2711P-T7C4A9

2711P-T7C4A9

2711P-T7C4A9在这以直流斩波器说明PWM概念，电机系统的原理图和电压波形如下图所示。当开关S导通时，直流电源电压Us加到电动机上，当S关断时，直流电源与电机脱开，电动机电枢电流经续流二极管VD续流，电机两端电压接近于零。如此反复，电枢端电压波形如右图所示，好像是电源电压Us在ton时间内被接通，又在T-ton时间内被斩断，故称为“斩波”。

2711P-T7C4A9

ALLEN BRADLEY PANELVIEW 550 2711-K5A5 SER. C

85-264VAC / 50-60HZ

ALLEN BRADLEY 2106B-BABD BUCKET FOR BULLETIN 2100 MCC

Allen Bradley Size 0 Starter Cat# 509-AOD Used

Allen Bradley Size 4 Starter Cat# 509-EOD Used

 Allen Bradley 855T Control Tower Base + Amber Light

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Allen-Bradley 709TAA-K Size 00 Automatic Motor Starter!

ALLEN BRADLEY 2112B-ZABD BUCKET FOR BULLETIN 2100 MCC

ALLEN BRADLEY 2112B-CAB BUCKET FOR BULLETIN 2100 MCC

Explosion Proof Allen-Bradley Size 4 Starter 150A Combo

Allen Bradley Motor Starter 140-MN-1600 Used

193-CPC45 Allen-Bradley 30-45A Overload Relay!

In Good Shape! Clean & Tested!

25 Allen Bradley Carbon Comp Resistors 4.7k 2W 10%

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(3) Allen Bradley Circuit Breaker 1492-CB2 1492-CB3

ALLEN BRADLEY 15HP AC INVERTER DRIVE 1336S-B015-AE-EN4

ALLEN BRADLEY 15HP AC INVERTER DRIVE 1336S-B015-AE-EN4

ALLEN BRADLEY (1771-VHSC) HIGH SPEED COUNTER MODULE

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Allen Bradley DPDT 24V 10A RELAY 700-HB32Z24-4 --

ALLEN BRADLEY 2711-NM2 EPROM MEMORY CHIP SET 

ALLEN BRADLEY CIRCUIT BREAKER. 1492-CB1, SER C

Allen Bradley SLC500 Input Module 1746-IB16 Ser C

ALLEN BRADLEY 1747-L20C PLC SLC 500 PROCESSER 1747L20C

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ALLEN BRADLEY AC SERVO CONTROLLER AXIS MODULE 3KW 

CAT. 394C-AM04

ALLEN BRADLEY AC SERVO CONTROLLER AXIS MODULE 3KW 

CAT. 394-AM04  IN BOX

ALLEN BRADLEY AC SERVO CONTROLLER AXIS MODULE 2KW 

CAT. 394C-AM03  IN BOX

ALLEN BRADLEY CONTROL RELAY. 700-CF400Z* SERIES A

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* SEALED* Allen Bradley 1746-NT8 /A 1746NT8

** Allen Bradley 20BD065A0AYNANC0 PowerFlex 700 50HP

** Allen Bradley 20BD052A0AYNANC0 PowerFlex 700 40HP

60 DAYS WARRANTY! / 480VAC,3PH,52 Amps,40 HP +  HIM!

** Allen Bradley 1746-BAS-T /A 1746BAST Basic Module

60 DAYS WARRANTY! / Basic Module (High Speed)

* SEALED* Allen Bradley 1746-NIO4V /A 1746NIO4V Qty

60 DAYS WARRANTY! / (2) Analog Input, (2) Analog Output

Allen Bradley 160-BA10NPS1P1 "TESTED" 5HP Drive

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Allen Bradley Indicator Lamp 800AL Red Green Orange A-B

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Allen Bradley 1747-L551 /A 1747L551 SLC 5/05 Controller

 ALLEN BRADLEY DC DRIVE MOTOR CONTROLLER 1365-PAF A

Allen Bradley NEMA 1 509-BOD Motor Starter with reset

! Sealed Allen Bradley PowerFlex 70 Motor Drive

Latest REV 2009 Date Code 20AD8P0A3AYNNNC0

** Allen Bradley AB 42FT-F2LPA-A2 /A Photoswitch Qty

42FT SELF TEACH FIBEROPTC

WH-1043 ALLEN BRADLEY ENCLOSURE 712-BAB24 120-600V 1

** Allen Bradley AB 42FT-F2LPA-A2 /A Photoswitch

42FT SELF TEACH FIBEROPTC

** Allen Bradley AB 42FT-F2LPA-A2 /A Photoswitch

42FT SELF TEACH FIBEROPTC

** Allen Bradley AB 43PR-NDS59FS /A 43PRNDS59FS

Fiber Optic Cable, Plastic / 60 DAYS WARRANTY!

ALLEN BRADLEY 512-AAB-24 NEMA COMBINATION STARTER 480V

ALLEN BRADLEY CB236 CB-236 COIL 110/120V 50/60HZ

Allen Bradley 1746-INT4 Isolated Thermocouple Input

2W 22M ohm 10% Carbon Comp Resistors Allen Bradley (10)

2W 820K ohm 10% Carbon Comp Resistors Allen Bradley (10

2W 820K ohm 10% Carbon Comp Resistors Allen Bradley (5)

50 Allen Bradley Carbon Comp Resistors 1k 1/2W 10%

Allen Bradley CAT 140-MN-0100 motor starter, breaker

Allen Bradley 512-BJB-6P-24 Combination Starter ()

 Allen Bradley 40793-449-01 Accessory For Bul. 193

ALLEN BRADLEY 2-SLOT EXPANSION RACK FOR FIXED I/O UNIT!

ALLEN BRADLEY 1492-WG10 1492WG10 1492 D57826-01 (NIB)

AB TERMINAL BLOCK BLOCKS GROUND

Allen Bradley 1336 Plus II 1336F-BRF200-AAEN  no box

Allen Bradley 1770-CW2 1770 CW2 NIB Interconnect Cable

Allen Bradley AB 2707-MVH232 /A 2707MVH232 MicroView

*FS* Allen Bradley 20BD065A3AYNANC0 PowerFlex 700 50HP

Allen Bradley 1747-CP3 PLC SLC 5/04 5/03 (7ft - 5 QTY)

Allen-Bradley IMC110 Motion control mod. 1746-HS Ser A

Allen Bradley 1771-IVN 1771IVN Input Module(s) NIB