ABB GFD563A102 3BHE046836R0102 可编程控制器

ABB GFD563A102 3BHE046836R0102 可编程控制器

ABB GFD563A102 3BHE046836R0102 可编程控制器是能够单命名并立地完成一定功能的程序语句的集合(即程序代码和数据结构的集合体)。它具有两个基本的特征:外部特征和内部特征。外部特征是指模块跟外部环境联系的接口(即其他模块或程序调用该模块的方式包括有输入输出参数、引用的全局变量)和模块的功能;内部特征是指模块的内部环境具有的特点(即该模块的局部教据和程序代码)。

ABB GFD563A102 3BHE046836R0102 可编程控制器在实际运行操作中，已经设计了手动操作箱，有控制逻辑线路和手动按钮。手动按钮控制冷风机供电回路继电器吸合或放开，从而达到手动控制冷风机投运或切除的目的。如果操作人员根据负载情况和气候条件，及时投切冷风机，可达到既变压器可靠运行，又能延长冷风机使用寿命，并起到节约电能的目的。

然而，“及时投切”实施起来有困难。操作人员为了变压器可靠运行，习惯上采取冷风机全部投入运行的简化工作模式。这就造成了冷风机过渡运行，容易引发冷风机故障。

ABB GFD563A102 3BHE046836R0102 可编程控制器

ABB GFD563A102 3BHE046836R0102 Programmable controller is a collection of program statements (that is, a collection of program code and data structures) that can be named single and complete a certain function. It has two basic characteristics: external characteristics and internal characteristics. External features refer to the interface between the module and the external environment (that is, the way that other modules or programs call the module includes input and output parameters, referenced global variables) and the function of the module; Internal features refer to the characteristics of the module's internal environment (i.e. the module's local data and program code).

ABB GFD563A102 3BHE046836R0102 Programmable controller In actual operation, has designed a manual operation box, control logic line and manual button. The manual button controls the chiller power supply circuit relay to pull or release, so as to achieve the purpose of manually controlling the chiller operation or removal. If the operator according to the load and climate conditions, timely cut the chiller, can achieve reliable operation of the transformer, but also to extend the service life of the chiller, and to save energy.

However, the implementation of "timely investment" has been difficult. In order to ensure the reliable operation of the transformer, the operator traditionally adopts a simplified working mode in which the chillers are all put into operation. This causes the transition operation of the chiller, which is easy to cause the failure of the chiller.

ABB GFD563A102 3BHE046836R0102 可编程控制器

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