Sick Lgt 015 Parts list manual

TECHNICAL DESCRIPTION

LGT 015 – LGT 090

Safety Light Grids

‡HIGH AVAILABILITY †

‡MINIMUM DIMENSIONS †

‡UNIVERSAL APPLICATION †

Contents

The generally recognised rules

of engineering are carefully ap-

plied when developing and

manufacturing SICK equipment.

Naturally, all products comply

with the ISO 9000 quality

standard.

Approvals

EU Europe

TÜV Rheinland

Am Grauen Stein

51105 Köln

1 General 3

1.1 Features 3

2 Applications and

operating conditions 4

2.1 Applications 4

2.2 Operating conditions 5

2.3 General Notes on Safety

Protective Measures 5

3 System structure 6

4 Functions 6

5 Installation and

commissioning 7

5.1 General 7

5.1.1 Safety distance from

hazardous point 7

5.1.2 Distance from reflective

surfaces 8

5.1.3 Multiple safeguarding 8

5.2 Mechanical mounting 9

5.3 Electrical installation 9

5.3.1 Connection between

control unit and

customer interface 9

5.3.2 Switching outputs 10

5.3.3 Operating modes 11

5.3.4 Machine control 11

5.3.5 Test input 12

5.3.6 Contactor monitor 12

5.3.7 Sender power setting 13

5.3.8 Blanking 13

5.3.9 Behaviour of the

switching outputs in

various operating modes 14

6 Indicators and diagnostic

elements 15

6.1 Indicators on the sender

and receiver strips 15

6.2 Indicators in control unit 15

6.3 Seven-segment display

in control unit 16

7 Test instructions 17

7.1 Pre-commissioning tests 17

7.2 Regular checking of the

safety device by qualified

personnel 17

7.3 Daily checking of the

safety device by authorised

and instructed personnel 17

8 Technical data 18

9 Dimensions 19

10 Connection diagram 21

11 LGT Safety Light Grid

Selection 22

11.1 LGT selection table 22

11.2 Control unit and

Connection lead

Selection Table 23

11.3 Accessories

Selection Table 23

12 Check list 24

13 Conformity 25

DIN EN ISO 9001

Reg.No. 19462-2

1 General

Fig. 1. Characteristic data of an LGT safety light grid

LGT Safety Light Screens are non

contact protective devices with a

resolution of 30 mm. They belong

to safety category 2 and as such are

testable protective devices. The

units are designed for operation in

industrial environments and are

characterised by the following fea-

tures:

‡High availability

‡Minimum dimensions

(10 x 30 mm2)

‡Stable construction

‡Universal application

‡Easy to install

The following characteristic data

are applicable in practice (Fig. 1).

Maximum width of protective field 6 m

Resolution (obstacle detection) 30 mm

Maximum height of protective field 905 mm

Minimum height of protective field 155 mm

1.1 Features

The main features of the LGT

safety light screen are:

‡Relay outputs

‡Up-to-date microprocessor

technology and specially de-

signed ICs (ASIC)

‡Easy to mount and adjust

‡Modular connection system

‡Only three components

(control unit, sender and

receiver strips)

‡Two sensor pairs can be con-

nected to one control unit

‡Double protective field height

by casading

‡Large signal reserve

‡EC approval

Height of protection field

Object

Resolution

Width of protection field

2 Applications and conditions of operation

Fig. 2. Point-of-operation guarding with an LGT Safety Light Grid

2.1 Applications

LGT Safety Light Grids are used for

point-of-point guarding (Fig. 2 and

3) and hazardous area guarding.

Typical applications include:

‡Form clamps as used in the

wood industry

‡Packaging machines

‡Processing centres

‡Production lines

‡Revolving transfer machines

‡Component insertion machines

‡Continuous lifts

‡Palletizers etc.

Fig. 3. Point-of-point guarding with an LGT Safety Light Grid Fig. 4. Point-of-point guarding with an LGT Safety Light Grid

2.2 Conditions of

Application

The machine or system must be

electrically controlled and it must

be possible to interrupt operation

at any time. When installing the

LGT, ensure that access above, be-

low or behind the protective zone

is not possible.

Operation and installation of pro-

tective devices are subject to the

relevant legal and official regula-

tions. These regulations vary ac-

cording to the application of the

light grid system.

2. Furthermore, our notes, in

particular the test regula-

tions (see chapter entitled Tests)

in this Technical Description or

these Operating Instructions

(such as use, assembly, installa-

tion or integration into the

machine control unit) must be

observed and followed.

3. The tests shall be carried out

by experts and/or persons

specifically authorized or

commissioned to perform

these tests. They shall be docu-

mented at all times in a clear and

concise comprehensible way.

4. Our Operating Instructions shall

be given to the employee

(operator) working at the

machine on which our protec-

tiveon equipment is used. The

employee shall be intro-

duced to his job and the

equipment by an expert.

5. This leaflet is enclosed as an

appendix and serves as a

checklist for checks carried out

by the manufacturer and fitter.

2.3 General Notes on

Safety Protective

Measures

1. The national/international

regulations apply for the use/

installation of non-contact

protectiveon equipment as well

as for commissioning and regular

recurring technical checks, in

particular

‡Machine directive 98/37 EC

‡Guidelines for working

substances 89/655 EEC

‡Machinery Safety regulations as

well as

‡Locally Enforced Regulations for

the prevention of accidents/rules

for safety.

It is the responsibility of the

manufacturers and users of the

machine on which our protec-

tiveon equipment is used, to

discuss all safety rules and

regulations which regulations,

which may apply with the

responsible authorities and to

observe these rules and

regulations.

3 System structure

The LGT Safety Light Grid com-

prises

‡Control unit LGTN

‡Sender LGTS and

‡Receiver LGTE

as well as the two connecting leads

to the control unit (

Fig. 5

4 Functions

3 System structure

Two sender and receiver units can

be connected to a LGTN control

unit.

If two sender units and two

receiver units are operated in paral-

lel the protective field height can be

doubled (

Fig. 6

Fig. 6. Two LGT safety light grid on a LGTN control unit: Double protective field height.

LGTN

2 x LGTS 2 x LGTE

max. 1800 mm

LGTN

LGTS LGTE

LGTN

Terminals for

sender and receiver

Fig. 5. LGT Safety Light Grid comprising a control unit LGTN, sender LGTS, receiver LGTE

and the two connecting leads to the control unit

The height of the protective field

depends on the size of the system

used.

The sender and receiver units of

the LGT contain a series of indi-

vidual elements which together

form a light grid of parallel beams.

If only one light beam is inter-

rupted, a switching command is

triggered which stops the machine.

5 Installation and Commissioning

Fig. 7. Determining the coasting time and the safety clearance

For S < 500 mm

S = 2000 .....T + 8 (d - 14)

greater (S = > 500 mm)

S = 1600 .....T + 8 (d - 14)

S Safety distance

T Total response time in s

(stopping time of the machine

+ response time LGT)

d Resolution

The LGT must be commissioned in

accordance with the following steps

1 Clarify and carry out mechanical

mounting

2 Connect the sender and re-

ceiver strips to the control unit

3 Set the DIP switches "With ...”

or "Without restart interlock"

(preset at factory), fig. 15

4 Connect the "machine control"

input (jumper or terminal)

5 Set the DIP switch: either 1 or

2 LGT connected to control

unit (fig. 15)

6 Connect or jumper the contac-

tor monitor

7 Perform blanking in accordance

with Section 5.3.8 if required

8 Set the sender power in ac-

cordance with 5.3.7

9 Insert the output elements in

the switch-off control line of the

machine

The individual measures for this

purpose are described in the fol-

lowing chapters.

5.1General

The LGT can be operated in any

position as long as the specified

safety distances and sufficient pro-

tective height are provided

(see 11 selection table).

Before the unit is installed, check

the components to ensure that

they are complete:

The LGT Light Grid comprises 5

individual parts. These must always

be available before starting the in-

stallation:

1 control unit LGTN

1 sender strip LGTS

1 receiver strip LGTE

2 connecting leads (preassembled)

Test rod (30 mm) as accessory

available.

Two sensor pairs (sender and re-

ceiver) can be connected to each

control unit.

5.1.1 Safety Distance from

Hazardous Point

The protective device requires a

certain minimum distance to the

hazardous point to ensure that the

point can only be reached once the

machine or system has come to a

standstill (Fig. 7). The safety dis-

tance (as per EN 775, 999 and

294) depends on the

‡stopping time of the machine,

‡response time of the protective

device,

‡resolution of the light grid

and the reach speed.

The stopping time is a measured

value of the machine. The reach

speed is equal to

at (short distances) up to 500 mm

safety distance 2 m/s

greater than this 1.6 m/s

The safety distance S is calculated

using the formula:

Mean protection field depth

S = Safety clearance Boundary of hazardous site

Protection field boundary

Upper edge of tool

Coasting time of machine

Lower edge of tool

This value must be strictly observed

in order to prevent access behind

the protection field.

≤ 75 mm

right

wrong

right

Light beam

interrupted

Central beam

LGTS LGTE

4º

Boundary of

hazardous site Reflective part

(e.g. container)

a (mm)

500

400

300

200

100

01 2 3 4 5 6

LGTS LGTE

8˚

a8˚

RW (m)

Fig. 8. Correct mounting and alignment. No reflection. The obstacle is clearly detected.

Fig. 9. Distance a as a function of the range RW

Fig. 10. Mounting two LGT systems in series

5.1.2 Distance to Reflective

Surfaces

Reflective surfaces located, placed

or mounted within the transmis-

sion and reception lobe can deflect

the light beams and may prevent an

object from being detected

(Fig. 8).

For this reason, a minimum dis-

tance abetween reflective objects

and the optical axis (straight-line

connection LGTS/E) must be ob-

served. The distance adepends on

the respective distance between

the sender and receiver and on the

alignment of the units (Fig. 9).

5.1.3 Multiple safeguarding

When using two LGT systems

(pairs), mutual interference must

be avoided between each safe-

guarded area. Since the light beams

diverge, the cross-section of the

beams increases proportionately to

the distance between the LGTS

and LGTE. The light beam must

only be received by the corre-

sponding LGTE. In order to pre-

vent mutual interference between

LGTs arranged in sequence, the

alignment must be taken into ac-

count when installing the units

(Fig. 10).

Direction of

approach

5.2 Mechanical mounting

The sender and receiver units must

not be installed rotated at 180°

angles to each other (Fig. 11).

The sender and receiver strips of

the light grid are secured in the light

screen by means of the threaded

M5 bolts or an M4 screw inserted

through the bolt hole or or the M5

bolt can be used directly (Fig. 12).

In order to ensure maximum flex-

ibility at the mounting location and

to enable light grids to be replaced

quickly, snap-on clips have been de-

veloped (Fig. 12). These can be di-

rectly screwed onto the mounting

surface. The light grids are then sim-

ply latched into place to prevent

the light grid from slipping as a re-

sult of vibration, the grid can

aditionally be secured to the clips

by means of a screw.

The control unit is screwed down

using the fixing holes provided in

the enclosure. When using the con-

trol unit without an enclosure, i.e.

mounting in a control cubicle, the

the control unit chassis is clipped di-

rectly onto a DIN rail.

To improve EMC, insulated moun-

ting on the power-driven machinery

is recommended. This can be provi-

ded by insulating (collared) washers,

for example.

Fig. 11. The sender and receiver units must

not be installed rotated at 180°angles to

each other.

5.3 Electrical installation

The preassembled connecting

leads must be used to connect

the control unit to the sender

and receiver strips. Insert the

connectors into the terminals

provided on the control unit.

(Fig. 13)

5.3.1 Connection between

the control unit and

customer interface

Depending on the type of control

unit, a supply voltage of 24 VDC

or 115/230 VAC must be pro-

vided and the unit connected in

accordance with the connection

diagram (Appendix 10).

Fig. 12. Fixing options for LGT

Fig. 13. Terminals for connecting sensor strips to the control unit

LGT

Clip

LGTN

R1 R2

S1 S2

S 1, R 1 Terminals for sender 1

and receiver 1

S 2, R 2 Terminals for sender 2

and receiver 2

S Sender

R Receiver

5.3.2 Switching outputs

The control unit has four switching

outputs, each of which performs

different functions.

‡Main relay contact output

(

Fig. 14

‡Auxiliary relay contact output

(

Fig. 14

‡Protective Zone status

(PNP),

‡Contamination output

(PNP)

The main relay with positively actu-

ated contacts is the "safety" switch-

ing output of the LGT. The posi-

tively actuated contacts are moni-

tored by the control unit to ensure

that they are functioning correctly.

The auxiliary relay with its switching

output operates as a second, inde-

pendent switch-off path should the

main relay or controller fail.

We recommend fitting arc suppres-

sors to the contactors at the

outputs. This will extend the lives of

the relays in the LGTN and

suppress interference from external

sources.

The output circuits must be

provided with adequate protection

(e.g. with fuses) in accordance with

draft standard EN 50 100.

Fig. 15 shows the funktion of the

switches for setting the operating

mode of the LGTN

The status of the main and auxiliary

relays depends on the status of the

protective zone, the operating

mode "With restart interlock" or

"Without restart interlock" and the

command and test inputs.

LGTN

On variants with external mode switches:

Observe the seven-segment display during swizches.

Furthermore, floating blanking – although possible (at least in Germany) – is

not permitted. May be subject to national standards and/or risk assessment.

Before carrying out blanking again always check the functioning of all

beams (without blanking). After setting the blanking check that only the

desired beams are in fact blanked out.

Fig. 14. Output circuit elements

Fig. 15. Operating mode settings on the control unit

SwitchSwitch

Switch PositionPosition

PositionPosition

Position FunctionFunction

FunctionFunction

Function

No.No.

No.

4 ON "Calibration" mode active

OFF "Calibration" mode inactive (ready)

3 ON Number of connected sensor pairs: 1

OFF Number of connected sensor pairs: 2

2 ON "Mask" mode active

OFF "Mask" mode inactive (ready)

1 ON Operating mode without restart interlock

OFF Operating mode with restart interlock

Switch

No.

ON OFF

Auxiliary relay contact

14 15

Main relay contact

5.3.3 Operating modes

The LGT Light Grid can be oper-

ated "with..." or "without restart in-

terlock". This means:

In the operating mode "without re-

start interlock", the contact inputs

for the machine control must be

bridged.

5.3.4 Machine control

The control switch is used to close

the main relay and test relay con-

tact again in operating mode "with

restart interlock" when the protec-

tive zone is clear again after an in-

terruption or after a test has been

successfully performed (Fig. 18).

The machine can then resume op-

eration.

A make contact must be connected

to the input terminal strip.

A semiconductor output provides

the exact status of the protective

zone (Fig. 16). This output has no

safety relevance.

Prot. zone free: output live

Protective zone

interrupted: no output

The light grid is monitored con-

tinuously for contamination. The

status is signalled by means of the

contamination semiconductor out-

put (Fig. 17).

Light grid not

contaminated: no output

Light grid

contaminated: output live

+24V

Fig. 16. The semiconductor output gives

the actual status of the protective zone

Fig. 17. Contamination semiconductor out-

put

910

+24V

With restart interlock After the protective zone has been

interrupted or a test performed, the

contact of the main and auxiliary re-

lays do not close until the machine

control has been actuated. This

means that the machine cannot

resume operation until the protective

zone is clear again and the machine

control has been actuated.

If the duration of the test signal is less

than 100 ms, it is not necessary to

actuate the machine control.

The machine control must also be

actuated after the supply voltage has

been applied in this operating mode.

Without restart interlock After the protective zone has been

interrupted or a test performed, the

contact of the main and auxiliary re-

lays close immediately after the pro-

tective zone has been cleared. It is

not necessary to actuate the machine

control. Operating modes are set via

the DIP switches on the control unit

board.

Fig. 18. The machine control is implemented

as a make contact

+24V

+4V

–

1,2 kΩ

Control switch

Operating mode Action Indicators

„Without restart inhibit“ Break the protective field again LGTN lights up green

Switch the voltage on and off LGTN lights up green

„With restart inhibit“ Press the control switch LGTN lights up green

5.3.5 Test input

The test input is used to initiate a

test cycle (Fig. 19). In doing so, the

LGT including the main relay and

response time are monitored to

ensure that they are functioning

correctly. If a safety-relevant error is

detected during the test, the

switching ouputs remain open. The

machine, therefore, cannot resume

operation. A break contact must be

connected to the test input.

5.3.6 Contactor monitor

The external contactor monitor

monitors the contacts of connected

contactors to ensure that they are

do not stick (weld). These must be

connected to the LGT as shown in

the connection diagram (Fig. 20).

The contactor monitor monitors

the static rest position of the exter-

nal contactors. If a dynamic contac-

tor monitor is specified, the moni-

tor must be integrated into the

higher-order controller.

+24V

1.2 k

Test contact

high

> 15V

low

< 5V

Contact closed:

Contact open:

no test

test

+24V

high

> 15V

low

< 5V

1.2 k

K1 K2

Contactor

Fig. 19. Test input circuit Fig. 20. Contactor monitor circuit

Note

Safety can only be guaranteed if the

test input is used (installed in the

machine controller).

Note

If the protective field is broken very

briefly, a lockout together with the

error message 14 may occur in the

case of heavily rebounding contacts

(Table, below). The "Action" col-

umn gives the required measures.

If the contact monitoring is pro-

vided by externally connected de-

vices, terminals 5 and 6 must be

bridged.

5.3.7 Sender power

setting

The LGT has a sender power set-

ting option to enable the sender

power to be optimally matched to

the ambient conditions and to

match the control unit to the light

grid types (more than one pair in

use). This ensures that the aperture

angle always remains below the re-

quired value of ±4°thus preventing

unnecessary load on components.

The sender power is set as follows:

1 Mount the LGT in its final posi-

tion

2 Select "Calibration" mode: set

DIP switches (Fig. 15) set to

control unit print.

3 Switch on the power supply

A digit, which depends on whether

one or two light grids are con-

nected to the control unit, then

appears on the seven-segment dis-

plays:

Left-hand display for screen1

Right-hand display for screen 2

4 Adjusting the LGT strips for

maximum value on the seven-

segment display, e.g. "8"; range-

dependent (e.g. range 6 m –

display ≥2).

5 Deactivate "Calibration" mode:

DIP switches.

Caution:

There must be no intrusion into the

protective field during the

shutdown operation.

The sender power setting is thus

stored.

Once the sender power has been

set, the LGT is set for optimum

operation at the required installa-

tion position.

Important:

The sender power must always be

reset before the unit is commis-

sioned and each time the sender

and receiver strips are replaced.

5.3.8 Blanking

If mechanical brackets for guiding

material are located in the protec-

tive zone, this area must be

blanked out. For this purpose, up

to 4 beams on the LGT can be

blanked out, i.e. they no longer

have an effect.

Attention:

Since gaps in the protective field

are produced as a result of blanking,

these gaps must be guarded by

other (e.g. mechanical) safety

devices.

The blanking is set as follows:

1 Mount the LGT in its final position

2 Switch off the power supply

3 Select "blanking" mode: DIP

switches (Fig. 15)

4 Switch on the power supply

A digit then appears on the two

seven-segment displays, depending

on whether one or two light

screens are connected to the con-

trol unit. The digit indicates the

number of beams which are

blanked. After approx. 20 seconds

the seven-segment display switches

to a flash mode with "17", and the

yellow LED in the control unit lights

up. This means that the blanking

setting is stored. It is not possible to

blank out more than

4 beams.

5 Deactivate "blanking" mode: DIP

switches.

The blanking setting is thus stored.

6 Switch off the power supply and

switch it on again or upplug the

reset jumper and re-insert it.

7 Make sender powering as

described under 5.3.7.

After the blanking setting has been

completed, the protective zone

must be checked with a test rod

(30 mm Ø).

The blanking setting also remains

stored in the event of a power

failure.

An existing blanking setting is dis-

played continuously as per Fig. 21,

bottom.

Strip pair 1

blanked

Strip pair 2

blanked

Both strip pairs

blanked

Fig. 21. Blanking shown in display

5.3.9 Behaviour of the

switching outputs

in the various

operating modes

The switching outputs behave as

follows in the various operating

modes (Fig. 22 to 24).

ca. 1s 30 ms

90 ms

Supply on

voltage off

Main relay closed

(make contact) open

Auxiliary relay closed

(make contact) open

Standard switch-on period with start-up test

Fig. 22. Behaviour of the switching outputs after application of the supply voltage in operat-

ing mode "without restart interlock"

30 ms

20 ms

30 ms

< 50 ms

25...110 ms

approx.

100 ms

Control switch active

passive

Test input passive

active

Main relay closed

open

Auxiliary relay closed

open

Wait for control switch

Fig. 23. Behaviour of the switching outputs after machine initiation switch followed by a

short test request in the operating mode "with restart interlock".

Fig. 24. Behaviour of the switching outputs after machine control initiation followed by long

(≥150 ms) test request in the operating mode "with restart interlock"

30 ms

20 ms

30 ms

< 50 ms

> 150 ms

Control switch active

passive

Test input passive

active

Main relay closed

open

Auxiliary relay closed

open

Wait for control switch Wait for control switch

6 Indicators and diagnostic elements

6.1 Indicators in the sender and receiver strips

6 Indicators and diagnostic elements

yellow Operating indicator, lights up continuously when the supply

voltage is applied.

yellow Operating inidicator, lights up continuously when the

supply voltage is applied.

green Lights up continuously when the light path is not obstructed;

flashes if reception inadequate (due to contamination or

alignment error).

red Lights up when protective zone interrupted.

Sender

Receiver

In operating mode

"without restart interlock"

In operating mode

"with restart interlock"

green Lights up continuously when light path unobstructed and

after enable by machine control;

flashes if reception is inadequate (due to contamination or

alignment error.

red Lights up when protective zone interrupted.

yellow Lights up when the machine control must be operated.

green Lights up continuously when light path unobstructed;

flashes if reception is inadequate (due to contamination or

alignment error).

red Lights up when protective zone interrupted.

6.2 Indicators in the control unit

6.3 Seven-segment dis-

play in control unit

The two-digit seven-segment dis-

play (Fig. 25) provides information

on the status, faults, alignment,

number of blanked beams etc.

Error messages are displayed in

blinking mode.

The following information is im-

portant for fault diagnosis puposes:

After the fault has been rectified, the

control unit must be switched off and

on again. When the error has been

rectified, the control unit must be

switched off and then on again or the

reset jumper must be disconnected

and then reconnected. If contrary fault

messages are displayed on the seven-

segment display, check the connection

system. If the fault still cannot be recti-

fied, submit the unit for repair or con-

tact the SICK representative.

Fault Corrective measure

Check DIP switches and control unit connection

Check DIP switch setting

Check DIP switch setting, check plug-in connections

of the strips

Reset the sender power

Check contactor monitor (see 5.3.6 Contactor monitor)

Blanking procedure completed, reset DIP switches

Release "Test" button

Release "Machine Control" button

Check the sender and receiver type assignment.

Check connection system.

Check connections

Check plug-in connections and type assignment of

the strips

Re-calibrate sender power, check supply voltage

Check the sender and receiver type assignment

Check plug-in connections and type assignment of

the strips

Re-calibrate sender power, check supply voltage

Restart interlock configuration incorrect

(jumper or control unit input)

DIP switch setting "restart interlock" has

changed during operation

DIP switch setting "No. of LGT" does not

coincide wilth the actual number con-

nected

Incorrect sender and receiver configuration

Contactor monitor not working

Blanking successfully completed

Wait until "Test" button is again released

Wait until "Machine Control" button is re-

leased

No. of beams on sender and receiver not

identical

Sender and receiver reversed

Status signal error from strip 1

Excessively high received signal for given

range or supply voltage too low

No. of beams on sender and receiver not

identical

Status signal error from strip 2

Excessively high received signal for given

range or supply voltage too low

No.

Fig. 25. Seven-segment display

7 Test instructions

7.1 Pre-commissioning

tests

‡The pre-commissioning test

serves to confirm compliance

with safety requirements

specified in the national/interna-

tional regulations, in particular

the Directives governing

machinery or equipment use

(EC Declaration of Conformity).

‡Test of the efficacy of the safety

device on the machine in all

machine operating modes.

‡The personnel operating the

machine protected by the safety

device must be instructed as to

its use by qualified personnel of

the machine operating company

supplier before beginning work.

The said instruction is the

responsibility of the machine

operating company supplier.

7.2 Regular checking of the

safety device by qualified

personnel

‡Checks based on the applicable

national regulations at the

intervals specified therein. These

checks serve to reveal

modifications or manipulation of

the safety device since

commissioning.

‡The checks must be carried out

every time major changes are

made to the machine or the

safety device, as well as after

resetting or repair work in the

event of damage to the housing,

the front screen, the connecting

cables, etc.

7.3 Daily checking of the

safety device by

authorised and

instructed personnel

Run the 30 mm test rod slowly

through the protective field at three

points:

1. Protective field limits/markings

close to the sender (access

opening)

2. Protective field limits/markings

close to the receiver

3. Protective field limits in the

middle between sender and

receiver.

In the process only the red LED on

the LGTE may light up.

8 Technical Data of LGT Safety Light Grid

8Technical Data of LGT Safety Light Grid

1) A power supply unit with safeguarded isolation

(SEL V, PEL V circuit) must be used.

2) The voltage must not exceed or fall below the

limit values.

Caution: In the event of high-energy overvoltages

between DC supply and PE potential (≥ 0.5 kV)

a switch to AC supply and/or insulated mounting

of the sensor strips is recommended. In case of

interference also lay the sensor cables isolated

from the interfering cable duct.

3) Cannot be shortened.

Main relay

V DC

500 100 150 200 250

1,0

0,1

VDC

10 100 300200

1,0

0,1

Auxiliary relay

min. typ. max.

General system data

Protective field height 150 mm 900 mm

Protective field width 0.1 m 6 m

Resolution 30 mm

Wave length of the sender 880 nm

Protection class 1

Enclosure rating

Light grid IP 65

Control unit IP 54

or IP 20 (for cabinet installation)

Operating mode with or without restart inhibit

Supply voltage UV1)

DC 19.2 V 24 V 28.8 V

ripple 2) 5 Vss

AC 92 V 115 V 126.5 V

184 V 230 V 253 V

frequency 48 Hz 62 Hz

Power consumption 13 W

16 VA

Output

Main relay

resistive 4 A, 45 V DC

(see diagram)

inductive 4 A, 25 V DC

(see diagram)

Auxiliary relay

resistive 8 A, 55 V DC

(see diagram)

inductive 8 A, 15 V DC

(see diagram)

Protective zone status surge-proof

100 mA

UV– 2,5 V (HIGH) UV

600 µA (IQ)

Dirt indicator surge-proof

100 mA

UV– 2.5 V (HIGH) UV

600 µA(IQ)

Response time 50 ms

Length of connecting leads see 11.2 selection table 3)

Operating modes 0.1 mm21.5 mm2

Operating data

Safety category type 2

Requirements pr EN 50100

Operating temperature range – 10 °C + 55 °C

Humidity range 15 % 95 %

Storage temperature range – 25 °C + 70 °C

Dimensions See 9 Dimensions

Housing colour Cadmium yellow, RAL 10-21

Vibrostability 5 g, 10 ... 55 Hz to IEC 68-2-6

Shock resistance 10 g, 16 ms acc. IEC 68-2-29

9 Dimensions

LGT No. of Enclosure Prot. zone

type beams length height mm

a) b)

015 5 185 155

030 11 335 305

045 17 485 455

060 23 635 605

075 29 785 755

090 35 935 905

32,5

259,5

409,5

559,5

709,5

859,5

ø 7,5

2,8

72,5

12,5

(159,5)

51,5

only LGT 015

x = mounting holes

1) Upper safety field limit is indicated by groove in housing

2) Lower safety field limit is 15 mm from end of housing

Fig. 26. Dimensions of sender LGTS, receiver LGTE

Fig. 27. Control unit dimensions LGTN

Fig. 28. Dimensional drawing of control unit for installation in a control cabinet

PG 11

Cable diameter 5 ... 12 mm

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 N L+

200

188

150

119

30 36 26,5

2324

SW 24

*) To receive cables Remove sleeve and prise apart

1 2 3 4 5 6 7 8 910 11 12 13 14 15 16 N L+

70 170

126

Push the side panels

outwards to remove

the cover.

**)

Suitable for installation in a control cabinet.

Suitable for mounting on a support rail to EN 50022 (high or low DIN rail) or EN 50035 (slide rail).

**) for mounting on low DIN rail (20 mm)

**) for mounting on high DIN rail (28 mm)

This manual suits for next models

Table of contents

Other SICK Relay manuals

SICK

SICK ReLy OSSD4 User manual

SICK

SICK LBV 330 User manual

SICK

SICK ReLy OSSD1 User manual

SICK

SICK ReLy HAND1 User manual

SICK

SICK ReLy EMSS3 User manual

SICK

SICK ReLy TIME1 User manual

SICK

SICK ReLy LOOP1 User manual

SICK

SICK ReLy OSSD4 User manual

SICK

SICK ReLy OSSD2 User manual

SICK

SICK ReLy OSSD3 User manual

SICK

SICK ReLy MULT1 User manual

SICK

SICK ReLy LOOP1 User manual

SICK

SICK ReLy HAND1 User manual

SICK

SICK ReLy EMSS1 User manual

SICK

SICK ReLy TIME1 User manual

SICK

SICK ReLy MULT1 User manual

SICK

SICK ReLy OSSD1 User manual

Popular Relay manuals by other brands

Tsubaki

Tsubaki TSBSS Series instruction manual

Sensata

Sensata Crydom PMP Series installation guide

Dossena

Dossena SRI3/H2 quick start guide

LOVATO ELECTRIC

LOVATO ELECTRIC PMVF 10 quick start guide

ASO

ASO ISK 71?24 operating manual

Enerwave

Enerwave ZWN-RSM1-PLUS installation instructions

Basler

Basler Class 300 manual

Lehigh

Lehigh E-Flex EFRP-04 Installation and user manual

Pepperl+Fuchs

Pepperl+Fuchs LB6101H instruction manual

ABB

ABB REF 610 Technical reference manual

GE CAL16A instructions

GE IBCG51E21 instructions

Sven

Sven OVP-11F user manual

ROOTECH

ROOTECH ACCURA 7500 user manual

Pilz

Pilz P2HZ 5 operating instructions

Relpol

Relpol RPC-2A-UNI User instruction

Woodward

Woodward MRG3 manual

Iseo

Iseo V364 installation guide

SICK LGT 015 Parts list manual

Popular Relay manuals by other brands