SRO 021
S-DIAS Safety
Relay Output Module
Date of creation: 18.12.2013
Version date: 02.12.2019
Article number: 20-893-021-E
Publisher: SIGMATEK GmbH & Co KG
A-5112 Lamprechtshausen
Tel.: +43/6274/4321
Fax: +43/6274/4321-18
Email: office@sigmatek.at
WWW.SIGMATEK-AUTOMATION.COM
Copyright © 2013
SIGMATEK GmbH & Co KG
Translation from German
All rights reserved. No part of this work may be reproduced, edited using an electronic system, duplicated or
distributed in any form (print, photocopy, microfilm or in any other process) without the express permission.
We reserve the right to make changes in the content without notice. The SIGMATEK GmbH & Co KG is not
responsible for technical or printing errors in the handbook and assumes no responsibility for damages that occur
through use of this handbook.
S-DIAS SAFETY RELAY OUTPUT MODULE SRO 021
02.12.2019 Page 1
S-DIAS Safety Relay Output Module SRO 021
The S-DIAS Safety SRO 021 relay output module has the safety
integrity level SIL3 or SIL CL 3 (EN / IEC 62061) or
Performancelevel e (PL e) (EN ISO 13849-1/-2). The SRO 021
has:
• 2 Safe outputs (EN 61131-2; EN/IEC 62061 und EN ISO
13849-1/-2)
The safe outputs are used for the safety-oriented output of two
actuator signals to, for example, control relays, valves, etc.
The safety-related SRO 021 is ideal for use in systems with
optional modules and interface variables according to Safety
System Handbook, see homepage1.
To use the SRO 021 in an application, at least one Safety CPU
module that regulates the synchronized communication with the
safety modules using safe bus telegrams is also required. This also
includes
• processing the safe application and
• the distribution of configuration data to remote Safety
modules
1
Using the search function with the keyword “Safety System Handbook”
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Contents
1 Basic Safety Guidelines ......................................................... 4
1.1 General Information on Safety .................................................... 4
1.2 Further Safety Guidelines ............................................................ 5
1.3 General Requirements ................................................................. 6
2 Conformity with EU Guidelines ............................................10
2.1 Functional Safety Standards ..................................................... 10
2.2 EU Conformity Declaration ........................................................ 10
2.3 Safety-Relevant Parameters ...................................................... 11
2.4 Compatibility ............................................................................... 11
3 Technical Data .......................................................................12
3.1 Relay Output Specifications ...................................................... 12
3.2 Lifespan of the Relay Output Module depending on the
Number of Switching Cycles Per Year ..................................... 14
3.3 Relay Circuit ................................................................................ 15
3.4 Electrical Requirements ............................................................. 15
3.5 Miscellaneous ............................................................................. 17
3.6 Environmental Conditions ......................................................... 17
4 Mechanical Dimensions ........................................................18
5 Connector Layout ..................................................................19
5.1 Status LEDs ................................................................................. 20
5.2 Applicable Connectors ............................................................... 20
S-DIAS SAFETY RELAY OUTPUT MODULE SRO 021
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5.3 Label Field ................................................................................... 21
6 Wiring ..................................................................................... 22
6.1 Wiring Example ........................................................................... 22
6.2 Note .............................................................................................. 23
7 Mounting ................................................................................ 24
8 Supported Cycle Times ........................................................ 26
8.1 Cycle Times below 1 ms (in µs) ................................................. 26
8.2 Cycle Times equal to or higher than 1 ms (in ms) ................... 26
9 Disposal ................................................................................. 26
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1 Basic Safety Guidelines
1.1 General Information on Safety
If the safety guidelines are not followed, dangers to personnel can arise that could lead to
serious injury or in worst cases, death. In less serious cases, systems and equipment can
be damaged.
The following symbols identify the individual risks as well as the degree of seriousness;
their respective meanings are briefly explained. You should therefore familiarize yourself
with the safety symbols and their meanings to prevent dangers and risks.
DANGER!
DANGER!
Identifies an immediate danger with high risk, which
can lead to immediate death or serious injury if not
avoided.
Indique un danger direct à haut risque d’un décès
immédiat ou des blessures graves si les consignes de
sécurité ne sont pas respectées.
WARNING
WARNING
Identifies a possible danger with a mid-level risk,
which can lead to death or (serious) injury if not
avoided.
Indique un danger possible d’un risque moyen de
décès ou de (graves) blessures si les consignes de
sécurité ne sont pas respectées.
CAUTION!
CAUTION!
Identifies a low risk danger, which can lead to injury or
property damage if not avoided.
Indique un danger avec un niveau de risque faible des
blessures légères ou des dommages matériels si les
consignes de sécurité ne sont pas respectées.
S-DIAS SAFETY RELAY OUTPUT MODULE SRO 021
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1.2 Further Safety Guidelines
Warning, dangerous electrical voltage
Avertissement d’une tension électrique dangereuse
Hot surface warning
Avertissement d’une surface chaude
Danger for ESD-sensitive components
Les signes de danger pour les composants sensibles
aux décharges électrostatiques
This symbol identifies important or additional
information regarding the operation of the safety
modules.
Ce symbole indique des informations importantes ou
supplémentaires concernant le fonctionnement des
modules de sécurité particuliers.
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1.3 General Requirements
Technical
Documentation
This technical documentation is a component of this product.
• this document must be accessible in the vicinity of the
machine, since it contains important instructions.
• the technical documentation should be included in the
sale, rental or transfer of the product.
Documentation
technique
Cette documentation technique fait partie intégrale du produit.
• Gardez la toujours à portée de main et à la proximité
de la machine, car elle contient des informations
importantes.
• Distribuez la documentation technique aux secteurs de
la vente et/ou de la location du produit.
Acceptance of the
Safety Guidelines
Before handling the product belonging to this documentation,
the operating instructions and safety guidelines must be read.
SIGMATEK GmbH & Co KG accepts no liability for damages
resulting from non-compliance with the safety guidelines or the
relevant regulations.
Acceptance or the safety guidelines and the explanations in this
document, as well as the Safety System handbook are a basic
requirement for proper use. Therefore, read this operating
manual thoroughly and familiarize yourself with each of them.
More information on standards and regulations etc. can be
found in the system handbook.
Prendre connaissance
de consignes de
sécurité
Avant toute manipulation on doit impérativement prendre
connaissance de consignes de sécurité et du mode d’emploi.
SIGMATEK GmbH & Co KG n'assume aucune responsabilité
pour les dommages causés par le non-respect des consignes
de sécurité ou du mode d’emploi respectif.
La connaissance de consignes de sécurité et le contenu de
cette documentation ainsi que le mode d’emploi du système de
sécurité constitue une condition préalable à l'utilisation prévue.
Lisez ce mode d’emploi et assurez-vous de le comprendre
jusqu’aux détails.
Pour plus d'informations sur les normes et les lignes directrices,
etc., reportez-vous au mode d’emploi.
S-DIAS SAFETY RELAY OUTPUT MODULE SRO 021
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Qualified Personnel
Installation, assembly, programming and initial start-up,
operation, maintenance and decommissioning of control and
automation technology products in general, as well as safetyrelated products especially, can only be performed by qualified
personnel.
Qualified personnel in this context are people, who have
completed training or have trained under supervision of
qualified personnel and have been authorized to operate and
maintain safety-related equipment, systems and facilities in
compliance with the strict guidelines and standards of safety
technology.
Personnel qualifié
Installation, montage, programmation, mise en service,
l'exploitation, l'entretien et mise hors service de produits de
commande et d'automatisation en général, et de produits liés à
la sécurité, en particulier, ne peut être effectuée que par le
personnel qualifié.
On entend sous terme personnel qualifié les personnes ayant
acquis une formation professionnelle dispensé par un
spécialiste sur l’utilisation et surveillance des composants et
des systèmes de sécurité, ceci conformément aux lignes
directrices et les normes en vigueur.
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Designated Use
The Safety modules are designed for use in safety-oriented
applications and meet the required conditions for safety
operation in compliance with Performance level e (PL e), in
accordance with EN ISO 13849-1/-2 and SIL3 or SIL CL 3 in
accordance with EN 62061.
For your own safety and the safety of others, use safety
modules for their designated purpose. Correct EMC installation
as well as proper transport and storage are also included in
designated use.
Non-designated use consists of
• any change made to the safety modules of any kind.
• the use of damaged safety modules.
• the use of the safety module outside of the instructions
described in this handbook.
• the use of the safety module outside of the technical
data described in this handbook.
Utilisation prévue
Les modules de sécurité sont conçus pour une utilisation dans
les applications sollicitant un niveau de sécurité et répondent à
toutes les conditions nécessaires pour un fonctionnement sûr
conformément au niveau de performance e (PL e) selon la
norme EN ISO 13849-1/-2 et SIL3 ou SIL CL 3 de la norme EN
62061.
Utilisez le module de sécurité conformément à son mode
d’emploi pour votre propre sécurité et celle d'autres personnes.
L'utilisation conforme comprend également une installation
conforme CEM ainsi que le transport et le stockage conforme.
L'utilisation abusive comprend entre autres:
• les modifications quelconques apportées aux modules
de sécurité.
• utilisation de modules de sécurité endommagés.
• utilisation de modules de sécurité en dehors du cadre
décrit dans ce mode d’emploi.
• utilisation de modules de sécurité en dehors des
spécifications décrites dans ce mode d’emploi.
S-DIAS SAFETY RELAY OUTPUT MODULE SRO 021
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Operator Due Diligence
The operator must ensure that
• the Safety modules are to be used for their designated
purpose only.
• the Safety modules are to be operated in error-free,
fully functional condition only.
• only sufficiently qualified and authorized personnel my
operated the Safety modules.
• the documentation is complete and in readable
condition and available at the site of operation.
Obligation de diligence
L’utilisateur doit s'assurer que
• les modules de sécurité ne sont utilisés que selon les
spécifications.
• uniquement les modules de sécurité en parfait état de
fonctionnement peuvent être utilisés.
• seulement le personnel qualifié et autorisé puisse
manipuler les modules de sécurité.
• la documentation dans son intégralité et dans un état
lisible est mise à disposition à l’endroit où les modules
de sécurité sont utilisés.
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2 Conformity with EU Guidelines
2.1 Functional Safety Standards
- EN / IEC 62061:2005/A2:2015
- EN ISO 13849-1:2015
- EN ISO 13849-2:2012
2.2 EU Conformity Declaration
CE Declaration of Conformity
The SRO 021 complies with the following European directives:
• 2006/42/EG “Directive of the European Parliament and of the
Council of 17 May 2006 on Machinery and Change to the Directive
95/16/EC” (machine guideline)
• 2014/30/EU “Electromagnetic Compatibility” (EMC guideline)
• 2011/65/EU Restricted use of certain hazardous substances in
electrical and electronic equipment (RoHS Guideline)
The EU Conformity Declarations are provided on the SIGMATEK website.
Using the search function with the keyword “EU Declaration of Conformity”.
S-DIAS SAFETY RELAY OUTPUT MODULE SRO 021
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2.3 Safety-Relevant Parameters
Relay Module
Safety Parameters
Safety Levels
SRO 021 including CPU module
SCP 011/SCP 111
PFHD = 9.78E-09 (1/h)
MTTFD = 240 years
DC = 98.99 %
SFF = 99.49 %
PL e / Cat. 4
SIL 3 resp. SILCL 3
The above failure probability (PFHD, MTTFD and SFF)) is based on the assumption that the
output relay is operated with 25,000 switching cycles per year (nop). If more switching
cycles per year are required, you can request the safety parameters from SIGMATEK via
the support.
Time of use of the relay output module depending on the
number of switching cycles per year, see chapter 3.2.
2.4 Compatibility
Compatibility
For compatibility of the S-DIAS Safety modules, see section
"Compatibility of S-DIAS Safety Modules" in the system
handbook.
SRO 021 S-DIAS SAFETY RELAY OUTPUT MODULE
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3 Technical Data
3.1 Relay Output Specifications
Number
2
Configuration
two-channel
Voltage range
maximum +30 V
Contact current
maximum 6 A
Miscellaneous
no protective circuit
This module exceeds the defined current consumption for S-DIAS Safety modules,
therefore it should be considered as two S-DIAS Safety modules.
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Attention!
The module SRO 021 is only designed for a maximum voltage range of +30 V.
SRO 021 S-DIAS SAFETY RELAY OUTPUT MODULE
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3.2 Lifespan of the Relay Output Module depending on the Number of Switching Cycles Per Year
0 2 10
5
4 105 6 105 8 105
0
5
10
15
20
Schaltspiele pro Jahr
Verwendungszeit in Jahren
15.6
B
10D
nop
50000
nop
Duration of relay output module use 20a
B
10D
-value of the relay used 780000 switching cycles under rated load
Example calculation: With 50000 switching cycles per year, the relay output module must
be exchanged after 15.6 years (=);
with 39000 switching cycles per year, the lifespan is 20 years.
B
10D
50000
15.6=
Operating Time in Years
Switching Cycles per Year
S-DIAS SAFETY RELAY OUTPUT MODULE SRO 021
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3.3 Relay Circuit
The outputs are internally wired as a series circuit of to two relays.
3.4 Electrical Requirements
Voltage supply from Safety bus
+12 V
Current consumption on Safety
bus (+12 V supply)
typically 30 mA
maximum 40 mA
Voltage supply from Safety bus
+24 V
Current consumption on Safety
bus (+24 V supply)
typically 90 mA
maximum 100 mA
If this S-DIAS Safety module is connected to an SCP with several modules, the total
current of the S-DIAS Safety modules used must be determined and checked.
The total current of the +24 V supply cannot exceed 800 mA.
The total current of the +12 V supply cannot exceed 800 mA.
Si ce module S-DIAS Safety est connecté à un SCP avec plusieurs modules S-DIAS,
le courant total des modules utilisés doit être défini et contrôlé.
Le courant total de l'alimentation +24 V ne peut pas dépasser 800 mA!
Le courant total de l'alimentation +12 V ne peut pas dépasser 800 mA!
The S-DIAS Safety CPU Module supports a maximum of 16 safe I/O modules.
The S-DIAS Safety Relay Module SRO 021 corresponds to two safe I/O modules.
L'automate de sécurité CPU S-DIAS prend en charge 16 E / S de sécurité au
maximum. Le S-DIAS module relais de sécurité SRO 021 correspond à deux modules
simples E / S de sécurité.
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S-DIAS SAFETY RELAY OUTPUT MODULE SRO 021
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3.5 Miscellaneous
Article number
20-893-021
Hardware version
1.00 / 2.00 / 3.xx
Standard
EN 62061 SIL 3 resp. SIL CL 3
EN ISO 13849-1 PL e/Cat. 4
UL 508 (E247993)
Approbations
CE, TÜV EC type-examination tested, CULUS
3.6 Environmental Conditions
Storage temperature
-20 ... +85 °C
Environmental temperature
0 ... +55 °C
Humidity
0-95 %, non-condensing
Installation altitude above sea
level
0-2000 m without derating
> 2000 m with derating of the maximum environmental temperature by 0.5
°C per 100 m
Operating conditions
Pollution degree 2
EMC resistance
in accordance with 61000-6-7:2015 (Generic standards - Immunity
requirements for equipment intended to perform functions in safety-related
systems (functional safety) at industrial locations)
in accordance with EN 61000-6-2:2007 (industrial area)
(increased requirements in accordance with IEC 62061)
EMC noise generation
in accordance with EN 61000-6-4:2007 (industrial area)
Vibration resistance
EN 60068-2-6
3.5 mm from 5-8.4 Hz
1 g from 8.4-150 Hz
Shock resistance
EN 60068-2-27
15 g
Protection type
EN 60529
IP20
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4 Mechanical Dimensions
S-DIAS SAFETY RELAY OUTPUT MODULE SRO 021
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5 Connector Layout
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5.1 Status LEDs
Bus Status
green
ON
bus communication OK
OFF
no supply available
BLINKING (5 Hz)
no communication
Safety-Used
yellow
ON
module is used and no error
OFF
module is not used or not in operational mode
Output Status
yellow
ON
output ON
OFF
output ON
5.2 Applicable Connectors
Connectors:
X1, X2: Connectors with spring terminals (included in delivery)
The spring terminals are suitable connecting ultrasonically compacted (ultrasonically
welded) strands.
Connections:
Stripping length/Sleeve length:
10 mm
Plug-in direction:
parallel to conductor axis or to PCB
Conductor cross section, rigid:
0.2-1.5 mm2
Conductor cross section, flexible:
0.2-1.5 mm2
Conductor cross section, ultrasonically compacted:
0.2-1.5 mm2
Conductor cross section AWG/kcmil:
24-16
Conductor cross section flexible, with ferrule without plastic
sleeve:
0.25-1.5 mm2
Conductor cross section flexible, with ferrule with plastic sleeve:
0.25-0.75 mm2 (ground for reducing d2 of the
ferrule)
S-DIAS SAFETY RELAY OUTPUT MODULE SRO 021
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5.3 Label Field
Manufacturer
Weidmüller
Type
MF 10/5 CABUR MC NE WS
Weidmüller article number
1854510000
Compatible printer
Weidmüller
Type
Printjet Advanced 230V
Weidmüller article number
1324380000
SRO 021 S-DIAS SAFETY RELAY OUTPUT MODULE
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6 Wiring
6.1 Wiring Example
S-DIAS SAFETY RELAY OUTPUT MODULE SRO 021
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6.2 Note
The input filters, which suppress noise signals, allow operation in harsh environmental
conditions. A careful wiring method is also recommended to ensure error-free function.
The following installation guidelines should be observed:
• Avoid parallel connections between input lines and load-bearing circuits.
• Protective circuits for all relays (RC networks or free-wheeling diodes)
• Correct wiring to ground
The ground bus should be connected to the control cabinet when possible!
Si possible la terre doit être connectée à l'armoire de commande!
The wiring and assembly must be performed when no voltage is applied!
Le câblage et l'installation ne doivent être effectués que sur un système hors
tension !
IMPORTANT:
The S-DIAS module CANNOT be connected or disconnected while voltage is applied!
IMPORTANT:
Le module S-Dias NE PEUT PAS être inséré ou retiré sous tension.
SRO 021 S-DIAS SAFETY RELAY OUTPUT MODULE
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7 Mounting
The S-DIAS modules are designed for installation into the control cabinet. To mount the
modules a DIN-rail is required. The DIN rail must establish a conductive connection with the
back wall of the control cabinet. The individual S-DIAS modules are mounted on the DIN rail
as a block and secured with latches. The modules must be mounted horizontally (module
label up) with sufficient clearance between the ventilation slots of the S-DIAS module blocks
and nearby components and/or the control cabinet wall. This is necessary for optimal
cooling and air circulation, so that proper function up to the maximum operating
temperature is ensured.
S-DIAS SAFETY RELAY OUTPUT MODULE SRO 021
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Recommended minimum distances of the S-DIAS modules to the surrounding components
or control cabinet wall:
a, b, c … distances in mm (inches)
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8 Supported Cycle Times
The SRO 021 supports different cycle times. If variable sample points are deactivated, the
IOs are updated with 4 kHz at cycle times of 250 µs to 32 ms. If the cycle time is lower than
250 µs, the IOs are updated with 3 kHz and PDO data are transmitted in a millisecond
cycle.
8.1 Cycle Times below 1 ms (in µs)
50
100
125
200
250
500
x x x x x
x
8.2 Cycle Times equal to or higher than 1 ms (in ms)
1 2 3 4 5 6 7 8 9
10
11
12
13
14
15
16
x x x x x x x x x x x x x x x
x
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
x x x x x x x x x x x x x x x
x
9 Disposal
For the disposal of the product, the respective guidelines, possibly country-specific, must be
observed and followed.
S-DIAS SAFETY RELAY OUTPUT MODULE SRO 021
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Documentation Changes
Change date
Affected
page(s)
Chapter
Note
11.02.2014
14
15
5 Connector Layout
5.2 Applicable Connectors
Changed image
Connection capacity added
French notes added
03.03.2014
16
17
5 Connector Layout
5.1 Status LEDs
Changed image
Changed/expanded Status LEDs table
01.04.2014
20
7 Mounting
Text updated
20.05.2014
13
3.4 Electrical Requirements
Note added
23.05.2014
10
2.3 Compatibility
Added chapter
08.09.2014
14
3.5 Miscellaneous
Added Standard
13.01.2015
13
3.4 Electrical Requirements
Changed 2nd notice
30.01.2015
19
6.2 Note
Added note concerning connecting the S-DIAS
module while voltage is applied
26.03.2015
17
5.2 Applicable Connectors
Added connections
07.05.2015
New writing: EN ISO 13849-1/-2
18.05.2015
14
3.6 Environmental Conditions
Expanded vibration resistance
27.05.2015
new cover, pictures changed
01.07.2015
12
3.1 Relay Output
Specifications
Added new data sheet
04.08.2015
Info Cover Translation from German added
09.03.2016
15
3.4 Electrical Requirements
Graphics
28.04.2016
23
7 Mounting
Graphics distances
28.06.2017
12
3.1 Relay Output
Specification
Note added
17.08.2017
16
19
3.6 Environmental Conditions
5.2 Applicable Connectors
Pollution Degree
Sleeve length added
Added info regarding ultrasonically welded strands
18.10.2017
20
24
5.3 Label Field
7 Mounting
Added chapter
Graphic replaced
SRO 021 S-DIAS SAFETY RELAY OUTPUT MODULE
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16.11.2017
10
2 Conformity with EU
Guidelines
SCP 111 values added
02.04.2019
10
17
alle
2.3 Sicherheitsrelevante
Kenngrößen
3.6 Umgebungsbedingungen
Korrektur der Sicherheitskennwerte
Korrekturen Umgebungsbedingungen
Korrekturen aufgrund CE
14.11.2019
8 Supported Cycle Times
Chapter added
02.12.2019
2.3 Safety-Relevant
Parameters
Values updated
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