLOW (1) System power-on. Initial TEST RED ON BREAK condition (A) RED OFF CLEAR condition (B) OFF ON GUARD condition (C) GREEN OFF BREAK_K condition (D) YELLOW BLINKING YELLOW BLINKING FAIL condition (Table 19) RED BLINKING 2 OFF Table 15 – RX light signals LS4 (With integrated control functions) 2 The type of fault is identified by the number of flashes (see Troubleshooting chapter) 1 2 3 4

CAT8ELS1251403 • 26/06/2018 25 English MEANING TWO-COLOUR (Red/Green) (4) TWO-COLOUR (Yellow/Blue) (3) System power-on. Initial TEST RED YELLOW BREAK condition (A) RED OFF CLEAR condition (B) OFF YELLOW GUARD condition (C) GREEN OFF BREAK_K condition (D) YELLOW BLINKING YELLOW BLINKING FAIL condition (Table 19) RED BLINKING 3 OFF GUARD condition with weak signal GREEN BLUE CLEAR condition with weak signal - YELLOW /BLUE alternating BREAK condition with weak signal RED BLUE BREAK_K condition with weak signal YELLOW YELLOW Alternatively blinking OFF BLUE Table 16 - RX light signals LS4 14mm and H (20m) MEANING LED TWO-COLOUR (Red/Green) (2) YELLOW (1) System power-on. Initial TEST RED ON BREAK condition (A) RED OFF CLEAR condition (B) OFF ON GUARD condition (C) GREEN OFF BREAK_K condition (D) YELLOW BLINKING YELLOW BLINKING FAIL condition (Table 19) RED BLINKING 4 OFF MASTER : Light curtain free; SLAVE : Light curtain(s) occupied RED Blinking Table 17 – RX light signals LS4 (Master) (A) Light curtain occupied - outputs disabled (B) Light curtain free - outputs disabled - awaiting restart (C) Light curtain free - outputs enabled (D) Light curtain free - outputs disabled - awaiting feedback K1_K2 OK TEST function The test function simulates the occupation of the protected area, allowing checking by an external supervisor (e.g. PLC, control module, etc.) of the correct operation of the entire system. Via an automatic fault detection system, the LS4 light curtain is able to verify occurrence of a fault independently within the response time (declared for each model). This fault detection system is always active and does not require any external intervention. The TEST command is available in the case in which the user wishes to check the devices connected downstream of the light curtain (without physically intervening inside the guarded area). This command interrupts emission of the beams on the emitter and makes it possible to switch the OSSD from ON to OFF status as long as the command is active. è The minimum duration of the TEST command must be at least 4 msec. Status of the outputs On the Receiver of the LS4 there are two PNP static outputs whose status depends on the condition of the protected area. • The maximum permissible load for each output is 400mA@24VDC, corresponding to a resistive load of 60Ω. • The maximum OFF-state voltage is < 0,5VDC. • The maximum output current in OFF-state (leakage current) is <2mA. • The maximum load capacity corresponds to 0.82µF@24VDC. The meaning of the status of the outputs is illustrated in the table below. Any short-circuit between the outputs or between the outputs and 24VDC or 0VDC power supply is detected by the light curtain. 3 The type of fault is identified by the number of flashes (see Troubleshooting chapter)

26 CAT8ELS1251403 • 26/06/2018 English SIGNAL NAME CONDITION MEANING OSSD1 24VDC Light curtain free condition. OSSD2 OSSD1 0VDC Light curtain occupied or fault detected condition OSSD2 Table 18 - Status of the outputs � In free protected area conditions, the Receiver provides a voltage of 24VDC on both outputs. Therefore, the established load must be connected between the output terminals and the 0VDC (Figure 26). Figure 26 – Correct load connection on the outputs Technical specifications TECHNICAL SPECIFICATIONS LS4 LIGHT CURTAINS Protected height mm 160 – 2260 Resolutions mm 14 - 20 - 30 – 40 - 50 - 90 No. of beams (Multibeam Models) 2/3/4 beams Working range (selectable) m 14mm Models 0 ÷ 3 (low) / 1 ÷ 6 (high) 30-40-50-90-Multibeam Models 0 ÷ 4 (low) / 0 ÷ 12 (high) 20-30-40-50-90-Multibeam Models H 0 ÷ 10 (low) / 3 ÷ 20 (high) Safety outputs 2 PNP – 400mA @ 24VDC Response time ms 2,5 ÷ 26,5 (see models tables) Power supply VDC 24 ± 20% Connections M12 (5/8 pin) connectors Max. length of connections m 100 (50 between Master and Slave) Operating temperature °C 14mm models and H models -20 ÷ 55°C Operating temperature °C 30-40-50-90-Multibeam models -30 ÷ 55°C Protection rating * IP 65 - IP 67 Section dimensions mm 2 28 x 30 Max. consumption W 1 (Emitter) 2 (Receiver) Light curtain lifetime 20 years Safety level Type 4 EN 61496-1:2013 IEC 61496-2:2013 SIL 3 IEC 61508-1: (ed.2) IEC 61508-2: (ed.2) IEC 61508-3: (ed.2) IEC 61508-4: (ed.2) SILCL 3 IEC 62061:2005/A2:2015 PL e - Category 4 EN ISO 13849-1:2015 *) Devices are not suitable for outdoor use without supplementary measures RECEIVER RECEIVER Max. load 400mA Max. load 400mA

CAT8ELS1251403 • 26/06/2018 27 English 14 mm Resolution Models 151 301 451 601 751 901 1051 1201 1351 1501 1651 1801 1951 Number of beams 15 30 45 60 75 90 105 120 135 150 165 180 195 Response time ms 4 5,5 7,5 9 11 13 14,5 16,5 18 20 22 23,5 25 Response time (Master + 1 slave) ms ttot = [0,06 * (Nrslave1 + Nrmaster ) + 0,9636] * 2 Response time (Master + 2 slaves) ms ttot = [0,06 * (Nrslave1 + Nrslave2 + Nrmaster ) + 1,0036] * 2 Protected height mm 160 310 460 610 760 910 1060 1210 1360 1510 1660 1810 1960 PFHd * 1,11E-08 1,24E-08 1,38E-08 1,51E-08 1,65E-08 1,78E-08 1,91E-08 2,04E-08 2,18E-08 2,31E-08 2,45E-08 2,57E-08 2,71E-08 DCavg # 95,7% 95,6% 95,5% 95,5% 95,4% 95,3% 95,3% 95,2% 95,2% 95,1% 95,1% 95,1% 95,1% MTTFd # years 529,1 476,4 431,5 395,8 364,3 338,5 315,2 295,8 277,8 262,6 248,3 236,1 224,5 CCF # 80% 30 mm Resolution Models 153 253 303 453 603 753 903 1053 1203 1353 1503 1653 1803 1953 2103 2253 Number of beams 8 13 16 23 31 38 46 53 61 68 76 83 91 98 106 113 Response time ms 4 5 5,5 7,5 9 10,5 12,5 14 15,5 17 19 20,5 22 23,5 25 26,5 Response time (Master + 1 slave) ms ttot = [0,11 * (Nrslave1 + Nrmaster ) + 0,9376] * 2 Response time (Master + 2 slaves) ms ttot = [0,11 * (Nrslave1 + Nrslave2 + Nrmaster ) + 1,0508] * 2 Protected height mm 160 260 310 460 610 760 910 1060 1210 1360 1510 1660 1810 1960 2110 2260 PFHd * 8,39E-09 9,37E-09 9,52E-09 1,08E-08 1,19E-08 1,32E-08 1,43E-08 1,56E-08 1,67E-08 1,80E-08 1,91E-08 2,04E-08 2,15E-08 2,28E-08 2,39E-08 2,51E-08 DCavg # 96,7% 96,9% 97,0% 97,2% 97,3% 97,4% 97,5% 97,6% 97,6% 97,7% 97,7% 97,7% 97,8% 97,8% 97,8% 97,8% MTTFd # years 516,1 419,9 403,5 328,5 278,9 240,9 213,1 190,2 172,5 157,1 144,8 133,8 124,8 116,6 109,7 103,3 CCF # 80% 40 mm Resolution Models 154 254 304 454 604 754 904 1054 1204 1354 1504 1654 1804 1954 2104 2254 Number of beams 6 9 11 16 21 26 31 36 41 46 51 56 61 66 71 76 Response time ms 3,5 4 4,5 5,5 7 8 9 10 11 12,5 13,5 14,5 15,5 16,5 17,5 18,5 Response time (Master + 1 slave) ms ttot = [0,11 * (Nrslave1 + Nrmaster ) + 0,9376] * 2 Response time (Master + 2 slaves) ms ttot = [0,11 * (Nrslave1 + Nrslave2 + Nrmaster ) + 1,0508] * 2 Protected height mm 160 260 310 460 610 760 910 1060 1210 1360 1510 1660 1810 1960 2110 2260 PFHd * 8,14E-09 9,05E-09 9,07E-09 9,89E-09 1,08E-08 1,16E-08 1,26E-08 1,34E-08 1,43E-08 1,52E-08 1,61E-08 1,69E-08 1,79E-08 1,87E-08 1,96E-08 2,04E-08 DCavg # 96,5% 96,7% 96,7% 97,0% 97,1% 97,2% 97,3% 97,4% 97,5% 97,5% 97,5% 97,6% 97,6% 97,6% 97,7% 97,7% MTTFd # years 570,6 465,5 463,3 391,5 337,8 298,0 265,9 240,6 219,2 201,7 186,4 173,6 162,2 152,4 143,5 135,8 CCF # 80% 50 mm Resolution Models 155 305 455 605 755 905 1055 1205 1355 1505 1655 1805 1955 2105 2255 Number of beams 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 Response time ms 3 4 4,5 5,5 6,5 7,5 8,5 9 10 11 12 13 14 15 16 Response time (Master + 1 slave) ms ttot = [0,11 * (Nrslave1 + Nrmaster ) + 0,9376] * 2 Response time (Master + 2 slaves) ms ttot = [0,11 * (Nrslave1 + Nrslave2 + Nrmaster ) + 1,0508] * 2 Protected height mm 160 310 460 610 760 910 1060 1210 1360 1510 1660 1810 1960 2110 2260 PFHd * 7,83E-09 8,46E-09 9,15E-09 9,78E-09 1,05E-08 1,11E-08 1,18E-08 1,24E-08 1,31E-08 1,37E-08 1,44E-08 1,51E-08 1,57E-08 1,64E-08 1,71E-08 DCavg # 96,5% 96,8% 96,9% 97,1% 97,2% 97,3% 97,4% 97,5% 97,5% 97,6% 97,6% 97,6% 97,6% 97,7% 97,7% MTTFd # years 594,5 497,2 432,2 378,4 339,5 305,4 279,6 256,0 237,6 220,4 206,6 193,5 182,8 172,4 163,8 CCF # 80% WITH: Nrslave1 = number of beams of slave1 Nrslave2 = number of beams of slave2 Nrmaster = number of beams of master * IEC 61508 # ISO 13849-1 ttot = total response time

28 CAT8ELS1251403 • 26/06/2018 English 90 mm Resolution Models 309 459 609 759 909 1059 1209 1359 1509 1659 1809 1959 2109 2259 Number of beams 4 6 8 10 12 14 16 18 20 22 24 26 28 30 Response time 3 3,5 4 4,5 5 5,5 5,5 6 6,5 7 7,5 8 8,5 9 Response time (Master + 1 slave) ms ttot = [0,11 * (Nrslave1 + Nrmaster ) + 0,9376] * 2 Response time (Master + 2 slaves) ms ttot = [0,11 * (Nrslave1 + Nrslave2 + Nrmaster ) + 1,0508] * 2 Protected height mm 310 460 610 760 910 1060 1210 1360 1510 1660 1810 1960 2110 2260 PFHd * 8,09E-09 8,63E-09 9,08E-09 9,62E-09 1,01E-08 1,06E-08 1,11E-08 1,16E-08 1,20E-08 1,26E-08 1,30E-08 1,36E-08 1,40E-08 1,46E-08 DCavg # 96,5% 96,6% 96,7% 96,8% 96,9% 96,9% 97,0% 97,1% 97,1% 97,1% 97,2% 97,2% 97,2% 97,3% MTTFd # years 574,4 514,4 467,8 427,2 394,5 365,3 341,1 319,0 300,5 283,2 268,5 254,6 242,6 231,2 CCF # 80% Multibeam Models 2B 3B 4B Number of beams 2 3 4 Distance between the beams mm 500 400 300 Response time ms 2,5 3 3 Response time (Master +1 slave) ms ttot = [0,11 * (Nrslave1 + Nrmaster ) + 0,9376] * 2 Response time (Master + 2 slaves) ms ttot = [0,11 * (Nrslave1 + Nrslave2 + Nrmaster ) + 1,0508] * 2 PFHd * 8,19E-09 8,85E-09 9,51E-09 DCavg # 96,2% 96,2% 96,1% MTTFd # years 607,3 560,5 520,4 CCF # 80% WITH: Nrslave1 = number of beams of slave1 Nrslave2 = number of beams of slave2 Nrmaster = number of beams of master * IEC 61508 # ISO 13849-1 ttot = total response time

CAT8ELS1251403 • 26/06/2018 29 English 20m MODELS 20 mm Resolution Models H 152 302 452 602 752 902 1052 1202 1352 1502 1652 1802 1952 Number of beams 15 30 45 60 75 90 105 120 135 150 165 180 195 Response time ms 4 5,5 7,5 9 11 13 14,5 16,5 18 20 22 23,5 25 Response time (Master + 1 slave) ms ttot = [0,06 * (Nrslave1 + Nrmaster ) + 0,9636] * 2 Response time (Master + 2 slaves) ms ttot = [0,06 * (Nrslave1 + Nrslave2 + Nrmaster ) + 1,0036] * 2 Protected height mm 160 310 460 610 760 910 1060 1210 1360 1510 1660 1810 1960 PFHd * 1,11E-08 1,24E-08 1,38E-08 1,51E-08 1,65E-08 1,78E-08 1,91E-08 2,04E-08 2,18E-08 2,31E-08 2,45E-08 2,57E-08 2,71E-08 DCavg # 95,7% 95,6% 95,5% 95,5% 95,4% 95,3% 95,3% 95,2% 95,2% 95,1% 95,1% 95,1% 95,1% MTTFd # years 529,1 476,4 431,5 395,8 364,3 338,5 315,2 295,8 277,8 262,6 248,3 236,1 224,5 CCF # 80% 30 mm Resolution Models H 153 303 453 603 753 903 1053 1203 1353 1503 1653 1803 1953 2103 2253 Number of beams 8 16 23 31 38 46 53 61 68 76 83 91 98 106 113 Response time ms 3 4 5 6 6,5 7,5 8,5 9,5 10 11 12 13 14 14,5 15,5 Response time (Master + 1 slave) ms ttot = [0,06 * (Nrslave1 + Nrmaster ) + 0,9636] * 2 Response time (Master + 2 slaves) ms ttot = [0,06 * (Nrslave1 + Nrslave2 + Nrmaster ) + 1,0036] * 2 Protected height mm 160 310 460 610 760 910 1060 1210 1360 1510 1660 1810 1960 2110 2260 PFHd * 1,05E-08 1,11E-08 1,19E-08 1,25E-08 1,33E-08 1,39E-08 1,46E-08 1,53E-08 1,60E-08 1,67E-08 1,74E-08 1,80E-08 1,88E-08 1,94E-08 2,02E-08 DCavg # 95,8% 95,8% 95,7% 95,6% 95,6% 95,5% 95,5% 95,4% 95,4% 95,4% 95,3% 95,3% 95,2% 95,2% 95,2% MTTFd # years 558,9 527,5 498,3 473,1 449,5 428,9 409,4 392,3 375,9 361,4 347,5 335,0 323,0 312,3 301,8 CCF # 80% 40 mm Resolution Models H 154 304 454 604 754 904 1054 1204 1354 1504 1654 1804 1954 2104 2254 Number of beams 6 11 16 21 26 31 36 41 46 51 56 61 66 72 78 Response time ms 3 3,5 4 4,5 5 6 6,5 7 7,5 8 8,5 9,5 10 10,5 11 Response time (Master + 1 slave) ms ttot = [0,06 * (Nrslave1 + Nrmaster ) + 0,9636] * 2 Response time (Master + 2 slaves) ms ttot = [0,06 * (Nrslave1 + Nrslave2 + Nrmaster ) + 1,0036] * 2 Protected height mm 160 310 460 610 760 910 1060 1210 1360 1510 1660 1810 1960 2110 2260 PFHd * 1,04E-08 1,10E-08 1,15E-08 1,20E-08 1,25E-08 1,30E-08 1,35E-08 1,41E-08 1,45E-08 1,51E-08 1,55E-08 1,61E-08 1,65E-08 1,71E-08 1,76E-08 DCavg # 95,8% 95,7% 95,7% 95,6% 95,6% 95,5% 95,5% 95,4% 95,4% 95,3% 95,3% 95,3% 95,3% 95,2% 95,2% MTTFd # years 567,2 539,8 521,7 498,5 483,0 463,0 449,6 432,2 420,5 405,3 395,0 381,5 372,4 360,4 352,2 CCF # 80% WITH: Nrslave1 = number of beams of slave1 Nrslave2 = number of beams of slave2 Nrmaster = number of beams of master * IEC 61508 # ISO 13849-1 ttot = total response time

30 CAT8ELS1251403 • 26/06/2018 English 50 mm Resolution Models H 155 305 455 605 755 905 1055 1205 1355 1505 1655 1805 1955 2105 2255 Number of beams 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 Response time ms 2,5 3 3,5 4 4,5 5 5,5 6 6,5 7 7 8 8 9 9 Response time (Master + 1 slave) ms ttot = [0,06 * (Nrslave1 + Nrmaster ) + 0,9636] * 2 Response time (Master + 2 slaves) ms ttot = [0,06 * (Nrslave1 + Nrslave2 + Nrmaster ) + 1,0036] * 2 Protected height mm 160 310 460 610 760 910 1060 1210 1360 1510 1660 1810 1960 2110 2260 PFHd * 1,02E-08 1,05E-08 1,09E-08 1,12E-08 1,16E-08 1,20E-08 1,24E-08 1,27E-08 1,31E-08 1,34E-08 1,38E-08 1,41E-08 1,46E-08 1,49E-08 1,53E-08 DCavg # 95,9% 95,8% 95,8% 95,7% 95,7% 95,7% 95,6% 95,6% 95,6% 95,5% 95,5% 95,5% 95,5% 95,4% 95,4% MTTFd # years 576,7 559,5 540,6 525,5 508,8 495,4 480,5 468,5 455,2 444,5 432,5 422,7 411,8 403,0 393,1 CCF # 80% 90 mm Resolution Models H 309 459 609 759 909 1059 1209 1359 1509 1659 1809 1959 2109 2259 Number of beams 4 6 8 10 12 14 16 18 20 22 24 26 28 30 Response time ms 2,5 3 3 3,5 3,5 3,5 4 4 4,5 4,5 5 5,5 6 6 Response time (Master + 1 slave) ms ttot = [0,06 * (Nrslave1 + Nrmaster ) + 0,9636] * 2 Response time (Master + 2 slaves) ms ttot = [0,06 * (Nrslave1 + Nrslave2 + Nrmaster ) + 1,0036] * 2 Protected height mm 310 460 610 760 910 1060 1210 1360 1510 1660 1810 1960 2110 2260 PFHd * 1,04E-08 1,08E-08 1,10E-08 1,14E-08 1,16E-08 1,20E-08 1,23E-08 1,26E-08 1,29E-08 1,33E-08 1,35E-08 1,39E-08 1,42E-08 1,45E-08 DCavg # 95,8% 95,7% 95,7% 95,6% 95,6% 95,5% 95,5% 95,4% 95,4% 95,3% 95,3% 95,3% 95,2% 95,2% MTTFd # years 570,6 556,3 545,4 532,3 522,4 510,3 501,2 490,1 481,6 471,4 463,5 454,1 446,8 438,0 CCF # 80% Multibeam H Models 2B 3B 4B Number of beams 2 3 4 Distance betweenthe beams mm 500 400 300 Response time ms 2,5 2,5 2,5 Response time (Master +1 slave) ms ttot = [0,06 * (Nrslave1 + Nrmaster ) + 0,9836] * 2 Response time (Master + 2 slaves) ms ttot = [0,06 * (Nrslave1 + Nrslave2 + Nrmaster ) + 1,0336] * 2 PFHd * 1,10E-08 1,15E-08 1,21E-08 DCavg # 95,6% 95,5% 95,4% MTTFd # years 561,0 538,8 518,4 CCF # 80% WITH: Nrslave1 = number of beams of slave1 Nrslave2 = number of beams of slave2 Nrmaster = number of beams of master * IEC 61508 # ISO 13849-1 ttot = total response time

CAT8ELS1251403 • 26/06/2018 31 English Dimensions LS4ER/**-***B - LS4ER/**-*** - LS4ER/**-***F (Emitter and Receiver) LS4ER/**-***M – LS4ER/**-***S (Emitter and Receiver) Figure 27 - Emitter and Receiver Height Model 150 250 300 450 600 750 900 1050 1200 1350 1500 1650 1800 1950 2100 2250 A (Standard/Slave) 213 313 363 513 663 813 963 1113 1263 1413 1563 1713 1863 2013 2163 2313 A (Master/Slave2) 236 - 386 536 686 836 986 1136 1286 1436 1586 1736 1886 2036 2186 2336 B 150 250 300 450 600 750 900 1050 1200 1350 1500 1650 1800 1950 2100 2250 Fastening 2 LE TYPE brackets with 2 inserts 3 LE TYPE brackets with 3 inserts Height Model 2B 3B 4B A (Standard/Slave) 653 953 1053 A (Master/Slave2) 677 977 1077 B 590 890 990 Fastening 2 LE TYPE brackets with 2 inserts Figure 28 - inserts and ST204 fastening brackets (provided)

32 CAT8ELS1251403 • 26/06/2018 English Figure 29 - Fastening brackets ST206 Figure 30 - Fastening brackets ST207S Figure 31 - Deflection mirrors Figure 32 - Fastening brackets for mirrors Model H SP100S 250 SP300S 400 SP400S 540 SP600S 715 SP700S 885 SP900S 1060 SP1100S 1230 SP1200S 1400 SP1300S 1450 SP1500S 1600 SP1600S 1750 SP1800S 1900 M8 Inserts

CAT8ELS1251403 • 26/06/2018 33 English CHECKOUTS AND MAINTENANCE Functional checks � Functional checks should be carried out on a frequent (e.g. daily) basis, depending on the risk. To perform a functional check follow the method below which uses a test object. � The correct test object must be used for the test, depending on light curtain resolution. Refer to the Accessories/Spares chapter (page 36) for the correct ordering code. Referring to Figure 33: • Insert the test object in the protected area and move it slowly up and down, first at the centre and then close to both the Emitter and Receiver. • For Multibeam models: using an opaque object, interrupt the beams one by one, first of all at the centre and then close to the Emitter and Receiver. • Check that, in each phase of test object movement, the red led on the Receiver always remains ON. Figure 33 – Efficiency check The LS4 light curtain does not require any specific maintenance; however, it is good practice to clean the front protective surfaces of the mirrors of the Emitter and Receiver. Clean with a damp cloth; in very dusty environments, after cleaning the front surface, spray with an anti-stat product. Never use abrasive or corrosive products, solvents or alcohol that could damage the part to be cleaned or wool cloths in order to prevent electrifying the front surface. � Even very fine scratching of the front plastic surfaces may increase the width of the beam emitted by the light curtain, thereby impairing its efficiency in the presence of reflecting side surfaces. � Therefore, during cleaning, it is essential to dedicate particular attention to the front window of the light curtain, in particular in environments characterised by abrasive powders (e.g. cement works etc).

34 CAT8ELS1251403 • 26/06/2018 English Troubleshooting The indications provided by the leds on the Emitter and Receiver make it possible to trace the cause of any system malfunction. As indicated in the “LIGHT SIGNALS” paragraph of this manual, in the case of a fault, the system switches to stop status and the leds of each unit indicate the type of fault that has occurred. (See the tables below). The numbers of the leds are referred to Figure 25. EMITTER MEANING THREE-COLOUR LED (Red/Green/Orange) REMEDY Irregular connection of pins 2 and 4 RED 2 consecutive flashes - Check connections of pins 2 & 4. Internal failure RED 3/4 consecutive flashes - Send to M.D. for repair. Master and slave not compatible RED 5 consecutive flashes - Check model compatibility Awaiting communication Master/Slave 4 ORANGE Flashing - Check condition of the Master. - If in FAIL condition, check the type of fault. - If the fault persists, send the device to M.D. laboratories for repair. Loss of Master/Slave communication 5 ORANGE 2 consecutive flashes - Check Master/Slave connections. - Reset of the system. - If the fault persists, send Master and Slave to M.D. laboratories for repair RECEIVER MEANING TWO-COLOUR (Red/Green) REMEDY Incorrect configuration RED 2 consecutive flashes - Check connections. Interfering emitter detected RED 4 consecutive flashes Carefully locate the interfering Emitter and take action in one of the following ways: - Reduce the range of the interfering Emitter from High to Low - Swap over the position of Emitter and Receiver - Move the interfering Emitter so that it does not illuminate the Receiver - Shield the beams emitted by the interfering Emitter using opaque protections OSSD outputs error RED 5 consecutive flashes - Check connections. - If the fault persists, send to M.D. for repair. Internal failure RED 6/7 consecutive flashes - Send the device to M.D. laboratories for repair Incorrect Master/Slave connections 6 RED 8 consecutive flashes - Check Master/Slave connections - If the fault persists, send the device to M.D. laboratories for repair. Table 19 - Troubleshooting In any case, if a system stoppage occurs, switch the system off and on again to check whether the incorrect behaviour of the system is to be ascribed to transitory electromagnetic disturbances. If the malfunction persists: • Check that electrical connections are correct and undamaged; • Check that supply voltage levels comply with those indicated in the technical data. 4 Indication present only on Slave light curtains 5 Indication present only on Master and Slave light curtains 6 Indication present only on Master and Slave2 light curtain

CAT8ELS1251403 • 26/06/2018 35 English • Check that the Emitter and the Receiver are correctly aligned and that front surfaces are perfectly clean. • It is advisable to keep the power supply of the light curtain separate from that of other electric power equipments (electric motors, inverters, frequency variators) or other sources of disturbance. � If it is not possible to trace the cause of the malfunction and eliminate this, stop the machine and contact the M.D. assistance service. If the checks suggested are not sufficient to restore the correct operation of the system, please send the device, with all its parts, to the M.D. laboratories, clearly indicating: • product code number (P/N field shown in the product label); • serial number (S/N field shown in the product label); • date of purchase; • period of operation; • type of application; • detected fault.

36 CAT8ELS1251403 • 26/06/2018 English Accessories/Spares MODEL ITEM SB 400 SB400 safety module SB 400 M SB400M safety module with muting function CD12M/0H-050A3 Straight M12 5-pin female connector with 5-m cable CD12M/0H-050C3 90° M12 5-pin female connector with 5-m cable CD12M/0H-150A3 Straight M12 5-pin female connector with 15-m cable CD12M/0H-150C3 90° M12 5-pin female connector with 15-m cable CD12M/0E-050A1 Straight M12 8-pin female connector with 5m cable CD12M/0E-100A1 Straight M12 8-pin female connector with 10m cable CD12M/0E-150A1 Straight M12 8-pin female connector with 15m cable CD12M/0E-050C1 90° M12 8-pin female connector with 5m cable CD12M/0E-100C1 90° M12 8-pin female connector with 10m cable CD12M/0E-150C1 0.3m cable with 2 straight M12 5-pin female connectors CDP12/0H-003AC 3m cable with 2 straight M12 5-pin female connectors CDP12/0H-030AC 5m cable with 2 straight M12 5-pin female connectors CDP12/0H-050AC 10m cable with 2 straight M12 5-pin female connectors CDP12/0H-100AC Test rod diameter 30mm ST 2230 Test rod diameter 40mm ST 2240 Test rod diameter 50mm ST 2250 Set of 4 fastening accessories (brackets, inserts and bolts) for models up to 1050 ST 204 4S Set of 6 fastening accessories(brackets, inserts and bolts) for models from 1200 ST 204 6S Set of 4 vibration-damping supports (for models h=150) ST 4V S Set of 8 vibration-damping supports (for models h=300÷1050) ST 8V S Set of 12 vibration-damping supports (for models h=1200÷1500)

CAT8ELS1251403 • 26/06/2018 37 English GUARANTEE All new LS4 systems are guaranteed by M.D. for a period of 12 (twelve) months under normal working conditions, against defects due to faulty materials and workmanship. During the aforesaid period, M.D. promises to replace faulty parts free of charge. This guarantee covers both material and labour. M.D. reserves the right to decide whether to repair equipment or replace it with equipment of the same type or having the same characteristics. The validity of this guarantee is subject to the following conditions: • The user must notify M.D. of the fault within twelve months following the date of delivery of the product. • The equipment and all parts thereof must be in the condition in which they were supplied by M.D.. • The defect or malfunction must not arise directly or indirectly from: - Improper use - Non-observance of the instructions for use; - Negligence, inexperience, improper maintenance; - Repairs, modifications and adjustments carried out by personnel not authorised by M.D., tampering, etc.; - Accidents or collisions (also during transportation or due to acts of God); - Other reasons for which M.D. cannot be held responsible. Repairs will be carried out at M.D.’s laboratories, to which the material must be consigned or forwarded: transport costs and any damage or loss of material during transportation will be charged to the Customer. All replaced products and parts are property of M.D.. M.D. does not recognise any other form of guarantee or rights other than those expressly stated above; no requests for compensation for damages incurred for costs, suspension of activities or any other events or circumstances related in any way to malfunctioning of the product or any parts thereof will be taken into consideration. Do not dispose of WEEE as mixed urban waste, arrange separate collection. Contact the appropriate authorized collection points or the manufacturer. (2012/19/UE) Precise, complete compliance with all the indications and warnings indicated in this manual is essential for correct operation of the light curtain. Therefore, M.D. Micro Detectors S.p.A. declines any responsibility for defects caused by even partial non-compliance with such indications. Characteristics liable to modifications without prior notice. • Complete or partial reproduction is forbidden without M.D.’s prior authorisation.