SICK C4000 Select User manual

OPERATING INSTRUCTIONS
C4000 Select
Safety Light Curtain
GB

Operating Instructions
C4000 Select
2©SICK AG • Industrial Safety Systems • Germany • All rights reserved 8012247/RI61/2007-11-30
This document is protected by the law of copyright, whereby all rights established therein remain with the com-
pany SICK AG. Reproduction of this document or parts of this document is only permissible within the limits of the
legal determination of Copyright Law. Alteration or abridgement of the document is not permitted without the
explicit written approval of the company SICK AG.

Operating Instructions
C4000 Select
8012247/RI61/2007-11-30 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 3
List of contents
List of contents
1 About this document.........................................................................................................6
1.1 Function of this document....................................................................................6
1.2 Target group ..........................................................................................................6
1.3 Scope .....................................................................................................................6
1.4 Depth of information.............................................................................................6
1.5 Abbreviations.........................................................................................................7
1.6 Symbols used ........................................................................................................7
2 On safety.............................................................................................................................9
2.1 Qualified safety personnel....................................................................................9
2.2 Applications of the device.....................................................................................9
2.3 Correct use ..........................................................................................................10
2.4 General safety notes and protective measures ................................................10
2.5 Protection of the environment............................................................................11
3 Product description.........................................................................................................12
3.1 Special features ..................................................................................................12
3.2 Operating principle of the device .......................................................................12
3.2.1 C4000 Select components...............................................................12
3.2.2 The light curtain principle .................................................................13
3.2.3 Device variants..................................................................................13
3.2.4 Standalone and cascaded systems .................................................13
3.3 Examples of range of use ...................................................................................17
3.4 Status indicators and C4000 Select message center ......................................18
3.4.1 Message center of the C4000 Select sender unit ..........................18
3.4.2 Message center of the C4000 Select receiver unit ........................19
3.4.3 Optional integrated LED....................................................................20
4 Configuration ...................................................................................................................21
4.1 Extended I/O........................................................................................................22
4.2 Beam coding........................................................................................................23
4.3 Scanning range ...................................................................................................25
4.4 Floating blanking.................................................................................................27
5 Installation and mounting ..............................................................................................29
5.1 Determining the minimum safety distance .......................................................29
5.1.1 Minimum safety distance to the hazardous area............................29
5.1.2 Hazard approach...............................................................................30
5.1.3 Minimum safety distance according to ANSI/CSA standards
and OSHA regulations.......................................................................31
5.1.4 Minimum safety distance according to EN 999 and EN 294.........32
5.1.5 Minimum distance to reflective surfaces ........................................33
5.2 Steps for mounting the device ...........................................................................34
5.2.1 Mounting with swivel mount bracket ...............................................36
5.2.2 Mounting with side bracket ..............................................................38
5.2.3 Mounting with rigid mounting bracket.............................................40
5.3 Laser alignment ..................................................................................................41

Operating Instructions
C4000 Select
4©SICK AG • Industrial Safety Systems • Germany • All rights reserved 8012247/RI61/2007-11-30
List of contents
6 Electrical installation ..................................................................................................... 43
6.1 Bottom end cap with system connection M12× 5 male .................................. 44
6.2 Bottom end cap with system connection M12× 5 male and extended
I/O connection M12× 5 female ......................................................................... 44
6.3 Top end cap with extended I/O M12× 5 female connection ........................... 46
7 Commissioning................................................................................................................ 47
7.1 Display sequence during power-up.................................................................... 47
7.2 Aligning sender and receiver..............................................................................47
7.3 Test notes............................................................................................................ 48
7.3.1 Tests before the first commissioning .............................................. 48
7.3.2 Regular inspection of the protective device by qualified
safety personnel ............................................................................... 48
7.3.3 Daily functional checks of the protective device ............................ 49
8 Configuration................................................................................................................... 50
9 Care and maintenance ................................................................................................... 51
10 Fault diagnosis ................................................................................................................ 52
10.1 What to do in case of faults ...............................................................................52
10.2 SICK Support....................................................................................................... 52
10.3 Error displays of the diagnostics LEDs .............................................................. 52
10.4 Error displays of the 7@segment display ............................................................ 54
11 Technical specifications ................................................................................................ 55
11.1 Data sheet........................................................................................................... 55
11.2 Response time .................................................................................................... 58
11.2.1 Calculating the host/standalone response time ............................ 58
11.2.2 Calculating the guest 1 response time............................................ 59
11.2.3 Calculating the guest 2 response time............................................ 60
11.2.4 Response time calculation examples.............................................. 60
11.3 Table of weights.................................................................................................. 63
11.3.1 C4000 Select .................................................................................... 63
11.3.2 Deflector mirrors PNS75 and PNS125............................................ 63
11.4 Dimensional drawings ........................................................................................ 64
11.4.1 C4000 Select receiver (all variants) ................................................ 64
11.4.2 C4000 Select sender (all variants).................................................. 65
11.4.3 Swivel mount bracket ....................................................................... 66
11.4.4 Side mount bracket .......................................................................... 66
11.4.5 Standard L-type mounting brackets ................................................67
11.4.6 Deflector mirror PNS75.................................................................... 68
11.4.7 Deflector mirror PNS125.................................................................. 69

Operating Instructions
C4000 Select
8012247/RI61/2007-11-30 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 5
List of contents
12 Ordering information.......................................................................................................70
12.1 Delivery ................................................................................................................70
12.2 C4000 Select without extension connection.....................................................70
12.3 C4000 Select with integrated LED status indicator..........................................71
12.4 C4000 Select with top end cap extension connection .....................................71
12.5 C4000 Select with bottom end cap system and extension connections.........72
12.6 C4000 Select with bottom end cap system/extension connections and
integrated LED status indicator..........................................................................72
12.7 C4000 Select with bottom extension connection (receiver only).....................73
12.8 C4000 Select with bottom extension connection and integrated LED
status indicator (receiver only)...........................................................................73
12.9 Additional front screen (weld spark guard) .......................................................74
12.10 Deflector mirror ...................................................................................................74
12.10.1 Deflector mirror PNS75 for protective field width 0 … 12 m
(total)..................................................................................................74
12.10.2 Deflector mirror PNS125 for protective field width
4 … 18.5 m (total) .............................................................................74
12.11 Accessories..........................................................................................................75
13 Annex ................................................................................................................................77
13.1 EC declaration of conformity ..............................................................................77
13.2 Checklist for the manufacturer ..........................................................................78
13.3 List of tables........................................................................................................79
13.4 List of illustrations...............................................................................................80

Chapter 1Operating Instructions
C4000 Select
6©SICK AG • Industrial Safety Systems • Germany • All rights reserved 8012247/RI61/2007-11-30
About this document
1About this document
Please read this chapter carefully before working with this documentation and the C4000
Select.
1.1 Function of this document
These operating instructions are designed to address the technical personnel of the
machine manufacturer or the machine operator in regards to safe mounting, installation,
configuration, electrical installation, commissioning, operation and maintenance of the
C4000 Select safety light curtain.
These operating instructions do not provide instructions for operating machines on which
the safety light curtain is, or will be, integrated. Information on this is to be found in the
appropriate operating instructions of the machine.
1.2 Target group
These operating instructions are addressed to planning engineers, developers and the
operators of plants and systems which are to be protected by one or several C4000 Select
safety light curtains. It also addresses persons who integrate the C4000 Select into a ma-
chine, initialize its use, or who are in charge of servicing and maintaining the device.
1.3 Scope
These operating instructions apply to the C4000 Select safety light curtain with one of the
following entries on the type label in the field Operating Instructions:
8012198
8012198 / RI61
This document is part of SICK part number 8012198 (operating instructions “C4000
Select” in all available languages).
1.4 Depth of information
These operating instructions contain information on:
installation and mounting
electrical installation
commissioning and configuration
care and maintenance
fault, error diagnosis and
troubleshooting
part numbers
conformity and approval
of the C4000 Select safety light curtain.
Planning and using protective devices such as the C4000 Select also require specific tech-
nical skills which are not detailed in this documentation.
When operating the C4000 Select, the national, local and statutory rules and regulations
must be observed.
General information on health and safety at work and accident prevention using opto-elec-
tronic protective devices can be found in the brochure “Safe Machines with opto-electronic
protective devices” from SICK.
Note

Operating Instructions Chapter 1
C4000 Select
8012247/RI61/2007-11-30 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 7
About this document
We also refer you to the SICK homepage on the Internet at
www.sick.com
Here you will find information on:
sample applications
alist of frequently asked questions about the C4000 Select
these operating instructions in different languages for viewing and printing
certificates on the prototype test, the EC declaration of conformity and other documents
1.5 Abbreviations
Electro-sensitive protective equipment (e.g. C4000 Select)
Output signal switching device
The probability of failure per hour in accordance with the functional safety testing
requirements outlined in IEC 61508
Performance level in accordance with EN ISO 13849@1:2006
Safety integrity level in accordance with IEC 61508/IEC 62061
1.6 Symbols used
Recommendations are designed to give you some assistance in your decision-making
process with respect to a certain function or a technical measure.
Refer to notes for special features of the device.
Display indicators show the status of the 7@segment display of sender or receiver:
Constant indication of characters, e.g. 2
When using an inverted mounting of the C4000 Select, you must take into account that
the information presented by the 7-segment display will also be inverted.
LED symbols describe the state of a diagnostics LED. Examples:
Red The red LED is illuminated constantly.
Red The red LED is flashing.
Off The LED is off.
Instructions for taking action are shown by an arrow. Read carefully and follow the instruc-
tions for action.
Warning!
Awarning indicates an actual or potential risk or health hazard. They are designed to help
you to prevent accidents.
Read carefully and follow the warnings!
Sender and receiver
In drawings and diagrams, the symbol denotes the sender and the symbol denotes
the receiver.
Note
ESPE
OSSD
PFH
PL
SIL
Recommendation
Note

Red, Red, Off
Take action …

WARNING
 

Chapter 1Operating Instructions
C4000 Select
8©SICK AG • Industrial Safety Systems • Germany • All rights reserved 8012247/RI61/2007-11-30
About this document
The term “dangerous state”
The dangerous state (standard term) of the machine is always shown in the drawings and
diagrams of this document as the movement of a machine part. In practical operation,
there may be a number of different dangerous states:
machine movements
electrical conductors
visible or invisible radiation
a combination of several risks and hazards

Operating Instructions Chapter 2
C4000 Select
8012247/RI61/2007-11-30 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 9
On safety
2On safety
This chapter deals with your own safety and the safety of the equipment operators.
Please read this chapter carefully before working with the C4000 Select or with the
machine protected by the C4000 Select.
2.1 Qualified safety personnel
The C4000 Select safety light curtain must be installed, connected, commissioned and
serviced only by qualified safety personnel. Qualified safety personnel are defined as
persons who …
due to their specialist training and experience have adequate knowledge of the power-
driven equipment to be checked
and
who have been instructed by the responsible machine operator in the operation of the
machine and the current valid safety guidelines
and
are sufficiently familiar with the applicable official health and safety regulations,
directives and generally recognized engineering practice (e.g. DIN standards, VDE
stipulations, engineering regulations from other EC member states) that they can
assess the work safety aspects of the power-driven equipment
and
who have access to these operating instructions and who have read and understood
them.
As a rule these are qualified safety personnel from the ESPE manufacturer or also those
persons who have been appropriately trained at the ESPE manufacturer, are primarily
involved in checking ESPE and are allocated the task by the organization operating the
ESPE.
2.2 Applications of the device
The C4000 Select safety light curtain is an electro-sensitive protective equipment (ESPE)
rated to:
type 4 in accordance with IEC 61496@1and @2
SIL 3 in accordance with IEC 61508 and IEC 62061
category 4 in accordance with EN 954@1:1997
performance level “e” in accordance with EN ISO 13849@1:2006
The physical resolution of the C4000 Select is 30 mm with a maximum protective field
width of up to 21 m and available protective field heights from 300 up to 1800 mm. Con-
figurable parameters are set using DIP switches.
The device is suitable for:
hazardous point protection (hand protection)
hazardous area protection
access protection

Chapter 2Operating Instructions
C4000 Select
10 ©SICK AG • Industrial Safety Systems • Germany • All rights reserved 8012247/RI61/2007-11-30
On safety
Access to the hazardous point must be allowed only through the protective field. The
plant/system is not allowed to start as long as personnel are within the hazardous area.
Refer to chapter 3.3 “Examples of range of use” on page 17 for an illustration of the
protection modes.
Only use the safety light curtain as an indirect protective measure!
An opto-electronic protective device provides indirect protection, e.g., by switching off the
power at the source of the hazard. It cannot provide protection from parts thrown out, nor
from emitted radiation. Transparent objects are not detected.
Depending on the application, mechanical protection devices may be required in addition
to the safety light curtain.
The C4000 Select safety light curtain operates as a standalone system, comprising a sen-
der and receiver, or in combination with other extended C4000 Select systems, SICK S300
or S3000 safety laser scanners. This means that the protective field can be adapted to
suit individual safety requirements.
2.3 Correct use
The C4000 Select safety light curtain must be used only as defined in section 2.2 “Applica-
tions of the device”. It must be used only by qualified safety personnel and only on the
machine where it has been installed and initialized by qualified safety personnel in
accordance with these operating instructions.
If the device is used for any other purposes or modified in any way—also during mounting
and installation—any warranty claim against SICK AG and its subsidiary companies shall
become void.
2.4 General safety notes and protective measures
Safety notes
Please observe the following procedures in order to ensure the correct and safe use of the
safety light curtain C4000 Select.
The national/international rules and regulations apply to the installation, use and
periodic technical inspections of the safety light curtain, in particular:
–Machinery Directive 98/37/EEC
–Equipment Usage Directive 89/655/EEC
–the work safety regulations/safety rules
–other relevant health and safety regulations
Manufacturers and operators of the machine with which the safety light curtain is used
are responsible for obtaining and observing all applicable safety regulations and rules.
The notices, in particular the test regulations (see “Test notes” on page 48) of these
operating instructions (e.g. on use, mounting, installation or integration into the existing
machine controller) must be observed.
Changes to the configuration of the devices can degrade the protective function. After
every change to the configuration you must therefore reverify and validate the effective-
ness of the protective device (e.g. C4000 Select).
The person who makes the change is also responsible for the correct protective function
of the device.

WARNING
Note

WARNING

Operating Instructions Chapter 2
C4000 Select
8012247/RI61/2007-11-30 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 11
On safety
The tests must be carried out by authorized qualified safety personnel and must be re-
corded and documented to ensure that the tests can be reconstructed and retraced at
any time.
The operating instructions must be made available to the operator of the machine
where the C4000 Select safety light curtain is installed. The machine operator is to be
instructed in the use of the device by qualified safety personnel and must be instructed
to read the operating instructions.
The external voltage supply of the device must be capable of buffering brief mains vol-
tage failures of 20 ms as specified in EN 60204@1. Suitable power supplies are availa-
ble as accessories from SICK (i.e. model PS50W@24V, SICK part number 7028789 or
PS95W@24V, SICK part number 7028790).
2.5 Protection of the environment
The C4000 Select safety light curtain has been designed to minimize environmental
impact. It uses only a minimum of power and natural resources.
At work, always act in an environmentally responsible manner. For this reason please note
the following information on disposal.
Disposal
Always dispose of unserviceable or irreparable devices in compliance with
local/national rules and regulations with respect to waste disposal.
We would be pleased to be of assistance on the disposal of this device. Contact your
local SICK representative.
The disposal of Instapak® foam inserts included in the C4000 Select packaging is com-
pletely compatible with waste-to-energy facilities. Instapak® foam has high energy con-
tent similar to that of coal. Instapak® foam can actually be used to aid in the process-
ing of other less combustible materials. The process leaves less than one-percent ash
and is completely free of any heavy metals. Instapak® foam also has a recycling pro-
gram available to help companies meet their recycling needs. Instapak® foam may be
returned to any one of more than twenty-five worldwide locations. Refer on the internet
to http://www.instapak.com/ for additional information.
Notes

Chapter 3Operating Instructions
C4000 Select
12 ©SICK AG • Industrial Safety Systems • Germany • All rights reserved 8012247/RI61/2007-11-30
Product description
3Product description
This chapter provides information on the special features and properties of the C4000
Select safety light curtain. It describes the construction and the operating principle of the
device, in particular the different operating modes.
Please read this chapter before mounting, installing and commissioning the device.
3.1 Special features
The C4000 Select supports the following special features:
integrated laser and alignment bar graph
configuration via DIP switches
simple diagnostic codes
an optional LED status indicator
cascading additional C4000 Select system(s) or a single S300/S3000 safety laser
scanner
2beam codes possible in addition to non-coded operation
status display with 7@segment display
one or two beam floating blanking
3.2 Operating principle of the device
3.2.1 C4000 Select components
Please refer to chapter 11 “Technical specifications” on page 55 for the data sheet.
Please refer to pages 64ff. for the dimensional drawings.
Fig.
1
:
Components of the
C4000 Select
Host without extension
connection or — in case
guest
1 connected — with
extension connection
Optional: 1. Guest system
without extension
connection or — in case
guest
2 connected — with
extension connection
Optional: 2. Guest system
with or without extension
connection

Operating Instructions Chapter 3
C4000 Select
8012247/RI61/2007-11-30 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 13
Product description
3.2.2 The light curtain principle
The C4000 Select safety light curtain consists of a sender and a receiver (Fig. 1). Between
these two units is the protective field, defined by a protective field height and a protective
field width.
The construction height determines the height of the protective field of the appropriate
system. For the exact protective field height, please see Tab. 40ff. in chapter 11.4
“Dimensional drawings” on page 64.
The width of the protective field is derived from the dimension of the light path between
sender and receiver and must satisfy the specification requirements for the protective field
(see “Technical specifications” on page 55).
Sender and receiver automatically synchronize themselves optically. An electrical connec-
tion between both components is not required.
The C4000 Select is modular in construction. All optical and electronic components and
assemblies are housed in a slim and torsionally rigid housing.
3.2.3 Device variants
The C4000 Select sender and receiver devices support several end cap configurations.
You must decide which end cap is best suited for your application at time of order place-
ment. The bottom end cap supports the system connection and optional extended I/O
functionality. Three top end cap options are available: cover only, with an optional
integrated LED or with an optional extended I/O connection.
There are several variants of the C4000 Select:
without any extension connection (no extended I/O capability)
without any extension connection (no extended I/O capability) with integrated LED on
the top end cap of the receiver unit
with extension connection (supports cascading) located on the bottom end cap with the
system connection
with extension connection (supports cascading) located on the top end cap with a sepa-
rate bottom end cap having the system connection
with extension connection (supports cascading) located on the bottom end cap with the
system connection with integrated LED on the top end cap of the receiver unit
3.2.4 Standalone and cascaded systems
The C4000 Select allows you to coordinate multiple protective devices (e.g. additional
C4000 Select devices or SICK S300/S3000 safety laser scanner) in a single safety
system.
Amaximum of three C4000 Select devices can be connected in series as a “cascade”. The
following configurations are possible:
standalone operation of a single C4000 Select system
cascade of a host C4000 Select with a guest C4000 Select
cascade of a host C4000 Select with two guest C4000 Select devices
cascade of a host C4000 Select with a SICK S300/S3000 safety laser scanner
Cascaded devices are connected using the extended I/O connection. The extended I/O
connection may be located either beside the system connection (extended I/O connection
on the bottom end cap) or separate from the system connection (extended I/O connection
on the top end cap).

Chapter 3Operating Instructions
C4000 Select
14 ©SICK AG • Industrial Safety Systems • Germany • All rights reserved 8012247/RI61/2007-11-30
Product description
The benefits of cascading include:
no additional external circuitry required making connection of additional protective
devices easy to implement
the protective field height may differ among the individual C4000 Select devices
acombination of hazardous point (i.e. C4000 Select) and area protection devices (e.g.
SICK S300/S3000 safety laser scanners) can be realized in a single safety system.
The following sections describe the different configurations supported by the C4000
Select. For ease of understanding, only the receiver units have been shown in subsequent
figures.
Ensure that you set the Extended I/O DIP switch correctly for your application!
When cascading additional protective devices to the C4000 Select, you must ensure that
the Extended I/O DIP switch has been set to Enabled.Failure to enable the Extended I/O
function in cascaded applications will expose personnel to risk of the associated hazard!
Please refer to chapter 4 “Configuration” on page 21 for additional details regarding
extended I/O DIP switch settings and functionality.
Standalone operation
Standalone operation can be realized with all C4000 Select variants. Regardless of vari-
ant, DIP switch configuration can be set for standalone operation (refer to chapter 4 “Con-
figuration” on page 21 for additional information).
Cascade of multiple C4000 Select systems
The C4000 Select supports the cascade of up to three 1800 mm protective height C4000
Select sender and receiver pairs. This may be realized only when the extended I/O connec-
tion is available. When three light curtains are cascaded together, a physical barrier may
be necessary to prevent optical interference between the two light curtains configured with
the same beam code if they are positioned too closely together. Refer to section 4.2
“Beam coding” on page 23 for additional information regarding this requirement.

WARNING
Fig.
2
:
C4000 Select
recei-
vers used in standalone
operation (shown without
extended I/O capability)

Operating Instructions Chapter 3
C4000 Select
8012247/RI61/2007-11-30 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 15
Product description
There are two methods of implementing C4000 Select cascades. The first method utilizes
anextended I/O connection located on the top end cap for the first C4000 Select (host)
and the second C4000 Select (guest 1). The third C4000 Select (guest 2) utilizes a system
connection only.
Alternatively, the second method of implementing cascaded C4000 Select devices uses an
extended I/O connection that is located on the same end cap as the system connection.
Sender units cannot be physically connected to receiver units when cascading C4000
Select devices. Always physically connect sender units together when cascading. Always
physcially connect receiver units together when cascading C4000 Select devices.
Fig.
3
:
C4000 Select
recei-
vers used in cascade with
extension connection (on top
end cap)
Fig.
4
:
C4000 Select
recei-
vers used in cascade with
extension connection (on
same end cap as system
connection)
Note
Guest 1
Host
Guest 2
Guest 1
Host
Guest 2

Chapter 3Operating Instructions
C4000 Select
16 ©SICK AG • Industrial Safety Systems • Germany • All rights reserved 8012247/RI61/2007-11-30
Product description
Cascade of C4000 Select and SICK S300/S3000 safety laser scanner
The C4000 Select supports the cascade of a single SICK S300 or S3000 safety laser scan-
ner. Connection of the S300 or S3000 occurs on the extended I/O connection to provide
both power and connection of safety relevant signals (i.e. safety outputs from the safety
scanner). The extended I/O connection may be located on either the top end cap or with
the system connection on the bottom end cap of the C4000 Select.
Fig.
5
:
C4000 Select
receiver
with extended I/O connection
(shown on top end cap and
with system connection) used
to cascade a SICK S3000
safety laser scanner

Operating Instructions Chapter 3
C4000 Select
8012247/RI61/2007-11-30 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 17
Product description
3.3 Examples of range of use
The C4000 Select safety light curtain operates correctly as a protective device only if the
following conditions are met:
The control of the machine must be electrical.
The dangerous state of the machine must be transferable at any time into a safe state.
Sender and receiver unit must be mounted so that objects penetrating the hazardous
area are safely identified by the C4000 Select.
An external reset/restart function (e.g. button) must be fitted outside the hazardous
area such that it cannot be operated by a person working inside the hazardous area.
When operating the reset button, the operator must have full visual command of the
hazardous area.
The statutory and local rules and regulations must be observed when installing and
using the device.
Fig.
6
:
Hazardous point pro-
tection using a C4000 Select
safety light curtain
(left)
Fig. 7: Hazardous area pro-
tection using a C4000 Select
safety light curtain
(right)
Fig.
8
:
Access protection
using a C4000 Select safety
light curtain cascaded with
an S3000 safety laser
scanner

Chapter 3Operating Instructions
C4000 Select
18 ©SICK AG • Industrial Safety Systems • Germany • All rights reserved 8012247/RI61/2007-11-30
Product description
3.4 Status indicators and C4000 Select message center
The C4000 Select provides simple operational status information using LED indicators and
a 7@segment display.
3.4.1 Message center of the C4000 Select sender unit
The message center for the C4000 Select sender unit has two LEDs that provide operatio-
nal status as shown in the figure below:
LED Name Display Meaning
Yellow Supply voltage OK
POWER Off Check the power to the sender unit
Red The sender unit has detected an internal error. Replace sender
unit.
REPLACE
Off Internal self-test completed successfully or power is off.
Fig.
9
:
Message center for
C4000 Select sender unit
Tab.
1
:
C4000 Select
LED
indication on sender
Laser alignment

Operating Instructions Chapter 3
C4000 Select
8012247/RI61/2007-11-30 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 19
Product description
3.4.2 Message center of the C4000 Select receiver unit
The message center for the C4000 Select receiver unit consists of several LED groups and
a 7@segment LED display that provides operational status as shown in the figure below:
LED Name Display Meaning
Green Output signal switching devices (OSSD)/safety outputs
are ON
Red Output signal switching devices (OSSD)/safety outputs
are OFF
OUTPUT
Off No power is currently supplied to the receiver unit
Red Extended I/O safety inputs are Inactive (Low) i.e. OFFEXT I/O
Off Extended I/O safety inputs are Active (High) i.e. ON or
Extended I/O has been disabled
Yellow Blanking is activeBLANKING
Off Blanking is inactive
Yellow Indicates that one or more beams are aligned between sen-
der and receiver units. The first LED will be Yellow when
one of the synchronization beams has been aligned. When
all five (5) LEDs are Yellow,this indicates all beams are
aligned between sender and receiver units, but there is a
weak signal.
ALIGNMENT
LEDs
Green When all five (5) LEDs are Green,this indicates that all
beams are aligned between sender and receiver units.
An internal error has been detected. Replace receiver unit.
Check DIP switch settings
Optical signals have been detected from multiple sender
units. Change beam code of this C4000 Select
sender/receiver pair.
Check power supply voltage
Check system wiring for errors
7?segment
display
Check extended I/O wiring for errors
Fig.
10
:
Message center for
C4000 Select receiver unit
Tab.
2
:
C4000 Select
recei-
ver LED display indication

Chapter 3Operating Instructions
C4000 Select
20 ©SICK AG • Industrial Safety Systems • Germany • All rights reserved 8012247/RI61/2007-11-30
Product description
3.4.3 Optional integrated LED
When the receiver unit includes the optional integrated LED, the following LED states are
defined:
Integrated LED Meaning
Red Output signal switching devices (OSSD)/safety outputs are OFF
Green Output signal switching devices (OSSD)/safety outputs are ON
Off No power is currently supplied to the receiver unit
Tab.
3
:
C4000 Select
inte
gra-
ted LED display indication