SICK deTem4 Core Ex Operating Instructions Manual
deTem4 Core Ex
Multiple light beam safety device
O P E R A T I N G I N S T R U C T I O N S
Described product
deT
em4 Core Ex
Manufacturer
SICK AG
Erwin-Sick-Str. 1
79183 Waldkirch
Germany
Legal information
his work is protected by copyright. Any rights derived from the copyright shall be
T
reserved for SICK AG. Reproduction of this document or parts of this document is only
permissible within the limits of the legal determination of Copyright Law. Any modifica‐
tion, abridgment or translation of this document is prohibited without the express writ‐
ten permission of SICK AG.
The trademarks stated in this document are the property of their respective owner.
© SICK AG. All rights reserved.
Original document
T
his document is an original document of SICK AG.
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Contents
CONTENTS
1 About this document........................................................................ 6
1.1 Function of this document....................................................................... 6
1.2 Scope......................................................................................................... 6
1.3 Target groups and structure of these operating instructions................ 6
1.4 Additional information.............................................................................. 7
1.5 Symbols and document conventions...................................................... 7
2 Safety information............................................................................ 9
2.1 General safety notes................................................................................ 9
2.2 Intended use............................................................................................. 9
2.3 Requirements for the qualification of personnel.................................... 11
3 Product description........................................................................... 13
3.1 Setup and function................................................................................... 13
3.2 Product characteristics............................................................................ 14
3.2.1 Status indicators...................................................................... 14
3.3 Example applications............................................................................... 16
4 Project planning................................................................................ 17
4.1 Manufacturer of the machine.................................................................. 17
4.2 Operating entity of the machine.............................................................. 17
4.3 Design........................................................................................................ 17
4.3.1 Scanning range and beam separation................................... 18
4.3.2 Minimum distance from the hazardous point....................... 18
4.3.3 Minimum distance from reflective surfaces.......................... 20
4.3.4 Protection against interference from systems in close prox‐
y to each other................................................................... 22
imit
4.4 Integrating into the electrical control....................................................... 22
4.4.1 Restart interlock...................................................................... 25
4.4.2 External device monitoring (EDM).......................................... 25
4.4.3 Connection diagrams.............................................................. 26
4.5 Testing plan............................................................................................... 26
4.5.1 Test rod check.......................................................................... 27
4.5.2 Visual check of the machine and the protective device........ 28
5 Mounting............................................................................................. 29
5.1 Safety......................................................................................................... 29
5.2 Unpacking.................................................................................................. 30
5.3 Mounting................................................................................................... 30
5.3.1 Mount the multiple light beam safety device in the explo‐
sion-proof enclosure (only if being used in North America).. 32
5.3.2 Mount the optional cable gland.............................................. 34
5.3.3 Mount the handles to the cover of the explosion-proof
enclosure.................................................................................. 34
5.3.4 Mount the multiple light beam safety device........................ 35
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CONTENTS
6 Electrical installation........................................................................ 42
6.1 Safety......................................................................................................... 42
6.2 System connection (M12, 5-pin)............................................................. 44
6.3 System connection via connection cable (M12, 5-pin to 8-pin)............ 45
7 Commissioning.................................................................................. 46
7.1 Safety......................................................................................................... 46
7.2 Overview.................................................................................................... 46
7.3 Switching on.............................................................................................. 47
7.4 Sender and receiver alignment................................................................ 47
7.4.1 Aligning the sender and receiver............................................ 47
7.4.2 Aligning the sender, receiver, and deflector mirror................ 48
7.4.3 Alignment with the alignment bracket................................... 49
7.4.4 Indication of the alignment quality......................................... 50
7.5 Check during commissioning and modifications.................................... 51
8 Operation............................................................................................ 52
8.1 Safety......................................................................................................... 52
8.2 Regular thorough check........................................................................... 52
9 Maintenance...................................................................................... 53
9.1 Safety......................................................................................................... 53
9.2 Regular cleaning....................................................................................... 53
9.3 Regular thorough check........................................................................... 55
10 Troubleshooting................................................................................. 56
10.1 Safety......................................................................................................... 56
10.2 Diagnostic LEDs........................................................................................ 56
10.2.1 Fault indicators........................................................................ 56
11 Decommissioning............................................................................. 59
11.1 Protection of the environment................................................................. 59
11.2 Disposal..................................................................................................... 59
12 Technical data.................................................................................... 60
12.1 Data sheet................................................................................................. 60
12.2 Table of weights........................................................................................ 62
12.3 Dimensional drawings.............................................................................. 63
13 Ordering information........................................................................ 66
13.1 Scope of delivery....................................................................................... 66
13.2 Ordering information deTem4 Core Ex.................................................... 66
14 Accessories........................................................................................ 67
14.1 Brackets.................................................................................................... 67
14.2 Mounting accessories.............................................................................. 68
14.3 Connectivity............................................................................................... 68
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CONTENTS
14.4 Alignment aid............................................................................................ 68
14.5 Deflector mirrors....................................................................................... 69
14.5.1 Function and use..................................................................... 69
14.5.2 Change in scanning range using deflector mirrors................ 69
14.5.3 Deflector mirror – ordering information................................. 69
14.5.4 Deflector mirror PNS75 - ordering information...................... 69
14.5.5 Deflector mirror PNS125 - ordering information................... 69
14.6 Test rods.................................................................................................... 70
15 Annex.................................................................................................. 71
15.1 Compliance with EU directives................................................................. 71
15.2 Note on specified standards.................................................................... 72
15.3 Checklist for initial commissioning and commissioning........................ 73
16 List of figures..................................................................................... 74
17 List of tables....................................................................................... 75
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BOUT THIS DOCUMENT
1 A
1 About this document
1.1 Function of this document
These operating instructions contain the information needed during the life cycle of the
iple light beam safety device.
mult
Operating instructions of the multiple light beam safety device must be made available
to all people who work with the device.
Please read these operating instructions carefully and make sure that you understand
the content fully before working with the multiple light beam safety device.
1.2 Scope
These operating instructions only apply to the deTem4 Core Ex multiple light beam
s
afety device with the following type label entry in the Operating Instructions field:
8022833
•
This document is included with the following SICK part numbers (this document in all
available language versions):
8022833
•
1.3 Target groups and structure of these operating instructions
These operating instructions are intended for the following target groups: project devel‐
oper
s (planners, developers, designers), installers, electricians, safety experts (such as
CE authorized representatives, compliance officers, people who test and approve the
application), operators, and maintenance personnel.
The structure of these operating instructions is based on the life cycle phases of the
multiple light beam safety device: project planning, mounting, electrical installation,
commissioning, operation, and maintenance.
In many applications, therefore, the target groups consist of the manufacturer and the
operating entity of the machine in which the multiple light beam safety device is inte‐
grated:
Area of responsibility Target group Special chapters of these operating instruc‐
Manufacturer Project developers
(planners, developers,
designers)
Installers Mounting, pa
Electricians Electrical installation, page 42
Safety experts Project planning, pa
Operating entity Operators Operation, pa
Maintenance person‐
l
ne
1
Chapters not listed here are intended for all target groups. All target groups must understand the safety
no
tes in all of the operating instructions!
1
t
ions
Project planning, page 17
Technical data, page 60
Accessories, page 67
Commissioning, page 46
Technical data, page 60
Checklist for initial commissioning and com‐
missioning, page 73
Troubleshooting, page 56
Maintenance, page 53
Troubleshooting, page 56
Ordering information, page 66
ge 29
ge 17
ge 52
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In other applications, the operating organization is also the manufacturer of the equip‐
ment w
ith the corresponding allocation of the target groups.
1.4 Additional information
www.sick.com
T
he following information is available on the Internet:
This document in other languages
•
Data sheets and application examples
•
CAD data and dimensional drawings
•
Certificates (e.g. EU declaration of conformity)
•
Guide for Safe Machinery Six steps to a safe machine
•
1.5 Symbols and document conventions
The following symbols and conventions are used in this document:
Safety notes and other notes
DANGER
Indic
ates a situation presenting imminent danger, which will lead to death or serious
injuries if not prevented.
ABOUT THIS DOCUMENT 1
WARNING
Indicates a situation presenting possible danger, which may lead to death or serious
injuries if not prevented.
CAUTION
ates a situation presenting possible danger, which may lead to moderate or minor
Indic
injuries if not prevented.
NOTICE
Indic
ates a situation presenting possible danger, which may lead to property damage if
not prevented.
NOTE
Indic
ates useful tips and recommendations.
Instructions to action
he arrow denotes instructions to action.
T
b
1. The sequence of instructions for action is numbered.
2. Follow the order in which the numbered instructions are given.
✓
The check mark denotes the result of an instruction.
LED symbols
These symbols indicate the status of an LED:
The LED is off.
o
The LED is flashing.
Ö
The LED is illuminated continuously.
O
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1 A
BOUT THIS DOCUMENT
Sender and receiver
T
hese symbols indicate the sender and receiver of the device:
The symbol indicates the sender.
s
The symbol indicates the receiver.
r
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2 Safety information
2.1 General safety notes
DANGER
H
azard due to lack of effectiveness of the protective device
In the case of non-compliance, it is possible that the dangerous state of the machine
may not be stopped or not stopped in a timely manner.
Please read this document carefully and make sure that you understand the con‐
b
tent fully before working with the device.
Follow all safety notes in this document.
b
WARNING
Risk of ineffectiveness of the protective device
Please observe the following information to ensure safe and correct use of the device
deTem4 Core Ex.
National and international regulations and guidelines must be observed when
b
mounting, using, and commissioning electrical devices as well as when carrying
out regular technical inspections in explosion-hazardous areas. Article 500 of the
National Electrical Code and ATEX Directive 2014/34/EU shall apply in particular.
Manufacturers of and entities operating machines using the device are responsi‐
ble for ensuring that all applicable safety regulations and guidelines are complied
with.
These operating instructions must be made available to the operator of the
b
machine on which the device is used. Qualified safety personnel must instruct the
operator in how to use the device. The operator must also be directed to read and
follow the operating instructions.
SAFETY INFORMATION 2
DANGER
Ris
Failure to observe this instruction can result in a risk of ignition from potential sparking.
b
NOTE
SIC
•
•
2.2 Intended use
Overview
T
device (ESPE) and is suitable for the following applications:
•
•
The multiple beam light beam safety device deTem4 Core Ex is suitable for use in
enc
defined in the National Electrical Code® and Canadian Electrical Code®:
k of ignition
Ensure that only accessories that are approved for explosion-hazardous areas are
used.
K provides more information about the following explosion-proof connections:
Joint between glass and cover
Joint between cover and explosion-proof enclosure
he deTem4 Core Ex multiple light beam safety device is an electro-sensitive protective
Single-sided access protection
Multi-sided access protection
losed spaces only. It has UL/cUL certification for the following hazardous areas
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2 SAFETY INFORMATION
•
•
•
The multiple light beam safety device deTem4 Core Ex also complies with these stan‐
ards: EN 60079-0:2012/A11:2013/IEC 60079-0 Edition 6.0, EN 60079-1:2014/IEC
d
60079-1 Edition 7.0, EN 60079-31:2014/IEC 60079-31 Edition 2.0 and is certified for
the following hazardous areas:
•
•
•
•
DEMKO 14 ATEX 1315X
IECEx UL 14.0034X
The multiple light beam safety device deTem4 Core Ex does not emit any paint wetting
im
rials into the surrounding area.
The deTem4 Core Ex multiple light beam safety device must only be used within the lim‐
its of the prescribed and specified technical data and operating conditions at all times.
ss I, Groups C, D
Cla
Class II, Groups E, F, G
Class III
X II 2 G Ex db IIB T6
X II 2 D Ex tb IIIC T56 °C Db IP6X
Ex db IIB T6
Ex tb IIIC T56 °C Db IP6X
pairment substances or volatile silicones and does not expel any fixed parts or mate‐
Any instance of improper use, incorrect modification, or manipulation of the deTem4
Core Ex multiple light beam safety device shall void any warranty provided by SICK AG;
furthermore, SICK AG shall not accept any responsibility or liability for any resulting
damage and consequential damage.
Important information
DANGER
H
azard due to lack of effectiveness of the protective device
Persons and parts of the body to be protected may not be recognized in case of nonobservance.
The multiple light beam safety device works as an indirect protective measure and can‐
not provide protection from pieces thrown from application nor from emitted radiation.
Transparent objects are not detected.
Only use the multiple light beam safety device as an indirect protective measure.
b
DANGER
Ris
k of ignition
Failure to observe this information could result in a risk of ignition.
The sender, receiver, and cables delivered with the device deTem4 Core Ex are not
b
explosion-proof. The person purchasing, assembling, and using the safety light cur‐
tain is responsible for fitting the cables in suitable explosion-proof conduits and/or
cable glands to ensure the integrity of the system.
The type label on each individual explosion-proof enclosure contains information
b
on the device’s hazardous area class and group. Every device that penetrates the
explosion-proof enclosure must be suitable for the environment in which the explo‐
sion-proof enclosure is installed with regard to its hazardous area class and group
or zone.
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SAFETY INFORMATION 2
DANGER
k of ignition
Ris
Failure to observe this information could result in a risk of ignition.
Only if the device is used outside North America:
A cable gland must be mounted.
b
The cable gland must be certified for d and tb environments.
b
DANGER
k of ignition
Ris
Failure to observe this information could result in a risk of ignition.
Only if the device is used in North America:
Any conduit openings that are not in use must be sealed. Sealing fittings must turn
b
at least five (5) full revolutions and be at least 3.175 mm thick (1/8 of an inch).
Conduit sealing fittings must be applied in each installed conduit run (located a
b
maximum of 457 mm (18 inches) away from the explosion-proof enclosure) in
order to comply with the provisions of the most recent version of the National Elec‐
trical Code, Article 501.15 and/or 502.15, and all other applicable regulations.
Reasonably foreseeable misuse
g others, the deTem4 Core Ex multiple light beam safety device is not suitable for
Amon
the following applications:
Outdoors
•
Underwater
•
At altitudes over 3,000 m above sea level
•
In environments with increased levels of ionizing radiation
•
2.3 Requirements for the qualification of personnel
The multiple light beam safety device must be configured, installed, connected, com‐
sioned, and serviced only by qualified safety personnel.
mis
Project planning
For project planning, a person is considered competent when he/she has expertise and
experience in the selection and use of protective devices on machines and is familiar
with the relevant technical rules and national work safety regulations.
Mechanical mounting
For mechanical mounting, a person is considered competent when he/she has the
expertise and experience in the relevant field and is sufficiently familiar with the appli‐
cation of the protective device on the machine that he/she can assess its operational
safety status.
Electrical installation
For electrical installation, a person is considered competent when he/she has the
expertise and experience in the relevant field and is sufficiently familiar with the appli‐
cation of the protective device on the machine that he/she can assess its operational
safety status.
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AFETY INFORMATION
2 S
Commissioning
F
or commissioning, a person is considered competent when he/she has the expertise
and experience in the relevant field and is sufficiently familiar with the application of
the protective device on the machine that he/she can assess its operational safety sta‐
tus.
Operation and maintenance
For operation and maintenance, a person is considered competent when he/she has
the expertise and experience in the relevant field and is sufficiently familiar with the
application of the protective device on the machine and has been instructed by the
machine operator in its operation.
Maintenance and thorough checks should only be conducted by qualified, trained per‐
sonnel who are familiar with the regulations and instructions relating to explosion-haz‐
ardous environments, particularly:
Ignition protection methods
•
Mounting regulations
•
Regulations on distances to be maintained
•
An operator must clean the multiple light beam safety device. Additional information for
the operator of the machine: see "Operation", page 52, and see "Regular cleaning",
page 53.
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3 Product description
3.1 Setup and function
The deTem4 Core Ex multiple light beam safety device is an electro-sensitive protective
vice (ESPE) consisting of a sender and receiver.
de
Parallel infrared light beams between the sender and receiver protect the hazardous
area. When one or more light beams are completely interrupted, the multiple light beam
safety device reports the interruption in the light path to the secure output signal
switching devices (OSSDs) by a signal change. The machine or its control must safely
analyze the signals (for example using a safe control or safety relays) and stop the dan‐
gerous state.
Sender and receiver automatically synchronize themselves optically. An electrical con‐
nection between both components is not required.
PRODUCT DESCRIPTION 3
Figure 1: Sender and receiver
Beam separation and number of beams
T
he beam separation is the distance between two adjacent light beams, measured
from the center of one beam to the center of the next.
The beam separation and number of beams depend on the device variant.
Scanning range
T
he scanning range is the maximum dimension of the light path between sender and
receiver. It depends on the device variant.
The scanning range is reduced by using deflector mirrors.
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ERR
PWR
2
1
3 P
RODUCT DESCRIPTION
Further topics
"D
ata sheet", page 60
•
"Deflector mirrors", page 69
•
3.2 Product characteristics
3.2.1 Status indicators
The sender and receiver light emitting diodes indicate the operational status.
Sender indicators
Figure 2: Sender indicators
wo light emitting diodes on the sender indicate the operational status:
T
Position LED color Display Labeling
1
2
Yellow Status indicator PWR
Red Fault indicator ERR
Complete overview of the light emitting diode statuses and their meanings: see "Dia
nostic LEDs", page 56.
g‐
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Receiver indicators
ERR
OSSD
1 2 3 4
2
1
3
Figure 3: Receiver indicators
PRODUCT DESCRIPTION 3
S
ix light emitting diodes on the receiver indicate the operational status:
Position LED color Display Labeling
1
2
3
Red/green OSSD status OSSD
Red Fault indicator ERR
Blue Alignment quality 1, 2, 3, 4
The blue alignment quality light emitting diodes in combination with the red flashing
R LED also denote faults.
ER
Complete overview of the light emitting diode statuses and their meanings: see "Diag‐
nostic LEDs", page 56.
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3 P
RODUCT DESCRIPTION
3.3 Example applications
Figure 4: Single-sided access protection
16
Figure 5: Multi-sided access protection
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4 Project planning
4.1 Manufacturer of the machine
DANGER
H
azard due to lack of effectiveness of the protective device
Persons and parts of the body to be protected may not be recognized in case of nonobservance.
Use of the multiple light beam safety device requires a risk assessment. Check
b
whether additional protective measures are required.
Comply with the applicable national regulations derived from the application (e.g.,
b
work safety regulations, safety rules, or other relevant safety guidelines).
Do not combine the components of the multiple light beam safety device with
b
components from other multiple light beam safety devices.
Apart from the procedures described in this document, the components of the
b
multiple light beam safety device must not be opened.
The components of the multiple light beam safety device must not be tampered
b
with or changed.
Improper repair of the protective device can lead to a loss of the protective func‐
b
tion. Do not carry out any repairs on the device components.
PROJECT PLANNING 4
4.2 Operating entity of the machine
DANGER
H
azard due to lack of effectiveness of the protective device
Persons and parts of the body to be protected may not be recognized in case of nonobservance.
Changes to the electrical integration of the multiple light beam safety device in the
b
machine control and changes to the mechanical mounting of the multiple light
beam safety device necessitate a new risk assessment. The results of this risk
assessment may require the operating entity of the machine to meet a manufac‐
turer’s obligations.
Apart from the procedures described in this document, the components of the
b
multiple light beam safety device must not be opened.
The components of the multiple light beam safety device must not be tampered
b
with or changed.
Improper repair of the protective device can lead to a loss of the protective func‐
b
tion. Do not carry out any repairs on the device components.
4.3 Design
This chapter contains important information about the design.
Information on the individual steps for mounting the device: see "Mounting", page 29.
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ROJECT PLANNING
4 P
DANGER
azard due to lack of effectiveness of the protective device
H
Persons and parts of the body to be protected may not be recognized in case of non-
observance.
Make sure that the following design requirements are met so that the multiple
b
light beam safety device can fulfill its protective function.
Sender and receiver must be arranged such that persons or parts of the body
°
are reliably detected when they enter the hazardous area.
Ensure that nobody can pass under the lowest light beam, pass over the
°
highest light beam, get between two light beams, or pass by the side of the
protective device.
If people can stay between the protective device and the hazardous point
°
without being detected, check if additional protective measures (e.g., restart
interlock) are required.
4.3.1 Scanning range and beam separation
Important information
DANGER
H
azard due to lack of effectiveness of the protective device
Persons and parts of the body to be protected may not be recognized in case of nonobservance.
The multiple light beam safety device can only be mounted to machines on which
b
the protective field width does not change when the device is switched on.
Beam separation and number of beams
he beam separation is the distance between two adjacent light beams, measured
T
from the center of one beam to the center of the next.
The beam separation and number of beams depend on the device variant.
Scanning range
T
he scanning range is the maximum dimension of the light path between sender and
receiver. It depends on the device variant.
The scanning range is reduced by using deflector mirrors.
Further topics
"Minimum dis
•
"Technical data", page 60
•
"Deflector mirrors", page 69
•
4.3.2 Minimum distance from the hazardous point
A minimum distance must be maintained between the multiple light beam safety
de
vice and the hazardous point. This distance is required to prevent a person or part of
the body from reaching the hazardous area before the dangerous state of the machine
state has completed.
tance from reflective surfaces", page 20
18
Calculating the minimum distance according to ISO 13855
The calculation of the minimum distance is based on international or national stan‐
dards and statutory requirements applicable at the place of installation of the machine.
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If the minimum distance is calculated according to ISO 13855, then it depends on the
f
ollowing points:
Machine stopping time (time interval between triggering the sensor function and
•
the end of the machine’s dangerous state)
Response time of the protective device, see "Technical data", page 60
•
Approach speed of personnel
•
Type of approach: orthogonal (at right angles)
•
Parameters specified based on the application
•
For the USA (scope of OSHA and ANSI), different regulations may apply, e.g.:
a) Laws: Code of Federal Regulations, Title 29 (CFR29) Part 1910.217
b) Standards: ANSI B11.19
Complementary information
A
dditional information is available in the ISO 13855 standard and in the Guidelines
Safe Machinery.
SICK offers a stopping/run-down time measurement service in many countries.
4.3.2.1 Calculating minimum distance from the hazardous point
PROJECT PLANNING 4
Important information
DANGER
Minimum distance from the hazardous point is too small
The dangerous state of the machine may not be stopped or not be stopped in a timely
manner due to a minimum distance that is too small.
Calculate the minimum distances for the machine in which the multiple light beam
b
safety device is integrated.
When mounting the multiple light beam safety device, observe the minimum dis‐
b
tance.
Approach
he example shows the calculation of the minimum distance for an orthogonal (at right
T
angles) approach to the multiple light beam safety device. Depending on the applica‐
tion and the ambient conditions, a different calculation may be required (e.g., at a dif‐
ferent angle to the direction of approach or an indirect approach).
1. Calculate S using the following formula:
S = 1,600 mm/s × T + C
where:
S = minimum dis
°
T = machine stopping time + response time of the protective device after
°
interruption in the light path in seconds (s)
C = supplement in accordance with ISO 13855:
°
The reach/approach speed is already included in the formula.
If it is not possible to reach over the protective device: C = 850 mm
•
If it is possible to reach over the protective device, the value CRO must be
•
used for C in accordance with ISO 13855, provided that this is greater
than 850 mm: C ≥ 850 mm and C ≥ C
tance in millimeters (mm)
RO
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3
4
1
2
4 P
ROJECT PLANNING
Figure 6: Minimum distance from the hazardous point
Minimum distance S
1
Height of the light beams above ground
2
Hazardous point
3
Depending on the application and distance, persons must be prevented from standing
4
be
hind the protective device.
Example calculation
Mac
hine stopping time = 290 ms
Response time after interruption of the light path = 20 ms
T = 290 ms + 20 ms = 310 ms = 0.31 s
S = 1,600 mm/s × 0.31 s + 850 mm = 1,346 mm
4.3.3 Minimum distance from reflective surfaces
Overview
T
he light beams from the sender may be deflected by reflective surfaces and dispersive
media. This can prevent an object from being detected.
Therefore, all reflective surfaces and objects (e.g., material bins, machine table, etc.)
must maintain a minimum distance (a) from the light beams. This minimum distance
(a) must be maintained on all sides of the light beams. This applies in horizontal, verti‐
cal, and diagonal directions as well as at the ends of the multiple light beam safety
device. The same area must be free of dispersive media (e.g., dust, fog, or smoke).
The minimum distance (a) depends on the distance (D) between sender and receiver.
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Subject to change without notice
rs
D
a
10 20 30 40 50 60 70 D/
m
500
1000
2000
1500
2500
3000
3500
a/mm
131
3
PROJECT PLANNING 4
Figure 7: Minimum distance from reflective surfaces
Important information
DANGER
H
azard due to lack of effectiveness of the protective device
Reflective surfaces and dispersive media can prevent persons or parts of the body to
be protected from being properly reflected and therefore, they remain undetected.
Make sure that all reflective surfaces and objects maintain a minimum distance
b
from the light beams.
Make sure that no dispersive media (e.g., dust, fog, or smoke) are within the calcu‐
b
lated minimum distance from the light beams.
Determining minimum distance to reflective surfaces
1.
Determine the distance between sender and receiver D in meters (m)
2. Read the minimum distance a in millimeters (mm) in the graph or calculate it
based on the respective formula from table 1:
Figure 8: Graph, minimum distance from reflective surfaces
able 1: Formula for calculating the minimum distance from reflective surfaces
T
Distance between sender and
eceiver D in m
r
D ≤ 3 m a = 131 mm
D > 3 m a = tan (2.5°) × 1,000 mm/m × D = 43.66 × 1 mm/m ×
Calculating the minimum distance from reflective sur‐
faces a in mm
D
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21
s
rs
r
!
"
"
!
s
rs
r
ROJECT PLANNING
4 P
4.3.4 Protection against interference from systems in close proximity to each other
Overview
1
Figure 9: Preventing mutual interference from system
The infrared light beams of the sender of system 1 can interfere with the receiver of
system 2. This can disrupt the protective function of system 2. This would mean that
the operator is at risk.
Avoid such installation situations or take appropriate action, e.g., install optically
opaque partitions or reverse the direction of transmission of a system.
and system
2
Important information
DANGER
azard due to lack of effectiveness of the protective device
H
Systems of multiple light beam safety devices in close proximity to each other can
mutually interfere with each other.
Use suitable measures to prevent interference between systems in close proximity
b
to each other.
4.3.4.1 Using reversed direction of transmission
The direction of transmission of the system 2 c
switching the positions of the sender and receiver. With reversed direction of mounting,
the receiver 2 is not affected by the infrared light from the sender 1.
an be changed during mounting by
Figure 10: Trouble-free operation due to reversed direction of transmission of system
tem
2
4.4 Integrating into the electrical control
This chapter contains important information about integration in the electrical control.
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ormation about the individual steps for electrical installation of the device: see "Elec‐
Inf
trical installation", page 42.
1
and sys‐
Subject to change without notice
PROJECT PLANNING 4
Requirements for use
T
he output signals of the protective device must be analyzed by downstream controllers
in such a way that the dangerous state of the machine is ended safely. Depending on
the safety concept, the signal is analyzed by, e.g., safety relays or a safety controller.
DANGER
azard due to lack of effectiveness of the protective device
H
In the case of non-compliance, it is possible that the dangerous state of the machine
may not be stopped or not stopped in a timely manner.
Make sure that the following control and electrical requirements are met so that
b
the multiple light beam safety device can fulfill its protective function.
t be possible to electrically influence the control of the machine.
It mus
•
The electrical control of the machine must meet the requirements of IEC 60204-1.
•
Depending on the regulations which apply at the place of installation, a restart
•
interlock may be required. Because the multiple light beam safety device does not
have this function, it must be implemented in the external control if required.
When using a safety controller, different signal levels of both OSSDs must be
•
detected depending on the regulations which apply at the place of installation or
the required reliability of the safety function. The maximum discrepancy time toler‐
ated by the control must be selected according to the application.
The OSSD1 and OSSD2 output signals must not be connected to each other.
•
In the machine controller, the signals of both OSSDs must be processed sepa‐
•
rately.
Figure 11: Dual-channel and isolated connection of OSSD1 and OSSD2
he machine must switch to the safe state at any time if at least one of the two
T
•
OSSDs switches to the OFF state.
Prevent the formation of a potential difference between the load and the protec‐
•
tive device. If you connect loads to the OSSDs (output signal switching devices)
that then also switch if controlled with negative voltage (e.g., electro-mechanical
contactor without reverse polarity protection diode), you must connect the 0 V con‐
nections of these loads and those of the corresponding protective device individu‐
ally and directly to the same 0 V terminal strip. In the event of a fault, this is the
only way to ensure that there can be no potential difference between the 0 V con‐
nections of the loads and those of the corresponding protective device.
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