描述

一臺(tái)變頻器同時(shí)帶幾臺(tái)甚至幾十臺(tái)電機(jī)，所有電機(jī)的速度都由同一臺(tái)變頻器的輸出頻率控制，理論上所有電機(jī)的速度是一致的，并且能保證同時(shí)升速與降速。

但是由于電機(jī)制造上的差異，或者電機(jī)所帶負(fù)載大小的不同，每臺(tái)電機(jī)的實(shí)際運(yùn)行速度是有差異的，并且系統(tǒng)內(nèi)沒有糾正這種差異的機(jī)制，也無法安裝糾正差異的機(jī)構(gòu)，所以在一些設(shè)備之間沒有連接的場合，這種控制方法肯定會(huì)產(chǎn)生積累誤差。

把變頻器看成供電電源，在一些剛性連接的系統(tǒng)中，運(yùn)轉(zhuǎn)得稍快的電機(jī)，負(fù)載會(huì)重；而運(yùn)轉(zhuǎn)得稍慢的電機(jī)負(fù)載會(huì)輕。但因是同一個(gè)變頻器驅(qū)動(dòng)，負(fù)載重的轉(zhuǎn)差率變大，負(fù)載輕的轉(zhuǎn)差率變小，這樣就會(huì)有一定的自動(dòng)糾正能力，最終會(huì)使各臺(tái)電機(jī)保持同步運(yùn)行，但是負(fù)載分配是不均勻的，一般在選擇電機(jī)時(shí)要把電機(jī)功率放大一級(jí)。

歐美品牌停產(chǎn)的，常用的“PLC”備品備件

我司產(chǎn)品應(yīng)用于以下領(lǐng)域：

1,《發(fā)電廠DCS監(jiān)控系統(tǒng)》

2,《智能平鋼化爐系統(tǒng)制造》

3,《PLC可編程輸送控制系統(tǒng)》

4,《DCS集散控制系統(tǒng)》
?
5,《智能型消防供水控制系統(tǒng)》

6,《化工廠藥液恒流量計(jì)算機(jī)控制系統(tǒng)》

7,《電氣控制系統(tǒng)》造紙,印染生產(chǎn)線,變電站綜合自動(dòng)化控制系列

本特利，英維思，伍德沃德，?？怂共_、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂，ACSO，力士樂等各大品牌的DCS系統(tǒng)配件，機(jī)器人系統(tǒng)配件，大型伺服系統(tǒng)備件。

Creative Technology SBS 260 Computer Speakers

SBS TECHNOLOGIES 85224036 21-100-2 PCI HOST

SBS TECHNOLOGIES/AMAT/MEI CPCI BOARDS AND CHASSIS

New SBS Technologies VME-6200 Disk Drive Module#29241

PERFORMANCE TECHNOLOGIES PT-SBS 915 PT-SBS915 BOARD

SBS Technologies CP782210NQ3C VME CPU BOARD

New Creative Technology SBS Vivid 80 Sky Blue Speakers

SBS Technologies CP 6212 Universal Serial I/O

New Creative Technology SBS Vivid 80 Black Speakers

New Creative Technology SBS Vivid 80 White Speakers

New Creative Technology SBS Vivid 80 Navy Speakers

SBS TECHNOLOGIES 85851090 REV C NEW Free Shipping

ADVANCED TECHNOLOGY SBS4700 Slip On Carbine Buttpad

ADVANCED TECHNOLOGY SBS4600 Barrel Shroud-Ghost Sights

SBS Technologies 85854346 REV D VME Adapter Board

GE FANUC SBS Technologies 85224045 Backplane Controller

1 Year Warranty!!Bit 3 Operations 210-2 Backplane Card

Expedited shipping available

GE FANUC SBS Technologies 10-102 82004130-04 Cable

Expedited shipping available

SBS Technologies ABI-V6-2 MIL-STD-1553 VME Board

2 Dual Redundant MIL-STD-1553 channels.90 Day Warranty

SBS Technologies ABI-V6-2 MIL-STD-1553 VME

2 Dual Redundant MIL-STD-1553 channels.90 Day Warranty

GE FANUC SBS Technologies 85224036 21-100-2 PCI HOST

One Year Warranty!!85224035 PCI Host Card

Expedited shipping available

SBS TECHNOLOGIES 85224036 MODEL:21-100-2 PCI HOST

SBS Technologies ABI-V6-2 MIL-STD-1553 VME Interface

2 Dual Redundant MIL-STD-1553 channels.90 Day Warranty

GE FANUC SBS Technologies 85224038 PCI HOST CARD

One Year Warranty!!Remote Power-up PCI Host Card

Expedited shipping available

SBS TECHNOLOGIES 85853635 VME BOARD REV C

GE FANUC SBS Technologies 85224042 Backplane Controller

One Year Warranty!!Remote Power-up PCI Backplane Card

Expedited shipping available

GE FANUC SBS Technologies OS-P100-H 64BIT PCI HOST CARD

One Year Warranty!!Omnispan pt#85921557 PCI Host Card

Expedited shipping available

Creative Technology SBS 35 Computer Speakers

BUTTPAD FOR ADVANCED TECHNOLOGY 6POSITION STOCK SBS4700

SBS Technologies,Inc Memory Board B023095 ____H70

PERFORMANCE TECHNOLOGIES PT-SBS 915 PT-SBS915 BOARD

SBS TECHNOLOGIES 91916460 REV D IP-MP-SERIAL PC BOARD

PERFORMANCE TECHNOLOGIES PT-SBS 915 PT-SBS915 BOARD

Performance Technologies PT-SBS 915 Board

SBS Technologies 1553 Interface Libraries Manual

SBS Technologies MIL-STD-1553 ABI/ASF VME Reference

Creative Technology SBS 10 2 Speakers

Speakers New SoundBlaster Creative Technology SBS10

Advanced Technology SBS4600 Heatshield w/Ghost Ring BL

GE FANUC SBS Technologies 85224036 controller card

SBS TECHNOLOGIES TM-682 BOARD;)

SBS Technologies/Sabre2 CPR03/32-166 cPCI Computer

A75479 SMC Thermo-Con INR-244-602 Chiller

DNS CIRCULATOR 412 200W COAT SMC 2-39-53863 INR-244-412

TEL CABLE,EXT INR-244-115A-6 MAR CT1380-100444-1?2