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Cascaded light grids ...LCT-K

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Table of Contents

FIESSLER

E L E K T R O N I K

Reaction times of cascaded light grids

Cascaded light grids detect an interruption of a downstream-connected sensor within 3 ms.
The reaction time on interruption of a light grid is equal to its intrinsic reaction time plus 3 ms per preceding light grid.

Main sensor:

Intrinsic reaction time (as indicated on the type plate)

Downstream sensor 1:

Intrinsic reaction time + 3 ms

Downstream sensor 2:

Intrinsic reaction time + 6 ms (2 x 3 ms)

The intrinsic reaction time is stated on the light grid's type plate.
The table on Page 11 lists intrinsic reaction times of all standard light grids.

Sample calculation

Reaction time:

Light grid's intrinsic

reaction time

(see tables on Page 11)

Calculated

reaction time

Main sensor:

ULCT

K

600/72

Downstream sensor 1: ULCT

K

800/96

10 ms

12 ms

10 ms

12 ms

+ 3 ms

=

15 ms

Downstream sensor 2: ULCT 200/8

5 ms

5 ms

+ 6 ms

=

11 ms

Sample calculation
Safety clearance:

Resolution

(see tables on Page 11)

Light grid's intrinsic

reaction time

(see tables on Page 11)

Calculated

reaction time

Safety clearance, e.g.

S = (K xT) + C

(t2 = 75 ms)

Main sensor:

ULCTK 600/72

Downstream sensor 1

ULCTK 800/96

14 mm

(C= 0 mm)

14 mm

(C=

0

mm)

10 ms

12 ms

10 ms

12 ms

+ 3 ms

=

15 ms

S = 170 mm

S = 180 mm

Downstream sensor 2

ULCT 200/8

30 mm

(C=

128 mm

)

5 ms

5 ms

+ 6 ms

=

11 ms

S = 172 mm + 128 mm

S = 300 mm

Table for determining the reaction times of cascaded light grids

Resolution is indicated

on the type plate

Light grid's intrinsic

reaction time

(see type plate)

Calculated reaction

time

Application-specific safety

clearance

(formulae are

provided in the Chapter 2.2)

Main sensor:

…LCTK ………/………

Downstream sensor 1

…LCTK ………/………

.......

+3 ms

= ……

S

= …………mm

S

= …………mm

Downstream sensor 2

…LCT ………/………

.......

+6 ms

= ……

S

= …………mm

Safety clearances for cascaded light grids

When calculating safety clearances (refer to Chapter 2.2), note that the reaction time on interruption of a cascaded light

grid increases by 3 ms per preceding light grid.

Fiessler Elektronik GmbH & Co. KG

Telefon: +49 (0) 711 / 91 96 97-0 Internet: http://www.fiessler.de
Telefax: +49 (0) 711 / 91 96 97-50 eMail: [email protected]

Doku Nr. 1121 Stand 08.01. 2018 RK/Aui

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Summary of Contents for BLCT

Page 1: ... n g m a n u a l t r a n s l a t i o n Safety category 4 EN 954 1 and IEC 61496 Part1 Part2 or EN 61496 Deployable to SIL 3 EN 61508 Performance Level PL e ISO 13849 1 BA ULCT_BLCT_GB Dok 1121 Stand 17 9 2019 RK Aui ULCT BLCT with blanking Telefon 49 0 711 91 96 97 0 Internet http www fiessler de Telefax 49 0 711 91 96 97 50 eMail info fiessler de Fiessler Elektronik GmbH Co KG Doku Nr 1121 Stand ...

Page 2: ...er de Internet www fiessler de Represented in all major countries Roboter MUTINGLAMPE Palette Three or more beam light grids with a range of up to 60 m Two beam light grids with transmitter receiver units and a deflecting mirror with a range of up to 10 m Output muting Differentiation between humans and material Two beam light grids with a range of up to 60 m Cross muting Differentiation between h...

Page 3: ...ection 21 3 1 Receiver s connecting plug 21 3 2 Connection with restart interlock with contactor control 21 3 3 Connection without restart interlock without contactor control 22 3 4 Connection with restart interlock without contactor control 22 3 5 Connection without restart interlock with contactor control 22 3 6 Transmitter s connecting plug 22 4 Safety notes 23 5 Auxiliary functions with safety...

Page 4: ...l safety switchgears permit muting and clocked operation refer to Chapter 5 Features Safety category 4 EN 954 1 and IEC 61496 Part1 Part2 or EN 61496 deployable to SIL 3 EN 61508 Performance Level PL e ISO 13849 1 Contactor control and restart interlock Integrated functions can be programmed without a PC Directly controllable contactors valves Switching capacity 0 5 A 24 V Beam spacing 8 33 mm 25 ...

Page 5: ...e start button once the protective field has been cleared again Protective field heights lengths ranges resolutions and beam count 1 System description 1 2 Design and function 1 3 Overview table Test bar diameter Size of obstruction Protective field height mm Length L mm Beam count Beam count 100 200 161 261 12 24 4 8 300 400 500 500 361 461 36 48 561 60 12 16 20 600 700 800 900 661 761 72 84 861 ...

Page 6: ...eiver indicate the current operating status Display on interruption of a light beam If one or more light beams are interrupted the number of the uppermost interrupted beam as seen from the connecting plug is displayed On light grids comprising more than 99 light beams the right hand decimal point also shines if the 122nd beam is interrupted for instance If a light beam numbered higher than 200 is ...

Page 7: ...de is called up If you hold down the button for 2 seconds or longer the currently displayed operating mode is saved and remains solidly lit on the display This procedure brief actuation of the button can be repeated as often as necessary After you have removed the bridge between OSSD2 and UB and reset the voltage the saved operating mode becomes effective Indication of operating mode The stored op...

Page 8: ... F4 Error during change of operating mode The start button was held down too briefly for changing the operating mode during power on Or the bridge from OSSD2 to 24 VDC was detached during a change of operating mode refer to the section on changing operating modes on Page 7 F5 Internal error Power on the device once again If F5 is still displayed an internal error has occurred In this case the devi...

Page 9: ...de reinforced with glass beads Plexiglass for light entry and exit Operating data Protection type Protection class IP 65 III Ambient operating temperature Storage temperature 10 to 50 C 25 to 70 C Electrical data Transmitter ULCT S Receiver ULCT E BLCT E Supply voltage2 Current consumption 24 V DC 20 15 SELF PELF Max 250 mA 24 V DC 20 SELF PELF Max 250 mA without load Outputs Inputs Electrical con...

Page 10: ... of the housing 25 5 mm 0 5 34 5 mm 0 3 Length Protective field height mm Length mm Mounting distance BFA mm 100 200 162 262 200 300 300 400 500 600 362 462 400 500 562 662 600 700 700 800 900 1000 762 862 800 900 962 1062 1000 1100 1100 1200 1300 1400 1162 1262 1200 1300 1362 1462 1400 1500 1500 1562 1600 16 5 mm FIESSLER E L E K T R O N I K Mounting distance BFA Fiessler Elektronik GmbH Co KG Te...

Page 11: ...00 108 120 ULCT 1100 132 ULCT 1200 144 ULCT 1300 156 ULCT 1400 168 1100 1200 132 144 1300 1400 156 168 11 12 13 14 15 17 18 19 ULCT 1500 180 1500 180 20 System Protective field height mm Beam count Reaction time ms BLCT 100 12 BLCT 200 24 100 200 12 24 7 9 BLCT 300 36 BLCT 400 48 BLCT 500 60 BLCT 600 72 300 400 36 48 500 600 60 72 10 12 14 15 BLCT 700 84 BLCT 800 96 BLCT 900 108 BLCT 1000 120 700 ...

Page 12: ...safety clearance Valid to a resolution of 40 mm Example 1 Safety light curtain ULCT100 12 Reaction time 5 ms Resolution d 14 mm Machine run on time t2 75 ms Example 2 Safety light curtain ULCT500 20 Reaction time 6 ms Resolution d 30 mm ULSG reaction time 6 ms Machine run on time t2 75 ms 12 2 Assembly 2 2 Safety clearance S K x T C At S 100 mm to 500 mm At S 500 mm S 2000 mm s T C S 1600 mm s T C...

Page 13: ...refer to Page 12 t1 Protective mechanism s reaction time t2 Machine s run on time If the protective field is at a height of 300 mm above the floor there is a danger of slipping beneath it This must be considered when assessing risks Accordingly at H 300 mm 1200 0 4 x H 850 mm The clearance a to the end of the protective field between the last beam and the hazard zone s front edge must not exceed E...

Page 14: ...ect e g container ULCT receiver ULCT transmitter Direction of approach Interrupted beam Central beam Container To prevent reflective objects from hindering a clear view and detection of obstruc tions ULCT BLCT safety light curtains must be mounted at a minimum clearance a Figure 14 1 from such reflective objects Table 14 2 Installation range clearance Fiessler Elektronik GmbH Co KG Telefon 49 0 71...

Page 15: ...hine must be 75 mm In the normal operating procedure Figure 15 2a the operator places workpieces in the seated position To allow for the machine s run on time the ULCT BLCT safety light curtain a is mounted at a distance before the hazard zone refer to Chapter 2 2 At the protection height selected here an exposed gap results above the light curtain Figure 15 2b shows how reaching over the light cu...

Page 16: ...curtains Table of Contents Empfänger Sender Empfänger Sender Empfänger Sender Empfänger Sender Empfänger Sender Empfänger Sender FIESSLER E L E K T R O N I K Receiver Transmitter Receiver Transmitter Receiver Transmitter Receiver Transmitter Receiver Transmitter Receiver Transmitter Fiessler Elektronik GmbH Co KG Telefon 49 0 711 91 96 97 0 Internet http www fiessler de Telefax 49 0 711 91 96 97 5...

Page 17: ...wivel fixture is to be attached by means of the accompanying plastic bolt The long swivel fixture is to be attached using the lock nuts of the ULCT BLCT light curtain s M12 connector Depending on the required type of mounting lateral or rear the fixture must be installed as explained further below Rear mounting Short swivel fixture with fixing screw attached via a plastic bolt Long swivel fixture ...

Page 18: ... After adjustment the fixing screw must be tightened to prevent accidental move Subsequently the fastening screws must be tightened Step 1 Step 2 Step 7 Supplied parts The crossed out parts are needed only if the swivel range proves insufficient 8 nuts M3 8 adjustment screws M3 x 8 Insert 2 each of the accom panying adjustment screws via the through bores into the M3 nuts pressed in at the rear Th...

Page 19: ...ope of delivery Refer to Page 10 of Chapter 1 8 dimensions for mounting clearances Step 8 Step 5 Fasten the long swivel fixture via the connector s M12 nuts The widening element can be fitted to permit swivelling of the TLCT in all directions beyond the edges 1st light beam is interrupted Also refer to Page 6 The long swivel fixture is meant for the side with the M12 connector The short swivel fix...

Page 20: ...justment screws on one shackle before adjusting the other shackle FIESSLER E L E K T R O N I K Adjustment screws Another means of mounting is to position a block available from Fiessler Elektronik in the slot on the rear of the ULCT A threaded bolt is then screwed into the block via a through bore Ensure plane parallel mounting of the transmitter and receiver Since fine adjustment is not possible ...

Page 21: ...r wall Barrier grille or wall Barrier grille or wall FIESSLER E L E K T R O N I K 3 Electrical connection 3 1 3 2 Connection of the transmitter and receiver Connector for the ULCTE BLCTE receiver Pin 1 white Start Enabling of start with restart interlock max 24V DC 20 Pin 2 brown UB 24V DC 20 SELV PELV Pin 3 green Pin 4 yellow EDM Contactor control max 24V DC 20 Pin 5 grey OSSD1 Safety output 1 ma...

Page 22: ...EDM 1 white Start 2 brown UB 4 yellow EDM 5 grey OSSD1 6 pink OSSD2 7 blue UB 24V DC 20 0V K1 K2 k1 k2 X X X X X X X To interrupt hazardous movement If a hazardous movement enters the sphere of contactors K1 and K2 the normally open contacts of K1 and K2 must be connected in series Enabling of start Observe the safety notes on Page 23 Connection without restart interlock with contactor control EDM...

Page 23: ...struction It must be possible for hazardous machine condition to be terminated by the sensor function Safe functionality of the entire system is ensured only under observance of this operating manual and relevant accident prevention regulations Forming part of the light curtain s scope of delivery this operating manual must be kept where the light curtain has been installed All instructions in thi...

Page 24: ...ng types can be saved and invoked again via a selector switch optional 2KP optional 3KP Connections for 2 6 light curtains Emergency stop circuit monitor Protective doors emergency stop switches Two handed start Start enabling via a two handed switch 2 stage output deactivation Deactivation of control drives e g robots LCD display 2 x 8 characters Status and error messages Override After irregular...

Page 25: ...he test rod through the protective field once directly before the transmitter once directly before the receiver and once halfway between the two see Figure 25 4 The green and yellow LEDs must remain off in this process This is done to detect any deflection by reflective components initialized inside the protective field g Indication of current resolution and protective field The current resolution...

Page 26: ...ective field occasionally or regularly interrupting no more than 1 beam in the process 7 Floating blanking with 2 beam reduced resolution Fig 26 3 8 1 beam reduced resolution Fig 26 4 9 2 beam reduced resolution Fig 26 5 10 Ignore 1 beam just once Fig 26 6 Combination of 5th and 9th blanking modes for an object which moves inside the protective field and thin movable objects e g hoses and cables w...

Page 27: ...EDs flash at about 1 Hz Green red LEDs flash at about 1 Hz 7 Floating blanking with 2 beam reduced resolution Fig 27 3 8 1 beam reduced resolution Fig 27 4 9 2 beam reduced resolution Fig 27 5 10 Ignore 1 beam just once Fig 27 6 Like item 5 but The blanked region must interrupt at least 4 neighbouring beams One or a maximum of two neighbouring beams at a time except for the synchronizing beam may ...

Page 28: ...objects to be blanked must be located inside the protective field 3 Move the key switch to the programming setting Wait until the green LED on the switching device indicates readiness for programming 4 Remove the key switch The connected BLCT light curtain indicates the set blanking function learns it as well as the blanking position and then indicates a clear protective field BPSG Switching devic...

Page 29: ...1 beam reduced resolution Fig 29 4 9 2 beam reduced resolution Fig 29 5 10 Ignore 1 beam just once Fig 29 6 11 Ignore 2 beams just once Fig 29 7 FIESSLER E L E K T R O N I K Selector switch operation Display Selector switch 1 Selector switch 2 Selector switch 3 Selector switch 4 Selector switch 5 Table of Contents Not flashing Blanking off Display during regular operation LEDs The red and yellow L...

Page 30: ... them Refer to Chapter 2 3 on installation conditions on Page 16 Reaction times safety clearances The reaction time on interruption of a cascaded light grid increases by 3 ms per series connected light grid This must be taken into account when calculating safety clearances Protective fields must always be assembled using components belonging together e g main sensor as receiver and main sensor as ...

Page 31: ...ety clearance Resolution see tables on Page 11 Light grid s intrinsic reaction time see tables on Page 11 Calculated reaction time Safety clearance e g S K xT C t2 75 ms Main sensor ULCTK 600 72 Downstream sensor 1 ULCTK 800 96 14 mm C 0 mm 14 mm C 0 mm 10 ms 12 ms 10 ms 12 ms 3 ms 15 ms S 170 mm S 180 mm Downstream sensor 2 ULCT 200 8 30 mm C 128 mm 5 ms 5 ms 6 ms 11 ms S 172 mm 128 mm S 300 mm T...

Page 32: ...e first and second downstream sensors is identical to that between the main sensor and first downstream sensor But note that one receiver is always connected to one transmitter and vice versa Table of Contents Fiessler www ELEKTRONIK fiessler de Fiessler www ELEKTRONIK fiessler de built in cable gland with connected 4 pol cable 0 3 m Length optional 4 pol interconnecting cable 2 m Length Refer to ...

Page 33: ...ng and optical alignment of cascaded light grids Machine control and voltage supply Transmitter Transmitter Receiver Receiver Transmitter Transmitter Yellow LED shines Yellow LED shines Yellow LED flashes about once a second Step 2 Align downstream sensor 2 Step 3 Align the main sensor last Green or yellow LED depending on the operating mode on the main sensor receiver shines when alignment is cor...

Page 34: ...n cascaded light grids Receiver Receiver Receiver Receiver Receiver Transmitter Transmitter Transmitter Transmitter Transmitter Transmitter Receiver Machine control and voltage supply Machine control and voltage supply Transmitter Transmitter Transmitter Receiver Fiessler Elektronik GmbH Co KG Telefon 49 0 711 91 96 97 0 Internet http www fiessler de Telefax 49 0 711 91 96 97 50 eMail info fiessle...

Page 35: ...Brief and secure bypass of ULCT safety light curtains during material conveyance e g entry into and exit out of a production cell or high rack warehouse Reliable distinctions are made here between movements by humans and material Run on distance Fig 35 2 The distance covered by hazardous movement following deactivation e g travel of a ram or a point on a roller s surface Run on time The time taken...

Page 36: ...hecks whether the connected switching elements relays contactors and valves are released Only then can the switching outputs be enabled again This prevents a failure of the switching elements relays contactors and valves used to control hazardous movement Restart interlock This function prevents automatic enabling of the switching outputs following interruption and subsequent clearing of the prote...

Page 37: ...2 cable connection receiver 5 m Length Other lengths on request 4 pol M12 extension cable for cascaded light grids 2 m Length 8 pol M12 extension cable for cascaded light grids 2 m Length 4 pol M12 Round plug connector Screw terminals 227g 5 m Length 100g 2 m Length XC M12 8pol 5m XC M12 4pol 2m K 148g 2 m Length 28g XC M12 8pol 2m K 4 pol M12 Round plug connector Screw terminals 55g Spare parts S...

Page 38: ...0 156 ULCT 1400 168 ULCT 1500 180 112 1300 1400 1361 1461 1500 1600 1561 1696 156 168 UC1300 156 UC1400 168 180 208 UC1500 180 17 USC1300 156 USC1400 168 UEC1300 156 UEC1400 168 USC1500 180 9 UEC1500 180 5 FIESSLER E L E K T R O N I K Type Order code Complete system BLCT 100 12 Protective field height mm 100 Length L mm 161 Beam count 12 Complete system BC100 12 Transmitter BSC100 12 Receiver BEC1...

Page 39: ...o KG refuses to accept any warranty claims if the device has been opened or if it has been modified Returning a unit If a unit proves defective and needs to be returned the following details will greatly help us in repairing the fault quickly Exact fault description Has the machine with the light curtain exhibited other faults Have you noticed other failures malfunctions etc in the past etc In whi...

Page 40: ...r normative documents EN 61496 1 IEC 61496 2 EN 61496 1 2 EN 62061 2005 EN ISO 13849 1 EN 954 following the provisions of Directive 2006 42 EG 2004 108 EG The protection goals of the Low Voltage Directive 2006 95 EC have been com plied with in accordance of Annex I No 1 5 1 of the Machinery Directive déclaration de conformité conforme appendice II 1 A 2006 42 EG Nous Fiessler Elektronik GmbH Co KG...

Page 41: ...1 FIESSLER E L E K T R O N I K Fiessler Elektronik GmbH Co KG Telefon 49 0 711 91 96 97 0 Internet http www fiessler de Telefax 49 0 711 91 96 97 50 eMail info fiessler de Doku Nr 1121 Stand 08 01 2018 RK Aui ...

Page 42: ...f Contents FIESSLER E L E K T R O N I K Fiessler Elektronik GmbH Co KG Telefon 49 0 711 91 96 97 0 Internet http www fiessler de Telefax 49 0 711 91 96 97 50 eMail info fiessler de Doku Nr 1121 Stand 08 01 2018 RK Aui ...

Page 43: ...f Contents FIESSLER E L E K T R O N I K Fiessler Elektronik GmbH Co KG Telefon 49 0 711 91 96 97 0 Internet http www fiessler de Telefax 49 0 711 91 96 97 50 eMail info fiessler de Doku Nr 1121 Stand 08 01 2018 RK Aui ...

Page 44: ...y equipment complies with national and European standards Development takes place in consultation with the relevant trade associations Certification is received followed rigorous tests by the Technical Inspection Board Fiessler Elektronik GmbH Co KG Buchenteich 14 D 73773 Aichwald Telefon 49 0 711 91 96 97 0 Fax 49 0 711 91 96 97 50 Email info fiessler de Internet www fiessler de Represented in al...

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