聯(lián)系人:蔣經(jīng)理
手機(jī):15359273790
電話:15359273790
Q Q:3549711439
郵箱:3549711439@qq.com
地址:廈門(mén)市思明區(qū)呂嶺路1733號(hào)2009單元
型號(hào):PMCPROFINET
類(lèi)別:EMERSON /艾默生
聯(lián)系人:蔣經(jīng)理
手機(jī):15359273790
電話:15359273790
Q Q:3549711439
郵箱:3549711439@qq.com
地址:廈門(mén)市思明區(qū)呂嶺路1733號(hào)2009單元
EMERSON PMCPROFINET連接不同工控網(wǎng)絡(luò)的橋梁
電動(dòng)機(jī)自起動(dòng)時(shí)允許的低端點(diǎn)電壓限值
電動(dòng)機(jī)的轉(zhuǎn)矩與電壓的平方成正比,電動(dòng)機(jī)自起動(dòng)時(shí),會(huì)引起機(jī)端電壓的大量降低,當(dāng)降低到一定值時(shí),便不能自起動(dòng)。對(duì)于一般 電動(dòng)機(jī),當(dāng)電壓降低到70% Un(電動(dòng)機(jī)額定電壓)時(shí),它的轉(zhuǎn)矩降為49% Mn(電動(dòng)機(jī)額定轉(zhuǎn)矩)。一般情況下,電動(dòng)機(jī)的額定電壓下運(yùn)行時(shí),它的大轉(zhuǎn)矩為額定轉(zhuǎn)矩的兩倍,既當(dāng)U=Un時(shí),Mmax=2Mn。而電壓為70% Un,既當(dāng)U=0.7Un時(shí),大轉(zhuǎn)矩Mmax既相應(yīng)降至0.49×2<1。
?如果電動(dòng)機(jī)已帶有額定阻轉(zhuǎn)矩,此時(shí)電動(dòng)機(jī)就會(huì)減速,直至轉(zhuǎn)矩高點(diǎn)0.49×2<1仍不能平衡,因而就會(huì)停轉(zhuǎn)。實(shí)際上,電動(dòng)機(jī)驅(qū)動(dòng)的機(jī)械均有慣性,電壓降低后,電磁轉(zhuǎn)矩雖然立即下降,但機(jī)組轉(zhuǎn)速尚無(wú)大的變化。所以考慮了慣性后,電動(dòng)機(jī)允許低端點(diǎn)電壓限值可為70% Un 。
BATTERY CHARGER OPTIMIZED 7 12V/10A-24V/5A ACCUMATE CHARGER
Ducati Adapter OptiMATE SAE Male DDA Male Hypermotard Hyperstrada 821 939
Tecmate OptiMate Kickstand Puck 10 Pack (TS-251X10PACK)
Disney WOW World of Wonder 2 Disc DVD 2010 Home Theater Optimization New Sealed
Av Optimization Centerlock Non Boost Hub Adapter IN Version (15x100 Axis)
STRUCTURAL OPTIMIZATION By William R. Spillers & Keith M. Macbain - Hardcover
UNIVERSAL Optimate USB Cable Kit sae 617125000108
Mechanical Design Synthesis : Creative Design and Optimization 2nd ed.
-

Vibro-meter 200-560-000-016 200-560-101-015 VM600 IOC4T
-

Vibro-meter 200-510-070-113 200-510-111-034 VM600 MPC4
-

Vibro-meter 200-510-041-021 200-510-111-021 VM600 MPC4
-

Emerson VE3008 CE3008 KJ2005X1-MQ1 12P6381X042
-

Emerson P152.R4
-

EMERSON A6220允許客戶靈活地創(chuàng)建過(guò)程解決方案
-

EMERSON A6410不同冗余級(jí)別的分布式安全應(yīng)用
-

EMERSON A6740使用可互換的通信和傳感器模塊







