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MLC 530 SPG Safety Light Curtains S A F E I M P L E M E N T A T I O N A N D O P E R A T I O N O r i g i n a l o p e r a t i n g i n s t r u c t i o n s...
Calculation of safety distance S for parallel approach to the protective field .... 41 6.1.4 Minimum distance to reflective surfaces ................ 42 6.1.5 Resolution and safety distance during fixed blanking ............ 43 6.1.6 Preventing mutual interference between adjacent devices .......... 44 Leuze electronic MLC 530 SPG...
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11.3 Error messages 7-segment display .................. 69 Disposal ....................... 74 Service and support ................... 75 Technical data ..................... 76 14.1 General specifications ...................... 76 14.2 Dimensions and weights ....................... 78 14.3 Dimensioned drawings: Accessories .................. 80 Order guide and accessories................ 83 EC Declaration of Conformity................ 89 Leuze electronic MLC 530 SPG...
LED, display element in transmitter and receiver Brief description of the safety sensor, consisting of transmitter and receiver MTTF Mean time to dangerous failure (Mean Time To dangerous Failure) OSSD Safety-related switching output (Output Signal Switching Device) Leuze electronic MLC 530 SPG...
They replace neither testing of the complete machine or system prior to initial commissioning nor their peri- odic testing by a qualified person (see chapter 2.2 "Necessary competencies"). The checklists contain mini- mum testing requirements. Depending on the application, other tests may be necessary. Leuze electronic MLC 530 SPG...
• The safety sensor must be inspected regularly by a competent person to ensure proper integration and mounting (see chapter 2.2 "Necessary competencies"). • The safety sensor must be exchanged after a maximum of 20 years. Repairs or the exchange of wear parts do not extend the mission time. Leuze electronic MLC 530 SPG...
• In addition, a task related to the subject matter is performed in a timely manner and knowledge is kept up to date through continuous further training ‑ Competent person in terms of the German Betrieb- ssicherheitsverordnung (Ordinance on Industrial Safety and Health) or other national legal regulations. Leuze electronic MLC 530 SPG...
• Periodic testing by a competent person (see chapter 2.2 "Necessary competencies") Disclaimer The liability of Leuze electronic GmbH + Co. KG is to be excluded in the following cases: • Safety sensor is not used as intended. • Safety notices are not adhered to.
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During the SPG process, an interruption of up to 60 s is possible (see chapter 4.6 "Smart Process Gating"). Optically active area, housed in yellow Synchronization beams Fig. 3.1: Transmitter-receiver system Leuze electronic MLC 530 SPG...
Device model Device type Device plug MLC 500 Transmitter 5-pin MLC 530 SPG Extended receiver, Smart Process 8-pin Gating Display elements The display elements of the safety sensors simplify start-up and fault analysis. 3.4.1 Operating indicators on the MLC 500 transmitter...
Three LEDs and a 7-segment display for visualizing the operating state are located on the receiver: LED1, red/green LED2, yellow LED3, blue OSSD icon RES icon Blanking/SPG icon 7‑segment display Fig. 3.4: Indicators on the MLC 530 SPG receiver Tab. 3.4: Meaning of the LEDs on the receiver Color State Description Red/green Device switched off OSSD off Red, flashing slowly (approx. 1 Hz)
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In the case of blocking errors, the voltage supply must be separated and the cause of the error must be eliminated. Before switching on again, the steps taken before initial commission- ing must be repeated (see chapter 9.1 "Before the initial start-up and following modifications"). Leuze electronic MLC 530 SPG...
At least one, but not all beams in the beam area are uninterrupted. Switched off All beams in the beam area are interrupted. When the protective field has been free for about 5 s, the device switches back to the display of the operat- ing mode. Leuze electronic MLC 530 SPG...
Risk of death if start/restart is operated unintentionally! Ä Ensure that the reset button for unlocking the start/restart interlock cannot be reached from the danger zone. Ä Before unlocking the start/restart interlock, make certain that no people are in the danger zone. Leuze electronic MLC 530 SPG...
Signal output The signal output outputs 24 V on a valid gating sequence. Flashing occurs in the event of a faulty gating sequence, e.g., if no protective field violation occurs after 4 s. Leuze electronic MLC 530 SPG...
+ 1 beam. On the borders of the blanked ob- ject, the resolution is reduced correspondingly by 2 beams. Activation of the function Select operating mode 1, 5 or 6 (see chapter 7 "Electrical connection"). Fig. 4.1: Fixed blanking: mechanical locks prevent side access to the protective field Leuze electronic MLC 530 SPG...
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LED switches off. During teaching, the object size detected can vary by no more than one beam. Otherwise teaching is ended with the U71 user message (see chapter 11.1 "What to do in case of failure?"). Leuze electronic MLC 530 SPG...
4 s after the CS switching signal is applied. SPG active Switching signal from the PLC Protective field interrupted Gating active active t < 4 s t = 1 s or 2 s < 200 mm Fig. 4.3: SPG principle Leuze electronic MLC 530 SPG...
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System process OSSD Transport material Dot-dashed MLC 530 SPG system limit The CS switching signal can be supplied by a standard PLC or by a safety PLC, whereby various safety levels can be reached (see following table). Tab. 4.2: Dependence of the safety level on the used control Safety Integrity Level in accor- Max.
NOTICE Transmitter and receiver of the protective device must be mounted in such a way that they can- not be pushed or damaged by the transported goods. Leuze electronic MLC 530 SPG...
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• The entire protective field is clear for longer than 1 s (operating mode 5) or 2 s (operating mode 1 or 6). • The signals from the protective field and CS are both inactive for longer than 0.1 s. Leuze electronic MLC 530 SPG...
Switching signal from the PLC Timer halt signal from the PLC Protective field interrupted Gating active active Antivalent signal change between CS and TH < 4 s 2 s < 20 s < 10 min Fig. 4.4: Operating mode 1 (qualified stop) Leuze electronic MLC 530 SPG...
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Switching signal from the PLC Timer halt signal from the PLC Protective field interrupted Gating active active Antivalent signal change between CS and TH < 4 s Fig. 4.5: Operating mode 1 (qualified stop) between 1 and 2 Leuze electronic MLC 530 SPG...
The timeout of 10 min can optionally be extended by another control signal (TH timer halt signal) by the PLC to up to 100 h. If this signal is not used, the timer halt input must be wired to 0 V. Leuze electronic MLC 530 SPG...
Ä The transmitter, receiver, pendulum flap/door must be protected against damage, e.g., to prevent warping or slipping. Ä The pendulum flap must not be made of transparent material; torsion must safely interrupt the corresponding protective field area. Leuze electronic MLC 530 SPG...
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TH signals, see figure. active Switching signal from the PLC Timer halt signal from the PLC Antivalent signal change between CS and TH Protective field interrupted Gating active active < 4 s < 2 s < 20 s < 10 min Fig. 4.7: Operating mode 6 (qualified stop) Leuze electronic MLC 530 SPG...
SPG, i.e., CS switches from 0 V to +24 V and TH from +24 V to 0 V. In the event of a faulty control, the re- ceiver switches to the interlock state (E69). NOTICE If this signal is not used, the timer halt input must be wired to 0 V. Leuze electronic MLC 530 SPG...
P-Mode active Switching signal from the PLC Restart button Protective field interrupted P-mode Protective mode Gating active active < 4 s < 1 h Fig. 4.10: Gating sequence reset Leuze electronic MLC 530 SPG...
If, after the button is pressed for the second time, a valid SPG state is present (CS switching signal is applied, protective field interrupted), the initiated SPG sequence is continued. The ML signal output alternately delivers 0 V and 24 V until the OSSDs are switched on again. Leuze electronic MLC 530 SPG...
If an internal or external error is detected by the receiver, it goes into the interlock state (see chapter 11.1 "What to do in case of failure?"). After trouble shooting acknowledge with the reset button or alternatively by switching the voltage supply on and off. Leuze electronic MLC 530 SPG...
Applications The safety sensor only creates square protective fields. Access guarding with SPG Typical application areas for the MLC 530 SPG for material infeed into or out of danger zones are in the au- tomotive and intralogistics sectors. Fig. 5.1: Smart Process Gating (SPG) at automotive production lines Fig. 5.2:...
Risk of injury due to inadmissible application of blanking! Blanking is not permitted with danger zone guarding since the blanked areas would form acces- sible bridges to the danger zone. Ä Do not use blanking for danger zone guarding. Leuze electronic MLC 530 SPG...
6.1.1 Calculation of safety distance S NOTICE When using blanking, observe the necessary additional distances to the safety distance (see chapter 6.1.5 "Resolution and safety distance during fixed blanking"). Leuze electronic MLC 530 SPG...
Response time of the protective device Response time of the safety relay Stopping time of the machine [mm] Additional distance for point of operation guarding with approach reaction with resolutions of 14 to 40 mm, d = resolution of protective device C = 8 × (d - 14) mm Leuze electronic MLC 530 SPG...
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[mm] The safety light curtain with a 40 mm resolution is thus suitable for this application. NOTICE For the calculation with K = 2000 mm/s, safety distance S equals 736 mm. The adoption of ap- proach speed K = 1600 mm/s is therefore permitted. Leuze electronic MLC 530 SPG...
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Height b of the upper edge of the protective field of the electro-sensitive protective of the equipment point of 1000 1100 1200 1300 1400 1600 1800 2000 2200 2400 2600 opera- tion Additional distance C to the danger zone [mm] [mm] 2600 2500 2400 Leuze electronic MLC 530 SPG...
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ð In this line, go to the left column: here you will find the permitted height of the point of operation. Ä Now calculate safety distance S using the general formula acc. to EN ISO 13855 (see chapter 6.1.1 "Calculation of safety distance S"). ð The larger of the two values S and S is to be used. Leuze electronic MLC 530 SPG...
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Depending on the machine construction, stepping behind protection, e.g. using a second hori- zontally arranged safety light curtain, is necessary. In most cases, it will be more appropriate to choose a longer safety light curtain which makes the additional distance C equal to 0. Leuze electronic MLC 530 SPG...
The following changes should now be taken into account in this example of the application conditions: Small parts are occasionally thrown out of the machine; these can fall through the protective field. This should not trigger the safety function. In addition, the installation height is increased to 300 mm. Leuze electronic MLC 530 SPG...
131 mm 20 m 25 m 10 m 15 m Required minimum distance to reflective surfaces [mm] Protective field width [m] Fig. 6.3: Minimum distance to reflective surfaces as a function of the protective field width Leuze electronic MLC 530 SPG...
850 mm 90 mm 283 mm 850 mm WARNING Faulty application of blanking functions may result in serious injury! Ä Note that the additional distances to the safety distance may require additional measures be taken for preventing stepping behind. Leuze electronic MLC 530 SPG...
The transmitter of one system can influence the receiver of the other system. Ä Prevent optical crosstalk between adjacent devices. Ä Mount adjacent devices with a shield between them or install a dividing wall to prevent mutual interfer- ence. Leuze electronic MLC 530 SPG...
After mounting, you can electrically connect (see chapter 7 "Electrical connection"), start up, align (see chapter 8 "Starting up the device"), and test (see chapter 9.1 "Before the initial start-up and following modi- fications") the safety sensor. Leuze electronic MLC 530 SPG...
Can reflection caused by the installation site be ruled out? Also observe the additional SPG-specific information (see chapter 4.6 "Smart Process Gating"). NOTICE If you answer one of the items on the checklist above with no, the mounting location must be changed. Leuze electronic MLC 530 SPG...
M6 screws. Sliding in the direction of slot to set the height is possible, but turning, tilting and pitching is not. Fig. 6.7: Mounting via sliding blocks BT-NC60 Leuze electronic MLC 530 SPG...
For increased mechanical loads, mounting brackets are also available in a vibration-damped version (BT-2HF-S) (see chapter 15 "Order guide and accessories"). Fig. 6.8: Mounting via swivel mount BT-2HF 6.2.5 Fastening via BT-2SB10 swiveling mounting brackets Fig. 6.9: Mounting via swiveling mounting brackets BT-2SB10 Leuze electronic MLC 530 SPG...
Ä Make sure that reflections on the machine table are prevented reliably. Ä After mounting and every day after that, check the detection capability of the safety sensor in the entire protective field using a test rod (see chapter 9.3.1 "Checklist – periodically by the operator"). Leuze electronic MLC 530 SPG...
NOTICE Reset Pin1 of the receiver is a clocked input and output. It is thus not possible to couple the reset sig- nal with other devices. This can result in an erroneous, automatic reset trigger. Leuze electronic MLC 530 SPG...
The polarity of the supply voltage selects the transmission channel of the transmitter: • VIN1 = +24 V, VIN2 = 0 V: transmission channel C1 • VIN1 = 0 V, VIN2 = +24 V: transmission channel C2 The wiring of pin 4 determines the transmitting power and thereby the range: • Pin 4 = +24 V: standard range • Pin 4 = 0 V or open: reduced range Leuze electronic MLC 530 SPG...
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MLCx00T + 24V + 24V + 24V + 24V MLCx00T MLCx00T Transmission channel C1, reduced range Transmission channel C1, standard range Transmission channel C2, reduced range Transmission channel C2, standard range Fig. 7.2: Connection examples transmitter Leuze electronic MLC 530 SPG...
Electrical connection MLC 500 transmitter MLC 530 SPG receiver Control PLC Connection cable CB-M12-10000E-5GF Connection cable CB-M12-10000E-8GF Fig. 7.7: Operating mode 5: connection example with Smart Process Gating (SPG) Operating mode 6 (partial gating) The following functions can be selected via external wiring: •...
• the transmitter and receiver are arranged parallel to each other, i.e. they are the same distance from each other at the beginning and end of the device. Alignment can be performed with a clear protective field by observing the LEDs and the 7-segment display (see chapter 3.4 "Display elements"). Leuze electronic MLC 530 SPG...
• Starting at 30 s: a +24 V short circuit is assumed on the reset input and the receiver switches to the in- terlock state (see chapter 11.1 "What to do in case of failure?"). NOTICE An individual acknowledgement unit must be provided for each MLC 530 receiver. Leuze electronic MLC 530 SPG...
Ä Before unlocking the start/restart interlock, make certain that no people are in the danger zone. Depending on whether or not the synchronization beams are occupied, an SPG restart (see chapter 4.6.9 "SPG restart") or override (see chapter 4.6.10 "Override") is to be performed. Leuze electronic MLC 530 SPG...
Initial situation Bring objects into the protective field Start teaching - activate and release key switch End teaching - activate and release key switch Fig. 8.1: Teaching of fixed blanking areas Leuze electronic MLC 530 SPG...
Completing the checklist does not replace testing by a qualified person (see chapter 2.2 "Necessary competencies")! Ä If you answer one of the items on the following check list with no, the machine must no longer be operated. Ä IEC/TS 62046 contains additional recommendations on testing protective devices Leuze electronic MLC 530 SPG...
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Are changes to the safety function (e.g.: blanking, protective field switchover) not easy to achieve through tampering? Are settings that could result in an unsafe state possible only by means of key, password or tool? Are there incentives that pose stimulus for tampering? Leuze electronic MLC 530 SPG...
Unpredictable machine behavior during the test may result in serious injury! Ä Make certain that there are no people in the danger zone. Ä Before they begin work, train the operators on their respective tasks and provide suitable test objects and an appropriate test instruction. Leuze electronic MLC 530 SPG...
– are the obviously dangerous machine parts stopped with- out noticeable delay? Protective device with presence detection: the protective field is interrupted with the test object – does this prevent operation of the obviously dangerous machine parts? Leuze electronic MLC 530 SPG...
• The system is safely shut down and protected against restart. Ä Clean the safety sensor periodically depending on the degree of contamination. NOTICE Prevent electrostatic charging of the front screens! Ä To clean the front screens of transmitter and receiver, use only damp cloths. Leuze electronic MLC 530 SPG...
Ä Analyze and eliminate the cause of the fault using the following table. Ä If you are unable to rectify the fault, contact the Leuze electronic branch responsible for you or call the Leuze electronic customer service (see chapter 13 "Service and support").
Cross connection between Check the wiring between OSSD1 OSSD switches off OSSD1 and OSSD2 and OSSD2. Overload on OSSD1 Check the wiring or exchange the OSSD switches off connected component (reducing the load). Leuze electronic MLC 530 SPG...
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Actuation duration (2.5 min) Press the reset button. If the OSSD switches off exceeded for reset button or restart is unsuccessful, check the cable short circuited wiring of the reset button. Leuze electronic MLC 530 SPG...
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Signal error: CS/TH antiva- Check CS/TH signal sequence OSSD switches off. lence violated on qualified stop (operating mode 1 or 6) Restart interlock locked Unlocking restart interlock OSSD switches off. (OSSD off) before SPG start (CS is high) Leuze electronic MLC 530 SPG...
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Eliminate the cross connection be- OSSD remains off. at the same time as a signal tween the signal lines and press Restart interlock line (cross connection to RES the reset button again. not reset. input). Leuze electronic MLC 530 SPG...
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CS signal drop without protec- Check CS signal sequence OSSD remains on. tive field violation One of the top four beams was Remove object from protective OSSD switches off. interrupted in operating field and restart the receiver mode 6 Leuze electronic MLC 530 SPG...
Service and support Service and support 24-hour on-call service at: +49 7021 573-0 Service hotline: +49 7021 573-123 E-mail: service.protect@leuze.de Return address for repairs: Servicecenter Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen/Germany Leuze electronic MLC 530 SPG...
-30 … +55 °C Ambient temperature, storage -30 … 70 °C Ambient temperature, MLC xxx/V operation 0 … 55 °C Relative humidity (non-condensing) 0 … 95 % Vibration resistance 50 m/s acceleration, 10 - 55 Hz in acc. with EN IEC 60068-2-6; 0.35 mm amplitude Shock resistance 100 m/s acceleration, 16 ms acc. to EN IEC 60068-2-6 Leuze electronic MLC 530 SPG...
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120 kΩ resistor to U . A down- stream safety PLC must not de- tect this as a logi- cal “1”. Load capacity 0.3 µF Load inductivity 2 H Leuze electronic MLC 530 SPG...
Dimensions and weights are dependent on • the resolution • the length Fig. 14.1: Dimensions of transmitter and receiver Effective protective field height H goes beyond the dimensions of the optics area to the outer borders of the circles labeled with R. Leuze electronic MLC 530 SPG...
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2 68096002 1800 C500T14300/30180 68096005 1800 C500T14300/90180 68096003 2250 C500T14300/90225 Tab. 15.5: Part numbers of MLC 530 SPG receiver depending on resolution and protective field height Protective field height 30 mm 40 mm 90 mm hhhh [mm] MLC530R30-hhhh-SPG MLC530R40-hhhh-SPG MLC530R90-hhhh-SPG 68009301 68009401 68009302...
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Connection cable, 5-pin, 10 m long 678057 CB-M12-15000E-5GF Connection cable, 5-pin, 15 m long 678058 CB-M12-25000E-5GF Connection cable, 5-pin, 25 m long Connection cables for MLC 530 SPG receiver, shielded 50135128 KD S-M12-8A-P1-050 Connection cable, 8-pin, 5 m long 50135129 KD S-M12-8A-P1-100 Connection cable, 8-pin, 10 m long...
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529613 UM60-1350 Deflecting mirror, mirror length 1410 mm 529615 UM60-1500 Deflecting mirror, mirror length 1560 mm 529616 UM60-1650 Deflecting mirror, mirror length 1710 mm 529618 UM60-1800 Deflecting mirror, mirror length 1860 mm 430105 BT-2UM60 Mounting bracket for UM60, 2x Leuze electronic MLC 530 SPG...
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Alignment aids 560020 LA-78U External laser alignment aid 520004 LA-78UDC External laser alignment aid for fastening in De- vice Column 520101 AC-ALM-M Alignment aid Test rods 349945 AC-TR14/30 Test rod 14/30 mm 349939 AC-TR20/40 Test rod 20/40 mm Leuze electronic MLC 530 SPG...
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