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Summary of Contents for CARLO GAVAZZI SC2 Series
- 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 SC2 type 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 SC2 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 SC2 Index 1. GENERAL INFORMATION1 1.1. General description of the safety light curtains 1.1.1. Package contents 1.2. New features compared to the SB2 Series 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 SC2 10. TECHNICAL DATA 11. LIST OF AVAILABLE MODELS 12. OVERALL DIMENSIONS 13. ACCESSORIES 13.1. Angled fixing bracket 13.2. Test pieces 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...
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Page 6: General Information
1.1. General Description of the Safety Light Curtains The safety light curtains of the SC2 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. - Page 7 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 SC2 light curtains and the safety rules that regulate the correct installation (see section 8 “Periodical checks”).
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Page 8: Package Contents
Instruction Manual Safety Light Curtain SC2 1.1.1. Package Contents Package contains the following objects: • 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 angled fixing brackets for models with heights included between 1200 and 1500 mm 1.2. New Features Compared to the Former SB2 Series The SC2 safety light curtains, compared to the SB2 series, present the following new features: • Increased operating distance • Range enlargement with 300 to 1500 mm controlled heights • Reduced response times... - Page 9 Instruction Manual Safety Light Curtain SC2 1.3. How to Choose the Device 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.
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Page 10: Controlled Height
Instruction Manual Safety Light Curtain SC2 1.3.2. Controlled Height The controlled height is the height protected by the safety light curtain ( Hp ) Fig.2 The SC2 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 11: Minimum Installation Distance
Instruction Manual Safety Light Curtain SC2 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 (Electro Sensitive Protective Equipment). - Page 12 Instruction Manual Safety Light Curtain SC2 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 13 Instruction Manual Safety Light Curtain SC2 Practical examples: Let’s suppose we 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...
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Page 14: Typical Application
Instruction Manual Safety Light Curtain SC2 1.4. Typical Application The safety light curtains of the SC2 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;... - Page 15 Instruction Manual Safety Light Curtain SC2 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.
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Page 16: Safety Information
Instruction Manual Safety Light Curtain SC2 1.5. Safety Information For a correct and safe use of the safety light curtains of the SC2 series, the following points must be observed: • The stopping system of the machine must be electrically controlled. • This control system must be able to stop the dangerous movement of the machine within the total machine stopping time T as per section 1.3.3, and during all working cycle phases. -
Page 17: Installation Mode
• 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 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 18: General Information On Device Positioning
Instruction Manual Safety Light Curtain SC2 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 19 Instruction Manual Safety Light Curtain SC2 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).
- Page 20 Instruction Manual Safety Light Curtain SC2 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 compromise the recognition of an object inside the controlled area.
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Page 21: Operating Distance
Instruction Manual Safety Light Curtain SC2 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 opening angle of ESPE (EAA); in particular: for ESPE type 2 EAA = 10°... -
Page 22: Emitter And Receiver Orientation
Instruction Manual Safety Light Curtain SC2 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. - Page 23 Instruction Manual Safety Light Curtain SC2 2.2.4. Emitter and Receiver Orientation 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.
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Page 24: Use Of Deviating Mirrors
Instruction Manual Safety Light Curtain SC2 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°... - Page 25 Instruction Manual Safety Light Curtain SC2 2.2.6. Controls After 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.
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Page 26: Mechanical Mounting
Instruction Manual Safety Light Curtain SC2 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 SC2 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 SC2 Models L (mm) A (mm) B (mm) 683C (mm) SC2-AR-30-150-D19 216.3 SC2-AR-30-300-D19 366.2 SC2-AR-30-450-D19 516.3 SC2-AR-30-600-D19 666.2 SC2-AR-30-750-D19 816.3 SC2-AR-30-900-D19 966.2 SC2-AR-30-1050-D19 1116.2 SC2-AR-30-1200-D19 1266.3 SC2-AR-30-1350-D19 1416.2 1066 SC2-AR-30-1500-D19 1566.3 1166 Models L (mm) A (mm) B (mm) 683C (mm)
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Page 29: Electrical Connection
Instruction Manual Safety Light Curtain SC2 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 5-pole connector is used, while for emitter a M12 4-pole connector is used. - Page 30 Instruction Manual Safety Light Curtain SC2 4.1. Notes of Connections For the correct functioning of the SC2 safety light curtains, the following precautions regarding the electrical connections have to be respected: • 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.); Do not connect in the same multi-pole cable the OSSD wires of different light curtains;...
- Page 31 Instruction Manual Safety Light Curtain SC2 • 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 OSSD1 OSSD1 +24VDC +24VDC OSSD2 OSSD2 Fig.16 Fig.17 +24VDC +24VDC OSSD1 OSSD1 OSSD2 +24VDC +24VDC OSSD2 Fig.18 Fig.19 Specifications are subject to change without notice.
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Page 32: Earth Connection
Instruction Manual Safety Light Curtain SC2 4.2. Earth Connection SC2 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 20, allows connection with ground cable by means of an additional screw coming with the equipment. Fig.20 Ground connection configuration is the most common and guarantees the best immunity against electromagnetic disturbances. -
Page 33: Alignment Procedure
Instruction Manual Safety Light Curtain SC2 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 34 Instruction Manual Safety Light Curtain SC2 The standard installation described hereinafter is the one shown in Fig. 22, i.e. with the bar assembled with the connectors pointing down. Two yellow LEDs (p LAST, q SYNC) on SC2 receiver, facilitates the alignment procedure. During standard operation, the LEDs indicate the safety light curtain status, as shown in the table.
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Page 35: Correct Alignment Procedure
Instruction Manual Safety Light Curtain SC2 5.1. Correct 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: • Check the green LED (<) and the yellow LED ( ) on the TX unit. If ON, the emitter is running correctly; • Verify that the sensitive area from the safety light curtain is free; • Verify that one of the following conditions is present on the RX unit: 1. -
Page 36: Function Mode
Instruction Manual Safety Light Curtain SC2 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 The ESPE will automatically restart its standard operation (NORMAL OP. condition ) as soon as the object is removed. -
Page 37: Diagnostic Function
Instruction Manual Safety Light Curtain SC2 7. Diagnostic Function 7.1. 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.23 shows all signalling LEDs modes: OFF, ON and BLINKING. LED OFF LED ON LED BLINKING... -
Page 38: Diagnostic Messages
BLINKING) with the supply cables, then Reset. If the failure continues contact Carlo Gavazzi Switch OFF and switch ON the supply cir- Internal error (red ON yellow cuit; if the failure continues contact Carlo... -
Page 39: Periodical Checks
Instruction Manual Safety Light Curtain SC2 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 40: 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 41: 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 42: Technical Data
Instruction Manual Safety Light Curtain SC2 10. Technical Data The product technical specifications are given below. ELECTRICAL DATA Power supply (Vdd): 24 Vdc ± 20% Unit current draw (TX): 2 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:... -
Page 43: List Of Available Models
Instruction Manual Safety Light Curtain SC2 11. List of Available Models Protected height Number Response time Resolution Model (mm) of beams (msec) (mm) SC2-AR-30-150-D19 SC2-AR-30-300-D19 SC2-AR-30-450-D19 SC2-AR-30-600-D19 SC2-AR-30-750-D19 SC2-AR-30-900-D19 SC2-AR-30-1050-D19 1050 SC2-AR-30-1200-D19 1200 SC2-AR-30-1350-D19 1350 SC2-AR-30-1500-D19 1500 SC2-AR-90-300-D19 SC2-AR-90-450-D19 SC2-AR-90-600-D19 SC2-AR-90-750-D19 SC2-AR-90-900-D19 SC2-AR-90-1050-D19... - Page 44 Instruction Manual Safety Light Curtain SC2 PFHd MTTFd Product SIL CL (1/h) (years) (years) SC2-AR-30-150-D19 1,04E-08 97,50% 98,40% SC2-AR-30-300-D19 1,04E-08 97,50% 98,40% SC2-AR-30-450-D19 1,04E-08 97,50% 98,40% SC2-AR-30-600-D19 1,04E-08 97,50% 98,40% SC2-AR-30-750-D19 1,04E-08 97,50% 98,40% SC2-AR-30-900-D19 1,04E-08 97,50% 98,40% SC2-AR-30-1050-D19 1,04E-08 97,50% 98,40% SC2-AR-30-1200-D19...
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Page 45: Overall Dimensions
Instruction Manual Safety Light Curtain SC2 12. Overall Dimensions Model SC2-AR-30-150-D19 233.3 153.3 SC2-AR-30-300-D19 383.2 303.2 SC2-AR-30-450-D19 533.2 453.3 SC2-AR-30-600-D19 683.2 603.2 SC2-AR-30-750-D19 833.2 753.3 SC2-AR-30-900-D19 983.2 903.2 SC2-AR-30-1050-D19 1133.2 1053.2 SC2-AR-30-1200-D19 1283.3 1203.3 SC2-AR-30-1350-D19 1433.2 1353.2 SC2-AR-30-1500-D19 1583.3 1503.3 Model SC2-AR-90-300-D19 383.2... -
Page 46: Angled Fixing Bracket
Instruction Manual Safety Light Curtain SC2 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 47: Angled Fixing Bracket Mounting
Instruction Manual Safety Light Curtain SC2 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 48: Connection Cables
Instruction Manual Safety Light Curtain SC2 13.2. Test Pieces 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 49 Instruction Manual Safety Light Curtain SC2 14. Glossary ACTIVE OPTOELECTRONIC PROTECTIVE DEVICE (AOPD): its detection function is achieved thanks to the use of opto- electronic receivers and emitters detecting the optical beams interruptions inside the device caused by an opaque object present inside the specified detecting area.
- Page 50 Instruction Manual Safety Light Curtain SC2 OUTPUT SIGNAL SWITCHING DEVICE (OSSD): part of the electrosensitive protective equipment (ESPE) connected to ma- chine control system that, when the sensor is triggered during standard operating mode, is switched to the inactive status. PROTECTED AREA: area where a specified test object is detected by the ESPE.
- Page 51 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.
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