Safety Manager Safety Manual - Tuv-fs.com

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3 – Safety Manager fault detection and response An important advantage of input validation is that it can be implemented for input values of which the validity cannot be guaranteed. Furthermore, the invalid input can be exactly identified. This allows the implementation of effective correction strategies of only the affected part of the process. Common function block A last option is to create a common function block, e.g. square root. The function block validates the operand(s) and only performs the intended function if the operands are valid. Otherwise a predefined value is returned. An additional function block output should be provided which indicates if the calculation result is valid or not. This output signal can be used for the implementation of corrective actions in the application (see Figure 8 on page 36). Figure 8 Square-root function with validity check in function block Transmitter Function block Process value Alarm/ Annunciation 36 Release 131, Issue 4.2
Safety Manager special functions 4 Unit shutdown Process units If a process can be divided into independent process units, the overall process availability can be increased by a separate shutdown of the units within Safety Manager. In this way, whenever a fault is detected in the hardware of a process unit, only the affected unit needs to be shut down, while the other parts of the process remain unaffected. Configuration of unit shutdown (watchdog grouping) This subsection covers the required configuration, application programming and wiring to achieve shutdown per process unit. Figure 9 on page 38 shows a standard wiring diagram for unit shutdown of three separate process units. Safety Manager Safety Manual 37
Page 1 and 2: Safety Manager Safety Manual EP-SM.
Page 3 and 4: Tip This symbol is used for useful,
Page 5 and 6: Contents 1 The Safety Manual 1 Cont
Page 7 and 8: The Safety Manual 1 Content of Safe
Page 9 and 10: Basic skills and knowledge Basic sk
Page 11 and 12: Safety standards for Process & Equi
Page 13 and 14: Safety standards for Process & Equi
Page 15 and 16: Architectural principle and standar
Page 17 and 18: Figure 3 Functional diagram: QMR ar
Page 19 and 20: Certification Certification The adv
Page 21 and 22: Standards compliance Standards comp
Page 23 and 24: Standards compliance IEC 60068-2-30
Page 25 and 26: Safety Manager fault detection and
Page 27 and 28: Shutdown at assertion of Safety Man
Page 29 and 30: SM Controller faults Table 4 Contro
Page 31 and 32: SM Controller faults Table 7 Contro
Page 33 and 34: SM IO faults SM IO faults Tip: For
Page 35 and 36: SM IO faults Digital output faults
Page 37 and 38: SM IO faults Table 13 on page 31 sh
Page 39 and 40: SM IO faults . The input compare er
Page 41: Calculation errors Sometimes, howev
Page 45 and 46: Unit shutdown outputs The unit shut
Page 47 and 48: On-line modification On-line modifi
Page 49 and 50: SafeNet communication The maximum r
Page 51 and 52: SafeNet communication System respon
Page 53 and 54: Special requirements for TUV-approv
Page 55 and 56: 12. To reduce the influence of dist
Page 57 and 58: F&G applications F&G applications F
Page 59 and 60: Fax Transmittal Fax Number: +31 (0)

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