Datalogic SG-BWS-T4 Instruction Manual

ORIGINAL INSTRUCTIONS (ref. 2006/42/EC)

Datalogic S.r.l.
Via S. Vitalino 13
40012 Calderara di Reno
Italy

SG BWS-T4 Instruction Manual
Ed.: 01/2018 Rev. B

© 2012 – 2018 Datalogic S.p.A. and/or its affiliates  ALL RIGHTS RESERVED.  Without limiting the rights
under copyright, no part of this documentation may be reproduced, stored in or introduced into a retrieval
system, or transmitted in any form or by any means, or for any purpose, without the express written
permission of Datalogic S.p.A. and/or its affiliates.

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 other trademarks and brands are property 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.

29/01/18

CE COMPLIANCE

CE marking states the compliance of the product with essential requirements listed in the applicable
European directive. Since the directives and applicable standards are subject to continuous updates, and
since Datalogic promptly adopts these updates, therefore the EU declaration of conformity is a living
document. The EU declaration of conformity is available for competent authorities and customers through
Datalogic commercial reference contacts. Since April 20th, 2016 the main European directives applicable to
Datalogic products require inclusion of an adequate analysis and assessment of the risk(s). This evaluation
was carried out in relation to the applicable points of the standards listed in the Declaration of Conformity.
Datalogic products are mainly designed for integration purposes into more complex systems. For this reason
it is under the responsibility of the system integrator to do a new risk assessment regarding the final
installation.

Warning

This is a Class A product. In a domestic environment this product may cause radio interference in which
case the user may be required to take adequate measures.

INDEX

1. GENERAL INFORMATION ........................................................................................................................ 2

1.1. Purpose of this document: ............................................................................................................................... 2

1.2. Intended readers: ............................................................................................................................................ 2

1.3. Usage information: .......................................................................................................................................... 2

2. PRODUCT GENERAL DESCRIPTION ...................................................................................................... 3

2.1. Package Content ............................................................................................................................................. 3

2.2. Products components and interface ................................................................................................................ 3

2.3. Safety sensors ................................................................................................................................................. 4

2.4. Main functions managed by the control unit: ................................................................................................... 5

2.5. Typical Applications ......................................................................................................................................... 5

3. INSTALLATION .......................................................................................................................................... 7

3.1. Safety information ............................................................................................................................................ 7

3.2. Precautions to be observed for the choice and installation of the device ........................................................ 7

3.3. General information on sensors positioning .................................................................................................... 7

3.4. Minimum installation distance .......................................................................................................................... 8

3.5. Minimum distance from reflecting surfaces ................................................................................................... 10

3.6. Sensors Interference ..................................................................................................................................... 11

3.7. Installing the safety control unit ..................................................................................................................... 12

3.8. Installing the sensors ..................................................................................................................................... 12

4. ELECTRICAL CONNECTION .................................................................................................................. 14

4.1. Important installation tips ................................ ................................................................ ............................... 14

4.2. External relays connection for machine control ............................................................................................. 14

4.3. Minimum connections (1 photocell, no EDM, automatic restart) .................................................................... 15

4.4. Complete list of connections .......................................................................................................................... 16

4.5. Connecting the safety photocells: .................................................................................................................. 17

4.6. Connecting the safety photocells for SG-BWS-T4-2 model: .......................................................................... 18

4.7. Connecting the external relays and EDM ...................................................................................................... 19

4.8. Reset mode and connection of the Start/Test/Reset push-button ................................................................. 20

5. COMMISSIONING .................................................................................................................................... 22

5.1. Screen indications upon switch-on ................................................................................................................ 22

5.2. Safety devices alignment ............................................................................................................................... 22

6. DIAGNOSTICS AND WARNINGS ........................................................................................................... 23

6.1. Normal operation signalling ........................................................................................................................... 23

6.2. Failure state signalling ................................................................................................................................... 24

7. PERIODICAL CHECKS AND WARRANTY ............................................................................................. 25

7.1. Periodical checks ........................................................................................................................................... 25

7.2. Warranty ........................................................................................................................................................ 25

8. DEVICE MAINTENANCE ......................................................................................................................... 26

8.1. Product disposal ............................................................................................................................................ 26

9. TECHNICAL DATA .................................................................................................................................. 27

10. ORDER DATA .......................................................................................................................................... 29

11. OVERALL DIMENSIONS ......................................................................................................................... 30

11.1. SG-BWS-T4 .................................................................................................................................................. 30

11.2. S5-ST2,S5-ST4, SL5-ST4, S300 ................................................................................................................... 30

12. APPENDIX ................................................................................................................................................ 31

12.1. FIGURE INDEX: ............................................................................................................................................ 31

12.2. TABLES INDEX: ............................................................................................................................................ 31

SG-BWS-T4

- installation

- diagnostics and troubleshooting

- electrical connection

- user interface warnings

- commissioning and setup

- conformity and type approval

- application

- care and maintenance

ESPE

Electro sensitive protective equipment: used instead of SG-BWS-T4

EDM

External device monitoring

OSSD

Output signal switching device: output signal that can control an external safety circuit.

LED

Light emitting diode

Constant viewing of characters, e.g. A

Alternated viewing of characters, e.g. U and 5

SAFE

The red LED is always ON

 NORMAL

The LED is OFF

 NORMAL

The green LED flashes

Warning: indicates safety-related critical information. Carefully read and follow
given instructions.

1. GENERAL INFORMATION

Read this section carefully before implementing the instructions given in this manual and starting up
the SG-BWS-T4 safety system.

1.1. Purpose of this document:

These instructions for use are addressed to the manufacturer technicians or staff operating the
machine and give all necessary instructions for correct and safe assembly, setup, electric connection
and commissioning of the SG-BWS-T4 safety system.
Scope of this document excludes information about use of the machine the safety system is installed
to.

1.2. Intended readers:

The instructions for use given herein are addressed to designers, manufacturers and persons in
charge of the safety of systems to be equipped with the SG-BWS-T4. They are also addressed to the
staff in charge of installing the SG-BWS-T4 to a machine, commissioning it or servicing it.

1.3. Usage information:

These instructions for use contain the following details about the SG-BWS-T4:

Tab. 1 User manual main contents

Designing and using safety devices to integrate to the SG-BWS-T4 requires specific know-how which
is not included in this document. In particular, the applicable industry standards shall be met.

Acronyms used:

Definitions, symbols used:

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SG-BWS-T4

Power
Safe
Break

1 2 3 4 5 6 7 8

1 2 3 4 5 6 7 81 2 3 4 5 6 7 8

5| 6| 7| 8

1| 2| 3| 4

9|10|11|12

13|14|15|16

POWER
NORMAL
SAFE

POWER
NORMAL
SAFE

EN 61496-1: 2004

Safety of machinery: electrosensitive protective equipment. Part 1:
General requirements and tests.

CLC/TS 61496-2: 2006

Safety of machinery: electro-sensitive protective equipment.
Particular requirements for equipment using active optoelectronic
protective devices.

2. PRODUCT GENERAL DESCRIPTION

2.1. Package Content

 Safety Control Unit SG-BWS-T4
 Quick operations guide
 Six-monthly checklist for periodic check and maintenance

2.2. Products components and interface

Fig. 1 SG-BWS-T4-MT Appearance and user interface

SG-BWS-T4 safety system consists of a control unit enclosed in a plastic housing to be installed on
OMEGA/DIN rail equipped with 16 screw clamps that can be connected up to 4 sets of photocells of
the S5-ST, SL5-ST, S300 series.
System was designed making reference to the following regulations and standards:

The control unit fits two safety outputs (OSSD) controlled according to the status of each and every
sensor connected to the system: when a photocell detects any dangerous condition, this disables the
outputs and stops the machine, duly connected to OSSD.
At the top of SG-BWS-T4 is user interface for viewing warnings.

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SG-BWS-T4

LED

Indication

 POWER

Device is powered correctly

 NORMAL

Safety outputs closed

SAFE

Safety outputs open

Using the above photocells independently from SG-BWS-T4 does not meet EN
61496-1 and CLC/TS 61496-2 requirements and is thus not allowed.

Connection of Type 2 photocells results in the whole system category downgrade
to Type 2.

Sensor

LED

Indication

S5/SL5/S300 Emitter

 Green

Sensor correctly powered

S5 Receiver

 Green

Sensor correctly powered

/ Green

Poor/insufficient signal received

 Red

Output active

 Red

Output not active

SL5/S300 Receiver

 Green

Sensor correctly powered

/ Green

Poor/insufficient signal received

 Yellow

Output active

 Yellow

Output not active

Further to the 7-segment display (for diagnostics purposes) the warning components include 3 LEDs:

Tab. 2 Signalling LEDs

2.3. Safety sensors

4 types of photocells can be connected to the safety control unit:

 S5-5-X-X-SG-ST2: Type 2 safety photocell emitting infrared beams.
 S5-5-X-X-SG-ST4: Type 4 safety photocell emitting infrared beams.
 SL5-5-X-X-SG-ST4: Type 4 safety photocell emitting long-distance red laser beam.
 S300-5-X-X-ST4: Type 4 safety photocell for long-distance applications.

See section 10 “Order data” for further details about available photocell models.

S5 and SL5 sensors are housed in plastic tube casings featuring M18x1 thread.

Fig. 2 Safety single beam photocells S5,SL5 series (appearance)

The photocells are equipped with LEDs for operation status indication:

Tab. 3 Photocells signalling

Please refer to the relevant user manual for further details about photocells operation.

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SG-BWS-T4

2.4. Main functions managed by the control unit:

 Manual/Automatic restarting: select whether the safety outputs are automatically closed

when danger condition no longer applies or if this should happen after a manual enabling
command output through a restarting selector.

 EDM: the control unit can monitor any external contactors possibly connected downstream.

2.5. Typical Applications

The SG-BWS-T4 system is typically used as a protection to the access to dangerous areas on
machines or systems. The sensors are fixed and installed to the access area at the suitable safety
distance from the nearest danger source and output a stop control to the machine or system, if the
light beam is interrupted.
Hereafter are shown some application examples with SG-BWS-T4.

Example 1: Automatic warehouses

The access of both moving bay sides has to be protected in order to prevent operators entering the
dangerous area.

Fig. 3 Automatic warehouses protection with photocells

Solution: safety photocells are installed on both sides of the bay that are connected and driven by

one SG-BWS-T4 control unit.
Advantages: the use of tubular photocells enables installation even in reduced spaces in the

warehouse structure. SG-BWS-T4 is ideal for all applications where protection has to be guaranteed
without additional safety functions.

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SG-BWS-T4

Example 2: SMD machine protection

The access to a dangerous area must be enabled in order to carry-out maintenance procedures. The
access must be allowed by stopping only the specific area by opening the doors and not the entire
machine.

Fig. 4 Doors control by means of safety photocelss

Solution: SG-BWS-T4 is able to detect the door opening by using one or more photocells by

intersecting the interrupted beams, guaranteeing the safety condition.
Advantages: all the safety interlocks can be replaced on each door thanks to the use of photocells

and so reducing the plant cost as well as increasing flexibility.

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SG-BWS-T4

For a correct and safe use of the SG-BWS-T4, the points considered in this
section must be observed.

Make sure that the protection level assured by the device is compatible with the
real danger level of the machine to be controlled, according to EN 954-1 and EN
13849-1.

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

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

3. INSTALLATION

3.1. Safety information

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 par.

3.4, and during all working cycle phases.
The safety system should be installed and connected by a qualified technician in compliance with the
instructions specified in this manual and industry rules.
The photocells must be securely installed in a particular position so that access to the dangerous zone

is not possible without the interruption of the beams (see 3.3 “General information on sensors

positioning”).

The personnel operating in the dangerous area must be well trained and must have adequate
knowledge of all the operating procedures of the safety control unit.
The START and TEST buttons must be located outside the protected area because the operator must
check the protected area during all Test and Reset operations.
Please carefully read the instructions for the correct functioning before powering the SG-BWS-T4.

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

 The OSSD outputs 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 installed safety sensors.

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

in section 9 “Technical data”.

 Do not install the sensors close to strong and/or flashing light sources or close to similar

devices.

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

the case contact Datalogic Technical Service.

 The operating distance of the safety sensors 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 sensors lenses and so jeopardise functioning.

3.3. General information on sensors positioning

Pay special care when positioning the safety photocells so to offer effective protection. The safety
sensors should be installed in such a way that the dangerous area can only be entered after detecting
the sensitive area.
Photocells position is fixed by normative and must respect measures in Tab. 4.

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