ABB PM633

System 800xA 的 S800 I/O 是分布式、高度调制且灵活的 I/O 系统，可轻松安装 I/O 模块和过程布线。S800 I/O 模块和终端单元可以以多种不同的配置进行安装和组合，以满足空间要求或满足任何应用。种类齐全的 I/O 模块和附件可用于安全关键和非关键用途。在 S800 I/O 系列中，有符合 SIL3 标准的模块，可用于安全关键型应用。

高完整性 I/O 经过 IEC 61508-SIL3、DIN V 19250/DIN V VDE 0801-AK6 和 EN954-1 类别 4 认证。高完整性 I/O 必须与经过认证的控制器一起使用，以符合标准。属于高完整性 I/O 系列的三个模块已通过这些标准认证：AI880/AI880A、DI880 和 DO880。这些模块仅受 AC 800M 控制器 PM865 支持，并且在添加光集群时必须使用光 ModuleBus 调制解调器 TB840。 

The S800 I/O of System 800xA is a distributed, highly modulated, and flexible I/O system that allows for easy installation of I/O modules and process wiring. The S800 I/O module and terminal unit can be installed and combined in various different configurations to meet space requirements or any application. A complete range of I/O modules and accessories can be used for safety critical and non critical purposes. In the S800 I/O series, there are modules that comply with the SIL3 standard and can be used for safety critical applications.

High integrity I/O is certified to IEC 61508-SIL3, DIN V 19250/DIN V VDE 0801-AK6, and EN954-1 Class 4. High integrity I/O must be used with certified controllers to comply with standards. Three modules belonging to the high integrity I/O series have passed these standard certifications: AI880/AI880A, DI880, and DO880. These modules are only supported by the AC 800M controller PM865 and must use the optical ModuleBus modem TB840 when adding an optical cluster.