SICK TR4 User manual

OPERATING INSTRUCTIONS
TR4 Direct Rectangular
Safety switches

Described product
TR4 Direct Rectangular
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 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
This document is an original document of SICK AG.
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Contents
1 About this document........................................................................ 5
1.1 Purpose of this document........................................................................ 5
1.2 Target group.............................................................................................. 5
1.3 Information depth..................................................................................... 5
1.4 Scope......................................................................................................... 5
1.5 Abbreviations used................................................................................... 5
2 On safety............................................................................................. 6
2.1 Qualified safety personnel....................................................................... 6
2.2 Intended use............................................................................................. 6
2.3 General safety notes and protective measures...................................... 7
3 Product description........................................................................... 8
3.1 Description of operation........................................................................... 8
3.2 Protective functions.................................................................................. 9
3.3 LED indicators........................................................................................... 9
4 Mounting............................................................................................. 10
5 Electrical installation........................................................................ 13
5.1 Notes on cULus......................................................................................... 13
5.2 Safety notes for the electrical connection.............................................. 13
5.3 Failsafety................................................................................................... 13
5.4 Connection................................................................................................ 14
5.4.1 Device connection (M12, 8-pin or cable variant).................. 14
5.4.2 Device connection (M12, 5-pin)............................................. 15
5.4.3 Connecting an individual safety switch.................................. 15
5.4.4 Series connection of several safety switches........................ 16
6 Commissioning.................................................................................. 17
6.1 Indication when switching on................................................................... 17
6.2 Teach-in (uniquely coded variants).......................................................... 17
6.2.1 Teaching in an actuator........................................................... 17
6.2.2 Teaching in and locking a uniquely coded sensor................. 18
6.2.3 Fault indicators during teach-in.............................................. 18
6.3 Inspection instructions............................................................................. 19
6.3.1 Checks before initial commissioning...................................... 19
6.3.2 Regular inspection of the protective device by qualified
safety personnel...................................................................... 19
6.3.3 Regular testing of the effectiveness of the protective
device....................................................................................... 19
7 Fault diagnosis................................................................................... 20
7.1 Response to errors................................................................................... 20
7.2 SICK Support............................................................................................. 20
CONTENTS
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7.3 Fault indicators of the Status/Diag LED.................................................. 20
7.4 Troubleshooting in safe series connection............................................. 21
8 Decommissioning............................................................................. 22
8.1 Protecting the environment...................................................................... 22
9 Technical data.................................................................................... 23
9.1 Data sheet................................................................................................. 23
9.2 Course of the OSSD test over time.......................................................... 25
9.3 Dimensional drawings.............................................................................. 26
9.3.1 Sensor dimensional drawing................................................... 26
9.3.2 Actuator dimensional drawing................................................ 27
10 Ordering information........................................................................ 28
10.1 TR4 Direct standard ordering information.............................................. 28
10.2 TR4 Direct with boundary area indication ordering information........... 28
10.3 TR4 Direct ordering information with boundary area indication and
magnetic holding force............................................................................. 28
11 Spare parts......................................................................................... 30
11.1 Replacement actuator.............................................................................. 30
12 Accessories........................................................................................ 31
12.1 Connectivity............................................................................................... 31
13 Annex.................................................................................................. 32
13.1 Compliance with EU directives................................................................. 32
CONTENTS
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1 About this document
1.1 Purpose of this document
These operating instructions provide technical personnel of the machine manufacturer
or the machine operator with instructions regarding the safe mounting, electrical instal‐
lation, commissioning, operation and maintenance of the safety switch.
These operating instructions do not provide information on operating the machine in
which a safety switch is integrated. For information about this, refer to the operating
instructions of the specific machine.
1.2 Target group
These operating instructions are intended for planning engineers, developers, and oper‐
ating entities of plants and systems that are to be protected by one or more safety
switches. They are also intended for people who integrate the safety switch into a
machine, initialize its use, or who are in charge of maintenance.
1.3 Information depth
These operating instructions contain information on the following topics:
•Mounting
•Electrical installation
•Commissioning
•Fault diagnosis and troubleshooting
•Part numbers
•Conformity
Please note that technical skills not covered by this document are also required when
planning and using protective devices.
The official and legal regulations for operating must always be complied with.
General information on the topic of safety technology can be found in the “Guide for
Safe Machinery” brochure, which can be ordered under part number 8008007.
NOTE
You can find more information at: www.sick.com.
1.4 Scope
These operating instructions are original operating instructions.
NOTE
These operating instructions only apply to safety switches with the following type label
entry in the Operating instructions field:
8023284
1.5 Abbreviations used
OSSD Output signal switching device = signal output that is responsible for
controlling the safety circuit
ABOUT THIS DOCUMENT 1
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2 On safety
2.1 Qualified safety personnel
The safety switch must only be installed, commissioned, and serviced by qualified
safety personnel. A person is authorized if he/she…
•Has sufficient skills in the field of the power-driven machinery to be inspected
based on his/her technical training and experience
and
•has been instructed by the machine operator in machine operation and the applic‐
able safety guidelines
and
•Is familiar with all relevant state occupational safety regulations, work safety regu‐
lations, guidelines, and generally accepted technical rules and standards (e.g.,
DIN standards, VDE regulations, technical rules of other power-driven machinery)
to such an extent that he/she is able to evaluate the safe condition of the power-
driven machinery
and
•Has access to and has read the operating instructions.
These are usually qualified safety personnel of the manufacturer of the protective
device or those persons who were sufficiently trained by the manufacturer of the pro‐
tective device and who are mainly tasked with testing protective devices and have been
commissioned by the operating entity of the protective device.
2.2 Intended use
The safety switch is a transponder safety switch which is activated by a non-contact
actuator and is suitable for the following applications:
•Movable physical guards
•Safe position monitoring
The safety switch must only be used within the limits of the prescribed and specified
technical data and operating conditions at all times.
Incorrect use, improper modification or manipulation of the safety switch will invalidate
any warranty from SICK; in addition, any responsibility and liability of SICK for damage
and secondary damage caused by this is excluded.
Before using the safety switch, a risk assessment must be run on the machine.
The safety switch is not suitable for the ambient conditions such as, but not limited, to
the following:
•Radioactivity (exception: natural radioactivity)
•Vacuum or high pressure
•High UV load
•In the vicinity of low-frequency RFID devices
•In the vicinity of magnetic fields
The following may impair the function of the safety switch:
•Metal subsurface or metal in direct proximity (see "Mounting", page 10)
•Passing metal chips
2 ON SAFETY
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2.3 General safety notes and protective measures
The national and international legal specifications as well as the work safety regula‐
tions/safety rules apply to the installation and use of the safety switch, to the commis‐
sioning of said device, and to recurring technical inspections.
Safety switches fulfill personal protection functions. Improper installation or manipula‐
tion can lead to serious personal injuries.
Safety switches must not be circumvented, turned away, removed, or rendered ineffec‐
tive in any other way. Observe the measures for reducing the possibilities for circumven‐
tion of an interlocking device in accordance with EN ISO 14119.
Liability is excluded in the following cases:
•Non-intended use
•Non-compliance with safety notes
•Attachment and electrical connection by non-authorized personnel
•Third-party interference
WARNING
Validate the entire system!
You are responsible for ensuring that the device is safely incorporated into a safe over‐
all system. This involves validating the entire system according to specifications such as
those defined in EN ISO 13849-2.
ON SAFETY 2
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3 Product description
This chapter provides information on the special features of the TR4 safety switch. It
describes the design and operating principle of the device.
bAlways read this chapter before you mount, install, and commission the device.
3.1 Description of operation
Structure and function
The safety switch consists of two components:
•A sensor
•A coded actuator (transponder)
The sensor is mounted on the fixed part of the protective device, the actuator on the
moving part.
When the protective device is closed, the actuator is moved towards the sensor. If the
switch-on distance is reached, the actuator code is read out and evaluated by the sen‐
sor. If a valid actuator is located in the response range of the sensor, then the sensor
sets safety outputs OSSD 1 and OSSD 2 (semiconductor outputs) to High and the Aux
application diagnostic output to Low.
If the protective device is opened and the actuator is removed from the response range
of the sensor, then it sets safety outputs OSSD 1 and OSSD 2 to Low and the Aux appli‐
cation diagnostic output to High.
Coding
There are two different types of coding:
•Universal coding
Universally coded sensors accept all universally coded TR4 actuators.
•Unique coding (products are labeled with “CODED”)
A “coded” actuator must be taught-in during commissioning. It is possible to teach
in up to 8 actuators in succession. Only the most recently taught-in actuator is
valid. Previously taught-in actuators can no longer be used.
see "Teach-in (uniquely coded variants)", page 17
Both the sensors and the actuator are coded. Universally coded sensors can only be
operated with universally coded actuators. Uniquely coded sensors can only be oper‐
ated with uniquely coded actuators.
Fault detection
Any faults that occur, including internal device faults, are detected at the latest with the
next request to close the safety contacts (e. g. during machine start). The safety switch
then switches to safe state. If a fault is detected, the safety circuit is switched off and
the Status/Diag LED shows an error (see table 5, page 20).
Safe series connection
The number of safety switches in a safe series connection is nearly limitless. This has
an influence the response times, however. Ideally, the number of safety switches in a
safe series connection is set to a maximum of 30 devices.
In a safe series connection, only safety switches with inputs In 1 and In 2 can be used,
i. e. safety switch with cable or an 8-pin M12 connector.
Safety switches with a 5-pin M12 connector can only be used individually.
3 PRODUCT DESCRIPTION
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Boundary area indication
Some variants of the safety switch are equipped with a boundary area indication. The
boundary area indication displays when the actuator is situated in the boundary area of
the response range when the sensor is active (weak signal). The Status/Diag LED then
lights up O yellow. The outputs are closed (High).
Magnetic holding force
Some variants of the safety switch are equipped with magnets. These magnets draw
the actuator to the sensor with their holding force so that the protective device (e. g. a
protective door) is held with a certain force. This makes unintended opening of the pro‐
tective device more difficult in the event of disturbances such as shock and vibration,
thereby increasing machine availability.
3.2 Protective functions
The safety switch features the following internal protective functions:
•Short-circuit protection at all outputs
•Overload protection at all outputs
•Reverse polarity protection of the supply voltage
3.3 LED indicators
Table 1: LED indicators
Status/Diag LED Meaning
o OffNo supply voltage
3 × Ö green
1 × Ö red
Power up sequence
O Green Actuator in response range
Safety outputs active
Aux application diagnostic output deactivated
O Red Actuator outside of response range
Safety outputs deactivated
Aux application diagnostic output active
Ö Yellow Sensor approaches the maximum response range (boundary area indi‐
cation, only with certain variants)
Ö Red or Ö green Error. see table 5, page 20
Further topics
•see table 4, page 18
•see table 5, page 20
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4 Mounting
DANGER
Mounting must only be done by authorized and qualified personnel!
Mounting must be done by qualified safety personnel in compliance with the following
notes and specifications.
Follow the following mounting instructions. Otherwise the guarantee becomes invalid.
NOTE
This device is part of a protective device for safeguarding a machine. A risk analysis
should be done before mounting to determine if the specifications of this device are
suitable for all foreseeable operating and environmental parameters of the machine in
which is installed.
Ambient conditions
Mount the sensor and actuator on a non-ferrous surface and at a distance from metal
parts if possible in order to avoid influencing the sensing range. If this is not possible,
the influence on assured switch-on distance Sao and assured switch-off distance SAR
must be checked.
Steps for mounting the device
1. Select the mounting position for the safety switch so that the sensor and actuator
for are easily accessible monitoring and exchange work and are protected from
damage.
2. Make sure that dangerous states are excluded when the protective device is
opened, even if the actuator has not yet reached the assured switch-off distance.
3. Observe ISO 14119 when mounting the safety switch and actuator.
4. Observe EN ISO 14119 for reducing the possibilities for circumvention of an inter‐
locking device.
5. Mount the actuator on the movable part of the protective device.
6. Mount the sensor on the fixed part of the protective device.
7. Align the sensor and actuator so that their front sides face each other at a switch-
off distance of 15 mm or closer when the protective device is closed (see figure 1,
page 10).
0
0
20
10
Sar
Sao
30
40
2020 1010 3030
1
3
2
Figure 1: Response range
1Sensing range
4 MOUNTING
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2Side deviation in mm
3Distance to sensor surface in mm
Figure 2: Approach directions
bIf necessary, attach an additional protective stop for the moving part of the protec‐
tive device.
bObserve the maximum tightening torque of 2.2 Nm for mounting the sensor and
actuator.
DANGER
Observe the following safety notes:
bThe sensor and actuator must not be used as a mechanical stop.
bPrevent manipulation such as adjustment, disassembly or circumvention of the
device which prevents proper functioning in any way. Otherwise serious injuries or
even death could be the result.
bThe integrity of the safety system can be endangered if there are available replace‐
ment actuators (risk of manipulation). This can lead to injuries or death, property
damage or economic loss. Arrange for appropriate monitoring, work processes or
alternative protective measures to regulate the use and availability of these
replacement actuators.
Mounting of several safety switches
bWhen several safety switches are mounted, observe the prescribed minimum dis‐
tance of 50 mm between the individual systems in order to avoid mutual interfer‐
ence.
MOUNTING 4
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50mm
Figure 3: Minimum distance when mounting several safety switches
4 MOUNTING
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5 Electrical installation
5.1 Notes on cULus
For use according to the requirements of UL 508, the following conditions must also be
met:
•The voltage supply must correspond to class 2 in accordance with UL 508.
•The ambient temperature must not exceed 40 °C.
5.2 Safety notes for the electrical connection
DANGER
Both safety outputs OSSD 1 and OSSD 2 (semiconductor outputs) must be evaluated
without fail in order to guarantee safety.
An incorrect connection may cause the device to malfunction or become damaged.
Please note the following:
bDo not use a control with clocking or switch off the clocking function of your control
system.
bThe device generates its own clock on output powers OSSD 1/OSSD 2. A down‐
stream controller must tolerate these test pulses, which can have a length of up to
1 ms.
bThe inputs of a connected evaluation device must be positive-switching (PNP)
inputs because the two outputs of the safety switch supply a level of the supply
voltage in the switched-on state.
bAll electrical connections must be isolated from the supply network either through
safety transformers in accordance with IEC/EN 61558-2-6 with output voltage limi‐
tation or through equivalent isolation measures.
bFor use according to the requirements of cULus, a secondary class 2 transformer
according to UL 5085-3 or a class 2 voltage supply according to UL 1310 must be
used. This requirement also applies for inputs In 1 and In 2 as well as outputs
OSSD 1 and OSSD 2 of the safety switch.
bAll electrical outputs must have an adequate suppressor for inductive loads. For
this purpose, the outputs must be protected with a suitable suppressor (e.g. free‐
wheeling diodes, varistors, RC elements).
NOTE
The response time increases depending on the selected suppressor!
bPower devices (e.g. motors) that represent a strong source of interference must be
locally isolated from the input and output current circuits for signal processing.
The cable routing of the safety circuits should be separated from the cables of the
power circuits by the greatest possible distance.
5.3 Failsafety
•If the device does not respond when the supply voltage is connected (e.g. Status/
Diag LED does not flash), the safety switch must be replaced.
•The supply voltage is reverse polarity protected. The 1 / In 2 and OSSD 1 / OSSD 2
contacts are short-circuit protected.
•A cross-circuit between OSSD 1 and OSSD 2 is detected by the safety switch. A
cross-circuit in the cable can be ruled out by protected cable routing.
•A short-circuit between OSSD 1 and OSSD 2 to 24 V DC is detected. A short-circuit
between OSSD 1 and OSSD 2 simultaneously to 24 V DC must be ruled out by pro‐
tected cable routing without fail.
ELECTRICAL INSTALLATION 5
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5.4 Connection
DANGER
De-energize the system!
The plant could inadvertently start while you are connecting the devices.
bMake sure that the entire plant is disconnected from the voltage supply during all
electrical installation work.
Only use a suitable voltage supply!
The sensor must be connected to a voltage supply of protection class 2 SELV/PELV
24 V DC, +10 %/–15 %.
Prevent the formation of a potential difference between the load and the protective
device!
bIf you connect the loads to the OSSDs or safety outputs that do not have reverse
polarity protection, you must connect the 0 V connections of these loads and
those of the corresponding protective device separately 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 connections of the loads and
those of the corresponding protective device.
OSSD 1 OSSD 2 OSSD 1 OSSD 2
NOTE
•The safety switch complies with the regulations for electromagnetic compatibility
(EMC) for the industrial sector (Radio Safety Class A). Radio interference cannot
be ruled out when used in residential areas.
•In order to minimize network influences on the device behavior, the external volt‐
age supply of the devices (SELV/PELV) must be able to bypass events, including a
power outage of 20 ms. Power supply units according to EN 60204-1 fulfill this
prerequisite. Suitable power supply units are available as accessories from SICK.
5.4.1 Device connection (M12, 8-pin or cable variant)
1
7
6
2
8
4
5
3
Figure 4: Device connection (M12, 8-pin)
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Table 2: Pin assignment (M12, 8-pin) and cable assignment (cable variant)
Pin Wire color 1) Designation Description
1 White Aux Application diagnostic output (not safe)
2 Brown 24 V DC Voltage supply 24 V DC
3 Green n. a. Not connected
4 Yellow In 2 Enable input for OSSD 22)
5 Gray OSSD 1 OSSD 1 output
6 Pink OSSD 2 Output OSSD 2
7 Blue 0 V Voltage supply 0 V DC
8 Red In 1 Enable input for OSSD 1 2)
1) Applies to the connecting cables recommended as accessories.
2) When using an individual safety switch or in a series connection with T-connector, apply 24 V DC on the
first safety switch.
5.4.2 Device connection (M12, 5-pin)
1
5
4
3
2
Figure 5: Device connection pin assignment (M12, 5-pin)
Table 3: Device connection pin assignment (M12, 5-pin)
Pin Wire color 1) Designation Description
1 Brown 24 V DC Voltage supply 24 V DC
2 White OSSD 1 OSSD 1 output
3 Blue 0 V Voltage supply 0 V DC
4 Black OSSD 2 Output OSSD 2
5 Gray Aux Application diagnostic output (not safe)
1) Applies to the connecting cables recommended as accessories.
5.4.3 Connecting an individual safety switch
DANGER
Use external device monitoring!
The safety switch does not feature external device monitoring. To reach SIL3/PL e, you
must therefore implement external device monitoring with the help of a suitable higher-
level safety evaluation.
The actually achieved performance level or safety integrity level depends on the exter‐
nal wiring, the wiring version, the selection of control switches and their arrangement
on the machine.
Evaluate both safety outputs!
Both safety outputs (OSSD 1 and OSSD 2) must be evaluated without fail in order to
guarantee safety.
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5.4.4 Series connection of several safety switches
Several safety switches with cable or an 8-pin M12 connector can be safely connected
in series. The number of safety switches in a safe series connection is nearly limitless.
This has an influence the response times of the system, however. We therefore recom‐
mend using no more than 30 safety switches in a safe series connection.
DANGER
Use external device monitoring!
The safety switch does not feature external device monitoring. To reach SIL3/PL e, you
must therefore implement external device monitoring with the help of a suitable higher-
level safety evaluation.
The actually achieved performance level or safety integrity level depends on the exter‐
nal wiring, the wiring version, the selection of control switches and their arrangement
on the machine.
Evaluate both safety outputs!
Both safety outputs (OSSD 1 and OSSD 2) must be evaluated without fail in order to
guarantee safety.
Prevent manipulation!
If using T-connectors, you must mount the connecting cables so that simple bridging of
the safety switch is not possible.
21 3 3 34 4 5
7
6
7
6
7
6
Figure 6: Safe series connection of several safety switches
1Safe evaluation unit
2Connecting cable with female connector, M12, 4-pin and flying leads (e.g. YF2A14-
xxxVB3XLEAX)
3T-connector STR-XXA
4Connection cable with male connector, M12, 4-pin and female connector, M12, 4-pin (e.g.
YF2A14-xxxVB3M2A14)
5End connector MLP1-XXT
6Connection cable with male connector, M12, 8-pin, and female connector, M12, 8-pin
(e.g. YF2A18- xxxUA5M2A18)
7TR4 Direct safety switch
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6 Commissioning
DANGER
Do not commission without a thorough check by qualified safety personnel!
bBefore you operate a plant protected by the safety switch for the first time, make
sure that it is first checked and released by qualified safety personnel. (see "On
safety", page 6)
DANGER
Make sure that the time for the safety requirement (closing the protective device
again) is longer than the risk time. (see "Data sheet", page 23)
6.1 Indication when switching on
The device performs a self-test after switching on. During this time, the Status/Diag
LED flashes Ö green (see table 5, page 20).
6.2 Teach-in (uniquely coded variants)
An actuator must be taught in before initial commissioning of the uniquely coded safety
switch. Only if a taught-in actuator is situated in the response range of the sensor does
it enables its outputs. Only the most recently taught-in actuator is valid.
The teach-in process can either be performed so that a new actuator can be taught in
or so the sensor is locked for additional teach-in processes.
6.2.1 Teaching in an actuator
Up to eight actuators can be taught in on uniquely coded safety switches. The number
of actuators which can still be taught in is displayed by repeated flashing of the Status/
Diag LED when switching on the device. see table 4, page 18).
How to teach in an actuator
1. Switch on the voltage supply for the sensor.
2. Bring the actuator into the response range of the sensor. The sensor then auto‐
matically begins teaching in.
NOTE
The actuator must not be removed from the response range during the teach-in
process for at least 2 minutes. Otherwise the ability of the sensor to teach in other
actuators will be deactivated.
Teach-in sequence
•Actuator in response range: The Status/Diag LED flashes Ö green (2 Hz).
•Verifying actuator: The Status/Diag LED flashes Ö green/red for 15 seconds
(1 Hz).
•Programming sensor: The Status/Diag LED flashes Ö green/red for 15 seconds
(2 Hz).
•Programming complete: The Status/Diag LED flashes Ö green (2 Hz) and shows
the number of possible remaining teach-in processes, followed by a break. This
signal is repeated for 15 seconds.
•Teach-in complete, sensor ready: The Status/Diag LED lights up O green.
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NOTE
•To teach in another actuator, bring it into the response range of the sensor. The
teach-in sequence is the same as for the first teach-in process.
•Any actuators which were taught in earlier are now no longer accepted and cannot
be taught in again.
•Universally coded actuators cannot be taught in.
•A maximum of eight actuators can be taught in on uniquely coded sensors. The
device is then automatically locked for additional teach-in processes. The inter‐
locking cannot be removed.
6.2.2 Teaching in and locking a uniquely coded sensor
How to teach in an actuator and lock the sensor for additional teach-in processes
1. Switch on the voltage supply for the sensor.
2. Bring the actuator into the response range of the sensor. The sensor then auto‐
matically begins teaching in.
3. Remove the actuator from the response range during step 4 of the teach-in
sequence (“Programming complete”) until the Status/Diag LED lights up O red.
4. Bring the actuator back to the response area. The Status/Diag LED flashes
Ö green again (1 Hz). The sensor is now locked and no other teach-in processes
are possible. With its flashing signal, the Status/Diag LED shows the number of
teach-in processes that would be possible for 15 seconds.
Teach-in sequence
•Actuator in response range: The Status/Diag LED flashes Ö green for 15 sec‐
onds (2 Hz).
•Verifying actuator: The Status/Diag LED flashes Ö green/red for 15 seconds
(1 Hz).
•Programming sensor: The Status/Diag LED flashes Ö green/red for 15 seconds
(2 Hz).
•Programming complete: The Status/Diag LED flashes Ö green (2 Hz) and shows
the number of possible remaining teach-in processes, followed by a break. This
signal is repeated for 15 seconds. If you remove the actuator from the response
range during these 15 seconds and then bring it back into the response range, the
sensor is locked for additional teach-in processes.
•Teach-in complete, sensor ready: The Status/Diag LED flashes O green.
NOTE
•The interlocking processes (removal and return of the actuator) must be com‐
pleted within the 15 seconds of step 4.
•The interlocking cannot be removed.
6.2.3 Fault indicators during teach-in
Table 4: Fault indicators during teach-in
Display of the Status/Diag
LED (4 Hz)
Meaning
Ö Green OSSD inputs invalid or not available
8 × Ö green No actuator taught-in (delivery state)
Ö 3 × red, 1 × green A universally coded actuator should be taught in. This is not
possible.
Ö 3 × red, 2 × green An actuator which was already taught in on this sensor should
be taught in again. This is not possible.
6 COMMISSIONING
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Display of the Status/Diag
LED (4 Hz)
Meaning
Ö 3 × red, 3 × green The actuator was moved out of sensing range (RFID signal inter‐
rupted).
Ö 3 × red, 4 × green Eight actuators have been taught in. No other teach-in process
is possible.
Ö 3 × red, 5 × green The device has been interlocked. No other teach-in process is
possible.
NOTE
The fault indicators are repeated until the device is reset.
bTo reset the device, interrupt the voltage supply to the device for at least 3 sec‐
onds.
6.3 Inspection instructions
6.3.1 Checks before initial commissioning
Check the protective device as described below and in accordance with the applicable
standards and regulations.
NOTE
The tests before initial commissioning described in the following are used to detect the
influence on the protection system by unusual ambient influences.
These checks must therefore always be performed.
bCheck the effectiveness of the protective device of the machine in all operating
modes in which the machine can be set.
bEnsure that all operators have been instructed by the qualified safety personnel
before they start working on a machine protected by a safety switch. Instruction is
the responsibility of the machine user.
The tests must be documented accordingly.
6.3.2 Regular inspection of the protective device by qualified safety personnel
bCheck the plant following the inspection intervals specified in the national rules
and regulations. If any changes are made to the machine or someone tampers
with the protective device after initial commissioning, this will ensure that any
such issues are detected.
bIf substantial alterations have been made to the machine or protective device, or if
safety switches have been changed or repaired, check the plant again.
6.3.3 Regular testing of the effectiveness of the protective device
Check if the safety switch is functioning correctly at regular intervals and after each
error. You can find possible time intervals in ISO 14119.
How to check the effectiveness of the mounted safety switch
bCheck whether the machine always switches off when a protective door is opened.
bCheck that the switch cables are operating properly.
bCheck the protective device for signs of misuse or manipulation.
bCheck the switch housing for damage.
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7 Fault diagnosis
This chapter describes how to identify and remedy faults in the safety switch.
7.1 Response to errors
DANGER
Cease operation if the cause of the malfunction has not been clearly identified!
bImmediately put the machine out of operation if you cannot clearly identify the
fault and if you cannot safely remedy the problem.
bDo not try to repair the safety switch.
bReplace defective devices before recommissioning the machine.
DANGER
Behavior if errors cannot be remedied
bIf errors occur which cannot be remedied (LED Ö red (0.5 Hz), see table 5,
page 20), check outputs OSSD 1 and OSSD 2 for short-circuit to 0 V, 24 V DC or
between one another and remedy this error immediately.
bCheck the cabling for damage, i.e. whether dual-channel functionality is still work‐
ing.
7.2 SICK Support
If you cannot remedy the fault with the help of the information provided in this chapter,
please contact your respective SICK subsidiary.
7.3 Fault indicators of the Status/Diag LED
This section explains what the fault indicators for the Status/Diag LED mean and how
to respond to them.
Description of the fault indicators during teach-in operation: see "Fault indicators during
teach-in", page 18
Table 5: Fault indicators of the Status/Diag LED
Display Possible cause Remedy
Ö Green Switch-on test
or
Signal to OSSD inputs In 1
and In 2 invalid or not avail‐
able
bWait until the device has completed
the switch-on test.
bCheck the voltage supply (24 V DC)
and OSSD inputs In 1 and In 2 (red
and yellow wires).
bWith cascaded safety switches, check
whether all actuators are located in
the response range of the respective
sensor.
O Red Actuator outside of
response range
bMove the actuator into the response
range.
Ö Red (0.5 Hz) Remediable error bCheck the OSSDs for short-circuit to
0 V, 24 V DC or between one another.
bInterrupt the voltage supply to the
device for at least 3 seconds to reset
the device.
Ö Red (2 Hz) Non-remediable error bReplace the device.
7 FAULT DIAGNOSIS
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