Datalogic SG-BWS-T4 User 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
2
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:
- installation
- diagnostics and troubleshooting
- electrical connection
- user interface warnings
- commissioning and setup
- conformity and type approval
- application
- care and maintenance
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:
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
Definitions, symbols used:
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.

SG-BWS-T4
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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
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
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:
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.
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.

SG-BWS-T4
4
Further to the 7-segment display (for diagnostics purposes) the warning components include 3 LEDs:
LED
Indication
POWER
Device is powered correctly
NORMAL
Safety outputs closed
SAFE
Safety outputs open
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.
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.
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:
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
Tab. 3 Photocells signalling
Please refer to the relevant user manual for further details about photocells operation.

SG-BWS-T4
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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.

SG-BWS-T4
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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.