Software:Safety Integrity Software Tool for Machine Applications
The Safety Integrity Software Tool for the Evaluation of Machine Applications (SISTEMA) is a software tool developed by the Institut für Arbeitsschutz der Deutschen Gesetzlichen Unfallversicherung (IFA), which translates to the Institute for occupational safety and health of the German Social Accident Insurance, in Germany. The IFA was formerly known as "BGIA".[1]
The IFA provides testing and certification services to organizations, as well as conducting research projects related to the scope of the organization.
Safety Integrity Software Tool for the Evaluation of Machine Applications (SISTEMA)
SISTEMA is a software tool that provides both functional safety analysis and documentation according to ISO 13849.[2] [3]
SISTEMA is used to help fulfil the analytical validation step in ISO 13849-2. [3] The software will calculate the Performance Level (PL) of a safety function, and compare it to the PLr determined according to the risk assessment, see ISO 13849.
Safety functions (SF) are contructed from sub-systems (SB), which can be constructed from Blocks (BL) and Elements (EL). The tool supports the five designated architectures, Category B, 1, 2, 3, 4, as defined in ISO 13849-1.
Projects (PR) show safety functions (SF) in a tree format. Under each SF, sub-systems (SB) can be added to describe inputs, logic, and outputs. Some system components, i.e., safety PLCs and similar devices, are added as SBs in their own right. Other components, i.e., emergency stop buttons, light curtains, etc., can be brought in as blocks (BL) or as elements (EL). Elements are always added to blocks. All of these parts of a project can be added manually, however, use of library data whenever possible is recommended.
Depending on the designated architecture selected, i.e., Category B, 1-4, each SB will have either a single-channel or a dual-channel arrangement. Blocks and elements can have any relevant architecture.
Component reliability data
SISTEMA is provided with a generic component library based on ISO 13849-2 Annexes A-D[3], however, users should obtain the component library files from the control component manufacturers that are supplying the components used in their design. Using the OEM's data helps to avoid introducing transcription errors, and will often be accompanied by additional information that will automatically populate the relevant documentation page for the SB, BL or EL.
The IFA[4] provides a link list to manufacturer's websites where the SISTEMA data library files can be downloaded. [5] Unfortunately, these links are not always current, so you may have to search the manufacturer's site to find the file(s). Some manufacturers offer project files rather than library files for their components.
Library file formats
The library files are provided in one of two formats. SISTEMA includes a library file tool for each format to allow users to load and access the data in the library files. The formats for the library files include:
- *.slb - Proprietary SISTEMA file format
- *.xml - Open SML data format according to the VDMA 66413 format[6]
Version history
The following installation files can be downloaded directly (also older versions for retrospective installation).[7]
| Version Number | Notes |
|---|---|
| 2.0.8 Build 4 | -- |
| 2.0.7 Build 2 | -- |
| 2.0.6 Build 1 | -- |
| 1.1.9 Build 2 | -- |
| 1.1.8 Build 3 | -- |
| 1.1.7 | withdrawn 2014-04-01 |
| 1.1.6 | -- |
| 1.1.5 | -- |
| 1.1.4 | -- |
| 1.1.3 | withdrawn 2010-11-22 |
| 1.1.2 | -- |
| 1.1.1 | -- |
| 1.1.0 | -- |
| 1.0.5 | -- |
Multiple versions of SISTEMA can be installed on the same PC. In this case, a separate installation folder must be specified for each version.
OS requirements
SISTEMA is only available for Microsoft Windows operating systems.
Supporting materials
IFA publishes a series of cookbooks and reports that can help users to better understand how to apply SISTEMA. These materials are available from the IFA website at no cost, in German and English.[8]
Cookbooks
The following cookbooks are available in English:
- The SISTEMA Cookbook 1: From the schematic circuit diagram to the Performance Level – quantification of safety functions with SISTEMA, Version 1.0 (EN)
- The SISTEMA Cookbook 2: Use of network libraries
- The SISTEMA Cookbook 3: Running several instances of SISTEMA in parallel (terminal server), Version 2.0 (EN)
- The SISTEMA Cookbook 4: When the designated architectures don't match, Version 2.0 (EN), and SISTEMA file with corresponding project examples
- The SISTEMA Cookbook 5: SISTEMA libraries, Version 2.0 (EN), and Example library
- The SISTEMA Cookbook 6: Definitions of safety functions: What is important?, Version 1.0 (EN)
Reports
The following reports are available in English:
- IFA Report 4/2018e, Safe drive controls with frequency inverters and example project files.[9]
- IFA Report 2/2017e, Functional safety of machine controls and example project files.[10]
- IFA Report 2/2008e, Functional safety of machine controls, replaced by Report 2/2017e, no longer available.
References
- ↑ "Institut für Arbeitsschutz der Deutschen Gesetzlichen Unfallversicherung (IFA)". German Social Accident Insurance (DGUV). https://www.dguv.de/ifa/pruefung-zertifizierung/index-2.jsp.
- ↑ "ISO 13849-1:2015, Safety of machinery — Safety-related parts of control systems — Part 1: General principles for design". International Organziation for Standardization (ISO). https://www.iso.org/standard/69883.html.
- ↑ 3.0 3.1 3.2 "ISO 13849-2:2012, Safety of machinery — Safety-related parts of control systems — Part 2: Validation". International Organziation for Standardization (ISO). https://www.iso.org/standard/53640.html.
- ↑ "About ourselves". Deutsche Gesetzliche Unfallversicherung e.V. (DGUV). https://www.dguv.de/ifa/wir-ueber-uns/index-2.jsp.
- ↑ "SISTEMA libraries". Deutsche Gesetzliche Unfallversicherung e.V. (DGUV). https://www.dguv.de/ifa/praxishilfen/practical-solutions-machine-safety/software-sistema/sistema-bibliotheken/index.jsp.
- ↑ "Electrical Automation". VDMA e. V.. https://www.vdma.org/electrical-automation.
- ↑ "All SISTEMA versions". Deutsche Gesetzliche Unfallversicherung e.V. (DGUV). https://www.dguv.de/ifa/praxishilfen/practical-solutions-machine-safety/software-sistema/alle-sistema-versionen/index.jsp.
- ↑ "SISTEMA Cookbooks". Deutsche Gesetzliche Unfallversicherung e.V. (DGUV). https://www.dguv.de/ifa/praxishilfen/practical-solutions-machine-safety/software-sistema/sistema-kochbuecher/index.jsp.
- ↑ "Safe drive controls with frequency inverters IFA Report 4/2018e". Deutsche Gesetzliche Unfallversicherung e.V. (DGUV). https://www.dguv.de/ifa/publikationen/reports-download/reports-2018/ifa-report-4-2018/index-2.jsp.
- ↑ "Functional safety of machine controls (IFA Report 2/2017e)". Deutsche Gesetzliche Unfallversicherung e.V. (DGUV). https://www.dguv.de/ifa/publikationen/reports-download/reports-2017/ifa-report-2-2017/index-2.jsp.
 |  |
