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Schumacher 1442-0218D放大器
修改记录和变更管理
应创建修改记录，以提供每个请求或需要更改。变更管理程序必须考虑在授权变更之前，每项此类变更的影响。这个变更的实施必须重复安全生命周期阶段被改变了。结果变化的测试必须包括非回归测试以及变化本身的测试。所有测试结果必须记录。
退役必须指定系统退役的程序。这程序必须包括安全退役的要求系统和材料的安全移除或返还（如适用）。与调试一样，可能会在分阶段进行。退役程序必须确保在保持功能安全的同时，开发相应的存在危险。同样，控制的物理环境当设备需要运行时，必须对其进行维护。
退役程序必须解决以下事项：
•清除危险的顺序。
•允许消除安全之间相互作用的方法功能，同时保持剩余可能的功能安全危险和未启动安全响应。这必须包括系统之间的交互。
•返回模块和材料的定义退役后道德处置的罗克韦尔自动化。
变化历史本附录包含每个修订版的新信息或更新信息本出版物。这些列表仅包含实质性更新旨在反映所有变化。
翻译版本并不总是适用于本手册中使用了以下术语和缩写。对于此处未列出的术语定义，请参阅Allen Bradley Industrial自动化术语表，出版物AG-7.1。
A.AADvance Workbench软件一种设计、配置和维护软件环境，可实现将多控制器安全策略设计为单个项目，然后针对每个控制器的策略部分。
AADvance Trusted SIS工作站软件用于构建用于Trusted®的过程控制项目的软件套件8000系列控制器或AADvance®9000系列控制器。
精度测量值与标准或真实值的符合程度。另请参见“分辨率”。可实现的安全状态可实现的一种安全状态。有时，无法实现安全状态。例如不可恢复的故障，例如带有短路的表决元件开关没有办法绕过短路的影响。
Modification Records and Change Management
Modification records shall be created to give traceability of each requested or required change. The change management procedure must consider the impact of each such change before authorizing the change. The implementation of the change must repeat the safety lifecycle phases which are altered by the change. The test of the resultant changes must include nonregression testing as well as test of the change itself. All test results must be recorded. Decommissioning The procedure for decommissioning the system must be specified. This procedure must include the requirements for the safe decommissioning of the system and, where applicable, the safe removal or return of materials.As with commissioning, it is likely the decommissioning will be performed in a phased manner. The decommissioning procedure must make sure that a plan be developed that maintains the functional safety while the corresponding hazards are present. Similarly, the physical environment of the control equipment must be maintained while the equipment is required to function. The procedure for decommissioning must address the following items: • The sequence in which the hazards are to be removed. • Methods which permit the removal of interactions between safety functions while maintaining functional safety for the remaining possible hazards and without initiating safety responses. This must include the interaction between systems. • A definition of the modules and materials which are to be returned to Rockwell Automation for ethical disposal following decommissioning.
History of Changes
This appendix contains the new or updated information for each revision of this publication. These lists include substantive updates only and are not intended to reflect all changes. Translated versions are not always available for each revision.The following terms and abbreviations are used throughout this manual. For definitions of terms not listed here, refer to the Allen-Bradley Industrial Automation Glossary, publication AG-7.1. A AADvance Workbench software A design, configuration, and maintenance software environment that enables the design of a multi-controller safety strategy as a single project, and then targets parts of the strategy for each controller. AADvance-Trusted SIS Workstation software A software suite for building process control projects for use with Trusted® Series 8000 controllers or AADvance® Series 9000 controllers. accuracy The degree of conformity of a measure to a standard or a true value. See also 'resolution'. achievable safe state A safe state that is achievable.Sometimes, a safe state cannot be achieved. An example is a non-recoverable fault such as a voting element with a shorted switch and no means to bypass the effect of the short.
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