Datalogic SG2 Instruction Manual

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Page 1

SG2 EXTENDED

Instruction Manual

Page 2

ORIGINAL INSTRUCTIONS (ref. 2006/42/EC)

Datalogic Automation S.r.l. Via Lavino, 265 40050 - Monte S. Pietro Bologna - Italy

SG2 EXTENDED Instruction Manual Ed.: 10/2012

© 2012 Datalogic Automation S.r.l.  ALL RIGHTS RESERVED.  Protected to the fullest extent under U.S. and international laws. Copying, or altering of this document is prohibited without express written consent from Datalogic Automation S.r.l.

Datalogic and the Datalogic logo are registered trademarks of Datalogic S.p.A. in many countries, including the U.S.A. and the E.U.

All brand and product names mentioned herein are for identification purposes only and may be trademarks or registered trademarks of their respective owners.

Datalogic shall not be liable for technical or editorial errors or omissions contained herein, nor for incidental or consequential damages resulting from the use of this material.

10/10/2012

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INDEX

1. GENERAL INFORMATION........................................................................................................................1

1.1. General description of the safety light curtains................................................................................................ 1

1.1.1. Package contents..........................................................................................................................................................................2

1.2. New features compared to the SF2 Series...................................................................................................... 2

1.3. How to choose the device ............................................................................................................................... 3

1.3.1. Resolution.....................................................................................................................................................................................3

1.3.2. Controlled height .........................................................................................................................................................................4

1.3.3. Minimum installation distance.....................................................................................................................................................5

1.4. Typical applications ......................................................................................................................................... 8

1.5. Safety information.......................................................................................................................................... 10

2. INSTALLATION MODE............................................................................................................................11

2.1. Precautions to be observed for the choice and installation of the device ...................................................... 11

2.2. General information on device positioning..................................................................................................... 12

2.2.1. Minimum installation distance.................................................................................................................................................. 13

2.2.2. Minimum distance from reflecting surfaces ............................................................................................................................. 14

2.2.3. Emitter and receiver orientation............................................................................................................................................... 16

2.2.4. Installation of several adjacent safety light curtains ............................................................................................................... 17

2.2.5. Use of deviating mirrors........................................................................................................................................................... 19

2.2.6. Controls after first installation ................................................................................................................................................. 20

3. MECHANICAL MOUNTING .....................................................................................................................21

4. ELECTRICAL CONNECTIONS................................................................................................................24

4.1. Notes on connections .................................................................................................................................... 25

4.2. Earth connection............................................................................................................................................ 28

5. ALIGNMENT PROCEDURE.....................................................................................................................29

5.1. Correct alignment procedure ......................................................................................................................... 30

6. FUNCTIONING MODE .............................................................................................................................32

6.1. Reset mode ................................................................................................................................................... 32

6.2. Test function.................................................................................................................................................. 33

6.3. Reset function ............................................................................................................................................... 33

6.4. EDM function................................................................................................................................................. 34

6.5. Anti-interference function for range reduction................................................................................................ 35

6.6. Alignment aid function ................................................................................................................................... 36

7. DIAGNOSTIC FUNCTIONS .....................................................................................................................37

7.1. User interface ................................................................................................................................................ 37

7.2. Diagnostic messages .................................................................................................................................... 38

8. PERIODICAL CHECKS............................................................................................................................41

8.1. General information and useful data.............................................................................................................. 42

8.2. Warranty........................................................................................................................................................ 42

9. DEVICE MAINTENANCE.........................................................................................................................43

9.1. Product disposal ............................................................................................................................................ 43

10. TECHNICAL DATA ..................................................................................................................................44

11. LIST OF AVAILABLE MODELS ..............................................................................................................45

12. OVERALL DIMENSIONS .........................................................................................................................47

13. OUTFIT .....................................................................................................................................................48

14. ACCESSORIES........................................................................................................................................49

14.1. Angled fixing bracket ..................................................................................................................................... 49

14.2. Angled fixing bracket mounting ..................................................................................................................... 50

14.3. Deviating mirrors ........................................................................................................................................... 51

14.4 Columns and floor stands.............................................................................................................................. 52

14.5. Protective stands........................................................................................................................................... 53

14.6. Test piece...................................................................................................................................................... 53

14.7. Connection cables......................................................................................................................................... 54

14.8. Safety relay ................................................................................................................................................... 55

15. GLOSSARY..............................................................................................................................................56

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Instruction Manual SG2 EXTENDED

1. GENERAL INFORMATION

1.1. General description of the safety light curtains

The safety light curtains of the SG2 series 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. The light curtains of the SG2 series are Type 4 intrinsic safety systems used as accident-prevention protection devices and are manufactured in accordance with the international Standards in force for safety, in particular:

CEI IEC 61496-1: 2004 Safety of machinery: electrosensitive protective equipment. Part 1:

General prescriptions and tests.

CEI IEC 61496-2: 2006 Safety of machinery: electrosensitive protective equipment - Particular

requirements for equipment using active optoelectronic protective devices.

The device, consisting of one emitter and one receiver housed inside strong aluminium profiles, generates infrared beams that detect any opaque object positioned within the light curtain detection field. The emitter and the receiver are equipped with the command and control functions. The connections are made through a M12 connector located in the lower side of the profile.

The synchronisation between the emitter and the receiver takes place optically, i.e. no electrical

connection between the two units is required. The microprocessor guarantees the check and the management of the beams that are sent and received through the units: The microprocessor LEDs inform the operator about the general conditions

of the safety light curtain (see section 7 “Diagnostic functions”).

The device consists in 2 units that, according to the model, are composed by one or several emitting and receiving modules. The receiver checks the control operations and safety actions.

During installation, two yellow LEDs facilitate the alignment of both units (see chapter 5 “Alignment procedure”).

As soon as an object, a limb or the operator’s body accidentally interrupts one or some of the infrared beams sent by the emitter, the receiver immediately opens the OSSD outputs and blocks the MPCE machine (if correctly connected to the OSSD).

Some parts or sections of this manual containing important information for the operator are preceded by a note:

Notes and detailed descriptions about particular characteristics of the safety devices in order to better explain their functioning. Special instructions regarding the installation process.

The information provided in the paragraphs following this symbol is very important for safety and may prevent accidents. Always read this information accurately and carefully follow the advice to the letter.

This manual contains all the information necessary for the selection and operation of the safety devices.

However, specialised knowledge not included in this technical description is required for the planning and implementation of a safety light curtain on a power-driven machine. As the required knowledge may not be completely included in this manual, we suggest the customer to contact DATALOGIC AUTOMATION Technical Service for any necessary information relative to the functioning of the SG2

light curtains and the safety rules that regulate the correct installation (see chapter 8 “Periodical checks ”).

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SG2 EXTENDED Instruction Manual

1.1.1. Package contents

Package contains the following objects:

 Receiver (RX)  Emitter (TX)  SG2-E quick installation guide  SG2-E CD containing this manual and other documents  Checklist and periodical maintenance schedule  4 rotating brackets and specific fasteners  2 angled fixing brackets for models with heights included between 1200 and 1800 mm

1.2. New features compared to the SF2 Series

The SG2-E safety light curtains, compared to the SF2 series, present the following new features:

 Increased operating distance  Range enlargement with 150 to 1800 mm controlled heights  Reduced response times  New fastening system with rotating brackets  New mechanical profile compatible with SE accessories  Different positioning of synchronisation optics (the first one from the reference line)

Compared to SG2-B, SG2-E has the following features:

 EDM function  Anti-interference function through range selection on the Tx unit  Selectable manual/automatic restart function  Advance signalling for alignment and normal functioning

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1.3. 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:

1.3.1. Resolution

The resolution of the device is the minimum dimension that an opaque object must have in order to obscure at least one of the beams that constitute the sensitive area. The resolution strictly depends on the part of the body to be protected.

R = 30 mm hand protection

Type 2

R = 50 mm R = 90 mm

presence control

As shown in Fig.1, the resolution depends only on the geometrical characteristics of the lenses, diameter and distance between centres, and is independent from any environmental and operating conditions of the safety light curtain.

Fig. 1

The resolution value is obtained applying the following formula:

R = I + d

where:

I = Distance between two adjacent optics d = Lens diameter

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SG2 EXTENDED Instruction Manual

1.3.2. Controlled height

The controlled height is the height protected by the safety light curtain (Hp)

Fig. 2

The SG2-E controlled height is delimited by the yellow line pad-printed on the front glass and by the dimensions listed in the table:

Model

Controlled

height Hp (mm)

SG2-30-015-OO-E-C 150

SG2-xx-030-OO-E-C 300

SG2-xx-045-OO-E-C 450

SG2-xx-060-OO-E-C 600

SG2-xx-075-OO-E-C 750

SG2-xx-090-OO-E-C 900

SG2-xx-105-OO-E-C 1050

SG2-xx-120-OO-E-C 1200

SG2-xx-135-OO-E-C 1350

SG2-xx-150-OO-E-C 1500

SG2-xx-165-OO-E-C 1650

SG2-xx-180-OO-E-C 1800

xx = Resolution (30mm – 50mm – 90mm)

Reference

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Instruction Manual SG2 EXTENDED

1.3.3. Minimum installation distance

The safety device must be positioned at a specific safety distance (Fig. 3). This distance must ensure that the dangerous area cannot be reached before the dangerous motion of the machine has been stopped by the ESPE. The safety distance depends on 4 factors, according to the EN-999 Standard:

 Response time of the ESPE (the time between the effective beam interruption and the opening of

the OSSD contacts).

 Machine stopping time (the time between the effective opening of the contacts of the ESPE and the

real stop of the dangerous motion of the machine).

 ESPE resolution.  Approaching speed of the object to be detected.

Fig. 3

The following formula is used for the calculation of the safety distance:

S = K (t1 + t2) + C

where: S = Minimum safety distance in mm. K = Speed of the object, limb or body approaching the dangerous area in mm/sec. t1 = Response time of the ESPE in seconds (see chapter 10 “Technical data”) t2 = Machine stopping time in seconds d = Resolution of the system C = Additional distance based on the possibility to insert the body or one of body parts inside the dangerous area before the protective device trips.

C = 8 (d -14) for devices with resolution ≤ 40mm

C = 850 mm for devices with resolution

> 40mm

NOTE

: K value is: 2000 mm/s if the calculated value of S is ≤ 500 mm 1600 mm/s if the calculated value of S is > 500 mm

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SG2 EXTENDED Instruction Manual

When devices with > 40 mm resolution are used, the height of the top beam has to be ≥ 900 mm (H

)

from machine supporting base while the height of the bottom beam has to be ≤ 300 mm (H

). If the safety light curtain must be mounted in a horizontal position (Fig.4), the distance between the dangerous area and the most distant optical beam must be equal to the value calculated using the following formula:

S = 1600 mm/s (t

+ t2) + 1200 – 0.4 H

where:

S = Minimum safety distance in mm

= Response time of the ESPE in seconds (see chapter 10 “Technical data”)

= Machine stopping time in seconds

H = Beam height from the ground; it should be less than 1000 mm

Fig. 4

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Practical examples:

Let's suppose to have a light curtain with height = 600 mm

1) To calculate the distance of the device from the ESPE, in a vertical position

, the following formula is

used:

S = K*T + C

where:

T = t1 + t2 t

= ESPE response time + SE-SR2 relay release time (max 80 ms)

= Machine total stopping time d = Resolution of the device C = 8 * (d – 14) for devices with resolution <= 40 mm C = 850 for devices with resolution > 40 mm

In all cases, if K = 2000mm/sec then S will be > 500 mm. Distance will have then to be recalculated using K = 1600 mm/sec.

SG2-30-060 SG2-50-060 SG2-90-060

0.398 sec 0.393 sec 0.391 sec

128 mm 850 mm 850 mm

764.8 mm 1478.8 mm 1475.6 mm

2) To calculate the distance of the device from the ESPE, in a horizontal position

, the following formula

is used:

S = 1600 * T + 1200 – 0.4 * H

where:

H = Beam min. height from ground 15 * (d – 50) d = Resolution of the device

SG2-50-060 SG2-90-060

- 0.3 sec 0.391 sec

- 0 mm 600 mm

- 1828.8 mm 1585.6 mm

WARNING

: the reference standard is EN-999 “Machine safety - the positioning of the protective device based on the approaching speed of the human body”. This information is just an indication and a kind of summary. For safety distance correct calculation, it is compulsory to refer to the whole EN-999 standard.

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1.4. Typical applications

The safety light curtains of the SG2 series are used in all automation fields where the control and protection of the access to dangerous areas are necessary.

In particular, they are used to stop the moving of mechanical parts in:

- Automatic machines;

- Machines for packaging, material handling, storing;

- Weaving machines, wood working machines, ceramic working machines;

- Automatic and semiautomatic assembly lines;

- Automatic warehouses.

In food industry applications, DATALOGIC AUTOMATION Technical Service has to verify the compatibility of the material of the safety light curtain housing with any chemical agents used in the production process.

Example 1: Hand protection on moulding machine

In order to protect the light curtain against dust and humidity, the IP69K protective enclosure is used.

The aim is to prevent operator hands from being squashed during the final product stacking process. In addition, the solution must not interfere with the manufacturing process. Working premises are characterised by a humidity of 85% and a temperature of 25 °C. Moreover, washing with cold high-pressure waterjets is frequent, as well as the use of alkaline detergents or acids. Cold water rinsing jets (5 - 10 °C) are also used at a pressure of 40 bar.

Solution:

IP69K protection, made of a PMMA acrylic tube with v4a stainless steel caps, offers an effective solution without trapping dirt or contamination. The cap’s O’ring prevents water or dirt from entering the tube and at the same time, prevents also internal condensation. The cable connection is protected and fixed by a PG gland that prevents water or dirt from entering the tube.

Advantages

the IP69K protective enclosure (optional) ensures a reliable protection of the light curtains even in

extreme environmental conditions. Not only does the IP69K protective enclosure meet hygiene, washing resistance, availability and safety requirements, but also ergonomic and productivity requirements, as the protected area remains always accessible when the machine is stopped.

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Example 2: Cooling and air conditioning systems

Cooling and air conditioning systems, as well as automotive equipment and components, are checked inside a machine to detect possible leaks using a helium mass spectrometer. The point where these parts are positioned inside the measuring chamber, requires a Type 2 protection ensuring space reduction and safe access to the protected area.

Solution:

SG2 series safety light curtain represents is the ideal solution considering the requirements and application. The test machine is immediately stopped even when just one of the light curtain beams is interrupted.

Advantages

: the SG2 light curtain meets the customer needs when easy access is necessary in presence of machine stops. Easy installation, configuration and use are other advantages.

Example 3: Automatic warehouses

Operator protection in automatic warehouses. The SG2 Type 2 light curtain represents the ideal solution to protect the operator from hand squashing, abrasion and loss, or parts of it due to the moving parts.

Solution:

the SG2 safety light curtain series represents the ideal solution if the safety requirements and the application are considered. When even just one of the light curtain beams is interrupted, the carousel is immediately stopped.

Advantages:

he SG2 light curtain meets the customer's needs when easy access is necessary in presence of machine stops. Easy installation, configuration and use are other advantages.

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SG2 EXTENDED Instruction Manual

1.5. Safety information

For a correct and safe use of the safety light curtains of the SG2 series, 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 1.3.3, and during all working cycle phases.

 Mounting and connection of the safety light curtain must be carried out by qualified personnel only,

according to the indications included in the special sections (refer to sections 2; 3; 4; 5) and in the applicable standards.

 The safety light curtain must be securely placed in a particular position so that access to the

dangerous zone is not possible without the interruption of the beams (refer section 2 “Installation mode”).

 The personnel operating in the dangerous area must be well trained and must have adequate

knowledge of all the operating procedures of the safety light curtain.

 The TEST button must be located outside the protected area because the operator must check the

protected area during all Test operation.

 The RESET/RESTART button must be located outside the protected area because the operator

must check the protected area during all Reset/Restart operations.

Please carefully read the instructions for the correct functioning before powering the light curtain.

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2. INSTALLATION MODE

2.1. Precautions to be observed for the choice and installation of the device

Make sure that the protection level assured by the SG2 device (Type 2) is compatible with the real danger level of the machine to be controlled, according to EN 954-1 and EN13849.

 The outputs (OSSD) of the ESPE must be used as machine stopping devices and not as command

devices (the machine must have its own START command).

 The dimension of the smallest object to be detected must be larger than the resolution level of the

device.

 The ESPE must be installed in a room complying with the technical characteristics indicated in

chapter 10 “Technical data”.

 Do not place the device near intense and/or flashing light sources and, in particular, close to

receiving unit front surface.

 Strong electromagnetic disturbance might negatively affect device operation. Should this be the

case contact DATALOGIC AUTOMATION Technical Service.

 The operating distance of the device can be reduced in presence of smog, fog or airborne dust.

 A sudden change in environment temperature, with very low minimum peaks, can generate a small

condensation layer on the lenses and so jeopardise functioning.

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SG2 EXTENDED Instruction Manual

2.2. General information on device positioning

Pay special care when positioning the safety light curtain so to offer effective protection. The device should be installed in such a way that the dangerous area can only be entered after detecting the sensitive area.

Fig.5a shows some examples of possible access to the machine from the top and the bottom sides. These situations may be very dangerous and so the installation of the safety light curtain at sufficient height in order to completely cover the access to the dangerous area (Fig.5b) becomes necessary.

Fig.5a

Fig.5b

Under standard operating conditions, machine starting must not be possible while operators are inside the dangerous area.

YES

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Instruction Manual SG2 EXTENDED

When the installation of the safety light curtain very near to the dangerous area is not possible, a second light curtain must be mounted in a horizontal position in order to prevent any lateral access, as shown in Fig.6b.

If the operator is able to enter the dangerous area, an additional mechanical protection must be mounted to prevent the access.

Fig.6a

Fig.6b

2.2.1. Minimum installation distance

Refer to par.1.3.3. “Minimum installation distance”

YES

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SG2 EXTENDED Instruction Manual

2.2.2. 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 compromise the recognition of an object inside the controlled area. However, 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.

Fig. 7

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Instruction Manual SG2 EXTENDED

It is thus important to perfectly align the safety light curtain according to the minimum distance from reflecting surfaces.

The minimum distance depends on:

 Working distance between emitter (TX) and receiver (RX) = operating distance  Real opening angle of ESPE (EAA); especially:

for ESPE type 2 EAA = 10° ( = 5°)

Diagram of Fig. 8 shows the min. distance from the reflecting surface (Dsr), based on the operating distance:

Fig. 8

The formula to get Dsr is the following:

Dsr (m) = 0.27 for op. distances < 3 m D

sr (m) = 0,5 operating distance (m) x tg 2 for oper. distances  3 m

ESPE

Type 2

perating distance

stance

rom re

ect

ng sur

ace

)

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SG2 EXTENDED Instruction Manual

2.2.3. Emitter and receiver orientation

The two units shall be installed parallel to each other, with the beams orthogonal respect to the emitting and receiving directions, with the connectors positioned in the same manner.

The configurations shown in Fig. 9 must be avoided:

Fig.9

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2.2.4. Installation of several adjacent safety light curtains

When several safety devices must be installed in adjacent areas, interferences between the emitter of one device and the receiver of the other must be avoided. The safety light curtain SG2-E is equipped with a selectable range to reduce interferences between adjacent curtains by selecting short range. See par. 6.5 for the selection and operation.

Fig.10 provides an example of possible interferences between different devices and possible solutions.

long range selection (19 m)

short range selection (9 m)

Fig.10

YES

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SG2 EXTENDED Instruction Manual

The following solutions show alternative installation examples to be possibly used depending on application needs.

Fig.11

YES

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Instruction Manual SG2 EXTENDED

2.2.5. Use of deviating mirrors

The control of any dangerous area, with several but adjacent access sides, is possible using only one safety device and well-positioned deviating mirrors. Fig.12 shows a possible solution to control three different access sides, using two mirrors placed at 45° with respect to the beams.

Fig. 12

The operator must respect the following precautions when using the deviating mirrors:

 It is very hard to align the receiver and the transmitter when using deviating mirrors: a tiny angular

shift of the mirror is enough to have a misalignment. For this reason the use of DATALOGIC AUTOMATION laser pointer is recommended.

 The minimum safety distance (S) must be respected for each single section of the beams.  The effective operating range decreases by about 15% by using only one deviating mirror, the

percentage further decreases by using 2 or more mirrors (for more details refer to the technical specifications of the mirrors used).

The following table shows the operating distances relating to the number of mirrors used.

number of mirrors operating distance 1 16.5 m 2 13.7 m 3 11.6 m

 Do not use more than three mirrors for each device.  The presence of dust or dirt on the reflecting surface of the mirror causes a drastic reduction in the

range.

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SG2 EXTENDED Instruction Manual

2.2.6. 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.

Verify that:

 ESPE remains blocked (

) intercepting the beams along the protected area using the specific

test piece, following the Fig.13 scheme.

TP30 for light curtains with 30 mm resolution: SG2-30-XX-X TP50 for light curtains with 30 mm resolution: SG2-50-XX-X TP90 for light curtains with 30 mm resolution: SG2-90-XX-X

Fig. 13

 ESPE has to be correctly aligned, press slightly on the product side in both directions the red LED

must not turn on

 The activation of the TEST function causes the opening of the OSSD outputs (red LED

and controlled machine stop).

 The response time at machine STOP, including the ESPE and machine response times, must be

included in the limits defined in the calculation of the safety distance (refer to section 2 “Installation modes”).

 The safety distance between the dangerous parts and ESPE must comply with the requirements

indicated in section 2 “Installation modes”.

 A person must not access or remain between ESPE and the dangerous parts of the machine.  Access to the dangerous areas of the machine must not be possible from any unprotected area.  ESPE must not be disturbed by external light sources, ensuring that it remains in Normal operating

function for at least 10-15 minutes and placing the specific test piece in the protected area in the SAFE condition for the same period.

 Verify the correspondence of all the accessory functions, activating them in the different operating

conditions.

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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 chapter 10 “Technical data”).

The two units shall be positioned so as to be aligned and parallel as much as possible. The next step is the fine alignment, as shown in chapter 5 “Alignment Procedure”.

Two types of brackets can be used to fix the two units:

Rotating brackets

Rotating fixing brackets are supplied with all SG2-E models (Fig.14). They can be used separately from or together with the angled fixing brackets.

For fixing with rotating brackets, refer to Fig.14.

Fig. 14

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SG2 EXTENDED Instruction Manual

Angled fixing brackets

Angled fixing brackets (Fig.15), available upon request, can be used as an alternative or together with rotating brackets. The rotating supports for the correction of the unit inclination are available on request (see chapter 14 “Accessories”).

Fig. 15

Anti-vibration shock absorbers together with fixing brackets are recommended in applications with particularly strong vibrations to reduce the impact of the vibrations.

Fig.16

Fig.16 and table below show the recommended mounting positions according to the safety light curtain length.

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MODELS L (mm) A (mm) B (mm) C (mm)

SG2-30-015-OO-E-C

216.3 108 54 -

SG2-kk-030-OO-E-C

366.2 216 75 -

SG2-kk-045-OO-E-C

516.3 316 100 -

SG2-kk-060-OO-E-C

666.2 366 150 -

SG2-kk-075-OO-E-C

816.3 466 175 -

SG2-kk-090-OO-E-C

966.2 566 200 -

SG2-kk-105-OO-E-C

1116.2 666 225 -

SG2-kk-120-OO-E-C

1266.3 966 150 483

SG2-kk-135-OO-E-C

1416.2 1066 175 533

SG2-kk-150-OO-E-C

1566.3 1166 200 583

SG2-kk-165-OO-E-C

1716.3 1266 225 633

SG2-kk-180-OO-E-C

1866.3 1366 250 683

kk = Resolution (30mm – 50 mm – 90 mm)

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SG2 EXTENDED Instruction Manual

4. ELECTRICAL CONNECTIONS

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):

EDM SELECTION

+24 VDC

0 V

OSSD1

OSSD2

RESET/RESTART

MAN/ AUT O

+24 VD

N.O.

EDM

+24 VDC

N. C. ex tern al con tac t

1 = white = RESET / RESTART(*) 2 = brown = +24 VDC 3 = green = EDM SELECTION 4 = yellow = EDM 5 = grey = OSSD 1 6 = pink = OSSD 2 7 = blue = 0 V 8 = red = MANUAL/AUTOMATIC RESTART

(*) automatic RESTART  RESET function manual RESTART  RESTART/RESET function

EMITTER (TX):

3 4

TEST

0 V

+24 VD C

RANGE SELECTION

+24 VDC

N.O.

1 = brown = +24 VDC 2 = white = TEST 3 = blue = 0 V 4 = black = RANGE SELECTION

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Purpose Connection 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 )

EDM

Normally closed Force-guided relay contact

+ 24 Vdc EDM OFF

ENABLE EDM

Not connected or 0V

EDM ON

OSSD1

AUTO RESTART

MAN/AUTO RESTART SELECTION

OSSD2

MAN RESTART

4.1. Notes on connections

For the correct functioning of the SG2 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. motor power supplies, inverters, etc.);

 Do not connect in the same multi-pole cable the OSSD wires of different light curtains;

 The TEST wire must be connected through a N.O. button to the supply voltage of the ESPE.

 The RESET/RESTART wire must be connected through a N.O. button to the supply voltage of the

ESPE.

The RESET/RESTART button must be located in such a way that the operator can check the protected area during any test (see chapter 6 “Functioning mode”).

 The device is protected internally against overvoltage and overcurrent: the use of other outer parts

is not recommended.

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SG2 EXTENDED Instruction Manual

Example: connection to the safety relay.

Fig. 17

The figures show the connection between the safety light curtains and the safety relay of the SE-SR2 series functioning in the Automatic Start mode (left side) and Manual Start with monitoring (right side).

 Do not use varistors, RC circuits or LEDs in parallel at relay inputs or in series at OSSD outputs.

 The OSSD1 and OSSD2 safety contacts cannot be connected in series or in parallel, but can be

used separately (Fig.18). If one of these configurations is erroneously used, the device enters into the output failure condition (see chapter 7 “Diagnostic functions”).

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Instruction Manual SG2 EXTENDED

 Connect both OSSDs to the activating device. Failure to connect an OSSD to the activating device

jeopardises the system safety degree that the light curtain has to control.

Fig. 18 Fig. 19

Fig. 20 Fig. 21

YES

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SG2 EXTENDED Instruction Manual

4.2. Earth connection

SG2 safety light curtain units are preset for easy ground connection. A special compartment, positioned onto caps and marked with the special symbol shown in Figure 22, allows connection with ground cable by means of an additional screw coming with the equipment.

Fig. 22

Ground connection configuration is the most common and guarantees the best immunity against electromagnetic disturbances. SG2-B can function even without ground connection. This condition has to be carefully evaluated according to the EMC disturbance immunity and necessary insulation class considering the plant or entire system where the light curtain is installed.

 The ground connection of the two units is not necessary for Class III, while the use of a duly-

insulated low-voltage feeder type SELV or PELV is compulsory. In this case, we recommend covering the earth symbol present on the caps of the two units with a blank sticker.

 The ground connection of the two units is compulsory for Class I, while the use of a duly-insulated

feeder type SELV or PELV is not compulsory but anyway recommended.

The following table is a summary of SG2-E electrical protections.

Electrical protections Class I Class III

Ground Connection Compulsory Not necessary Ground connection symbol Compulsory Not necessary Power supply by generators

SELV / PELV

Recommended Compulsory

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Instruction Manual SG2 EXTENDED

5. ALIGNMENT PROCEDURE

The alignment between the emitting and the receiving units is necessary to obtain the correct functioning 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. The beam used to synchronise the two units is the first after the connector. SYNC is the optics connected with this beam and LAST is the optics connected to the last beam after the SYNC unit..

Fig. 23

Signals are clearly identified through symbols allowing immediate reading, independent of bars directions. A short description of the signalling LEDs is necessary to avoid misunderstandings.

Ricevitore

Emettitore

Fig. 24

last optics (LAST

)

first optics = synchronisation optics (SYNC

)

LAST

SYNC

NORMAL

OP.

NORMAL

OP.

SAFE(BREAK)

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SG2 EXTENDED Instruction Manual

The standard installation described hereinafter is the one shown in Fig. 24, i.e. with the bar assembled

with the connectors pointing down.

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. Check alignment results with given table.

NOTE: To enter alignment mode select the function as described in chapter 6.6.

Display

LED

NORMAL

OP.

LED

SAFE

(BREAK)

LED

yellow

SYNC

LED

yellow

LAST

Condition

Alignment

status

Sync NOK Last NOK

OFF

Sync OK

Last NOK

OFF ON

OFF OFF

Sync OK

Last OK

Middle optics NOK

align.

ON OFF OFF OFF

Each beam is over the min.

operating threshold and the number

of beam over the threshold is

included between

0 and 25%

MINIMUM align.

ON OFF OFF OFF

Each beam is over the min.

operating threshold and the number

of beam over the threshold is

included between

25 and 50%

ON OFF OFF OFF

Each beam is over the min.

operating threshold and the number

of beam over the threshold is

included between

50 and 75%

ON OFF OFF OFF

Each beam is over the min.

operating threshold and the number

of beam over the threshold is

included between

75 and 100%

MAXIMUM

align.

A Keep the receiver in a steady position and set the emitter until the yellow LED (

SYNC) is

OFF. This condition shows the effective alignment of the first beam (synchronisation beam).

B Rotate the emitter, pivoting on the lower optics axis, until the yellow LED (

LAST) is OFF.

NOTE:Ensure that the green LED (

NORMAL OP.) is steady ON.

C Delimit the area in which the green LED (

) is steady through some micro adjustments - for the first and then for the second unit - so to have the maximum alignment (4) and then place both units in the centre of this area.

D Fix the two units firmly using brackets.

 Verify that the green LED (

) on the RX unit is ON and beams are not interrupted, then

verify that the red LED SAFE (BREAK)

turns ON if even one single beam is interrupted

(condition where an object has been detected ).

 This verification shall be made with the special cylindrical “Test Piece” having a size suitable to

the resolution of the device used (refer paragraph 2.2.6 ”Controls after first installation”).

E Switch OFF and ON the device in standard operating mode.

The alignment level is monitored also during device normal operation mode via display (see chapter 7.2).

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Instruction Manual SG2 EXTENDED

Once the curtain has been aligned and correctly fastened, the display signal is useful both to check the alignment and show a change in the environmental conditions (occurrence of dust, light disturbance and so on) via signal level monitoring.

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SG2 EXTENDED Instruction Manual

6. FUNCTIONING MODE

6.1. Reset mode

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

ESPE standard operation can be reset (OSSD safety contact closing = NORMAL OP.condition

)

in two different ways:

 Automatic restart -

After its activation ESPE resets to standard operating condition once the object

has been removed from the controlled area.

 Manual restart -

After its activation ESPE resets to standard operating condition only once the reset function has been enabled and provided that the object has been removed from the controlled area. This condition, called interlock, is signalled on the display (see chapter 7.2).

WARNING!

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. In this case, the manual reset or, for example, the manual reset

of the SE-SR2 relay (chapter 4.1 “Notes on connections”) might be necessary.

Time chart (Manual Restart)

The automatic or manual restart can be selected by connecting the receiver (see chapter 4 "Electrical connections")

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Instruction Manual SG2 EXTENDED

6.2. Test function

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.

6.3. Reset function

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

chapter 7 “Diagnostic Functions”),.

The RESET function can be activated by keeping a normally open external contact (RESET/RESTART push-button), open for at least 5 seconds. The RESET signal is active high.

Safety light curtain status

Faulty block

Standard

24 VDC

0 V

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SG2 EXTENDED Instruction Manual

6.4. EDM function

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).

- Connect EDM input (pin 4 of M12 8-pole – RX) to a 24 VDC normally closed

contacts of the device to be monitored.

NOTE: The decimal dot on the display shows that the function is enabled.

EDM deactivated

- Connect to 24 VDC pin 3 of receiver M12 8-pole connector (EDM enabling = OFF).

- Disconnect or connect to the ground EDM input (pin 4 of M12 8-pole - RX). This function checks normally closed contact switch on OSSD status change.

 350 msec: 350 msec: time after OSSD OFF-ON switch when EDM test is performed.

 100 msec: time after OSSD ON-OFF switch when EDM test is performed.

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Instruction Manual SG2 EXTENDED

6.5. Anti-interference function for range reduction

The safety light curtain SG2-E can reduce interferences between adjacent curtains by selecting short range.

Range is selected by connecting pin 4 of the transmitter M12 4-pole connector of the emitter (as specified in chapter.4). Connect pin 4 to +24V for short range - up to 9 m- or 0V for long range - up to 19 m (i.e. standard setting).

Range setting is accepted on device switching on, no range changes are allowed during standard operating conditions.

Range setting is displayed on the transmitter during the initialisation stage: "L" stands for long range, whereas "S" stands for short range.

WARNING! Check for interference from adjacent devices before starting standard operating mode. Position the interfering device beyond short range limit.

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SG2 EXTENDED Instruction Manual

6.6. Alignment aid function

SG2-E 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 Figure 24).

OFF

RESET

STATO DELLA BARRIERA

0Vdc

24Vdc

0.5 s

OFF

STATO DELLA BARRIERA ( ALLINEAMENTO )

Fig. 25

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.

The alignment level is monitored also during device standard operating mode via display (see par 7.2). Once the curtain has been aligned and correctly fastened, the display signal is useful both to check the alignment and show any changes in the environmental conditions (occurrence of dust, light disturbance and so on).

NOTE: OSSDs are not active on the alignment mode.

LIGHT CURTAIN STATUS

LIGHT CURTAIN STATUS ( ALIGNMENT

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Instruction Manual SG2 EXTENDED

7. DIAGNOSTIC FUNCTIONS

7.1. User interface

Curtain operating status is displayed onto a 1-digit display both on receiver and transmitter. SG2-E also has four LEDs on the receiver and two LEDs on the emitter. Fig.26 shows all LEDs signalling modes ON, OFF and blinking.

Fig. 26

LED OFF

LED BLINKING

LED ON

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SG2 EXTENDED Instruction Manual

7.2. Diagnostic messages

The operator is able to check the main causes of the system stop and failure, using the same LEDs used for visualising the functions.

For Receiver:

Function Status Meaning LED DIGIT

Alignment See chapter.5

TEST (red ON)

Light curtain being tested, the OSSD status must

be OFF

Emission (OSSD ON) (green ON)

Light curtain working and in normal operation conditions

Interruption (OSSD OFF) (red ON)

Light curtain working and in safety block conditions.

Interlock Beams free (red ON yellow ON)

Interlock curtain waiting for restart. OSSD status

must be OFF

Interlock Beams

interrupted (red ON yellow ON)

Light curtain interlocked, OSSD status must be

OFF

Signal level

Minimum (1 bar) Medium (2 bar) Maximum (3 bar)

Normal operation

EDM enabled EDM function is selected

Function Type Check and repair LED DIGIT

OSSD error (red ON)

Check OSSD connections. Make sure that they are not in contact with one another or with the supply cables, then Reset. If the failure continues contact DATALOGIC AUTOMATION

Internal error (red ON)

Switch OFF and switch ON the power supply circuit. If the failure continues contact DATALOGIC AUTOMATION

Optical error (red ON)

Reset. If the failure continues contact DATALOGIC AUTOMATION

EDM error (red ON)

Check EDM connections and lines. If the failure continues contact DATALOGIC AUTOMATION

Error status

Restart selection error

(red ON)

Check the man/auto restart connection. If the failure continues contact DATALOGIC AUTOMATION

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Instruction Manual SG2 EXTENDED

No power supply (LEDs OFF)

Check connections and input voltage value. If the failure continues contact DATALOGIC AUTOMATION

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SG2 EXTENDED Instruction Manual

For Emitter:

Function Status Meaning LED DIGIT

TEST (green ON)

Light curtain being tested, the OSSD status on the

receiver shall be OFF

Emission (rated range) (green ON yellow

ON)

Light curtain working in normal operating conditions

Normal operation

Emission (reduced range)

(green ON yellow ON)

Light curtain working in normal operating conditions

Function Type Check and repair LED DIGIT

Internal error

(green ON)

Switch OFF and switch ON the power supply circuit. If the failure continues contact DATALOGIC AUTOMATION

Optical error

(green ON)

Switch OFF and switch ON the power supply circuit. If the failure continues contact DATALOGIC AUTOMATION

Error status

No power supply

(LEDs OFF)

Check connections and input correct value. If the failure continues contact DATALOGIC AUTOMATION

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Instruction Manual SG2 EXTENDED

8. PERIODICAL CHECKS

The following is a list of recommended check and maintenance operations that should be periodically carried out by qualified personnel.

Check that:

 The ESPE stays locked (

) during beam interruption along the entire protected area, using the

suitable “Test Piece”. (*)

 The ESPE is correctly aligned. Gently press onto product side in both directions. The red LED

should remain OFF

 Enabling the TEST function, the OSSD outputs should open (the red LED

is ON and the

controlled machine stops).

 The response time upon machine STOP (including response time of the ESPE and of the machine)

is within the limits defined for the calculation of the safety distance (see chapter 2 “Installation mode”).

 The safety distance between the dangerous areas and the ESPE are in accordance with the

instructions included in chapter 2 “Installation mode”.

 Access of a person between ESPE and machine dangerous parts is not possible nor is it possible

for him/her to stay there.

 Access to the dangerous area of the machine from any unprotected area is not possible.  The ESPE and the external electrical connections are not damaged.

The frequency of checks depends on the particular application and on the operating conditions of the safety light curtain.

(*) according to the Fig.13 scheme

Verify that:

 ESPE remains blocked (

) intercepting the beams along the protected area using the specific

test piece, following the Fig.12 scheme.

TP30 for light curtains with 30 mm resolution: SG2-30-XX-X TP50 for light curtains with 50 mm resolution: SG2-50-XX-X TP90 for light curtains with 90 mm resolution: SG2-90-XX-X

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SG2 EXTENDED Instruction Manual

8.1. General information and useful data

Safety MUST be a part of our conscience. 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 AUTOMATION Customer Service is at your disposal to carry out the installation.

The device uses fuses that are not self-resetting. Consequently, in presence of short-circuits causing the cut-off of these fuses, both units shall be sent to DATALOGIC AUTOMATION service department.

A power failure caused by interferences may cause the temporary opening of the outputs, but the safe functioning of the light curtain will not be compromised.

8.2. Warranty

DATALOGIC AUTOMATION guarantees each brand new SG2 system, under standard use conditions, against manufacturing defects in material and workmanship for a period of 36 (thirty-six) months from the date of manufacturing. DATALOGIC AUTOMATION will not be liable for any damages to persons and things caused by failure to stick to the correct installation modes and device use. Warranty validity is subject to the following conditions:

 User shall notify DATALOGIC AUTOMATION the failure within thirty-six months from product

manufacturing date.

 Failure or malfunction shall not have been originated directly or indirectly by:

- use for unsuitable purposes;

- failure to comply with the intended use prescriptions;

- negligence, unskillfulness, wrong maintenance;

- repairing, changes, adaptations not made by DATALOGIC AUTOMATION personnel, tampering with the device, etc.;

- accidents or crashes (even due to transportation or by force majeure causes);

- other causes not depending from DATALOGIC AUTOMATION.

If the device does not work, send both units (receiver and emitter) to DATALOGIC AUTOMATION The Customer is responsible for all transport charges and damage risks or material loss during transport, unless otherwise agreed. All replaced products and parts become a property of DATALOGIC AUTOMATION. DATALOGIC AUTOMATION does not accept any warranty or right other than the above-described ones. No requests for compensation for expenses, activities stop or other factors or circumstances somehow connected to the failure of the product or one of its parts to operate cannot be put forward for any reason.

In case of problems, please contact DATALOGIC AUTOMATION Service Department: Tel.: +39 051 6765611 Fax.: +39 051 6759324

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Instruction Manual SG2 EXTENDED

9. DEVICE MAINTENANCE

SG2 safety light curtains do not require special maintenance operations. To avoid the reduction of the operative distance, optics protective front surfaces shall be cleaned at regular intervals. To this end, use soft cotton cloths damped in water; do not apply too much pressure onto the surface so as not to make it dull.

Please do not use on plastic surfaces or light curtain painted surfaces:

 alcohol or solvents  wool or synthetic cloths  paper or other abrasive materials

9.1. Product disposal

Under current Italian and European laws, DATALOGIC AUTOMATION is not obliged to take care of product disposal at the end of its life. DATALOGIC AUTOMATION recommends to dispose of the product in compliance with local laws or contact authorised waste collection centres.

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SG2 EXTENDED Instruction Manual

10. TECHNICAL DATA

ELECTRICAL DATA Power supply (Vdd):

24 Vdc  20

Consumption (TX):

2 W max

Consumption (RX):

3.5 W max (without load)

Outputs:

2 PNP

Short-circuit protection:

1.4 A max

Output current:

0.5 A max / each output

Output voltage – status ON:

Vdd –1 V min

Output voltage – status OFF

0.2 V max

Capacitive load:

2.2 uF @ 24Vdc max Response times: See chapter 11 Protected height: 150..1800mm Safety category: Type 2 Auxiliary functions: Reset / Test / EDM / Range selection and manual /

Automatic Restart

Electrical protection: Class I / Class III (see sect.4.2)

Connections: M12 4 poles for emitter

M12 8 poles for receiver Cables length (for power supply): 50 m. max OPTICAL DATA Emitting light (  ):

Infrared, LED (950 nm) Resolution: 30 - 50 - 90 mm Operating distance: 0.2…19 m Ambient light rejection: IEC-61496-2 MECHANICAL AND ENVIRONMENTAL DATA Operating temperature: 0…+ 55 °C Storage temperature: -25…+ 70 °C Humidity: 15…95 % (no condensation) Mechanical protection: IP 65 (EN 60529) Vibrations: Width 0.35 mm,

Frequency 10 … 55 Hz

20 sweep per axis, 1octave/min (EN 60068-2-6) Shock resistance: 16 ms (10 G) 1,000 shocks per axis

(EN 60068-2-29) Housing material: Painted aluminium (yellow RAL 1003) Front side material: PMMA Caps material: PC MAKROLON Weight: 1,3 kg per linear metre

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Instruction Manual SG2 EXTENDED

11. LIST OF AVAILABLE MODELS

Model

Protected Height

(mm)

No.

Beams

Response time

(msec)

Resolution

(mm)

SG2-30-015-OO-E-C 150 8 8 30

SG2-30-030-OO-E-C 300 16 9 30

SG2-30-045-OO-E-C 450 24 11 30

SG2-30-060-OO-E-C 600 32 12 30

SG2-30-075-OO-E-C 750 40 14 30

SG2-30-090-OO-E-C 900 48 15 30

SG2-30-105-OO-E-C 1050 56 17 30

SG2-30-120-OO-E-C 1200 64 18 30

SG2-30-135-OO-E-C 1350 72 20 30

SG2-30-150-OO-E-C 1500 80 21 30

SG2-30-165-OO-E-C 1650 88 23 30

SG2-30-180-OO-E-C 1800 96 24 30

SG2-50-030-OO-E-C 300 9 9 50

SG2-50-045-OO-E-C 450 13 10 50

SG2-50-060-OO-E-C 600 17 11 50

SG2-50-075-OO-E-C 750 21 12 50

SG2-50-090-OO-E-C 900 25 14 50

SG2-50-105-OO-E-C 1050 29 15 50

SG2-50-120-OO-E-C 1200 33 16 50

SG2-50-135-OO-E-C 1350 37 17 50

SG2-50-150-OO-E-C 1500 41 18 50

SG2-50-165-OO-E-C 1650 45 19 50

SG2-50-180-OO-E-C 1800 49 20 50

SG2-90-030-OO-E-C 300 5 9 90

SG2-90-045-OO-E-C 450 7 10 90

SG2-90-060-OO-E-C 600 9 11 90

SG2-90-075-OO-E-C 750 11 12 90

SG2-90-090-OO-E-C 900 13 13 90

SG2-90-105-OO-E-C 1050 15 14 90

SG2-90-120-OO-E-C 1200 17 15 90

SG2-90-135-OO-E-C 1350 19 16 90

SG2-90-150-OO-E-C 1500 21 17 90

SG2-90-165-OO-E-C 1650 23 18 90

SG2-90-180-OO-E-C 1800 25 19 90

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SG2 EXTENDED Instruction Manual

EN ISO 13849-1

EN 954-1

EN IEC 61508

EN IEC 62061

Prob. of danger

failure/hour

Life span

Mean Time to

Dangerous Failure

Average Diagnostic

Coverage

Safe Failure Fraction

Hardware Fault

Tolerance

Product PL CAT SIL SIL CL

PFHd

(1/h)

(years)

MTTFd (years)

DC SFF

SG2-30-015-OO-E-C