目 錄
摘要…………………………………………………………………………………………………I
Abstract……………………………………………………………………………………………II
第1章 緒論………………………………………………………………………………………
1.1引言…………………………………………………………………………………
1.2設(shè)計的要求………………………………………………………………………………
1.2.1 設(shè)計的基本原則
1.2.2 設(shè)計的主要內(nèi)容
1.2.3 PLC控制系統(tǒng)的一般設(shè)計步驟
第2章 基于PLC雙電源開關(guān)總體方案設(shè)計………………………………………………
2.1 引言………………………………………………………………………………………
2.2 設(shè)計要求…………………………………………………………………………
2.3 總體方案的確定………………………………………………………………………
第3章 基于PLC雙電源開關(guān)控制系統(tǒng)硬件設(shè)計………………………………………
3.1 引言
3.2 電氣控制方案設(shè)計
3.3 PLC型號的選擇………………………………………………………………………
3.4 特殊功能模塊的選擇………………………………………………………………
3.4.1 技術(shù)參數(shù)……………………………………………………………………
3.4.2 FX2N-4A/D模塊的接線方式……………………………………………
3.4.3 緩沖寄存器及設(shè)置………………………………………………………
3.4.4 檢測參數(shù)設(shè)置……………………………………………………………
3.3  I/O口設(shè)計……………………………………………………………………………
3.4 系統(tǒng)外部連線電路設(shè)計……………………………………………………………
第4章 基于PLC雙電源開關(guān)控制系統(tǒng)軟件設(shè)計
4.1 引言……………………………………………………………………………
4.2 PLC控制系統(tǒng)程序設(shè)計主要步驟……………………………………………
4.3 流程圖設(shè)計…………………………………………………………………
4.4 梯形圖設(shè)計…………………………………………………………………
4.5 PLC程序語句表…………………………………………………………………

第5章 心得體會…………………………………………………………………
結(jié)論…………………………………………………………………………………………
參考文獻……………………………………………………………………………………
致謝…………………………………………………………………………………………
附錄…………………………………………………………………………………………

基于PLC雙電源開關(guān)設(shè)計

摘要：隨著人們對供電可靠性要求越來越高，很多場合需要用兩路電源來保證供電的可靠性，這就需要一種雙電源切換器在兩路電源之間進行可靠切換。采用可編程控制器(PLC)解決這類問題具有獨特的優(yōu)勢，在電氣自動化方面具有廣闊的應(yīng)用前景和很大的市場潛力。與傳統(tǒng)繼電控制系統(tǒng)相比較，可編程控制器(PLC)的優(yōu)勢在于：體積小型化，高度集成，同時還有數(shù)字運算、數(shù)據(jù)處理和數(shù)據(jù)通訊功能。PLC作為新一代的工業(yè)控制裝置，結(jié)構(gòu)簡單、性能全面、可靠性高。本課題是基于可編程控制器的雙電源開關(guān)設(shè)計，用以實現(xiàn)雙電源開關(guān)的自投自復(fù)，缺相和欠壓保護，使之可以適應(yīng)用電要求較高企業(yè)的需求。本文分析了基于PLC的雙電源開關(guān)的設(shè)計理念，設(shè)計方法，主要闡述了系統(tǒng)硬件、軟件的設(shè)計。

關(guān)鍵詞：雙電源切換；PLC；數(shù)據(jù)處理；缺相和欠壓保護

PLC-based design of dual-power switch

Abstract: With increasing demands for high reliability, a number of occasions the need to use two power supplies to ensure reliability of electricity supply, which requires a dual power switch between the two reliable switching power supply. The use of programmable logic controller (PLC) to solve this problem has a unique advantage in electrical automation applications have broad prospects and great market potential. Relay control system with the traditional, compared to programmable logic controller (PLC) has the advantage of being: the volume of smaller, highly integrated, but also the number of computing, data processing and data communication functions. PLC as a new generation of industrial control devices, simple structure, the performance of a comprehensive, high reliability. This topic is based on the programmable logic controller design of dual-power switch, dual power switch for the automatic switch from the complex, lack of phase and under-voltage protection, so that electricity can be adapted to the needs of demanding enterprises. This paper analyzes the PLC-based dual-power switch design, design methods, mainly on the system hardware and software design.

Key words: dual-power switch; PLC; data processing; missing phase and undervoltage protection