CARLO GAVAZZI Sense SC4 Instruction Manual
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CARLO GAVAZZI Sense SC4 Instruction Manual

CARLO GAVAZZI Sense SC4 Instruction Manual

Safety light curtain with infrared beams
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CARLO GAVAZZI
A u t o m a t i o n
C o m p o n e n t s
Safety Light Curtain with infrared beams SC4
Instruction manual

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Summary of Contents for CARLO GAVAZZI Sense SC4

  • Page 1 CARLO GAVAZZI A u t o m a t i o n C o m p o n e n t s Safety Light Curtain with infrared beams SC4 Instruction manual...
  • Page 2 All brand and product names mentioned herein are for identification purposes only and may be trademarks or registered trademarks of their respective owners. Carlo Gavazzi shall not be liable for technical or editorial errors or omissions contained herein, not for incidental or consequential damages resulting from the use of this material.
  • Page 3 Instruction Manual Safety Light Curtain SC4 Specifications are subject to change without notice. Pictures are just an example. For special features and/or customization, please ask to our sales network. 08/11/2013...
  • Page 4 Instruction Manual Safety Light Curtain SC4 Index 1. GENERAL INFORMATION1 1.1. General description of the safety light curtains 1.1.1. Package contents 1.2. New features compared to SB4 series (with EDM function) 1.3. How to choose the device 1.3.1. Resolution 1.3.2. Controlled height 1.3.3.
  • Page 5 Instruction Manual Safety Light Curtain SC4 10. TECHNICAL DATA 11. LIST OF AVAILABLE MODELS 12. OVERALL DIMENSIONS 13. ACCESSORIES 13.1. Angled fixing bracket 13.2. Test piece 13.3. Connection cables 14. GLOSSARY Specifications are subject to change without notice. Pictures are just an example. For special features and/or customization, please ask to our sales network. 08/11/2013...

  • Page 6: General Information

    As the required knowledge may not be completely included in this manual, we suggest the customer to contact Carlo Gavazzi Technical Service for any necessary information relative to the functioning of the SC4 light curtains and the safety rules that regulate the correct installation (see section 8 “Periodical checks”).

  • Page 7: Package Contents

    Instruction Manual Safety Light Curtain SC4 1.1.1. Package Contents Package contains the following objects: • Receiver (RX) • Emitter (TX) • Installation Quick Guide of SC4 curtain • Biannual checklist and periodical maintenance schedule • CD with instruction manual and other documents • 4 angled fixing brackets and specific fasteners • 2 angled fixing brackets for models with heights included between 1200 and 1800 mm 1.2. New Features Compared to SB4 Series (with EDM function) With respect to SB4 (EDM) series, the SC4 safety light curtain series presents new important features: • Higher operating distance • Shorter response time (see sect.10 “Technical Data”) • Range enlargement with 150 to 1650 mm controlled heights...

  • Page 8: How To Choose The Device

    Instruction Manual Safety Light Curtain SC4 1.3. How to Choose the Device There 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.

  • Page 9: Controlled Height

    Instruction Manual Safety Light Curtain SC4 1.3.2. Controlled Height The controlled height is the height protected by the safety light curtain ( Hp ) Fig. 2 The SC4 controlled height is delimited by the yellow line pad-printed on the front glass and by the dimensions listed in the table: Model Controlled height Hp (mm)

  • Page 10: Minimum Installation Distance

    Instruction Manual Safety Light Curtain SC4 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.
  • Page 11 Instruction Manual Safety Light Curtain SC4 When devices with >40 mm resolution are used, the height of the top beam has to be ≥ 900 mm (H2) from machine supporting base while the height of the bottom beam has to be ≤ 300 mm (H1).
  • Page 12 Instruction Manual Safety Light Curtain SC4 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, in a vertical position, the following formula is used: S = K*T + C where: T = t...

  • Page 13: Typical Application

    Instruction Manual Safety Light Curtain SC4 1.4. Typical Application The SC4 FINGER safety light curtains provide solutions in all automation fields where the access to dangerous areas has to be controlled. In particular, the safety curtains can be used in stopping moving parts in: - Automatic machines;...
  • Page 14 Instruction Manual Safety Light Curtain SC4 Example 3: Paper cutting machines These machines typically cut paper to a specific size for newspapers or special applications. The operator must be protected against abrasion or cuts by cutter blades. Solution: SC4 30 mm safety light curtain is especially suitable for this kind of application, which require the installation of the device directly on the machine.

  • Page 15: Safety Information

    Instruction Manual Safety Light Curtain SC4 1.5. Safety Information For a correct and safe use of the safety light curtains of the SC4 series, the following points must be observed: The stopping system of the machine must be electrically controlled. •...

  • Page 16: Installation Mode

    • The ESPE must be installed in a room complying with the technical characteristics indicated in section 10 “Technical Data”. • Do not install device near strong and/or flashing light sources or close to similar devices. • The presence of intense electromagnetic disturbances could jeopardise device functioning. This condition shall be carefully assessed by seeking the advice of Carlo Gavazzi 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.

  • Page 17: General Information On Device Positioning

    Instruction Manual Safety Light Curtain SC4 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.
  • Page 18 Instruction Manual Safety Light Curtain SC4 When the installation of the safety light curtain 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. If the operator is able to enter the dangerous area, an additional mechanical protection must be mounted to prevent the access.
  • Page 19 Instruction Manual Safety Light Curtain SC4 2.2.2. Minimum Distance from Reflecting Surface Reflecting surfaces placed near the light beams of the safety device (over, under or laterally) can cause passive reflections. These reflections can affect the recognition of an object inside the controlled area.
  • Page 20 Instruction Manual Safety Light Curtain SC4 It is thus important to position the safety light curtain according to the minimum distance from reflecting surfaces. The minimum distance depends on: • operating distance between emitter (TX) and receiver (RX); • real aperture angle of ESPE (EAA); especially: for ESPE type 4 EAA = 50° (α = ±2.5°) Diagram of Fig.
  • Page 21 Instruction Manual Safety Light Curtain SC4 2.2.3. Distance Between Homologous Devices If different safety devices have to be installed in adjacent areas, the emitter of one device must not interfere dangerously with the receiver of the other device. The TX interfering device must be positioned outside a minimum Ddo distance from the TX – RX emitter-receiver couple axis.
  • Page 22 Instruction Manual Safety Light Curtain SC4 Installation precautions have to be taken to avoid interference between homologous devices. A typical situation is represented by the installation areas of several adjacent safety devices aligned one next to the other, for example in plants with different machines. Fig.9 provides two examples: Fig.

  • Page 23: Emitter And Receiver Orientation

    Instruction Manual Safety Light Curtain SC4 2.2.4. Emitter and Receiver Orientation The two units shall be assembled parallel each other, with the beams arranged at right angles with the emission and receiving surface, and with the connectors orientated towards the same direction.
  • Page 24 The operator must respect the following precautions when using the deviating mirrors: • The alignment of the emitter and the receiver can be a very critical operation when deviating mirrors are used. Even very small displacements of the mirror is enough to lose alignment. The use of Carlo Gavazzi laser pointer accessory is recommended under these conditions. • The minimum safety distance (S) must be respected for each single section of the beams. • The 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).
  • Page 25 Instruction Manual Safety Light Curtain SC4 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 ( I ) intercepting the beams along the protected area using the specific test piece, following the Fig.12 scheme.

  • Page 26: Mechanical Mounting

    Instruction Manual Safety Light Curtain SC4 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.
  • Page 27 Instruction Manual Safety Light Curtain SC4 Rotating brackets Rotating brackets (Fig.14), available upon request, can be used as an alternative or together with angled brackets. For fixing with rotating bracket, refer to Fig.14. Fig. 14 In case of applications with particularly strong vibrations, vibration dampers, together with mounting brackets, are recommended to reduce the impact of the vibrations.
  • Page 28 Instruction Manual Safety Light Curtain SC4 Models L (mm) A (mm) B (mm) C (mm) SC4-ED-14-150-D6 216.3 SC4-ED-14-300-D6 366.2 SC4-ED-14-450-D6 516.3 SC4-ED-14-600-D6 666.2 SC4-ED-14-750-D6 816.3 SC4-ED-14-900-D6 966.2 SC4-ED-14-1050-D6 1116.2 SC4-ED-14-1200-D6 1266.3 Models L (mm) A (mm) B (mm) C (mm) SC4-ED-30-300-D19 216.3 SC4-ED-30-450-D19...

  • Page 29: Electrical Connection

    Instruction Manual Safety Light Curtain SC4 4. Electrical Connection 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 8-pole connector is used, while for emitter a M12 4-pole connector is used.
  • Page 30 Instruction Manual Safety Light Curtain SC4 Function Connection to Status +24VDC TEST ON Test Not connected or 0V TEST OFF +24VDC RESET ON Reset Not connected or 0V RESET OFF Normally closed contact for a force EDM is active guided relay Not connected or 0V EDM is not actrive +24VDC...
  • Page 31 Instruction Manual Safety Light Curtain SC4 Fig. 16 The figures show the connection between the safety light curtains and a safety relay functioning in the Automatic Restart mode (left side) and Manual Restart with monitoring (right side). • Do not use varistors, RC circuits or LEDs in parallel at relay inputs or in series at OSSD outputs. • The OSSD1 and OSSD2 safety contacts cannot be connected in series or in parallel, but can be used separately (Fig.17), conforming to the plant’s safety requirements.
  • Page 32 Instruction Manual Safety Light Curtain SC4 • 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 +24VDC +24VDC OSSD 1 OSSD 1 OSSD1 OSSD1 +24VDC +24VDC +24VDC +24VDC OSSD 2 OSSD 2 OSSD2 OSSD2 Fig.

  • Page 33: Ground Connection

    Instruction Manual Safety Light Curtain SC4 4.2. Ground Connection SC4 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 21, allows connection with ground cable by means of an additional screw coming with the equipment. Fig.

  • Page 34: Alignment Procedure

    Instruction Manual Safety Light Curtain SC4 5. 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 unit’s beams coincide with the optical axes of the corresponding elements of the receiving unit.

  • Page 35: Correct Alignment Procedure

    Instruction Manual Safety Light Curtain SC4 5.1. Correct Alignment Procedure The light curtain alignment can be effected only after having completed the mechanical installation and the electrical connections as described above. Compare alignment results with those given in the following table. NOTE: To enter alignment mode connect the device as described in section 6.5 “Alignment aid function”.
  • Page 36 Instruction Manual Safety Light Curtain SC4 Fix the two units firmly using brackets. Verify that the green LED ( ) on the RX unit is ON and beams are not interrupted, then verify that the red LED turns ON if even one I , condition where an object has been single beam is interrupted SAFE (BREAK) detected). This verification shall be made with the special cylindrical “Test Piece” having a size suitable to the resolution of the device used (refer to paragraph 2.2.6 “Controls after first installation”).

  • Page 37: Function Mode

    Instruction Manual Safety Light Curtain SC4 6. Function Mode 6.1. Reset Mode The interruption of a beam due to an opaque object causes the opening of OSSD outputs and the stop of the safety light curtain, SAFE (BREAK) condition ESPE standard operation can be reset (OSSD safety contact closing = NORMAL OP. condition, ) in two different ways: • Automatic Restart, After activation, ESPE resets to standard operating condition once the object has been removed from the controlled area.

  • Page 38: Test Function

    Instruction Manual Safety Light Curtain SC4 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 24VDC TEST 0VDC 0.5 SEC 6.3.
  • Page 39 Instruction Manual Safety Light Curtain SC4 6.4. EDM Function The light curtain has a function for monitoring actuation external devices (EDM). This function can be enabled or deactivated. EDM enabled: - Disconnect or connect to the ground pin 3 of receiver M12 8-pole connector (EDM enabling = ON).
  • Page 40 Instruction Manual Safety Light Curtain SC4 6.5. Alignment aid Function SC4 light curtain is fitted with a system which informs the user about reached alignment degree. The alignment function can be selected on device starting by keeping closed RESET/ RESTART N.O. contact for at least 0.5 seconds (Fig.24). Alignment mode timing State of the barrier STATO DELLA BARRIERA...

  • Page 41: Diagnostic Functions

    Instruction Manual Safety Light Curtain SC4 7. Diagnostic functions 7.1. User Interface Curtain operating status is visualised through an one-digit display present on both the receiver and emitter units. SCG4-B also has four LEDs on the receiver and two LEDs on the emitter. Fig.25 shows all LEDs signalling modes: OFF, ON and BLINKING.
  • Page 42 Check OSSD connections. Make sure that they are not in OSSD error contact with one another or with the supply cables, then (red ON) Reset. If the failure continues contact Carlo Gavazzi Internal error Switch OFF and switch ON the power supply circuit. If (red ON)
  • Page 43 Status Meaning DIGIT Internal error Switch OFF and switch ON the power supply circuit. (green ON) If the failure continues contact Carlo Gavazzi Error Optical error Switch OFF and switch ON the power supply circuit. status (green ON) If the failure continues contact Carlo Gavazzi No power supply Check connections and input voltage correct value.

  • Page 44: Periodical Checks

    Instruction Manual Safety Light Curtain SC4 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 ( I) during beam interruption along the entire protected area, using the suitable “Test Piece”.

  • Page 45: General Information And Useful Data

    36 (thirty-six) months from the date of manufacturing. Carlo Gavazzi will not be liable for any damages to persons and things caused by failure to stick to the correct installation modes and device use.

  • Page 46: Device Maintenance

    • Paper or other abrasive materials 9.1. Product Disposal Under current Italian and European laws, Carlo Gavazzi is not obliged to take care of product disposal at the end of its life. Carlo Gavazzi recommends to dispose of the product in compliance with local laws or contact authorised waste collection centres.

  • Page 47: Technical Data

    Instruction Manual Safety Light Curtain SC4 10. Technical Data ELECTRICAL DATA Power supply (Vdd): 24 Vdc ± 20% Unit current draw (TX): 2.5 W max Unit current draw (RX): 3.5 W max (without load) Outputs: 2 PNP Short-circuit protection: 1.4 A max Output current: 0.5 A max / each output Output voltage - status ON: Vdd - 1 V min Output voltage - status OFF:...

  • Page 48: List Of Available Models

    Instruction Manual Safety Light Curtain SC4 11. List of Available Models Protected height Response time Resolution Model No beams (mm) (msec) (mm) SC4-ED-14-150-D6 SC4-ED-14-300-D6 SC4-ED-14-450-D6 SC4-ED-14-600-D6 SC4-ED-14-750-D6 SC4-ED-14-900-D6 SC4-ED-14-1050-D6 1050 SC4-ED-14-1200-D6 1200 SC4-ED-30-300-D19 SC4-ED-30-450-D19 SC4-ED-30-600-D19 SC4-ED-30-750-D19 SC4-ED-30-900-D19 SC4-ED-30-1050-D19 1050 SC4-ED-30-1200-D19 1200 SC4-ED-30-1350-D19 1350...
  • Page 49 Instruction Manual Safety Light Curtain SC4 PFHd MTTFd Product SIL CL (1/h) (years) (years) SC4-ED-14-150-D6 2,64E-09 98,80% 99,30% SC4-ED-14-300-D6 2,64E-09 98,80% 99,30% SC4-ED-14-450-D6 2,64E-09 98,80% 99,30% SC4-ED-14-600-D6 2,64E-09 98,80% 99,30% SC4-ED-14-750-D6 2,64E-09 98,80% 99,30% SC4-ED-14-900-D6 2,64E-09 98,80% 99,30% SC4-ED-14-1050-D6 2,64E-09 98,80% 99,30% SC4-ED-14-1200-D6...

  • Page 50: Overall Dimensions

    Instruction Manual Safety Light Curtain SC4 12. Overall Dimensions M2 n°3 32.3 50.5 Model SC4-ED-14-150-D6 233.3 153.3 SC4-ED-14-300-D6 383.2 303.2 SC4-ED-14-450-D6 533.2 453.3 SC4-ED-14-600-D6 683.2 603.2 SC4-ED-14-750-D6 833.2 753.3 SC4-ED-14-900-D6 983.2 903.2 SC4-ED-14-1050-D6 1133.2 1053.2 SC4-ED-14-1200-D6 1283.3 1203.3 SC4-ED-14-1350-D6 1433.2 1353.2 Model SC4-ED-30-300-D19...
  • Page 51 Instruction Manual Safety Light Curtain SC4 13. Accessories Model Description SC FB4P Std mounting brackets 4 pcs kit  SC AV4P Anti Vibration supports 4 pcs kit  SC AV6P Anti Vibration supports 6 pcs kit  SC OS4P Orientable Supports 4 pcs kit  SC OS6P Orientable Supports 6 pcs kit 13.1.

  • Page 52: Angled Fixing Bracket Mounting

    Instruction Manual Safety Light Curtain SC4 Angled Fixing Bracket Mounting Angled xing bracket Angled xing bracket + Adjustable support Angled xing bracket + Adjustable support Angled xing bracket + Adjustable support + Antivibration support Specifications are subject to change without notice. Pictures are just an example. For special features and/or customization, please ask to our sales network. 08/11/2013...
  • Page 53 Instruction Manual Safety Light Curtain SC4 13.2. Test Piece Model Description SC TP14  Test Piece Ø 14mm L = 300mm SC TP30  Test Piece Ø 30mm L = 300mm 13.3. Connection Cables Specifications are subject to change without notice. Pictures are just an example. For special features and/or customization, please ask to our sales network. 08/11/2013...
  • Page 54 Instruction Manual Safety Light Curtain SC4 14. Glossary ACTIVE 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.
  • Page 55 Instruction Manual Safety Light Curtain SC4 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 (OSSD): part of the ESPE connected to machine control system.
  • Page 56 OUR SALES NETWORK IN AMERICA USA - Carlo Gavazzi Inc. CANADA - Carlo Gavazzi Inc. MEXICO - Carlo Gavazzi Mexico S.A. de C.V. BRAZIL - Carlo Gavazzi Automação Ltda. 750 Hastings Lane, 2660 Meadowvale Boulevard, Calle La Montaña no. 28, Fracc. Los Pastores Avenida Brig.

This manual is also suitable for:

Sense sc4-ed-14-150-d6Sense sc4-ed-14-300-d6Sense sc4-ed-14-450-d6Sense sc4-ed-14-600-d6Sense sc4-ed-14-750-d6Sense sc4-ed-14-900-d6 ... Show all

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