HCS2 Series Instruction Manual
Contents
1. SENSORS HSC2 SERIES Category 2 Safety Light Curtains INSTRUCTION MANUAL electronics 8651 Buffalo Avenue Niagara Falls NY 14304 Phone 800 644 1756 Fax 888 283 2127 http www htm sensors com e mail service htmsensors com HTM electronics reserves the right to make modifications and improvements without prior notification HSC2 INSTRUCTION MANUAL 10 11 12 13 14 15 INDEX GENERAL INFORMATION sesine manken a am e G l 4 1 1 General descriptionofthesafetyli hticurtains 4 1 13 Package esasi S el imei giyin tadili gile otla 5 1 2 NewfeaturescomparedtothesF2Series 5 1 2 Gk cl Amini m Tm eklemeli i 6 lt gt SL AY ev 6 1 52 G mirolied 7 1 3 8 Minimum installation distance 8 14 alindi 11 1 5 Salety l or T m 13 INSTALLATION aly 14 2 1 Precautions to be observed for the choice and installation of the device 14 2 2 General information on device positioning 15 2 2 1 Minimumi2. o Hscesoyo fe M s0 Prob of danger failure hour Mean Time to Dangerous N ISO 13849 1 EN 954 1 EN IEC 61508 EN IEC 62061 Life span Failure Average Diagnostic Coverage Safe Failure Fraction Hardware Fault Tolerance ree ele te mo HSC2 30 06 4 2 2 1 04E 08 1 04 08 20 273 97 50 50 98 40 ao EEE 8 scan fe meal i eco fs meal i HSC23096 2 2 2 z Jansen aon HSC2a042 2 2 2 o Jansen onam 0 mee x e meme HSC23054 2 Jansen eman o ipee elele em we e mem 5 NC ___ 5 2 7 922 41 HSC2 INSTRUCTION MANUAL 12 OVERALL DIMENSIONS 42 12 5 O16 O16 12 50 5 L2 L1 MODEL L4 gt HSC2 30 12 HSC2 30 18 HSC2 30 24 HSC2 30 30 HSC2 30 36 HSC2 30 48 HSC2 30 54 HSC2 30 60 HSC2 30 65 HSC2 INSTRUCTION MANUAL 13 OUTFIT Angled fixing bracket L pus 74 pA P 25 15 00 gt MAC N
3. ses wo Msc23024 Wo _ Msc23036 se Mo mez 23 HSC2 INSTRUCTION MANUAL 4 ELECTRICAL CONNECTIONS All electrical connections to the emitting and receiving units are made through a male M12 connector located on the lower part of the two units For receiver a M12 5 pole connector is used while for emitter a M12 4 pole connector is used RECEIVER RX 05501 OV 1 brown 24 VDC 2 white OSSD 1 blue 0 4 05502 5 grey TEST RESET EMITTER TX NOT USED 24 VDC 1 OV 2 A NOT USED 1 brown 424 VDC 2 white NOT USED 3 blue 0 4 black NOT USED 24 HSC2 INSTRUCTION MANUAL 4 1 NOTES CONNECTIONS For the correct functioning of the HSC2 safety light curtains the following precautions regarding the electrical connections have to be respected e Do not place connection cables in contact with or near high voltage cables and or cable undergoing high current variations e g motor power supplies inverters etc e Do not connect in the same multi pole cable the OSSD wires of different light curtains e The TEST RESET wire must be connected through a N O button to the supply voltage of the ESPE The TEST RESET button must be located in such a way that the operator can check the protected area during any Test
4. i 43 13 1 ANGLED FIXING BRACKET MOUNTING MOUNTING A Antivibration support 6 pc kit Orientable supports 4 pc kit ST K6OR Orientable supports 6 pc kit 44 HSC2 INSTRUCTION MANUAL MOUNTING B HSC2 INSTRUCTION MANUAL 14 ACCESSOR ES 14 1 ROTATING FIXING BRACKET MODEL DESCRIPTION ST K4ROT Rotating fixing bracket 4 pc kit 45 HSC2 INSTRUCTION MANUAL 14 2 CONNECTION CABLES MODEL DESCRIPTION 46 HSC2 INSTRUCTION MANUAL 14 3 LASER POINTER The laser pointer represents a valid alignment and installation support for the HSC safety light curtain series The pointer can be moved along the light curtain profile to verify the complete device alignment top and bottom tan m MODEL DESCRIPTION 47 HSC2 INSTRUCTION MANUAL 15 GLOSSARY OPTOELECTRONIC PROTECTIVE DEVICE AOPD its detection function is achieved thanks to the use of optoelectronic receivers and emitters detecting the optical beams interruptions inside the device caused by an opaque object present inside the specified detecting area An active optoelectronic protective device AOPD can operate both in emitter receiver mode and in retro reflective light curtains BLOCK CONDITION BREAK status of the light curtain taking place when a suitably sized opaque object see DETECTING CAPACITY interrupts one or several light curtain beams Under these conditio
5. 2 2 6 Controls after first installation The control operations to carry out after the first installation and before machine start up are listed hereinafter The controls must be carried out by qualified personnel either directly or under the strict supervision of the person in charge of machinery Safety Verify that ESPE remains blocked 1 intercepting the beams along the protected area using the specific test piece following the Fig 12 scheme TP30 for light curtains with 30 mm resolution HSC2 30 XX _ O 1 r 7 Fig 12 ESPE has to be correctly aligned press slightly on the product side in both directions the red LED must not turn ZIP I The activation of the TEST function causes the opening of the OSSD outputs red LED on and controlled machine stop The response time at machine STOP including the ESPE and machine response times must be included in the limits defined in the calculation of the safety distance refer to section 2 Installation modes The safety distance between the dangerous parts and ESPE must comply with the requirements indicated in section 2 nstallation modes A person must not access or remain between ESPE and the dangerous parts of the machine Access to the dangerous areas of the machine must not be possible from any unprotected area ESPE must not be disturbed by external light sources ensuring that it remains
6. Ree abb A e Gebr n Rl nta 39 PECHNICALDATA ere 40 LIST OF AVAILABLE MODELS 7 21 2 nde ioi ture ilemi dimi daniel inellesmiiisaseyda l dani 41 ejg2 45 m Bude qe 42 el ggg ecc esc 43 13 1 Angled fixing bracket mounting 44 ACCESSORIES ser 45 14 1 ep lE DE 45 14 2 cO T OTT UHR RS 46 14 3 Laser eg oreste davon eu 47 GEOSSAR Y usate UM LI DU NIE UU I I MS IL 48 HSC2 INSTRUCTION MANUAL 1 GENERAL INFORMATION 1 1 GENERAL DESCRIPTION OF THE SAFETY LIGHT CURTAINS The safety light curtains of the HSC2 series are optoelectronic multibeam devices that are used to protect working areas that in presence of machines robots and automatic systems in general can become dangerous for operators that can get in touch even accidentally with moving parts The light curtains of the HSC2 series are Type 2 intrinsic safety systems used as accident prevention protection devices and are manufactured in accordance with the international Standards in force for safety in particular CEI IEC 61496 1 2004 Safety of machinery electro sensitive protective equipment Part 1 General prescriptions and tests CEI IEC 61496 2 2006 Safety of machinery electro sensitive protecti
7. availability and safety requirements but also ergonomic and productivity requirements as the protected area remains always accessible when the machine is stopped 11 HSC2 INSTRUCTION MANUAL Example 2 Cooling and conditioning systems Cooling and conditioning systems as well as automotive equipment and components are checked inside a machine to detect possible leaks by a helium mass spectrometer The point where these parts are positioned inside the measuring chamber requires a Type 2 protection ensuring a certain space saving and an easy access to the protected area Solution the HSC2 safety light curtain series represents the ideal solution if the safety requirements and the application are considered When even just one of the light curtain beams is interrupted the test machine is immediately stopped Advantages the HSC2 light curtain meets the customer s needs when easy access is necessary in presence of machine stops Easy installation configuration and use are other advantages Example 3 Automatic warehouses Operator protection in automatic warehouses Solution the HSC2 safety light curtain series represents the ideal solution if the safety requirements and the application are considered When even just one of the light curtain beams is interrupted the carousel is immediately stopped Advantages the HSC2 light curtain meets the customer s needs when easy access is necessary in presence of machine stops Eas
8. height protected by the safety light curtain Hp PROTECTED AREA PROTECTED HEIGHT TX RX Fig 2 The HSC2 controlled height is delimited by the yellow line pad printed on the front glass and by the dimensions listed in the table TCentrolied height Hp HSC2 30 06 150 2 30 12 300 HSC2 30 18 450 8 2 30 24 600 HSc23030 HSC2 30 36 900 HSC2 30 42 1050 HSC2 30 48 1200 HSC2 30 54 1350 HSC2 30 60 1500 HSC2 30 65 1650 _HSC2 30 70 amp 1800 HSC2 INSTRUCTION MANUAL 1 3 3 Minimum installation distance The safety device must be positioned at a specific safety distance Fig 3 This distance must ensure that the dangerous area cannot be reached before the dangerous motion of the machine has been stopped by the ESPE The safety distance depends on 4 factors according to the EN 999 Standard Response time of the ESPE the time between the effective beam interruption and the opening of the OSSD contacts Machine stopping time the time between the effective opening of the contacts of the ESPE and the real stop of the dangerous motion of the machine ESPE resolution Approaching speed of the object to be detected Fig 3 The following formula is used for the calculation of the safety distance S zK t7t C where Minimum safety distance in mm opeed of the
9. object limb or body approaching the dangerous area in mm sec Response time of the ESPE in seconds see section 9 Technical data Machine stopping time in seconds Resolution of the system Additional distance based on the possibility to insert the body or one of body parts inside the dangerous area before the protective device trips C 8 4 14 for devices with resolution lt 40mm 850 mm for devices with resolution gt 40mm HSC2 INSTRUCTION MANUAL NOTE K value is 2000 mm s if the calculated value of S is lt 500 mm 1600 mm s if the calculated value of S is gt 500 mm When devices with gt 40 mm resolution are used the height of the top beam has to be gt 900 mm H2 from machine supporting base while the height of the bottom beam has to be lt 300 mm H1 If the safety light curtain must be mounted in a horizontal position Fig 4 the distance between the dangerous area and the most distant optical beam must be equal to the value calculated using the following formula S 1600 mm s t t2 1200 0 4 H where Minimum safety distance in mm Response time of the ESPE in seconds see section 9 Technical data Machine stopping time in seconds Beam height from ground this height must always be less than 1 000 mm HSC2 INSTRUCTION MANUAL Practical examples Let s suppose to have a light curtain with height 600 mm 1 To calculate the distance of the device from the ESPE a
10. reflecting surface Fig 7 It is thus important to position the safety light curtain according to the minimum distance from reflecting surfaces The minimum distance depends on e Operating distance between emitter TX and receiver RX e Real opening angle of ESPE EAA in particular for ESPE type 2 EAA 10 59 17 HSC2 INSTRUCTION MANUAL Diagram of Fig 8 shows the min distance from the reflecting surface Dsr based on the operating distance m ni ESPE Type 2 0 6 Distance from reflecting surface Dsr m 19 Operating distance Fig 8 The formula to get Dsr is the following m 0 27for oper distances lt Dsr m 0 5 operating distance m 19 20 for oper distances gt 3 2 2 3 Emitter and receiver orientation The two units shall be installed parallel to each other with the beams orthogonal respect to the emitting and receiving directions with the connectors positioned in the same manner The configurations shown in Fig 9 must be avoided NO Fig 9 18 HSC2 INSTRUCTION MANUAL 2 2 4 Installation of several adjacent safety light curtains When several safety devices must be installed in adjacent areas interferences between the emitter of one device and the receiver of the other must be avoided Fig 10 provides an example of possible interferences between different devices and two pertinent solutions opaque surface HSC2 INSTRUCTION MANUAL
11. vertical position the following formula is used is m UH Hn Wm ll T 5 ESPE response time SE SR2 relay release time max 80 ms Machine total stopping time r 8 d 14 for devices with resolution lt 40 mm C 850 for devices with resolution gt 40 mm d Resolution of the system In all cases if K 2000mm sec then 5 will be gt 500 mm Distance will have then to be recalculated using K 1600 mm sec 30 060 0 398 sec 2 calculate the distance of the device from the ESPE a horizontal position the following formula is used 1600 T 1200 0 4 H Beam height from ground 15 50 resolution WARNING the reference standard is EN 999 Machine safety the positioning of the protective device based on the approaching speed of the human body This information is just an indication and a kind of summary For safety distance correct calculation it is compulsory to refer to the whole EN999 standard 10 HSC2 INSTRUCTION MANUAL 1 4 TYPICAL APPLICATIONS The safety light curtains of the HSC2 series are used in all automation fields where the control and protection of the access to dangerous areas are necessary In particular they are used to stop the moving of mechanical parts in Automatic machines Machines for packaging material handling storing Weaving machines wood wo
12. 1800mm 1 2 NEW FEATURES COMPARED TO THE SF2 SERIES The HSC2 safety light curtains present the following features Increased operating distance Range enlargement with 150 to 1800 mm controlled heights Reduced response times New fastening system with rotating brackets New mechanical profile compatible with SE accessories Different positioning of synchronisation optics the first one from the reference line Different mechanical mounting HSC2 INSTRUCTION MANUAL 1 3 HOW TO CHOOSE THE DEVICE here are at least three different main characteristics that should be considered when choosing a safety light curtain after having evaluated the risk assessment 1 3 1 Resolution The resolution of the device is the minimum dimension that an opaque object must have in order to obscure at least one of the beams that constitute the sensitive area The resolution strictly depends on the part of the body to be protected R 30 Hand protection As shown in Fig 1 the resolution only depends on the geometrical characteristics of the lenses diameter and distance between centres and is independent from any environmental and operating conditions of the safety light curtain cn gt zz TX RX Fig 1 The resolution value is obtained applying the following formula R I d Distance between two adjacent optics d Lens diameter HSC2 INSTRUCTION MANUAL 1 3 2 Controlled height The controlled height is the
13. 2 2 5 Use of deviating mirrors The control of any dangerous area with several but adjacent access sides is possible using only one safety device and well positioned deviating mirrors Fig 11 shows a possible solution to control three different access sides using two mirrors placed at 45 with respect to the beams RX s DANGEROUS D3 AREA i D1 S mirror gt 4 mirror Fig 11 The operator must respect the following precautions when using the deviating mirrors e alignment of the emitter and the receiver can be a very critical operation when deviating mirrors are used Even a very small mirror displacement is enough to lose alignment The use of the HTM laser pointer accessory is recommended under these conditions e The minimum safety distance S must be respected for each single section of the beams effective operating range decreases by about 15 by using only one deviating mirror the percentage further decreases by using 2 or more mirrors for more details refer to the technical specifications of the mirrors used The following table shows the operating distances relating to the number of mirrors used number of mirrors operating distance i 16 5 m e not use more than three mirrors for each device he presence of dust or dirt on the reflecting surface of the mirror causes a drastic reduction in the range 20 HSC2 INSTRUCTION MANUAL
14. Diagnostic functions 25 26 HSC2 INSTRUCTION MANUAL Connect both OSSDs to the activating device Failure to connect an OSSD to the activating device jeopardises the system safety degree that the light curtain has to control 24VDC 24VDC YES 24VDC OSSD1 OSSD1 OSSD2 24VDC 24VDC Fig 16 Fig 17 HSC2 INSTRUCTION MANUAL CS ME 03VU24 Y14 Light barrier module ESPE type 2 and 4 Terminals layout Failure 18 23 EDM Led lights Possible failure ee a2 051 052 CH1 CH2 Wrong connection 5000 Off Off Power wires cut down OOOO ESPE failure Short circuit between channels Failure of expansion module CH1 CH2 Failure of expansion module On Off Wrong connection ESPE failure 1 CH1 CH2 Failure of expansion module es Off On Wrong connection 14 24 34 EDM l ESPE failure Example of connecting the EDM module to the HSC series of safety light curtains with function 1 24VDC i ie 1 E Te CS 03 z p OV 24 VDC ESPE 08501 05502 27 HSC2 INSTRUCTION MANUAL 4 2 EARTH CONNECTION HSC2 safety light curtain units are preset for easy ground connection A special compartment positioned onto caps and marked with the special symbol shown in Figure 18 allows connection with ground cable by means of an additional screw c
15. ECT ALIGNMENT PROCEDURE The light curtain alignment can be effected only after having completed the mechanical installation and the electrical connections The following procedure has to be followed e Check the green LED W and the yellow LED 299 on the TX unit If ON the emitter is running correctly e Verify that the sensitive area from the safety light curtain is free e Verify that one of the following conditions is present on the RX unit e STANDARD CONDITION NORMAL OP e Green LED gt ON and red LED 31 OFF Both yellow LEDs A are OFF Units are aligned SIOP CONDITION SAFE BREAK Green LED OFF and red LED 1 ON The status of both yellow LEDs 4 W does not matter Units are not aligned Continue with the following steps to pass from condition 2 to condition 1 A Keep the receiver in a steady position and set the emitter until the yellow LED 1 SYNC is OFF This condition shows the effective alignment of the first synchronisation beam B Rotate the emitter pivoting on the lower optics axis until the yellow LED LAST is OFF Under these conditions the SAFE LED shall turn ON NOTE Ensure that the green LED is steady C Delimit the area in which the LED gt is steady through some micro adjustments for the first and then for the second unit then place both units in the centre of this area Fixthe two units firmly using brackets 2 Verify that the green LED on the RX unit is O
16. N and beams are not interrupted then verify that the red LED turns ON if even one single beam is interrupted condition where an object has been detected e This verification shall be made with the special cylindrical Test Piece having a size suitable to the resolution of the device used NOTE Passing the Test Piece along the whole sensitive area and at any distance from the two units the red LED i shall be always ON and never change status A daily test is recommended 31 HSC2 INSTRUCTION MANUAL 6 FUNCTIONING MODE 6 1 RESET MODE The interruption of a beam due to opaque object causes the opening of OSSD outputs and the stop of the safety light curtain SAFE BREAK condition ZIP The ESPE will automatically restart its standard operation NORMAL OP condition gt as soon as the object is removed WARNING Carefully assess risk conditions and reset modes applications protecting access to dangerous areas the automatic reset mode is potentially unsafe if it allows the operator to pass completely beyond the sensitive area see Fig 6b In this case the reset using for example the manual reset of the SE SR2 relay page 26 might be necessary 6 2 TEST FUNCTION The TEST function can be activated by keeping a normally open external contact TEST push button closed for at least 0 5 seconds The TEST signal is active high OSSD AK 24VDC 32 HSC2 INSTRUCTION MANUAL 6 3 RESET FUNCTI
17. N the supply circuit if the failure continues contact HTM OSSD error yellow and red BLINKING Internal error red ON yellow Error status BLINKING Optical error prot at continues contact HTM Reset If the failure Check connections and input voltage correct value If the failure continues contact HTM No power supply LEDs OFF 35 HSC2 INSTRUCTION MANUAL For Emitter Light curtain being tested the OSSD status must be green ON OFF Normal operation Emission green Light curtain working ON yellow normal operating conditions Internal error Switch OFF and switch green ON ON the power supply yellow circuit If the failure BLINKING continues contact HTM Optic error Switch OFF and switch green ON ON the power supply yellow circuit f the failure BLINKING continues contact HTM Check connections and input voltage value If the supply LEDs OFF continues contact Error status No power 36 HSC2 INSTRUCTION MANUAL 8 PERIODICAL CHECKS The following is a list of recommended check and maintenance operations that should be periodically carried out by qualified personnel Check that The ESPE stays locked 1 during beam interruption along the entire protected area using the suitable Test Piece The ESPE is correctly aligned by slightly pressing product side in both directions the red LED shall not ON ZIP I Enabling the TE
18. ON The RX light curtain has a RESET function which is activated after an internal error The reset can be made only in case of optical error or OSSD error See sect 7 Diagnostic Functions The RESET function can be activated by keeping a normally open external contact RESET RESTART push button closed for at least 5 seconds The RESET signal is active high Safety light curtain status Faulty block Standard operating mode 24VDC 33 HSC2 INSTRUCTION MANUAL 7 DIAGNOSTIC FUNCTIONS 7T 1 USER INTERFACE The operator can visualise the operating condition of the light curtains through the four LEDs positioned on the receiver unit and two LEDs on the emitter unit Fig 21 shows all signalling LEDs modes OFF ON and BLINKING LED OFF LED BLINKING LED ON Fig 21 34 HSC2 INSTRUCTION MANUAL 7 2 DIAGNOSTIC MESSAGES The operator is able to check the main causes of the system stop and failure using the same LEDs used for visualising the functions For Receiver Light curtain being tested the OSSD status shall be OFF Emission Light curtain working and in Normal operation OSSD ON standard operating green ON conditions Interruption OSSD OFF red ON Light curtain working and in safety block conditions Check OSSD connections make sure that they are not In contact with one another or with the supply cables then Reset If the failure continues contact HTM Switch OFF and switch O
19. ST function the OSSD outputs should open the red LED is ON and the controlled machine stops The response time upon machine STOP including response time of the ESPE and of the machine is within the limits defined for the calculation of the safety distance see section 2 Installation mode The safety distance between the dangerous areas and the ESPE are in accordance with the instructions included in section 2 nstallation mode Access of a person between ESPE and machine dangerous parts is not possible nor is it possible for him her to stay there Access to the dangerous area of the machine from any unprotected area is not possible The ESPE and the external electrical connections are not damaged The frequency of checks depends on the particular application and on the operating conditions of the safety light curtain according to the Fig 12 scheme Verify that ESPE remains blocked 1 intercepting the beams along the protected area using the specific test piece following the Fig 12 scheme TP30 for light curtains with 30 mm resolution HSC2 30 XX 37 HSC2 INSTRUCTION MANUAL 8 1 GENERAL INFORMATION AND USEFUL DATA Safety MUST part of our conscience The safety devices fulfil their safety function only if they are correctly installed in accordance with the Standards force If you are not certain to have the expertise necessary to install the device in the correct way HTM Customer Se
20. TALLATION OF THE DEV CE 4 Make sure that the protection level assured by HSC2 device Type 2 is compatible with the real danger level of the machine to be controlled according to EN 954 1 EN13849 14 The outputs OSSD of the ESPE must be used as machine stopping devices and not as command devices The machine must have its own START command The dimension of the smallest object to be detected must be larger than the resolution level of the device The ESPE must be installed in a room complying with the technical characteristics indicated in section 10 Technical data Do not place the device near intense and or flashing light sources and in particular close to receiving unit front surface The presence of intense electromagnetic disturbances could affect device correct operation This condition shall be carefully assessed by seeking the advice of HIM Technical service The operating distance of the device can be reduced in presence of smog fog or airborne dust A sudden change in environment temperature with very low minimum peaks can generate a small condensation layer on the lenses and so jeopardise functioning HSC2 INSTRUCTION MANUAL 2 2 GENERAL INFORMATION ON DEVICE POSITIONING The safety light curtain should be carefully positioned in order to reach a very high protection standard Access to the dangerous area must only be possible by passing through the protecting safety light beams Fig 5
21. a shows some examples of possible access to the machine from the top and the bottom sides These situations may be very dangerous and so the installation of the safety light curtain at sufficient height in order to completely cover the access to the dangerous area Fig 5b becomes necessary Fig 5b Under standard operating conditions machine starting must not be possible while operators are inside the dangerous area 15 HSC2 INSTRUCTION MANUAL When the installation of the safety light curtain very near to the dangerous area is not possible a second light curtain must be mounted in a horizontal position in order to prevent any lateral access as shown in Fig 6b N If the operator is able to enter the dangerous area an additional mechanical protection must be mounted to prevent the access NO YES Fig 6b 2 2 1 Minimum installation distance Refer to par 1 3 3 Minimum installation distance 16 HSC2 INSTRUCTION MANUAL 2 2 2 Minimum distance from reflecting surfaces Reflecting surfaces placed near the light beams of the safety device over under or laterally can cause passive reflections These reflections can compromise the recognition of an object inside the controlled area However if the RX receiver detects a secondary beam reflected by the side reflecting surface the object might not be detected even if the object interrupts the main beam DANGEROUS AREA reflecting surface
22. and Reset operation see section 6 Functioning mode e The device is protected internally against overvoltage and overcurrent The use of other external components 15 not recommended Example connection with safety relay 511 511 6 12 511 511 Y36 512 24 V DC 531 Q n E 512 S52 Y37 534 S12 552 Y37 534 Evaluation 05508 on a connected ESPE Evaluation of 055058 on a connected ESPE dual channel short circuit detection via ESPE dualchannel short circuit detection ESPE _ manual reset automatic reset i 511 511 Y36 512 9 y ite 531 AN 96086 512 552 7 534 i Evaluation of OSSDs a connected ESPE Connection example for external contactors dualchannel short circuit detection ESPE Oo single channel automatic reset monitored reset The figures show the connection between the safety light curtains and the safety relay of the SE SR2 series functioning in the Automatic Start mode left side and Manual Start with monitoring right side CE Do not use varistors RC circuits or LEDs in parallel at relay inputs or in series at OSSD outputs e The OSSD1 and OSSD2 safety contacts cannot be connected in series or in parallel but can be used separately Fig 16 If one of these configurations is erroneously used the device enters into the output failure condition see section 7
23. f the electrosensitive protective equipment ESPE connected to machine control system that when the sensor is triggered during standard operating mode is switched to the inactive status PROTECTED area where a specified test object is detected by the ESPE PROTECTIVE DEVICE device having the function to protect the operator against possible risks of injury due to the contact with machine potentially dangerous parts QUALIFIED OPERATOR a person who holds a professional training certificate or having a wide knowledge and experience and who is acknowledged as qualified to install and or use of the product and to carry out periodical test procedures RECEIVER unit receiving infrared beams consisting of a set of optically synchronised phototransistors The receiving unit combined with the emitting unit installed in the opposite position generates an optical curtain the detecting area RESPONSE TIME max time elapsing between the occurrence of the event leading to sensor activation and the reaching of the inactive state by the output signal switching device OSSD RESTART INTERLOCK RESTART device preventing machine automatic restart after sensor activation during a dangerous phase of machine operating cycle after a change of machine operating mode and after a variation in machine start control devices RISK probability of occurrence of an injury and severity of the injury itself SAFETY LIGHT CURTA N it i
24. in Normal operating function for at least 10 15 minutes and placing the specific test piece in the protected area in the SAFE condition for the same period Verify the correspondence of all the accessory functions activating them in the different operating conditions 21 HSC2 INSTRUCTION MANUAL 3 MECHANICAL MOUNTING The emitting TX and receiving RX units must be installed with the relevant sensitive surfaces facing each other The connectors must be positioned on the same side and the distance must be included within the operating range of the model used see section 10 Technical data The two units must be positioned the most aligned and parallel possible The next step is the fine alignment as shown in section 5 Alignment Procedure Two types of brackets can be used to fix the two units Angled fixing brackets Angled fixing brackets are supplied with all HSC2 models Fig 13 Adjustable supports for correcting unit inclination on the axes are available on request see section 14 Accessories For fixing with angled brackets refer to Fig 13 Fig 13 22 HSC2 INSTRUCTION MANUAL PAET a ee B WIE e mn East MODELS L mm A mm B mm C mm 283 we s _ 26 _
25. ns OSSD1 and 0552 light curtain outputs are simultaneously switched OFF within the device response time CONTROLLED MACHINE machine having the potentially dangerous points protected by the light curtain or by another safety system CROSSING HAZARD situation under which an operator crossing the area controlled by the safety device and this latter stops and keeps the machine stopped until the hazard is eliminated and then enters the dangerous area Now the safety device could not be able to prevent or avoid an unexpected restart of the machine with the operator still present inside the dangerous area DANGEROUS AREA area representing an immediate or imminent physical hazard for the operator working inside it or who could get in contact with it DETECTING CAPACITY RESOLUTION limit of the parameter of the sensor function specified by the supplier that will enable the electrosensitive protective equipment ESPE In case of an active optoelectronic protective device AOPD with resolution we mean the minimum dimension which an opaque object must have in order to interrupt at least one of the beams that constitute the sensitive area ELECTROSENSITIVE PROTECTIVE EQUIPMENT ESPE assembly of devices and or components working together to activate the protective disabling function or to detect the presence of something and including at least a sensor command control devices and output signal switching devices EMITTER unit emitting infra
26. nstallationdistance 16 2 2 2 Minimum distance from reflecting 17 2 2 3 Emiterandreceiverorientatlon 18 2 2 4 Installation of several adjacent safety light curtains 19 2 2 5 Use oOr deviating MINT OS ekme a ikale le el lendi ESI 20 2 2 6 Controlsafterfirstinstallation 21 MECHANICALMOUNT ING 22 ELECTRICAL CONNEG TIONS sizede mais bedele a nisa Misya 24 4 1 Notes GONNECIIONS EU i o T 25 4 2 Eat cor testor 28 ALIGNMENT PROCEDURE mea 29 5 1 Correct alignment procedure 31 FUNCTIONING MODE 32 Su a e MOOS ccc 32 6 2 MR 32 gt aede 33 DIAGNOSTIC FUNCTIONS sele elaman damn 34 SS al IC 2 6 2 MN ee 34 22 Diagnostic IMNECSSAGSS li o eno a lan 35 PERIODICAL CHECK S 37 8 1 General information and useful 38 O L ki MEE 38 DEVICE MAINTENANCE ei est aae od ta act Lee cede Meni 39 Prod ctdis Hos Al
27. oduct technical specifications are given below ELECTRICAL DATA Power supply Vdd 24 Vdc 20 Vdd Unit current draw TX 2W max 3 5 W max without load 2 1 4 max 0 5 max each output Vdd 1 V min 0 2 V 2 2 UF 24Vdc max See table below 150 1800mm Type 2 Reset Test Class Class Ill see sect 4 2 Connections M12 4 poles for emitter M12 5 poles for receiver Cables length for power supply 50 m max OPTICAL DATA Emitting light X Infrared LED 950 nm 30 mm Operating distance 0 2 19 Ambient light rejection IEC 61496 2 MECHANICAL AND ENVIRONMENTAL DATA Operating temperature 10 55 C Storage temperature 25 70 C Humidity 15 95 condensation Vibrations Width 0 35 mm Frequency 10 55 Hz 20 sweep per axis 10ctave min EN 60068 2 6 Shock resistance 16 ms 10 G 1 000 shocks per axis EN 60068 2 29 Housing material Painted aluminium yellow RAL 1003 Front side material PMMA Caps material PC MAKROLON Weight single unit 1 3 kg linear metre 40 HSC2 INSTRUCTION MANUAL 11 LIST OF AVAILABLE MODELS Protected Height No Beams time Resolution mm msec mm HSC2 30 06 foo he ho o ooo 24 ____ __ 3 e bo 40 4 80 ____ sceso e 3 o HSC23042 1000 j 56 30 ____ 502 30 48 20 64 p8 ____
28. oming with the equipment OO V F Fig 18 Ground connection configuration is the most common and guarantees the best immunity against electromagnetic disturbances This condition has to be carefully evaluated according to the EMC disturbance immunity and necessary insulation class considering the plant or entire system where the light curtain is installed e he ground connection of the two units is not necessary for Class while the use of a duly insulated low voltage feeder tyoe SELV or PELV is compulsory In this case we recommend covering the earth symbol present on the caps of the two units with a blank sticker e The ground connection of the two units is compulsory for Class while the use of a duly insulated feeder type SELV or PELV is not compulsory but anyway recommended The following table is a summary of HSC2 electrical protections Electrical protections Class Ground Connection Compulsory Not necessary Ground connection symbol Compulsory Power supply by generators SELV PELV Recommended Compulsory 28 HSC2 INSTRUCTION MANUAL 9 ALIGNMENT PROCEDURE The alignment between the emitting and the receiving units is necessary to obtain the correct functioning of the light curtain A good alignment prevents outputs instability caused by dust or vibrations The alignment is perfect if the optical axes of the first and the last emitting units beams coincide with the op
29. red beams consisting of a set of optically synchronised LEDs The emitting unit combined with the receiving unit installed in the opposite position generates an optical curtain i e the detecting area FINAL SWITCHING DEVICE FSD part of the control system connected to machine safety and breaking the circuit towards machine primary command element MPCE when the output signal switching device OSSD reaches the inactive condition MACHINE OPERATOR qualified person authorised for machine use MACHINE PRIMARY COMMAND ELEMENT elecirically powered element having the direct control of machine regular operation so as to be the last element in order of time to operate when the machine has to be enabled or blocked MIN INSTALLATION DISTANCE min distance necessary to allow machine dangerous moving parts to completely stop before the operator can reach the nearest dangerous point This distance shall be measured from the middle point of the detecting area to the nearest 48 HSC2 INSTRUCTION MANUAL dangerous point The factors affecting min installation distance value are machine stop time safety system overall response time barrier resolution N O normally opened N C normally closed OFF STATUS status when the output circuit is interrupted and does not allow current stream ON STATUS status when the output circuit is operational and allows current stream OUTPUT SIGNAL SWITCHING DEVICE 0550 part o
30. rking machines ceramic working machines Automatic and semiautomatic assembly lines Automatic warehouses food industry applications HTM Technical Service has to verify the compatibility of the material of the safety light curtain housing with any chemical agents used in the production process Example 1 Hand protection on moulding machines In order to protect the light curtain against dust and humidity the IP69K protective enclosure is used The aim is to prevent operator s hands from being squashed during the final product stacking process In addition the solution must not interfere with the manufacturing process Working premises are characterised by a humidity of 85 and a temperature of 25 Moreover washing with cold high pressure waterjets is frequent as well as the use of alkaline detergents or acids Solution the IP69K protective enclosure made from an acrylic PMMA tube is an effective protection without traps for dirt or contamination The cap s O ring prevents water or dirt from entering the tube and at the same time prevents also internal condensation The cable connecting the enclosure to the light curtain is protected and fixed thanks to a PG gland that prevents water or dirt from entering the tube Advantages The use of HSC2 with the IP69K enclosure ensures reliable protection under extreme environmental conditions Not only does the IP69K protective enclosure meet hygiene washing resistance
31. rvice is at your disposal to carry out the installation The device uses fuses that are not self resetting Consequently in presence of short circuits causing the cut off of these fuses both units shall be sent to HTM service department A power failure caused by interferences may cause the temporary opening of the outputs but the safe functioning of the light curtain will not be compromised 8 2 WARRANTY HTM guarantees each brand new HSC2 system under standard use conditions against manufacturing defects in material and workmanship for a period of 36 thirty six months from the date of manufacturing HTM will not be liable for any damages to persons and things caused by failure to stick to the correct installation modes and device use Warranty validity is subject to the following conditions e User shall notify HTM the failure within thirty six months from product manufacturing date e Failure or malfunction shall not have been originated directly or indirectly by use for unsuitable purposes failure to comply with the intended use prescriptions negligence unskillfulness wrong maintenance repairing changes adaptations not made by HTM personnel tampering with the device etc accidents or crashes even due to transportation or by force majeure causes other causes not depending from HTM If the device does not work send both units receiver and emitter to HTM The Customer is responsible for all tran
32. s an active optoelectronic protective device AOPD including an integrated system consisting of one or several emitting elements and one or several receiving elements forming a detection area with a detecting capacity specified by the supplier START INTERLOCK START device preventing machine automatic start when the ESPE is powered or when the power supply is cut and then restored TEST PIECE opaque object having a suitable size and used to test safety light curtain correct operation TYPE OF ESPE the Electrosensitive Protective Equipment ESPE have different reactions in case of faults or under different environmental conditions The classification and definition of the type ex type 2 type 4 according to IEC 61496 1 defines the minimum requirements needed for ESPE design manufacturing and testing WORKING POINT machine position where the material or semifinished product is worked 49
33. sections of this manual containing important information for the operator are preceded by a note Notes and detailed descriptions about particular characteristics of the safety devices in order to better explain their functioning Special instructions regarding the installation process The information provided in the paragraphs following this symbol is very important for safety and may prevent accidents Always read this information accurately and carefully follow the advice to the letter HSC2 INSTRUCTION MANUAL This manual contains all the information necessary for the selection and operation of the safety devices However specialised knowledge not included in this technical description is required for the planning and implementation of a safety light curtain on a power driven machine As the required knowledge may not be completely included in this manual we suggest the customer to contact HTM Technical Service for any necessary information relative to the functioning of the HSC2 light curtains and the safety rules that regulate the correct installation see section 8 Periodical checks 1 1 1 Package contents Package contains the following objects e Receiver RX Emitter TX Quick Guide for first installation CD with user manual and other documents Checklist and periodical maintenance schedule 4 angled fixing brackets and specific fasteners 2 additional angled fixing brackets for models with heights between 1200mm and
34. sport charges and damage risks or material loss during transport unless otherwise agreed All replaced products and parts become a property of HTM HTM does not accept any warranty or right other than the above described ones No requests for compensation for expenses activities stop or other factors or circumstances somehow connected to the failure of the product or one of its parts to operate cannot be put forward for any reason In case of problems please contact HTM Service Department Sales Technical Service Phone 800 644 1756 Fax 888 283 2127 e mail support htmsensors com 38 HSC2 INSTRUCTION MANUAL 9 DEVICE MAINTENANCE HSC2 safety light curtains do not require special maintenance operations To avoid the reduction of the operative distance optics protective front surfaces shall be cleaned at regular intervals To this end use soft cotton cloths damped in water do not apply too much pressure onto the surface so as not to make it dull Please do not use on plastic surfaces or light curtain painted surfaces e alcohol or solvents e wool or synthetic cloths e paper or other abrasive materials 9 1 PRODUCT DISPOSAL Under current Italian and European laws HTM is not obliged to take care of product disposal at the end of its life HIM recommends to dispose of the product in compliance with local laws or contact authorised waste collection centres 39 HSC2 INSTRUCTION MANUAL 10 TECHNICAL DATA The pr
35. tical axes of the corresponding elements of the receiving unit The beam used to synchronise the two units is the first after the connector SYNC is the optics connected with this beam and LAST is the optics connected to the last beam after the SYNC unit last optics LAST first optics synchronisation optics SYNC Fig 19 Signals are clearly identified through symbols allowing immediate reading independent of bars directions A short description of the signalling LEDs is necessary to avoid misunderstandings Receiver Emitter NORMAL NORMAL EASI OP SAFE BREAK SYNC ON Fig 20 29 HSC2 INSTRUCTION MANUAL The standard installation described hereinafter is the one shown Fig 20 with the bar assembled with the connectors pointing down Two yellow LEDs A LAST SYNC HSC2 receiver facilitates the alignment procedure During standard operation the LEDs indicate the safety light curtain status as shown in the table FUNCTIONING STATUS LED Symbol Normal Stop colour Status Status NORMAL OP SAFE BREAK Yellow A OFF ON OFF OFF or Standard Units not Bottom side Units aligned condition aligned aligned but at least one Not interrupted Top side not Lowestbeam 0 beams the highest and beams aligned interrupted 9 9 lowest excluded is interrupted Highest beam interrupted 30 HSC2 INSTRUCTION MANUAL 5 1 CORR
36. ve equipment Particular requirements for equipment using active optoelectronic protective devices The device consisting of one emitter and one receiver housed inside strong aluminium profiles generates infrared beams that detect any opaque object positioned within the light curtain detection field The emitter and the receiver are equipped with the command and control functions The connections are made through a M12 connector located in the lower side of the profile The synchronisation between the emitter and the receiver takes place optically i e no electrical connection between the two units is required The microprocessor guarantees the check and the management of the beams that are sent and received through the units The microprocessor through some LEDs informs the operator about the general conditions of the safety light curtain see section 7 Diagnostic functions The device consists in 2 units that according to the model are composed by one or several emitting and receiving modules The receiver checks the control operations and safety actions During installation two yellow LEDs facilitate the alignment of both units see section 5 Alignment procedure As soon as an object a limb or the operator s body accidentally interrupts one or some of the infrared beams sent by the emitter the receiver immediately opens the OSSD outputs and blocks the MPCE machine if correctly connected to the OSSD Some parts or
37. y installation configuration and use are other advantages 12 HSC2 INSTRUCTION MANUAL 1 5 SAFETY INFORMATION N For a correct and safe use of the safety light curtains of the HSC2 series the following points must be observed he stopping system of the machine must be electrically controlled e his control system must be able to stop the dangerous movement of the machine within the total machine stopping time T as per par 1 1 3 and during all working cycle phases Mounting and connection of the safety light curtain must be carried out only by qualified personnel according to the indications included in the special sections refer to sections 2 3 4 5 and in the applicable Standards he safety light curtain must be securely installed in a particular position so that access to the dangerous zone is not possible without the interruption of the beams see section 2 Installation mode he personnel operating the dangerous area must be well trained and must have adequate knowledge of all the operating procedures of the safety light curtain e The TEST button must be located outside the protected area because the operator must check the protected area during all Test and Reset operations Please carefully read the instructions for the correct functioning before powering the light curtain 13 2 HSC2 INSTRUCTION MANUAL INSTALLATION MODE 2 1 PRECAUTIONS TO BE OBSERVED FOR THE CHO CE AND INS
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