Page 4
European directive. Since the directives and applicable standards are subject to continuous updates, and since Datalogic promptly adopts these updates, therefore the EU declaration of conformity is a living document. The EU declaration of conformity is available for competent authorities and customers through Datalogic commercial reference contacts.
SG4 BASE GENERAL INFORMATION ......................7 General description ........................7 Package contents ........................8 New features compared to SE4-PLUS (EDM) ................9 How to choose the device ......................10 1.4.1 Detection capability ........................10 1.4.2 Height of the detection zone ..................... 11 1.4.3 Minimum installation distance ....................
Page 6
SG4 BASE ACCESSORIES ........................54 15.1 (ST-KSTD) Metal angled fixing bracket ..................54 15.2 (ST-KPxMP) Plastic angled fixing bracket ................56 15.3 (ST-K4ROT) Metal rotating fixing bracket ................. 58 15.4 (SG-PSB) Protective stands ..................... 59 15.5 (SG-P) Plate kit for protective stands ..................60 15.6 (SE-S) Columns and floor stands .....................
SG4 BASE 1 GENERAL INFORMATION 1.1 GENERAL DESCRIPTION The safety light curtains 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.
As the required knowledge may not be completely included in this manual, we suggest the customer to contact Datalogic Technical Service for any necessary information relative to the functioning of the light curtains and the safety rules that regulate the correct installation (cfr. USER INTERFACE AND DIAGNOSTICS page 42).
SG4 BASE 1.3 NEW FEATURES COMPARED TO SE4-PLUS (EDM) With respect to SE4-PLUS (EDM) series, the SG4 BASE safety light curtain series presents new important features: Higher operating distance Shorter response time (see cfr.TECHNICAL DATA page 49) Range enlargement with 150 to 1800 mm controlled heights ...
SG4 BASE 1.4 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. 1.4.1 Detection capability The detection capability (or resolution) of the device is the minimum diameter that an opaque object must have in order to obscure at least one of the beams that constitute the detection zone and to actuate the sensing device.
Height of the detection zone The controlled height is the height protected by the safety light curtain. Fig 2 - Detection Zone Controlled height Model 14mm Model 30mm Hp (mm) SG4-14-015-OO-E/X SG4-30-015-OO-E/X SG4-14-030-OO-E/X SG4-30-030-OO-E/X SG4-14-045-OO-E/X SG4-30-045-OO-E/X SG4-14-060-OO-E/X SG4-30-060-OO-E/X SG4-14-075-OO-E/X SG4-30-075-OO-E/X...
SG4 BASE 1.4.3 Minimum installation distance The safety device must be positioned at a specific safety distance (Fig 3 - page 12). This distance must ensure that the dangerous area cannot be reached before the dangerous motion of the machine has been stopped by the Safety Control System. The safety distance depends on 4 factors, according to the EN ISO 13855 Standard: ...
Page 13
SG4 BASE 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). If the safety light curtain must be mounted in a horizontal position (Fig 4 - page 13) the distance between the dangerous area and the most distant optical beam must be equal to the value calculated using the following formula:...
SG4 BASE 1.5 TYPICAL APPLICATIONS Example 1: Operating point protection on drilling machines The operator positions the part and takes it back after machining. The operator must be protected against possible abrasions while working. Solution: SG 14mm safety light curtain is especially suitable for this kind of application, which requires the installation of the device directly on the machine.
Page 15
SG4 BASE 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: SG 30mm safety light curtain is especially suitable for this kind of application, which require the installation of the device directly on the machine.
SG4 BASE 1.6 SAFETY INFORMATION For a correct and safe use of the safety light curtains, 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 paragraph Minimum installation distance page 12 and during all working cycle phases.
The presence of intense electromagnetic disturbances could affect device’s correct operation. This condition shall be carefully assessed with the advice of DATALOGIC Technical Service. The operating distance of the device can be reduced in presence of smog, fog or airborne dust.
SG4 BASE 2.2 GENERAL INFORMATION ON DEVICE POSITIONING The safety light curtain should be carefully positioned in order to provide the necessary protection. Access to the dangerous area must only be possible by passing through the protecting safety light beams. Fig 9 - page 18 shows some examples of possible access to the machine from the top and the bottom sides.
SG4 BASE 2.2.1 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 affect the recognition of an object inside the controlled area. Moreover, 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.
Page 20
SG4 BASE for ESPE Type 4 EAA = 5° (α = ± 2.5°) Fig 14 - Minimum distance from reflective surface The formula to get Dsr is the following: For ESPE Type 4: Dsr (m) = 0.13 for operating distance < 3 m Dsr (m) = 0.5 x operating distance (m) x tg 2a for operating distance >= 3 m 20/74...
SG4 BASE 2.2.2 Distance between homologous devices The following graphic shows the distance from the interfering devices (Ddo) according to the operating distance (Ddo) of the couple ( TXA – RXA ). 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.
Page 22
SG4 BASE The figure provides two examples: Fig 17 - Recommended positioning for homologous devices If two light curtains have to be mounted near each other as reported in the first example of Fig 17 - page 22. 22/74...
SG4 BASE 2.2.3 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 pointing to the same direction. The configurations shown in the figure must be avoided: Fig 18 - Wrong light curtain TX-RX orientations 23/74...
Even very small displacements of the mirror is enough to lose alignment. The use of DATALOGIC laser pointer accessory is recommended under these conditions. The minimum safety distance (S) must be respected for each single section of the beams.
SG4 BASE 2.2.5 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.
SG4 BASE 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 cfr.TECHNICAL DATA page 49).
Page 27
SG4 BASE Anti-vibration shock absorbers together with fixing brackets are recommended in applications with particularly strong vibrations to reduce the impact of the vibrations. Fig 23 - Fixing brackets Fig 23 - page 27 and table below show the recommended mounting positions according to the safety light curtain length.
SG4 BASE 4 ELECTRICAL CONNECTIONS 4.1 PIN-OUT AND CONFIGURATION PIN CONNECTION 4.1.1 MODELS SG4-xx-xxx-OO-X 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-poles connector is used, while for emitter a M12 4-poles connector is used. RECEIVER (RX): Fig 25 - Receiver brown...
SG4 BASE 4.1.2 MODELS SG4-xx-xxx-OO-E 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. RECEIVER (RX): Fig 27 - Receiver white...
Page 30
SG4 BASE Function Connection to Status +24 VDC TEST ON TEST Not connected or 0V TEST OFF +24 VDC RESET ON RESET Not connected or 0V RESET OFF +24 VDC SHORT (9 m) SELECT RANGE Not connected or 0V LONG (19 m) Normally closed contact for a force-guided relay +24 VDC...
SG4 BASE 4.2 NOTES ON CONNECTIONS For the correct operation of the 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.
Page 32
SG4 BASE Connect both OSSDs to the device to control. Failure to connect an OSSD to the activating device jeopardizes the system safety degree that the light curtain has to control. Fig 30 - OSSDs connection Fig 31 - Behaviour of OSSDs 32/74...
SG4 BASE 4.3 EARTH CONNECTION Safety light curtain units are preset for easy ground connection. A special compartment, positioned onto caps and marked with the special symbol shown in Fig 32 - page 33, allows connection with ground cable by means of an additional screw coming with the equipment.
SG4 BASE 5 ALIGNMENT PROCEDURE The alignment between the emitting and the receiving units is necessary to obtain the correct operation 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.
SG4 BASE 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: SG4-xx-xxx-OO-X: SAFE Display Condition Alignment status NORMAL OP.
Page 36
SG4 BASE SG4-xx-xxx-OO-E: LED yellow LED yellow Alignment Display Condition status NORMAL OP. SAFE (BREAK) SYNC LAST SYNC NOK LAST NOK SYNC OK aligned LAST NOK SYNC OK LAST OK aligned MIDDLE OPTICS NOK aligned Each beam is over the min. operating threshold and the MINIMUM number of beam over...
SG4 BASE 6 FUNCTIONS SETTING 6.1 RESET MODE SG4-xx-xxx-OO-E models: 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. Carefully assess risk conditions and reset modes. In 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 12 - page 18).
SG4 BASE 7 FUNCTIONS This chapter deals with all the functions of the light curtain. 7.1 TEST The TEST function can be activated by keeping a normally open external contact (TEST push-button), open for at least 0.5 seconds. The TEST signal is active high. Fig 36 - Test timings 38/74...
SG4 BASE 7.2 RESET 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, OSSD error EDM or manual/automatic restart selection (see cfr.USER INTERFACE AND DIAGNOSTICS page 42). The RESET function can be activated by keeping a normally open external contact (RESET/RESTART push- button), open for at least 5 seconds.
SG4 BASE 7.3 EDM 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). ...
SG4 BASE 7.4 ALIGNMENT AID FUNCTION Light curtain is equipped with a system which informs the operator on the alignment obtained. The alignment function can be activated when powering the device, by keeping the normally open RESET/RESTART contact closed for at least 0.5 seconds (see Fig 30 - page 32). Fig 40 - When the best alignment has been reached, restart the device to return to the standard operating mode, by powering off and on again the Rx unit.
SG4 BASE 8 USER INTERFACE AND DIAGNOSTICS 8.1 USER INTERFACE Curtain operating status is displayed onto a 1-digit display both on receiver and emitter. Light curtain also has four LEDs on the receiver and two LEDs on the emitter. Fig 41 - page 42 shows all signalling LEDs modes: OFF, ON and BLINKING. Fig 41 - Signalling LEDs 42/74...
OSSD error they are not in contact with one another or (red ON) with the supply cables, then Reset. If the failure continues contact DATALOGIC. Switch OFF and switch ON the power supply Internal error Error status circuit. If the failure continues contact (red ON) DATALOGIC.
Page 44
OSSD error they are not in contact with one another or Error status (red ON) with the supply cables, then Reset. If the failure continues contact DATALOGIC. Switch OFF and switch ON the power supply Internal error circuit. (red ON) If the failure continues contact DATALOGIC.
Page 45
Check and repair DIGIT Switch OFF and switch ON the power supply Internal error circuit. (green ON) If the failure continues contact DATALOGIC. Switch OFF and switch ON the power supply Optical error Error status circuit. (green ON) If the failure continues contact DATALOGIC.
SG4 BASE 9 PERIODICAL CHECKS The following is a list of recommended check and maintenance operations that should be periodically carried-out by qualified personnel (cfr. Controls after first installation page 24) Check that: The ESPE stays locked ( ) during beam interruption along the entire protected area, using the suitable “Test Piece”...
The safety devices fulfil their safety function only if they are correctly installed, in accordance with the Standards in force. If you are not certain to have the expertise necessary to install the device in the correct way, DATALOGIC is at your disposal to carry out the installation.
10.1 PRODUCT DISPOSAL Under current Italian and European laws, DATALOGIC is not obliged to take care of product disposal at the end of its life. DATALOGIC recommends to dispose of the product in compliance with local laws or contact authorised waste collection centres.
SG4 BASE 11 TECHNICAL DATA SAFETY CATEGORY: Type 4 (rif. EN 61496-1: 2013) SIL 3 (rif. EN 61508) SIL CL 3 (ref. EN 62061:2005/A2: 2015) PL e, Cat. 4 (rif. EN ISO 13849-1: 2015) PFHd [1/h] = 2,64E-09 MTTFd [years] = 444 ELECTRICAL DATA Power supply (Vdd): 24 VDC ±...
SG4 BASE 15.4 (SG-PSB) PROTECTIVE STANDS MODEL DESCRIPTION L (mm) CODE SG-PSB 600 Protective stand H=600 mm 95ASE2240 SG-PSB 1000 Protective stand H=1000 mm 1000 95ASE2250 SG-PSB 1200 Protective stand H=1200 mm 1200 95ASE2260 SG-PSB 1650 Protective stand H=1650 mm 1650 95ASE2270 SG-PSB 1900...
SG4 BASE 15.6 (SE-S) COLUMNS AND FLOOR STANDS MODEL DESCRIPTION L(mm) X (mm) CODE SE-S 800 Column and floor stand H= 800 mm 30x30 95ACC1730 SE-S 1000 Column and floor stand H= 1000 mm 1000 30x30 95ACC1740 SE-S 1200 Column and floor stand H= 1200 mm 1200 30x30 95ACC1750...
SG4 BASE 15.7 (SG-DM) DEVIATING MIRRORS MODEL DESCRIPTION L1 (mm) L2 (mm) L3 (mm) CODE SG-DM 600 Deviating mirror version 600 mm 95ASE1680 SG-DM 900 Deviating mirror version 900 mm 95ASE1690 SG-DM 1200 Deviating mirror version 1200 mm 1145 1180 95ASE1700 SG-DM 1650 Deviating mirror version 1650 mm...
Page 63
SG4 BASE Mounting kit for SG-DM with SE-S column and floor stands MODEL DESCRIPTION CODE ST-DM SG-DM mounting kit (2 pcs kit) 95ASE1940 Fig 62 - Mounting kit For each SG-DM mirror order 1 mounting kit ST-DM. Mounting kit SG-DM on SG-PSB (ST-PS-DM) MODEL DESCRIPTION CODE...
SG4 BASE 15.12 (SG-LP) LASER POINTER MODEL DESCRIPTION CODE SG-LP Laser pointer 95ASE5590 The laser pointer of the SG-LP series represents a valid alignment and installation support for the safety light curtain series. The pointer can be moved along the light curtain profile to verify the complete device alignment (top and bottom). Fig 68 - Dimensions (mm) Fig 69 - Laser pointer 68/74...
SG4 BASE 15.13 (SE-SR2) SAFETY RELAY MODEL DESCRIPTION CODE SE-SR2 Type 4 safety relay - 3 NQ 1 NC 95ACC6170 The drawing show the connection between the safety light curtain and the Type 4 safety relay of the SE-SR2 series operating in the automatic Restart mode.
SG4 BASE 16 GLOSSARY Detection zone: zone within which a specified test piece will be detected by the ESPE Safety light curtain: it is 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.
Page 71
SG4 BASE Interlock: operating state of ESPE in Manual Restart Mode when all beams are free but the Restart command hasn’t been received yet. Normal Operation: operating state of ESPE when all beams are free, OSSD LED lit GREEN in SL light curtain OSSD1 and OSSD2 are switchen ON.
Need help?
Do you have a question about the SG4-30-015-OO-E and is the answer not in the manual?
Questions and answers