Sick STR1 User Manual
STR1
Draft 2016-10-19
Safety switch
O P E R A T I N G I N S T R U C T I O N S
Described product
Draft 2016-10-19
STR1
Manufacturer
SICK A
G
Erwin-Sick
-Str. 1
79183 Waldkirch
Germany
Legal information
This work is prot
ected 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 or
iginal document of SICK AG.
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Subject to change without notice
Contents
Draft 2016-10-19
CONTENTS
1 About this document........................................................................ 5
1.1 Function of this document....................................................................... 5
1.2 Scope......................................................................................................... 5
1.3 Target groups and structure of these operating instructions................ 5
1.4 Additional information.............................................................................. 5
1.5 Symbols and document conventions...................................................... 6
2 Safety information............................................................................ 8
2.1 General safety notes................................................................................. 8
2.2 Intended use............................................................................................. 8
2.3 Requirements for the qualification of personnel.................................... 8
3 Product description........................................................................... 10
3.1 Setup and function................................................................................... 10
3.2 Product characteristics............................................................................. 10
4 Project planning................................................................................ 12
4.1 Manufacturer of the machine.................................................................. 12
4.2 Operating entity of the machine.............................................................. 12
4.3 Design........................................................................................................ 13
4.4 Integration into the electrical control...................................................... 13
4.5 Thorough check concept.......................................................................... 17
5 Mounting............................................................................................. 18
5.1 Safety......................................................................................................... 18
5.2 Unpacking.................................................................................................. 18
5.3 Possible mounting types.......................................................................... 18
5.4 Mounting................................................................................................... 20
6 Electrical installation........................................................................ 22
6.1 Safety......................................................................................................... 22
6.2 Notes on cULus......................................................................................... 23
6.3 Device connection (flying leads).............................................................. 24
6.4 Device connection (M12, 5-pin).............................................................. 24
6.5 Device connection (M12, 8-pin).............................................................. 24
6.6 Connecting a cascade.............................................................................. 25
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7 Commissioning.................................................................................. 28
7.1 Safety......................................................................................................... 28
7.2 Switching on.............................................................................................. 28
7.3 Teach-in..................................................................................................... 28
7.4 Thorough check........................................................................................ 29
8 Troubleshooting................................................................................. 30
8.1 Safety......................................................................................................... 30
3
CONTENTS
Draft 2016-10-19
8.2 Diagnostic LEDs........................................................................................ 30
9 Maintenance...................................................................................... 33
9.1 Cleaning..................................................................................................... 33
9.2 Regular thorough check........................................................................... 33
10 Decommissioning............................................................................. 34
10.1 Protection of the environment................................................................. 34
10.2 Disposal..................................................................................................... 34
11 Technical data.................................................................................... 35
11.1 Technical data........................................................................................... 35
11.2 Dimensional drawings.............................................................................. 38
11.3 Response time and enable time in cascade.......................................... 39
12 Ordering information........................................................................ 40
12.1 Scope of delivery...................................................................................... 40
12.2 STR1 ordering information....................................................................... 40
13 Spare parts......................................................................................... 42
13.1 Actuator..................................................................................................... 42
13.2 Sensors..................................................................................................... 42
14 Accessories........................................................................................ 43
14.1 Connectivity............................................................................................... 43
15 Annex.................................................................................................. 45
15.1 Compliance with EU directives................................................................. 45
15.2 FCC and IC radio approval........................................................................ 46
16 List of figures..................................................................................... 47
17 List of tables....................................................................................... 48
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Subject to change without notice
1 About this document
Draft 2016-10-19
1.1 Function of this document
These operating instructions contain the information needed during the life cycle of the
safety switch.
ABOUT THIS DOCUMENT 1
They mus
t be made available to all people who work with the safety switch.
1.2 Scope
The operating instructions only apply to the STR1 safety switch with the following infor‐
mation on t
he product packaging: Oper
ating Instructions 8018074.
These operating instructions are included with SICK part number 8018074 (all availa‐
ble languages of this document).
1.3 Target groups and structure of these operating instructions
These operating instructions are intended for the following target groups: project devel‐
oper
s (planner
CE authorized representatives, compliance officers, people who test and approve the
application), operators, and maintenance personnel.
The structure of these operating instructions is based on the life cycle phases of the
safety switch: project planning, mounting, electrical installation, commissioning, opera‐
tion, and maintenance.
In many applications, the target groups consist of the manufacturer and the operating
entity of the machine in which the safety switch is integrated:
Area of responsibility Target group Special chapters of these operating instruc‐
Manufacturer Project developers
Operating entity Operators Troubleshooting, pag
s, developer
(planners, developers,
designer
Installers Mounting, pag
Electricians Electrical inst
Safety experts Project planning, page 12
Maintenance person‐
nel
s, designers), installers, electricians, safety experts (such as
1)
tions
Project planning, page 12
Technical data, page 35
s)
Accessories, page 43
Commissioning, page 28
echnical data, page 35
T
Maint
enance, page 33
Troubleshooting, page 30
Ordering information, page 40
e 18
allation, page 22
e 30
1.4 Additional information
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Subject to change without notice
1)
Chapters not listed here are intended for all target groups. All target groups must follow all of the safety
and warning instructions in all c
hapters of the operating instructions!
In other applications, the operating organization is also the manufacturer of the equip‐
ment with the corresponding allocation of t
he target groups.
www.sick.com
The following information is a
vailable on the Internet:
5
1 AB
Draft 2016-10-19
OUT THIS DOCUMENT
versions in other languag
•
data sheets and application examples
•
CAD data of drawings and dimensional drawings
•
certificates (e.g. EU declaration of conformity)
•
Guide for Safe Machinery (Six steps to a safe machine)
•
1.5 Symbols and document conventions
The following symbols and conventions are used in this document:
Safety notes and other notes
DANGER
Indicates a situation presenting imminent danger, whic
injuries if not prevented.
WARNING
Indicat
es a situation pr
injuries if not prevented.
CAUTION
Indicates a situation presenting possible danger, whic
injuries if not prevented.
esenting possible danger, whic
es
h will lead to death or serious
h may lead to death or serious
h may lead to moderate or minor
NOTICE
Indicates a situation presenting possible danger, whic
not prevented.
NOTE
Indicates useful tips and recommendations.
Instructions for action
The arrow denot
b
1. The sequence of instructions for action is numbered.
2. Follow the order in which the numbered instructions are given.
✓
The check mark denotes a result of an instruction for action.
LED symbols
These symbols indicate the status of an LED:
The LED is off.
The LED is flashing.
The LED is illuminated continuously.
Terminology
erous state
Dang
es instructions for action.
h may lead to property damage if
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A dang
erous state is a status of the machine or facility, where people may be injured.
Protective devices prevent this risk if the machine is operated within its intended use.
The figures in this document always show the dangerous state of the machine as move‐
ment of a machine part. In practice, there are different dangerous states, such as:
Subject to change without notice
Machine movements
Draft 2016-10-19
•
Electrical par
•
Visible and invisible beam
•
A combination of multiple hazards
•
ts
ABOUT THIS DOCUMENT 1
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Subject to change without notice
7
2 SAFETY INFORMATION
Draft 2016-10-19
2 Safety information
2.1 General safety notes
This chapter contains general safety information about the safety switch.
Further infor
chapters.
DANGER
Hazar
In the case of non-compliance, it is possible that the dangerous state of the machine
may not be stopped or not stopped in a timely manner.
b
b
Incorrect installation or manipulation can lead to severe injuries.
2.2 Intended use
The safety switch is a transponder safety switch that is switched in a non-contact man‐
ner by means of actuators, and is suitable f
•
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 AG; in addition, any responsibility and liability of SICK AG for
damage and secondary damage caused by this is excluded.
mation about specific product use situations can be found in the relevant
o lac
d due t
Read this document carefully and ensure that you have fully understood the con‐
tents before you work with the device.
Pay particular attention to all safety notes in this document.
Movable physical guards
f
ectiveness of the protective device
k of ef
or the following applications:
The safety switch is not suitable for certain ambient conditions, including:
Radioactivity (with the exception of natural radioactivity)
•
Vacuum or high pressure
•
High UV exposure
•
In the vicinity of low-frequency RFIDs
•
In the vicinity of magnetic fields
•
The following can impair the function of the safety switch:
Metal subsurfaces or metal in the immediate vicinity (see "Design", page 13)
•
Flying metal chips
•
2.3 Requirements for the qualification of personnel
The safety switch must be configured, mounted, connected, commissioned, and serv‐
iced by qualified safe
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.
ty personnel only.
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Subject to change without notice
SAFETY INFORMATION 2
Draft 2016-10-19
Mechanical mounting, electrical installation, and commissioning
For the task, a per
rience in the relevant field and is sufficiently familiar with the application of the protec‐
tive device on the machine to be able to assess whether it is in an operationally safe
state.
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.
son is considered qualified when he/she has the expertise and expe‐
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Subject to change without notice
9
3 PRODUCT DESCRIPTION
Draft 2016-10-19
3 Product description
3.1 Setup and function
The safety switch consists of two components:
Sensor
•
The sensor is mounted on the fixed part of the protective device.
Actuator (transponder)
•
The actuator is mount
When the protective device is closed, the actuator is guided to the sensor. When the
switch on distance is reached, the sensor detects the actuator code. If the sensor
detects a taught-in code (valid actuator), it sets safety outputs OSSD 1 and OSSD 2
(semiconductor outputs) to High and application diagnostic output Aux to Low.
When the protective device is opened, the actuator is removed from the response range
of the sensor. The sensor sets safety outputs OSSD 1 and OSSD 2 to Low and applica‐
tion diagnostic output Aux to High.
3.2 Product characteristics
ed on the moving part of the protective device.
3.2.1 Product variants
The safety switch is delivered in different variants. You will find an overview of impor‐
t
ant distinguishing features of t
Universally coded, unique coded, and permanently coded safety switches
•
Actuator design: “Standard”, “Flat”, or “Mini”
•
Cable with M12 plug connector (5-pin or 8-pin) or flying leads (3 m or 10 m)
•
Complete overview of all variants: see "STR1 ordering information", page 40.
Coding
Universally coded
•
All actuator
Unique coded
•
An actuator must be taught in dur
taught in one after the o
Previously taught-in actuators can no longer be used.
Permanently coded
•
An actuator mus
performed once. It is not possible t
3.2.2 Active sensor surfaces
The sensor has 3 active sensor surfaces:
Front: black sur
•
2 x sides: yellow surface with long black edge
•
he variants in the following.
s are accepted. No teach-in is required.
ing commissioning. Up to 8 actuators may be
ther. Only the most recently taught-in actuator is valid.
t be taught in during commissioning. Teach-in only needs to be
o teach in any further actuators.
face
3.2.3 Fault detection
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Faults that arise, including internal device faults, are detected no later than the next
r
equirement to close t
switch then switches to the safe state. If a fault is detected, the safety circuit is
switched off and the DIAG and STATE light emitting diodes display the fault (see
table 10).
he safety contacts (e.g., when the machine starts). The safety
Subject to change without notice
3.2.4 Cascading
Draft 2016-10-19
PRODUCT DESCRIPTION 3
In the case of cascading, up to 30 safety switches are connected in series.
F
or more information, see "Cascading",
page 25
3.2.5 State indicators
The STATE light emitting diode (red/green) and the DIAG light emitting diode (yellow)
signal t
Complete overview of the light emitting diode states and their meanings: see "Diagnos‐
tic LEDs", page 30.
3.2.6 Protective functions
The safety switch has the following internal protective functions:
•
•
•
•
page 16 and see "Connecting a cascade",
he operational state of the safety switch.
Short-circuit protection at all outputs
Cross-circuit monitoring at OSSDs
Overload protection at OSSDs
Reverse polarity protection for the supply voltage
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Subject to change without notice
11
4 PROJECT PLANNING
Draft 2016-10-19
4 Project planning
4.1 Manufacturer of the machine
DANGER
Failure to compl
Hazard due to lack of effectiveness of the protective device
Perform a risk assessment before using the safety switch.
b
Do not manipulate, open, or modify components of the safety switch.
b
Do not repair defective devices; replace them instead.
b
Make sure the switch-on commands that cause the machine to enter a dangerous
b
state only take effect when the protective device is closed.
Make sure a stop command is triggered when the protective device is opened in a
b
hazardous machine state.
Safety switches must not be bypassed (i.e., the contacts jumpered), swiveled out
b
of the way, removed, or rendered ineffective in any other way. If necessary, take
measures to reduce the possibility of bypassing.
If multiple devices are connected in series (cascaded) and the simplified procedure
according to ISO 13849 is used to det
drop.
y with manufacturer’s obligations
ermine the performance level (PL), the PL may
As the number of safety switches in a cascade increases, so too does the response
time.
4.2 Operating entity of the machine
DANGER
Failure to compl
Hazard due to lack of effectiveness of the protective device
Modifications to the machine and modifications to the mechanical mounting of
b
the safety switch necessitate a new risk assessment. The results of this risk
assessment may require the operating entity of the machine to fulfill the manufac‐
turer’s obligations.
Apart from during the procedures described in this document, the components of
b
the safety switch must not be opened or modified.
Do not perform repair work on the components. Improper repair of the safety
b
switch can lead to a loss of the protective function.
Make sure that bypassing is not carried out by substitute actuators. Restrict
b
access to actuators for unlocking.
y with operating entity’s obligations
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Subject to change without notice
4.3 Design
Draft 2016-10-19
PROJECT PLANNING 4
DANGER
Bypassing the protectiv
Hazard due to lack of effectiveness of the protective device
Prevent incentives to manipulate the safety switch by taking at least one of the fol‐
b
lowing measures:
Universally coded variant only:
Co
°
°
Mounting location
ver the sensor and the actuat
against access.
If possible, use non-detachable mounting methods for actuators (such as
welding, gluing, safety screws, or rivets).
e device
or with additional equipment or protect them
When the protectiv
b
other at the safe switch on distance of Sao or closer (see table 3).
Select a mounting location that allows the sensor and actuator to be accessed for
b
maintenance work and protects them against damage.
If possible, mount the sensor and actuator on non-ferrous subsurfaces and at a
b
distance from metallic parts in order to avoid affecting the sensing range. If this is
not possible, the effect on the safe switch on distance Sao and the safe switch off
distance Sar must be checked.
Make sure that there is no possibility of hazards arising when the protective device
b
is opened, even if the actuator has not yet reached the safe switch off distance
Sar.
If the actuator is approaching the sensor in a parallel position, observe the mini‐
b
mum distances (see table 3).
If necessary, attach an additional stop for the moving protective device.
b
Distance
If multiple saf
minimum distance in relation to one another; see "Mounting", page 20.
Alignment
The sensor can be mounted in any alignment see "Mounting", page 20, see "Possible
mounting types", page 18.
ety switches are mounted on the machine, they must be mounted with a
e device is closed, the sensor and actuator must face each
4.4 Integration into the electrical control
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Subject to change without notice
Actuating direction
The actuator may approach the front or the long side of the sensor.
NOTE
he actuat
If t
closed, but instead approaches it in a parallel position, the specified minimum distance
must be adhered to. This prevents the sensor from enabling the safety outputs despite
the protective device not being fully closed.
Switch-on commands that cause the machine to enter a dangerous state may only take
effect when the pro
ous state, a stop command must be triggered if the protective device opens. Depending
on the safety concept, the signal is analyzed by, e.g., safety relays or a safety controller.
or does no
t mo
e directly onto the sensor when the protective device is
v
tective device is closed. In cases where the machine is in a danger‐
13
4 PROJECT PLANNING
Draft 2016-10-19
4.4.1 OSSDs
Safety switches with local inputs and outputs can be directly integrated into the
mac
hine controller.
DANGER
Hazard due to lack of effectiveness of the protective device
In the case of non-compliance, it is possible that the dangerous state of the machine
may not be stopped or not stopped in a timely manner.
Make sure that the following control and electrical requirements are met so the
b
protective function can be fulfilled.
The output signals from an OSSD pair must not be connected to each other.
•
In the machine controller, both signals from an OSSD pair must be processed sep‐
•
arately.
Figure 1: Dual-channel and isolated connection of OSSD 1 and OSSD 2
The machine must switch to t
•
OSSD pair switches to the OFF state.
Prevent the formation of a potential difference between the load and the protec‐
•
tive device. If you connect loads to the OSSDs (safety outputs) that then also
switch if controlled with negative voltage (e.g., electro-mechanical contactor with‐
out reverse polarity protection diode), you must connect the 0 V connections of
these loads and those of the corresponding protective device individually 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.
he safe state at any time if at least one OSSD in an
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Figure 2: No potential difference between load and protective device
Subject to change without notice
PROJECT PLANNING 4
Draft 2016-10-19
DANGER
Hazard due to lack of eff
In the case of non-compliance, it is possible that the dangerous state of the machine
may not be stopped or not stopped in a timely manner.
Downstream contactors must be positively guided and monitored depending on appli‐
cable national regulations or required reliability of the safety function.
Make sure that downstream contactors are monitored (external device monitoring,
b
EDM).
Requirements for the electrical control of the machine
ectiveness of the protective device
he contr
Use t
•
The safety switch tests the OSSDs at regular intervals. To do this, it switches each
•
OSSD briefly (for max. 1 ms) to the OFF state and checks whether this channel is
voltage-free during this time.
Make sure that the machine’s control does not react to these test pulses and the
machine does not switch off.
The in
•
The OSSDs are short-circuit protected to 24 V DC and 0 V. When the actuator is in the
sensor’s response range, the OSSDs signal the ON state with the HIGH signal level
(non-isolated). If the actuator is removed from the sensor’s response range or there is a
device fault, the OSSDs signal the OFF state with the LOW signal level.
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.
DANGER
Hazar
In the case of non-compliance, it is possible that the dangerous state of the machine
may not be stopped or not stopped in a timely manner.
b
puts of a connect
two outputs of the safety switch send a level of the supply voltage in the switchedon state.
o lac
d due t
Make sure that the following control and electrical requirements are met so the
safety switch can fulfill its protective function.
hout t
ol wit
f
ectiveness of the protective device
k of ef
t pulses. The safety switch is self-testing.
es
ed evaluation unit mus
t be positive-switching (PNP), as the
4.4.2 Application diagnostic output
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Subject to change without notice
The exter
•
power failures of 20 ms as specified in IEC 60204-1.
The power supply unit must provide safe isolation according to IEC 61140 (SELV/
•
PELV). Suitable power supply units are available as accessories from SICK.
The application diagnostic output signal changes as soon as the actuator is moved into
or leaves the response r
moving protective device is opened and closed. This is not a safety output.
Actuator Application diagnostic output
Actuator not in response range. ON
Actuator in response range. OFF
Table 1: Application diagnostic output switching behavior
nal v
olt
age supply of the safety switch must be capable of buffering brief
ange of the safety switch. In other words, it does so when the
15
1 1 1 1 1 2
OSSD1
OSSD2
OSSD1
OSSD2
OSSD1
OSSD2
OSSD1
OSSD2
OSSD1
OSSD2
4 PROJECT PLANNING
Draft 2016-10-19
4.4.3 Cascading
Cascading makes it possible to connect multiple safety switches. The connected devi‐
ces act lik
e a single device. Cascading is only possible wit
h the variant that includes the
8-pin M12 male connector.
Figure 3: Circuit with 5 cascaded safety switches
Safety switch
Safe evaluation unit
It is not possible to use more than 30 safety switches in a cascade.
The maximum number of safety switches depends on the f
Applied supply voltage
•
Length of cables used
•
Cross-section of cables used
•
ollowing factors:
The voltage drop in the cascade must be checked to ensure that the defined minimum
voltage is still present at the last safety switch.
In the case of connection cables with a length of 2 m and a cable cross-section of
0.25 mm², the maximum number of cascadable safety switches is relative to the volt‐
age, as explained below:
Voltage Connection cables,
the same kind for the
entire cascade
24 V Length: 2 m
26.8 V 19.2 V 30
Table 2: Maximum number of cascadable safety switches relative to the voltage
Cable cross-section:
0.25 mm²
In
put voltage at 30th
safety switch
17.8 V 24
Maximum number of
cascadable safety
switches
The number of safety switches in a cascade affects the response time of the system
(see "Response time and enable time in cascade", page 39).
The cascade can be created using special T-pieces and an end connector (see "Con‐
necting a cascade", page 25).
NOTE
he case of safety switc
In t
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ate the application diagnostic output.
hes cascaded using T
-connectors, it is not possible to evalu‐
Subject to change without notice
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