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Troubleshooting

Leuze electronic

MLC 520 EX

Troubleshooting

11.1 What to do in case of error?

After switching the safety sensor on, the display elements (see chapter 3.3) assist in checking the correct

functionality and in faultfinding.
In case of failure, you can determine the fault from the LED displays or read a message from the 7-

segment display. With the error message you can determine the cause of the error and initiate measures

to rectifying it.

11.2 Operating displays of the LEDs

Table 11.1:

Transmitter LED displays - causes and measures

NOTICE
If the safety sensor responds with an error display, you will often be able to eliminate the cause yourself.



Switch off the machine and leave it switched off.



Analyze and eliminate the cause of the fault using the following table (see table 11.1, see table 11.2,

see table 11.3).



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").

LED

State

Cause

Measure

LED1 OFF

Transmitter without sup

ply voltage

Check the power supply unit and the electri

cal connection. Exchange the power supply

unit, if applicable.

Red

Transmitter defective

Exchange the transmitter.

Содержание MLC 520

Страница 1: ...X 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 EN 2014 12 50127400 We reserve the right to make technical...

Страница 2: ...Leuze electronic MLC 520 EX 2 2014 Leuze electronic GmbH Co KG In der Braike 1 D 73277 Owen Germany Phone 49 7021 573 0 Fax 49 7021 573 199 http www leuze com info leuze de...

Страница 3: ...guarding 17 5 3 Danger zone guarding 18 6 Mounting 19 6 1 Arrangement of transmitter and receiver 19 6 1 1 Calculation of safety distance S 19 6 1 2 Calculation of safety distance SRT or SRO if prote...

Страница 4: ...al start up and following modifications 40 9 2 To be performed periodically by competent persons 41 9 3 Periodically by the operator 42 9 3 1 Checklist periodically by the operator 42 10 Maintenance 4...

Страница 5: ...are not followed DANGER Signal word for life threatening danger Indicates dangers with which serious or fatal injury is imminent if the measures for danger avoidance are not followed Symbol for tips...

Страница 6: ...o the initial start up nor their periodic testing by a competent person The checklists contain minimum testing requirements Depending on the application other tests may be necessary Safety sensor Syst...

Страница 7: ...ns and work with safety sensors Machinery directive 2006 42 EC Low voltage directive 2006 95 EC EMC directive 2004 108 EC Use of work equipment directive 89 655 EEC supplemented by directive 95 63 EC...

Страница 8: ...ear and tear do not extend the service life 2 1 2 Foreseeable misuse Any use other than that defined under the Approved purpose or which goes beyond that use is consid ered improper use In principle t...

Страница 9: ...ensors in potentially explosive areas These notices apply for devices with the following classification Table 2 1 Classification of the devices Device group Device category Equipment protection level...

Страница 10: ...t e g welding sparks warning lights 3 1 Device overview The series is characterized by three different receiver classes Basic Standard Extended with certain features and properties see table 3 1 Table...

Страница 11: ...Figure 3 1 Transmitter receiver system QR code A QR code as well as the corresponding web address are located on the safety sensor see figure 3 2 At the web address you will find device information an...

Страница 12: ...lements of the safety sensors simplify start up and fault analysis 3 3 1 Operating indicators on the MLC 520 receiver Two LEDs and a 7 segment display for showing the operating state are located on th...

Страница 13: ...State Description 1 Red green OFF Device switched off Red OSSD off Red slowly flashing approx 1 Hz External fault Red flashing fast approx 10 Hz Internal fault Green slowly flashing approx 1 Hz OSSD o...

Страница 14: ...hes to alignment mode In this mode one third of the total protective field top middle bottom is assigned to one of the three hori zontal segments and the state of this sub protective field displayed a...

Страница 15: ...hes to the ON state 4 2 EDM contactor monitoring The contactor monitoring function monitors the contactors relays or valves connected downstream of the safety sensor Prerequisite for this are switchin...

Страница 16: ...switched by changing the supply voltage polarity see chapter 7 1 1 MLC 500 transmitter The transmission channel of the receiver can be switched by changing the supply voltage polarity see chapter 7 1...

Страница 17: ...y safety distance among others see chapter 6 1 1 Calculation of safety distance S Figure 5 1 Point of operation guarding protects reaching into the danger zone e g for cartoners or filling systems Fig...

Страница 18: ...in horizontal arrangement for danger zone guarding either as stand alone device for presence monitoring or as stepping behind protection for presence monitoring e g in combination with a vertically a...

Страница 19: ...r mounting may result in serious injury The protective function of the safety sensor is only ensured if appropriately and professionally mounted for the respective intended area of application Only al...

Страница 20: ...distance for point of operation guarding with approach reaction with resolu tions of 14 to 40 mm d resolution of protective device CRT 8 d 14 mm Calculation example The feeding in area in a press with...

Страница 21: ...sing the formula acc to EN ISO 13855 K mm s 1600 T s 0 014 0 250 CRT mm 8 40 14 SRT mm 1600 mm s 0 264 s 208 mm SRT mm 631 The safety light curtain with a 40 mm resolution is thus suitable for this ap...

Страница 22: ...1000 1100 1200 1300 1400 1600 1800 2000 2200 2400 2600 Additional distance CRO to the danger zone mm 2600 0 0 0 0 0 0 0 0 0 0 0 0 2500 400 400 350 300 300 300 300 300 250 150 100 0 2400 550 550 550 5...

Страница 23: ...on from the safety sensor and additional distance CRO Height b of the upper beam of the safety sensor To be determined is the permitted height a of the point of operation In the column head look for t...

Страница 24: ...or height as possible using a horizontal safety light curtain as a replacement for a PS mat Installation height Hmin can be 0 additional distance C to the safety distance is then 1200 mm The shortest...

Страница 25: ...urfaces as a function of the protective field width S K T C WARNING Failure to maintain minimum distances to reflective surfaces may result in serious injury Reflective surfaces can indirectly deflect...

Страница 26: ...n adjacent safety sensors transmitter 1 influences receiver 2 due to incorrect mounting Mount adjacent devices with a shield between them or install a dividing wall to prevent mutual interfer ence Mou...

Страница 27: ...ensor or device column included in delivery contents After mounting you can electrically connect see chapter 7 start up align see chapter 8 Starting up the device and check see chapter 9 1 the safety...

Страница 28: ...in the direction of slot to set the height is possible but turning tilting and pitching is not Has bypassing the protective field by crawling under reaching over or jumping over been prevented or has...

Страница 29: ...holes makes it possible to lift the mounting bracket after the screws have been loosened over the connection cap Therefore the mounting brackets do not need to be removed from the wall when exchangin...

Страница 30: ...damped base for free stand ing floor mounting The range is reduced by approx 10 per deflection A laser alignment aid with red light laser is recom mended for the alignment of transmitter and receiver...

Страница 31: ...lecting mirror Figure 6 10 Arrangement with deflecting mirror for 2 side guarding of a point of operation 1 Transmitter 2 Receiver 3 UMC deflecting mirror column Figure 6 11 Arrangement with deflectin...

Страница 32: ...Signal outputs must not be used for switching safety relevant signals DANGER Faulty electrical connection in potentially explosive areas may result in serious injury Only disconnect the electrical con...

Страница 33: ...ransmission 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...

Страница 34: ...ith an 8 pin M12 connector VIN1 1 RNG 4 VIN2 3 FE 5 A1 MLCx00T n c 2 24V FE 0V 24V FE 0V 1 WH GY BU BN BK VIN1 1 RNG 4 VIN2 3 FE 5 A1 MLCx00T 24V FE 0V 24V FE 0V 2 n c 2 WH GY BU BN BK VIN2 3 RNG 4 VI...

Страница 35: ...2 Brown VIN1 supply voltage 24 V DC for transmission channel C1 0 V for transmission channel C2 3 Green IN3 control input contactor monitoring EDM 24 V DC without EDM 0 V with EDM and feedback circuit...

Страница 36: ...rcuit diagram example with downstream MSI RM2 safety relay EDM OSSD1 MSI RM2 OSSD2 Start MLCx20R Restart 0V FE 24V WH A1 A2 K3 A1 A2 K4 PK GN 1 2 1 2 BU SH 8 W1 BU SH W2 S1 A2 5 14 B3 6 Y1 BN B1 4 A3...

Страница 37: ...me height so that the front screens are directed at each other the transmitter and receiver connections point in the same direction the transmitter and receiver are arranged parallel to each other i e...

Страница 38: ...ounting height of the transmitter must be changed if applicable Repeat the process until the laser strikes the respective point of the deflecting mirror both on top and on bottom Turn tilt or pitch th...

Страница 39: ...you keep the reset button pressed longer than 4 s Starting at 4 s the reset request is ignored Starting at 30 s a 24 V short circuit is assumed on the reset input and the receiver switches to the inte...

Страница 40: ...t for integrator to be performed prior to the initial start up and following modifications Table 9 1 Checklist for integrator to be performed prior to the initial start up and following modifications...

Страница 41: ...ed start restart interlock functional Is the command device for unlocking the start restart interlock mounted in such a way that it cannot be reached from within the danger zone and so that the com pl...

Страница 42: ...be necessary under certain circumstances to check some points at longer time intervals Therefore observe the classification in Test at least and Test when possible 9 3 1 Checklist periodically by the...

Страница 43: ...suitable opaque test object Figure 9 1 Checking the protective field function with test rod only for safety light cur tains with a resolution of 14 to 40 mm Does the OSSD LED on the receiver illuminat...

Страница 44: ...amination NOTICE Faulty operation if transmitter and receiver are soiled The surfaces of the front screen of transmitters receivers and where applicable deflecting mirror must not be scratched or roug...

Страница 45: ...LED displays causes and measures NOTICE If the safety sensor responds with an error display you will often be able to eliminate the cause yourself Switch off the machine and leave it switched off Ana...

Страница 46: ...C1 Remove all objects from the protective field Align the transmitter and receiver to each other or place blanked objects correctly con cerning size and position Red slowly flashing approx 1 Hz Exter...

Страница 47: ...t 24 V at OSSD2 Check the wiring Exchange the cable if applicable Automatic reset E10 E11 OSSD error source unknown Check the wiring Exchange the cable and the receiver if neces sary Automatic reset E...

Страница 48: ...the operating mode if required and restart Locking E38 Restart interlock operating mode changed during operation Check the correctness of the selected operating mode correct the operating mode if requ...

Страница 49: ...Disposing Leuze electronic MLC 520 EX 49 12 Disposing For disposal observe the applicable national regulations regarding electronic components...

Страница 50: ...call service at 49 0 7021 573 0 Service hotline 49 0 8141 5350 111 Monday to Thursday 8 00 a m to 5 00 p m UTC 1 Friday 8 00 a m to 4 00 p m UTC 1 E mail service protect leuze de Return address for re...

Страница 51: ...ure to danger per hour PFHd 7 73x10 9 1 h Service life TM 20 years Ex device group category II 3G II 3D Ex zone 2 22 Permissible surface tempera ture T 85 T4 Ignition protection type nA non sparking t...

Страница 52: ...accordance with IEC EN 60068 2 6 Profile cross section 29 mm x 35 4 mm Dimensions see figure 14 1 andsee table 14 8 Weight see table 14 8 Transmitter diodes class in acc with EN 60825 1 1994 A1 2002 A...

Страница 53: ...restart delay time after beam interruption 100 ms a In the event of a failure if the 0V cable is interrupted each output behaves as a 120 k resistance to Uv A down stream safety PLC must not detect t...

Страница 54: ...nse time Table 14 9 Additional dimensions for calculating the effective protective field height Device type Transmitter and receiver Receiver Dimensions mm Weight kg Response time ms acc to resolution...

Страница 55: ...mounting bracket Figure 14 3 BT Z parallel bracket Figure 14 4 BT R swivel mount 39 16 29 12 R 1 0 R3 1 4 R6 R3 1 R10 30 12 R3 1 18 4 31 7 73 61 6 2 6 2 R3 1 R10 R10 22 10 R3 1 10 8 4 25 12 1 6 2 6 2...

Страница 56: ...onic MLC 520 EX 56 Figure 14 5 BT P40 clamp bracket for mounting in UDC device columns Figure 14 6 BT SSD and BT SSD 270 swiveling mounting brackets 65 80 40 20 14 26 5 11 3 a b 40 34 70 10 35 60 270...

Страница 57: ...20 Standard receiver EDM RES selectable 30 Extended receiver blanking muting z Device type T transmitter R receiver a Resolution 14 14 mm 20 20 mm 30 30 mm 40 40 mm 90 90 mm hhhh Protective field heig...

Страница 58: ...2 30 mm MLC500T30 hhhh EX2 600 68040206 68040306 750 68040207 68040307 900 68040209 68040309 1050 68040210 68040310 1200 68040212 68040312 1350 68040213 68040313 1500 68040215 68040315 Protective fiel...

Страница 59: ...GF Connection cable 8 pin 15 m long 429288 CB M12 25000 8GF Connection cable 8 pin 25 m long 429289 CB M12 50000 8GF Connection cable 8 pin 50 m long User configurable connectors for MLC 500 EX transm...

Страница 60: ...1300 S2 Continuous deflecting mirror column 1300 mm 549782 UMC 1600 S2 Continuous deflecting mirror column 1600 mm 549783 UMC 1900 S2 Continuous deflecting mirror column 1900 mm Deflecting mirrors 52...

Страница 61: ...42 EG Anhang IV MLC 100 MLC 300 MLC 500 Seriennummer siehe Typschild Safety Light Curtain Active opto electronic protective device safety component in acc with 2006 42 EC annex IV MLC 100 MLC 300 MLC...

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