電機(jī)為交流異步電機(jī)，紙機(jī)設(shè)計(jì)最高轉(zhuǎn)速為1800m/min,傳動(dòng)控制系統(tǒng)為T(mén)Mdrive-10e2，PWM控制的交直交變頻矢量控制系統(tǒng)，功率元件采用絕緣柵雙極晶體管(IGBT)。
傳動(dòng)逆變器柜類(lèi)型較多，250KVA以下為抽屜式，250KVA以上為柜式結(jié)構(gòu)，根據(jù)電機(jī)容量的差異來(lái)選用不同容量控制系統(tǒng)，用于紙機(jī)的變頻控制。
逆變器的傳動(dòng)矢量控制組成：速度給定環(huán)節(jié)、速度調(diào)節(jié)器、D/Q軸電流調(diào)節(jié)器、磁通調(diào)節(jié)器、電壓調(diào)節(jié)器、PWM控制器等組成。主板在矢量控制系統(tǒng)完成IGBT觸發(fā)信號(hào)后，把觸發(fā)脈沖傳送到逆變器，控制IGBT導(dǎo)通和關(guān)斷，得到所需電機(jī)近似于正弦波的輸入電壓和頻率，進(jìn)而調(diào)節(jié)電機(jī)轉(zhuǎn)速。
2.4 數(shù)據(jù)通信
傳動(dòng)系統(tǒng)和PLC間通信采用FL-NET總線,光纖連接，變頻器與HUB之間，以太網(wǎng)通訊。結(jié)構(gòu)仍以圖2為例。
PLC系統(tǒng)配置了一塊FL612接口模塊和一塊EGD模塊，與各變頻器進(jìn)行數(shù)據(jù)交換。各變頻器地址均在EGD中配置，傳動(dòng)與PLC的通信及傳動(dòng)與傳動(dòng)之間的通信都是通過(guò)EGD來(lái)完成數(shù)據(jù)交換的。
FL-NET網(wǎng)絡(luò)以Ethernet為物理層，采用總線拓?fù)浣Y(jié)構(gòu)，是日本采納的一種PLC網(wǎng)絡(luò)標(biāo)準(zhǔn)，其協(xié)議棧高層為UDP/IP+ UDP/IP+獨(dú)自循環(huán)通信協(xié)議，保證了通信的實(shí)時(shí)性。
完成PLC系統(tǒng)與傳動(dòng)系統(tǒng)間數(shù)據(jù)交換基于EGD(Ethernet Global Data)以太網(wǎng)全局?jǐn)?shù)據(jù)處理通信，EGD協(xié)議是美國(guó)GE自動(dòng)化公司基于以太網(wǎng)技術(shù)的數(shù)據(jù)交換協(xié)議，它以數(shù)據(jù)報(bào)文形式在一個(gè)發(fā)送者和多個(gè)發(fā)送者之間實(shí)現(xiàn)100Mbps數(shù)據(jù)高速傳送，遵循UDP/IP獨(dú)自循環(huán)通信協(xié)議。數(shù)據(jù)發(fā)送時(shí)間間隔短，安全性強(qiáng)，不易丟失，各站為雙向角色，既是服務(wù)器也是客戶(hù)端。
3. 系統(tǒng)控制功能
TMEIC集成控制器完成整個(gè)紙機(jī)的速度計(jì)算與控制、負(fù)荷分配計(jì)算與控制、電機(jī)同步計(jì)算與保護(hù)等功能。
衛(wèi)生紙機(jī)的速度基準(zhǔn)以烘缸Yankee為準(zhǔn)，Yankee烘缸由兩臺(tái)電機(jī)驅(qū)動(dòng)，1#Yankee電機(jī)為master，控制方式為速度控制，2#Yankee電機(jī)為slave，控制方式為轉(zhuǎn)矩控制，兩臺(tái)電機(jī)為一個(gè)整體，要求速度同步。generation of control system will fully meet or exceed that of similar imported brand equipment, and meet the upgrading of equipment, with considerable flexibility and expansion.
In order to achieve the preset R & D objectives, at the beginning of the project, the brand and model selection of PLC, the core controller of the control system, has become one of the key factors affecting the success or failure of the project. After repeated comparison of various series PLCs of the mainstream brand PLC in the system, it is finally determined to select the latest small PLC s7-1200 launched by Siemens as the core controller of the control system of the new generation reflow equipment.
Jintuo's new generation RN (a) d reflow soldering equipment was launched on the market in the spring of 2010 and was immediately supported by our customers. Many superior performances such as the significant improvement of production efficiency, the significant reduction of energy consumption and humanized design have been highly praised by customers. The good performance of the equipment must rely on the high reliability and good
