6ES7314-6CH04-0AB0
直流伺服電動機的轉速控制通常採用脈寬調制 PWM方式，如左圖所示，方波控制信號Vb控制晶體管VT的通斷，也就是控制電源電壓的通斷。Vb 為高電平時，晶體管VT導通，電源電壓施加在電動機上，產生電流im。由於電動機的繞組是感性負載，電流im有一個上升過程。Vb為低電平時，晶體管VT斷開，電源電壓斷開，但是電動機繞組中存儲的電能釋放出來，產生電流 im，電流 im 有一個下降的過程。
佔空比就是在一段連續工作時間內脈衝（高電平）佔用的時間與總時間的比值。直流電動機就是靠控制脈衝信號的佔空比來調速的。當控制脈衝信號的佔空比是60%時，也就是高電平佔總時間的 60%時，施加在電動機定子繞組上的平均電壓是 0.6U，當係統穩定運行時，電動機繞組中的電流平均值也是峰值的0.6。顯然控制信號的佔空比決定了施加在電動機上的平均電流和平均電壓，也就控制了電動機的轉速。無刷直流電動機的電流曲
XYCOM 2050 USPP 2050
XYCOM 9462-0163040016014 USPP 9462016304001601
XYCOM 9462-0163140015003 USPP 9462016314001500
XYCOM VMEBUS FAIN XVME-566 **
XYCOM VMEBUS AOUT XVME-530 **
Xycom Touch Screen Control / Monitor, Mod# 9465 KPM
XYCOM 9460 INDUSTRIAL PC/INTERFACE 115/230V ***XLNT***
XYCOM 3410T-513364-B NSFP 3410T513364B
XYCOM PRO-FACE OPERATOR INTERFACE 3715-KPM 5-AMP
Xycom Industrial Monitor w/Touch Screen FREE SHIPPING
Xycom Industrial Panel w/Touch Screen FREE SHIPPING
Xycom Industrial Panel with Touch Screen FREE SHIPPING
Xycom 9460
XYCOM XVME-531 USPP XVME531
XYCOM PRO-FACE OPERATOR INTERFACE 3715-KPM 5-AMP
Xycom 9465 KPM Industrial Flat Panel 9465KPM
XYCOM 3115-1200-512-2K USPP 311512005122K
XYCOM 5100-0103000000000 USPP 5100010300000000
XYCOM 70957-014 USPP 70957014
XYCOM 9460 INDUSTRIAL PC/INTERFACE 115/230V ***XLNT***
XYCOM Operator Control M/N2005 S/N 422603-4C4
XYCOM Operator Control M/N2000T S/N 487347-3A5
XYCOM MODEL 4117T PANELVIEW 4117-0000000002001 *NICE*
XYCOM XVME684 USPP XVME684
CRITERION 500 SYSTEM 3512KPT XYCOM
Xycom Proface Workstation Part# 3112-T
XYCOM 9450-27B1319010000
Xycom 9460 10" Flat Panel LCD Operator PC Interface
Xycom 3410KP Industrial Interface Panel 3410 KP *Test*
Xycom Monitor PM9403T 115/230 Volt #26344
XYCOM 3406-0000010000000 USPP 3406000001000000
4810 XYCOM RAC-PAC TERMINAL
XYCOM 70675-098 USPP 70675098
XYCOM 9462-0163040011004 OPERATOR INTERFACE PANEL
XYCOM 9460KP USPP 9460KP
XYCOM 9460 Touch Screen Computer Opt 723364-TFT-T-B
XYCOM VME-70661-714 USPP VME70661714
XYCOM 143635 NSFP 143635
XYCOM PANEL OPERATOR INTERFACE 9450 9450-29H432G010000
XYCOM 9406-ACT/9406ACT INDUSTRIAL COMPUTER PANEL*XLNT*
Xycom 9450 Industrial Computer Free Shipping
Xycom 9485 Monitor Free Shipping
Xycom automation industrial PC 1500 computer rack
Xycom 4810E IT Operator Terminal #25490
XYCOM 9460-513316-STN-T-F-A NSPP 9460513316STNTFA
XYCOM 143635 USPP 143635
PROFACE/PRO-FACE/DIGITAL/XYCOM GP430-EG11 GRAPHIC PANEL
XYCOM PANEL OPERATOR INTERFACE 9450 9450-0486614010000
Xycom 5015T Pro-face 15" LCD Touchscreen Monitor *NICE*
Xycom 4850 LCD Upgrade Kit
XYCOM XVME-686 USPP XVME686
Xycom 2050 LCD Upgrade Kit
XYCOM 3510-03L114003101L USPP 351003L114003101
Xycom PCB 1805 Board 81987-001-D 81625DA NNB
XYCOM GP370-SC31-24V USPP GP370SC3124V
Xycom Flat Panel Industrial Touch Monitor 5019T
XYCOM 2005 *NICE*
XYCOM 4810E IT TERMINAL *NICE*
XYCOM 3406 KPT 3406-0000010000001 HMI-SH316-PE
XYCOM VMEBUS BOARD XVME-957 **
XYCOM 3510 PANEL VIEW 3510-01F004003101L *NICE*
XYCOM XVME 977 HARD DRIVE & DISKETT CONTROL BOARD VME
Xycom 9460 Industrial PC Interface Operator Panel Xycom
Xycom XVME-660 VMEbus Pentium III Processor Module
XYCOM 71674A-100 Eskofot 073-003-000 073-039-000
Xycom 1510-30A7115028000
Xycom 3510-0104140012006 Operator Interface 513332-F-A
Xycom 3510 T 0104140012008 Operator Interface 513332-FA