ABB 07KT97B

首先,由于每种信号的基本硬件是相同的,自动化系统设计者只需要知道设计冻结里程碑的近似I/O计数。然后设计人员可以订购标准--而不是定制--I/O模块库和附件,因为他们知道在项目的任何时刻他们都有完全的灵活性来改变I/O类型的组合。此外,由于控制系统的硬件部件现在是标准问题,所以控制系统硬件的工厂验收测试(FAT)已成为过去。第二,因为每个通道都可以接受任何信号类型,并对任何控制器进行数字化编组,所以对物理编组的需求--以及所有的那些柜和终止--也完全消失了(图3)。除了降低成本和加快执行速度外,这还带来了额外的好处,大大减少了整个系统的足迹,这在海上石油钻井平台等应用程序中可能至关重要,因为那里的地板空间甚至允许重量都很高。仪器安装技术也可以节省时间,因为他们可以简单地把他们的钢丝对放在最方便的I/O终止对上,然后继续到下一个。

最后,单通道、可配置的I/O对切断妨碍自动化项目执行的串行设计依赖关系有很大作用。自动化系统设计的硬件和软件方面可以并行进行,压缩时间表和降低风险。但是神甫走得更远了 软件工具 以及新的执行工作流程,以确保这些简化的并行工程流程在一个经过充分测试的、完全功能化的自动化解决方案中结合起来。

Firstly, since the basic hardware of each signal is the same, automation system designers only need to know the approximate I/O count for the design freeze milestone. Then designers can order standard - rather than customized - I/O module libraries and accessories because they know they have complete flexibility to change the combination of I/O types at any time in the project. In addition, as the hardware components of the control system are now standard issues, factory acceptance testing (FAT) of the control system hardware has become a thing of the past. Secondly, because each channel can accept any signal type and digitally group any controller, the demand for physical grouping - as well as all those cabinets and terminations - has completely disappeared (Figure 3). In addition to reducing costs and accelerating execution speed, this also brings additional benefits, greatly reducing the footprint of the entire system, which may be crucial in applications such as offshore oil drilling platforms where the floor space allows for even high weight. Instrument installation technology can also save time, as they can simply place their wire pairs on the most convenient I/O termination pair and continue to the next one.

Finally, single channel, configurable I/O plays a significant role in cutting off serial design dependencies that hinder the execution of automation projects. The hardware and software aspects of automation system design can be carried out in parallel, compressing schedules and reducing risks. But the priest went further with software tools and new execution workflows to ensure that these simplified parallel engineering processes were integrated into a fully tested and fully functional automation solution.