SIGMA TEK SSI 021 User manual

SSI 021
S-DIAS Safety
SSI Absolute Value Encoder
Operating Manual
Date of creation: 25.02.2014
Version date: 25.04.2022
Article number: 20-894-021-E

Publisher: SIGMATEK GmbH & Co KG
A-5112 Lamprechtshausen
Tel.: [phone]
Fax: [phone]
Email: [email protected]
WWW.SIGMATEK-AUTOMATION.COM
Copyright © 2014
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.

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S-DIAS Safety SSI Absolute Value Encoder SSI 021
The S-DIAS Safety SSI absolute value encoder module SSI 021 provides
the values of two absolute value encoders, the Safety CPU as well as the
non-Safe CPU (standard PLC). Since hardware version 2.0 rotary encoders
are supported.
The 2-channel Safety function is implemented by processing the position
values in the so-called Safety core (two micro controllers with cross
communication).
The connection to the Safety CPU (SCP 011 / SCP 111) is made via the
internal Safety but, which is completely independent of the S-DIAS bus.
The components supply the Safety CPU values, such as position, speed
and absolute value limit violation. For a detailed listing of the function and
settable parameters, see the module description in the SafetyDesigner.
The SSI 021 parameters are set via the program in the default PLC (bit
length of the SSI signal, SSI frequency, ...) and therewith, participants in
the S-DIAS bus of the standard PLC as well as on the internal Safety bus
of the Safety CPU. Stand-alone mode with a Safety CPU (without standard
PLC) is therefore not possible.
The safety-related component of the module meets the requirements for SIL3 in accordance
with EN / IEC 62061 and PL e, cat. 4 in accordance with EN ISO 13849-1/-2 (with two-channel
use).

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Contents
1Basic Safety Guidelines......................................................... 4
1.1 General Information on Safety ....................................................4
1.2 Further Safety Guidelines............................................................5
1.3 General Requirements .................................................................6
2Safety Conformity................................................................... 9
2.1 Functional Safety Standards.......................................................9
2.2 EU Conformity Declaration..........................................................9
2.3 Safety-Relevant Parameters......................................................10
2.3.1 Mounting Position Horizontal 0-55 °C Ambient Temperature ............10
2.3.2 Mounting Position Horizontal 0-60 °C Ambient Temperature ............10
2.4 Compatibility...............................................................................11
3Technical Data .......................................................................12
3.1 SSI Encoder Specifications.......................................................12
3.2 Electrical Requirements.............................................................13
3.3 Miscellaneous .............................................................................16
3.4 Environmental Conditions.........................................................16
4Mechanical Dimensions........................................................17
5Connector Layout..................................................................18
5.1 Status LEDs.................................................................................19
5.2 Applicable Connectors...............................................................19
5.3 Label Field...................................................................................20

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6Wiring.....................................................................................21
6.1 Wiring Example...........................................................................21
6.2 Note..............................................................................................22
7RS422 Interface .....................................................................22
8Mounting................................................................................23
9Disposal .................................................................................25
10 Hardware Class SSI021.........................................................26
10.1 Interfaces.....................................................................................27
10.1.1 Clients............................................................................................... 27
10.1.2 Servers ............................................................................................. 28
10.1.3 Communication Interfaces ................................................................ 29
10.2 Beispiel........................................................................................29

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1 Basic Safety Guidelines
1.1 General Information on Safety
If the safety guidelines are not followed, danger 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
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.
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.

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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 (see
homepage1) 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.
1
Using the search function with the keyword “Safety System Handbook”

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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
Qualified Personnel
Installation, assembly, programming and initial start-up,
operation, maintenance and decommissioning of control and
automation technology products in general, as well as safety-
related 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 Performancelevel e (PL e), in
accordance with EN ISO 13849-1/-2 and SIL3 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.
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.

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2 Safety Conformity
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
EU Declaration of Conformity
The SSI 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”.

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2.3 Safety-Relevant Parameters
2.3.1 Mounting Position Horizontal 0-55 °C Ambient Temperature
Input Module
Safety Parameters
Safety Levels
SSI 021 including CPU module
SCP 011/SCP 111
1-channel application:
PFHD = 2.4E-8 (1/h)
MTTFD = 660 years
DC = 85 %
SFF = 95 %
1-channel application:
PL d(1) / Cat. 2
SIL 2
2-channel application:
PFHD = 2.7E-09 (1/h)
MTTFD = 677 years
DC = 99 %
SFF = 99 %
2-channel application:
PL e / Cat. 4
SIL 3
(1) According to Table 5 and the corresponding notes EN / ISO 13849 in the "medium"
range. In combination with the high MTTFDvalue and the good PFHDvalue, DC is the
performance level PLd according to table K.1.
2.3.2 Mounting Position Horizontal 0-60 °C Ambient Temperature
Input Module
Safety Parameters
Safety Levels
SSI 021 including CPU module
SCP 011/SCP 111
1-channel application:
PFHD = 3.0E-8 (1/h)
MTTFD = 566 years
DC = 84 %
SFF = 95 %
1-channel application:
PL d(1) / Cat. 2
SIL 2
2-channel application:
PFHD = 3.2E-09 (1/h)
MTTFD = 579 years
DC = 99 %
SFF = 99 %
2-channel application:
PL e / Cat. 4
SIL 3

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Input Module
Safety Parameters
Safety Levels
SSI 021 including CPU module
SCP 211/SCP 111-S
1-channel application:
PFHD = 3.0E-8 (1/h)
MTTFD = 477 years
DC = 87 %
SFF = 96 %
1-channel application:
PL d(1) / Cat. 2
SIL 2
2-channel application:
PFHD = 2.7E-09 (1/h)
MTTFD = 677 years
DC = 99 %
SFF = 99 %
2-channel application:
PL e / Cat. 4
SIL 3
(1) According to Table 5 and the corresponding notes EN / ISO 13849 in the "medium" range.
In combination with the high MTTFDvalue and the good PFHDvalue, DC is the performance
level PLd according to table K.1.
2.4 Compatibility
Compatibility
For compatibility of the S-DIAS Safety modules, see section
"Compatibility of S-DIAS Safety Modules" in the system
handbook.
Compatibility SSI
encoder
When selecting the SSI encoder, it must be ensured that the
absolute value range of the encoder covers the entire range of
use.
For the support of rotary encoders, the absolute position of the
encoder in the safety control is extended to 32bit. This 32bit
extension is not saved and after a restart of the safety control the
absolute position of the encoder is loaded again.
Position monitoring outside the absolute value range of the
encoder is not permitted.

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3 Technical Data
3.1 SSI Encoder Specifications
Number
2
Encoder
absolute encoder with RS422 interface
Data transfer speed
125 kHz, 250 kHz, 500 kHz, 1 MHz (configurable)
Encoder resolution
maximum 32 bits
Coding
binary / gray
Encoder power supply
+24 V supply, maximum 300 mA when installing the SSI 021 in ambient
temperature up to 50 °C
+24 V supply, maximum 200 mA in 60 °C ambient temperature
internal voltage monitor +24 V (+20 % / -15 %)
Status LED
yes
A fuse for the supply voltage must be installed, which can sufficiently limit voltage
and current.
Un fusible conforme aux limites de la tension et du courant d'alimentation doit être
présent en amont de l'alimentation.

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3.2 Electrical Requirements
Voltage supply from Safety bus
+12 V
Current consumption on the
Safety bus (+12 V supply)
typically 70 mA
maximum 100 mA
Voltage supply from S-DIAS bus
+24 V
Current consumption on the S-
DIAS bus (+24 V supply)
typically 30 mA
maximum 50 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.

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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!

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3.3 Miscellaneous
Article number
20-894-021
Hardware version
1.00 / 1.10 / 2.00 / 2.10 / 3.xx
Standard
2-channel application: EN 62061 SIL 3
EN ISO 13849-1 PL e/Cat. 4
1-channel application: EN 62061 SIL 2
EN ISO 13849-1 PL d/Cat. 2
UL 508 (E247993)
Approbations
CE, CULUS, TÜV Austria EG type-tested
3.4 Environmental Conditions
Storage temperature
-20 ... +85 °C
Environmental temperature
0 ... +55 °C (UL)
0 … +60 °C starting with HW version 3.10 (CE)
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
EMV 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

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5 Connector Layout
The connections of the +24 V supply (X3: pin 1 and pin 2) or the GND supply (X3: pin
3 and pin 4) are internally bridged. To supply the module, only one connection to a
+24 V pin (pin 1 or pin 2) and a GND pin (pin 3 or pin 4) is required. The bridged
connections may be used for further looping of the +24 V supply and the GND
supply. However, it must be taken into account that a total current of 6 A per
connection is not exceeded by the forward looping!