SICK C4-RD User manual
OPERATING INSTRUCTIONS
C4-RD
Safety light curtain
Described product
C4-RD
Manufacturer
SICK AG
Erwin-Sick-Str. 1
79183 Waldkirch
Germany
Legal information
This work is protected by copyright. Any rights derived from the copyright shall be
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 modi‐
fication, abridgment or translation of this document is prohibited without the express
written permission of SICK AG.
The trademarks stated in this document are the property of their respective owner.
© SICK AG. All rights reserved.
Original document
This document is an original document of SICK AG.
2O P E R A T I N G I N S T R U C T I O N S | C4-RD 8025644/19Z2/2021-03-09 | SICK
Subject to change without notice
Contents
1 About this document........................................................................ 6
1.1 Purpose of this document........................................................................ 6
1.2 Scope......................................................................................................... 6
1.3 Target groups of these operating instructions........................................ 6
1.4 Additional information.............................................................................. 6
1.5 Symbols and document conventions...................................................... 7
2 Safety information............................................................................ 8
2.1 General safety notes................................................................................ 8
2.2 Correct use................................................................................................ 8
2.3 Inappropriate use..................................................................................... 8
2.4 Requirements for the qualification of personnel.................................... 8
3 Product description........................................................................... 10
3.1 Structure and function............................................................................. 10
3.2 Product characteristics............................................................................ 11
3.2.1 Device overview....................................................................... 11
3.2.2 Absence of blind zones........................................................... 11
3.2.3 Alignment aid........................................................................... 11
3.2.4 Status indicators...................................................................... 11
3.3 Example applications............................................................................... 13
4 Project planning................................................................................ 15
4.1 Manufacturer of the machine.................................................................. 15
4.2 Operator of the machine.......................................................................... 15
4.3 Design........................................................................................................ 15
4.3.1 Scanning range and protective field width............................. 16
4.3.2 Minimum distance from the hazardous point....................... 16
4.3.3 Minimum distance to reflective surfaces............................... 19
4.3.4 Protection against interference from systems in close prox‐
imity to each other................................................................... 20
4.4 Integration in electrical control................................................................ 21
4.4.1 Restart interlock...................................................................... 23
4.4.2 External device monitoring (EDM).......................................... 24
4.4.3 Connection diagrams.............................................................. 25
4.5 Testing plan............................................................................................... 25
4.5.1 Test rod check.......................................................................... 26
4.5.2 Visual check of the machine and the protective device........ 29
5 Mounting............................................................................................. 30
5.1 Safety......................................................................................................... 30
5.2 Unpacking.................................................................................................. 30
5.3 Installation................................................................................................ 31
5.3.1 Mounting the QuickFix bracket............................................... 34
CONTENTS
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5.3.2 Mounting the FlexFix bracket.................................................. 35
5.3.3 Mounting the Compact FlexFix bracket.................................. 37
5.3.4 Mounting the flat mount bracket............................................ 39
5.3.5 Mounting the swivel mount bracket....................................... 40
5.3.6 Mounting the upgrade bracket............................................... 43
6 Electrical installation........................................................................ 44
6.1 Safety......................................................................................................... 44
6.2 System connection (M12, 5-pin)............................................................. 45
6.3 System connection via connection cable (M12, 5-pin to 8-pin)............ 46
7 Commissioning.................................................................................. 47
7.1 Safety......................................................................................................... 47
7.2 Overview.................................................................................................... 48
7.3 Switching on.............................................................................................. 48
7.4 Sender and receiver alignment................................................................ 48
7.4.1 Aligning the sender and receiver............................................ 49
7.4.2 Alignment with the QuickFix bracket...................................... 49
7.4.3 Alignment with the FlexFix bracket or with the upgrade
bracket...................................................................................... 50
7.4.4 Alignment with the Compact FlexFix bracket......................... 51
7.4.5 Alignment with the swivel mount bracket.............................. 52
7.4.6 Indication of the alignment quality......................................... 53
7.5 Check during commissioning and modifications.................................... 53
8 Operation............................................................................................ 54
8.1 Safety......................................................................................................... 54
8.2 Regular thorough check........................................................................... 54
9 Maintenance...................................................................................... 55
9.1 Safety......................................................................................................... 55
9.2 Regular cleaning....................................................................................... 55
9.3 Regular thorough check........................................................................... 56
10 Troubleshooting................................................................................. 57
10.1 Safety......................................................................................................... 57
10.2 Diagnostic LEDs........................................................................................ 57
10.2.1 Fault indicators........................................................................ 57
11 Decommissioning............................................................................. 60
11.1 Disposal..................................................................................................... 60
12 Technical data.................................................................................... 61
12.1 Data sheet................................................................................................. 61
12.2 Response time.......................................................................................... 63
12.3 Power consumption.................................................................................. 63
12.4 Length of cable......................................................................................... 64
CONTENTS
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12.5 Table of weights........................................................................................ 64
12.6 Dimensional drawings.............................................................................. 65
13 Ordering information........................................................................ 67
13.1 Scope of delivery....................................................................................... 67
13.2 Ordering information................................................................................. 67
14 Accessories........................................................................................ 69
14.1 Brackets.................................................................................................... 69
14.2 Mounting accessories.............................................................................. 72
14.3 Connectors................................................................................................ 72
14.4 Alignment aid............................................................................................ 73
14.5 Cleaning agent.......................................................................................... 73
14.6 Test rods.................................................................................................... 73
15 Annex.................................................................................................. 74
15.1 Compliance with EU directives................................................................. 74
15.2 Note on standards.................................................................................... 75
15.3 Checklist for initial commissioning and commissioning........................ 76
16 List of figures..................................................................................... 77
17 List of tables....................................................................................... 78
CONTENTS
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1 About this document
1.1 Purpose of this document
These operating instructions contain information required during the life cycle of the
safety light curtain.
These operating instructions are available to all those who work with the safety light
curtain.
Please read these operating instructions carefully and make sure that you understand
the content fully before working with the safety light curtain.
1.2 Scope
These operating instructions only apply to the C4-RD safety light curtain with one of the
following type label entries in the “Operating Instructions” field:
•8025642
This document is included with the following SICK part numbers (this document in all
available language versions):
8025642
1.3 Target groups of these operating instructions
Some chapters of these operating instructions are intended for certain target groups.
However, the entire operating instructions are relevant for intended use of the product.
Table 1: Target groups and selected chapters of these operating instructions
Target group Chapters of these operating instructions
Project developers (planners, developers,
designers)
"Project planning", page 15
"Technical data", page 61
"Accessories", page 69
Installers "Mounting", page 30
Electricians "Electrical installation", page 44
Safety experts (such as CE authorized repre‐
sentatives, compliance officers, people who
test and approve the application)
"Project planning", page 15
"Commissioning", page 47
"Technical data", page 61
"Checklist for initial commissioning and com‐
missioning", page 76
Operators "Operation", page 54
"Troubleshooting", page 57
Maintenance personnel "Maintenance", page 55
"Troubleshooting", page 57
1.4 Additional information
www.sick.com
The 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 ABOUT THIS DOCUMENT
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1.5 Symbols and document conventions
The following symbols and conventions are used in this document:
Safety notes and other notes
DANGER
Indicates a situation presenting imminent danger, which will lead to death or serious
injuries if not prevented.
WARNING
Indicates a situation presenting possible danger, which may lead to death or serious
injuries if not prevented.
CAUTION
Indicates a situation presenting possible danger, which may lead to moderate or minor
injuries if not prevented.
NOTICE
Indicates a situation presenting possible danger, which may lead to property damage if
not prevented.
NOTE
Indicates useful tips and recommendations.
Instructions to action
bThe arrow denotes instructions to action.
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:
oThe LED is off.
ÖThe LED is flashing.
OThe LED is illuminated continuously.
Sender and receiver
These symbols indicate the sender and receiver of the device:
sThe symbol indicates the sender.
rThe symbol indicates the receiver.
ABOUT THIS DOCUMENT 1
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2 Safety information
2.1 General safety notes
DANGER
If the safety component is integrated incorrectly, the dangerous state may be ended to
late.
bPlan the integration of the safety component in accordance with the machine
requirements, see "Project planning", page 15.
2.2 Correct use
The C4-RD safety light curtain is an electro-sensitive protective device (ESPE) and is
suitable for the following applications:
•Hazardous point protection
•Access protection
•Hazardous area protection
The C4-RD safety light curtain must only be used within the limits of the prescribed and
specified technical data and operating conditions at all times.
Any instance of improper use, incorrect modification, or manipulation of the C4-RD
safety light curtain shall void any warranty provided by SICK AG; furthermore, SICK AG
shall not accept any responsibility or liability for any resulting damage and consequen‐
tial damage.
2.3 Inappropriate use
The safety light curtain works as an indirect protective measure and cannot provide
protection from parts thrown out nor from emitted radiation. Transparent objects are
not detected.
Among others, the C4-RD safety light curtain is not suitable for the following applica‐
tions:
•Outdoors
•Underwater
•In explosion-hazardous areas
•At altitudes over 3,000 m above sea level
•In environments with increased levels of ionizing radiation
2.4 Requirements for the qualification of personnel
The safety light curtain must be planned in, installed, connected, commissioned and
serviced only by qualified safety personnel.
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.
2 SAFETY INFORMATION
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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.
Commissioning
For 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
status.
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.
SAFETY INFORMATION 2
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3 Product description
3.1 Structure and function
Overview
The C4-RD safety light curtain is an electro-sensitive protective device (ESPE) consisting
of a sender and receiver.
A series of parallel infrared light beams forms a protective field between sender and
receiver that protects the hazardous area (hazardous point, access, and hazardous
area protection). When one or more beams are completely interrupted, the safety light
curtain 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 dangerous state.
Sender and receiver automatically synchronize themselves optically. An electrical con‐
nection between both components is not required.
r
s
Figure 1: Sender and receiver
Protective field height
The protective field height indicates the range within which the test rod belonging to the
safety light curtain is reliably detected.
Protective field width
The protective field width is the dimension of the light path between sender and
receiver. The maximum protective field width is limited by the scanning range.
Resolution
The resolution describes the size of the smallest object detected by the safety light
curtain in the protective field. The resolution corresponds to the diameter of the test rod
belonging to the safety light curtain.
The safety light curtain has a resolution of 14 mm. This resolution provides finger
protection.
The safety light curtain has a resolution of 30 mm. This resolution provides hand
protection.
3 PRODUCT DESCRIPTION
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