ABB AC500-S Application Note
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ABB AC500-S Application Note

ABB AC500-S Application Note

Safety programmable logic controllers
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Application Note
AC500-S
Usage of AC500 Digital Standard I/Os
in Functional Safety Applications
up to PL c (ISO 13849-1)

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Summary of Contents for ABB AC500-S

  • Page 1 Application Note AC500-S Usage of AC500 Digital Standard I/Os in Functional Safety Applications up to PL c (ISO 13849-1)

  • Page 2: Table Of Contents

    Calculation of the probability of failure and correspondence to PL (ISO 13849-1) ....20 Conclusion _____________________________________________________ 23 Page 2/24 We reserve all rights in this document. Reproduction, use or disclosure to third parties without express authority is strictly forbidden. Ó 2015 ABB Ltd.

  • Page 3: Introduction

    AC500 technical support at www.abb.com/PLC for more details) and, thus, is not shown in this document. Page 3/24 We reserve all rights in this document. Reproduction, use or disclosure to third parties without express authority is strictly forbidden. Ó 2015 ABB Ltd.

  • Page 4: Document History

    Definitions, expressions, abbreviations AC500 ABB PLC, refer also to www.abb.com/PLC for further details Page 4/24 We reserve all rights in this document. Reproduction, use or disclosure to third parties without express authority is strictly forbidden. Ó 2015 ABB Ltd.

  • Page 5: References / Related Documents

    EN ISO 13849 AC500 Documentation, refer to www.abb.com/PLC and then navigate to Downloads area Page 5/24 We reserve all rights in this document. Reproduction, use or disclosure to third parties without express authority is strictly forbidden. Ó 2015 ABB Ltd.

  • Page 6: Usage Of Digital Standard I/Os In Functional Safety Applications Up To Pl C

    DX581-S, one can use digital standard I/O chan- nels from standard I/O modules, like DC523. Page 6/24 We reserve all rights in this document. Reproduction, use or disclosure to third parties without express authority is strictly forbidden. Ó 2015 ABB Ltd.
  • Page 7 Remote digital standard I/O modules can be used as well (refer to www.abb.com/PLC for more details on available AC500 modules). Page 7/24 We reserve all rights in this document. Reproduction, use or disclosure to third parties without express authority is strictly forbidden. Ó 2015 ABB Ltd.

  • Page 8: Task

    (MTTFd = High or Medium) and even PL d (MTTFd = High) requirements is the usage of Category 2, DCavg = Low. Page 8/24 We reserve all rights in this document. Reproduction, use or disclosure to third parties without express authority is strictly forbidden. Ó 2015 ABB Ltd.
  • Page 9 Category 2 architecture based on ISO 13849-1 is shown in Figure 3. Figure 3. Category 2 architecture from ISO 13849-1 Page 9/24 We reserve all rights in this document. Reproduction, use or disclosure to third parties without express authority is strictly forbidden. Ó 2015 ABB Ltd.
  • Page 10 AC500 modules (DC523 and PM573) are used. This input part will be always application-specific and will require additional measures to satisfy PL c requirements. Page 10/24 We reserve all rights in this document. Reproduction, use or disclosure to third parties without express authority is strictly forbidden. Ó 2015 ABB Ltd.
  • Page 11 DC523 (see Fig- DANGER ure 5)) within PM573 CPU. Page 11/24 We reserve all rights in this document. Reproduction, use or disclosure to third parties without express authority is strictly forbidden. Ó 2015 ABB Ltd.
  • Page 12 LOW and HIGH phases are supervised) is not available, the safety reaction is triggered to stop the machine, e.g., through DX581-S digital safety input/output module. Page 12/24 We reserve all rights in this document. Reproduction, use or disclosure to third parties without express authority is strictly forbidden. Ó 2015 ABB Ltd.
  • Page 13 PL c (ISO 13849-1) is analysed with more details in an example in Chapter 3. Page 13/24 We reserve all rights in this document. Reproduction, use or disclosure to third parties without express authority is strictly forbidden. Ó 2015 ABB Ltd.

  • Page 14: Example

    5), which leads to SS1 (Safe Stop 1) with a controlled stop of the motor within a maxi- mum permissible time. Page 14/24 We reserve all rights in this document. Reproduction, use or disclosure to third parties without express authority is strictly forbidden. Ó 2015 ABB Ltd.

  • Page 15: Functional Description

    SM560-S Safety CPU through internal I/O bus, PM573 CPU DANGER and then internal coupler bus communication to SM560-S Safety CPU. Page 15/24 We reserve all rights in this document. Reproduction, use or disclosure to third parties without express authority is strictly forbidden. Ó 2015 ABB Ltd.

  • Page 16: Design Features

    Cyclic Non-safe Data Exchange [2], which has higher performance of data transfer than using SF_DPRAM_PM5XX_S_REC SF_DPRAM_PM5XX_S_SEND FBs. Page 16/24 We reserve all rights in this document. Reproduction, use or disclosure to third parties without express authority is strictly forbidden. Ó 2015 ABB Ltd.
  • Page 17 C0 and shall be further used in SF_EmergencyStop and SF_SafetyRequest FBs (see [1] for more details) to properly implement emergency stop function- ality. Page 17/24 We reserve all rights in this document. Reproduction, use or disclosure to third parties without express authority is strictly forbidden. Ó 2015 ABB Ltd.

  • Page 18: Common Cause Failures

    Environmental (EMC, etc.), refer to CE declaration type test report for a given AC500 product – 25 points Page 18/24 We reserve all rights in this document. Reproduction, use or disclosure to third parties without express authority is strictly forbidden. Ó 2015 ABB Ltd.

  • Page 19: Systematic Failures

    ISO 13849-1) on the application level for the application part in DANGER which standard (non-safety) modules are used. Page 19/24 We reserve all rights in this document. Reproduction, use or disclosure to third parties without express authority is strictly forbidden. Ó 2015 ABB Ltd.

  • Page 20: Safety Function Response Time

    15% of PL c for Category 2 (refer also to PFHavg values listed in Table K1 of ISO 13849-1 for given Category, DC and MTTFd values). Page 20/24 We reserve all rights in this document. Reproduction, use or disclosure to third parties without express authority is strictly forbidden. Ó 2015 ABB Ltd.
  • Page 21 FSDT library. Figures 8 shows a screen shot from FSDT safety calculation. Page 21/24 We reserve all rights in this document. Reproduction, use or disclosure to third parties without express authority is strictly forbidden. Ó 2015 ABB Ltd.
  • Page 22 1/h) from Table K1 of ISO 13849-1 for PL c), which means that the proposed approach is suitable for usage in safety application up to PL c (ISO 13849-1). Page 22/24 We reserve all rights in this document. Reproduction, use or disclosure to third parties without express authority is strictly forbidden. Ó 2015 ABB Ltd.

  • Page 23: Conclusion

    AC500 technical support at www.abb.com/PLC for more details), which is not shown in this document. Page 23/24 We reserve all rights in this document. Reproduction, use or disclosure to third parties without express authority is strictly forbidden. Ó 2015 ABB Ltd.
  • Page 24 68526 Ladenburg, Germany notice. With regard to purchase orders, the agreed Phone: +49 62 21 701 1444 particulars shall prevail. ABB AG does not accept any Fax: +49 62 21 701 1382 responsibility whatsoever for potential errors or possible lack of information in this document.

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