v6rev 12025-08-04IEC 61508-4 MOD
mode of operation (SIL)
0112/2///61987#ABB910
way in which a safety-related system is intended to be used, with respect to the frequency of demands made upon it, which may be either low demand mode, where the frequency of demands for operation made on a safety related, system is no greater than one per year and no greater than twice the proof-test, frequency; or high demand or continuous mode, where the frequency of demands for operation made, on a safety-related system is greater than one per year or greater than twice the proof check frequency
- Used by classes
- 2
- Code
ABB910- Data type
- ENUM_STRING_TYPEABL497 ABL497
- Condition
0112/2///61987#ABI406
All properties29#
- Version
- 6
- Revision
- 1
- Preferred name
- mode of operation (SIL)
- Definition
- way in which a safety-related system is intended to be used, with respect to the frequency of demands made upon it, which may be either low demand mode, where the frequency of demands for operation made on a safety related, system is no greater than one per year and no greater than twice the proof-test, frequency; or high demand or continuous mode, where the frequency of demands for operation made, on a safety-related system is greater than one per year or greater than twice the proof check frequency
- Definition source
- IEC 61508-4 MOD
- Definition class
- 0112/2///61987#ABA000Equipment for industrial-process automation
- Value format
- {0112/2///61987#ABI406}
- Responsible committee
- IEC/SC 65E
- Publisher
- IEC
- Published in
- IEC 61987
- Published in
- DEPENDENT_P_DET
- Status level
- Standard
- Version release date
- 2025-08-04
- Revision release date
- 2025-08-04
- Version initiation date
- 2025-08-04
- Original definition date
- 2017-12-07
- Change request ID
- C00185
- C017
- C018
- C019
- MDC_P022
- ENUM_STRING_TYPE(0112/2///61987#ABL497)