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順序控制系統(tǒng)的特點(diǎn)及設(shè)計(jì)思路1．特點(diǎn)順序控制系統(tǒng)是指按照預(yù)定的受控執(zhí)行機(jī)構(gòu)動(dòng)作順序及相應(yīng)的轉(zhuǎn)步條件，一步一步進(jìn)行的自動(dòng)控制系統(tǒng)。其受控設(shè)備通常是動(dòng)作順序不變或相對(duì)固定的生產(chǎn)機(jī)械。這種控制系統(tǒng)的轉(zhuǎn)步主令信號(hào)大多數(shù)是行程開關(guān)（包括有觸點(diǎn)或無觸點(diǎn)行程開關(guān)、光電開關(guān)、干簧管開關(guān)、霍爾元件開關(guān)等位置檢測(cè)開關(guān)），有時(shí)也采用壓力繼電器、時(shí)間繼電器之類的信號(hào)轉(zhuǎn)換元件作為某些步的轉(zhuǎn)步主令信號(hào)。為了使順序控制系統(tǒng)工作可靠，通常采用步進(jìn)式順序控制電路結(jié)構(gòu)。所謂步進(jìn)式順序控制，是指控制系統(tǒng)的任一程序步（以下簡(jiǎn)稱步）的得電必須以前一步的得電并且本步的轉(zhuǎn)步主令信號(hào)已發(fā)出為條件。對(duì)生產(chǎn)機(jī)械而言，受控設(shè)備任一步的機(jī)械動(dòng)作是否執(zhí)行，取決于控制系統(tǒng)前一步是否已有輸出信號(hào)及其受控機(jī)械動(dòng)作是否已完成。若前一步的動(dòng)作未完成，則后一步的動(dòng)作無法執(zhí)行。這種控制系統(tǒng)的互鎖嚴(yán)密，即便轉(zhuǎn)步主令信號(hào)元件失靈或出現(xiàn)誤操作，亦不會(huì)導(dǎo)致動(dòng)作順序錯(cuò)亂。2．設(shè)計(jì)思路本文提出的4種簡(jiǎn)易設(shè)計(jì)方法都是先設(shè)計(jì)步進(jìn)階梯，在步進(jìn)階梯實(shí)現(xiàn)由轉(zhuǎn)步主令信號(hào)控制輔助繼電器得失電；然后根據(jù)步進(jìn)階梯設(shè)計(jì)輸出階梯，在輸出階梯實(shí)現(xiàn)由輔助繼電器控制輸出繼電器得失電。這4種設(shè)計(jì)法所設(shè)計(jì)的梯形圖電路結(jié)構(gòu)及相應(yīng)的指令應(yīng)適用于大多數(shù)PLC機(jī)型，具有通用性。由于各種PLC機(jī)型的編程元件代號(hào)及其編號(hào)不盡相同，為便于闡述，本文約定：所有梯形圖中的輸入繼電器、輸出繼電器、輔助繼電器（又稱內(nèi)部繼電器）的代號(hào)分別為：X、Y、M。設(shè)計(jì)中所用到的某些功能指令，如置位指令約定為S×，復(fù)位指令為R×；移位指指令為SR×。其中的“×”表示編程元件的編號(hào)，用十進(jìn)制數(shù)表示。用這些方法設(shè)計(jì)實(shí)際的控制系統(tǒng)時(shí)，應(yīng)將編程元件代號(hào)和編號(hào)變換成所選用的PLC機(jī)型對(duì)應(yīng)的代號(hào)和編號(hào)。

下面分別介紹各種設(shè)計(jì)方法。其中，前3種方法的設(shè)計(jì)依據(jù)都是圖1所示的順序控制流程。圖中，步1的轉(zhuǎn)步主令信號(hào)X0為連接啟動(dòng)按鈕的輸入繼電器（為簡(jiǎn)明起見，后述的轉(zhuǎn)步主令信號(hào)均省去“輸入繼電器”幾個(gè)字，只提輸入信號(hào)），X1為原位開關(guān)信號(hào)，X2、X3、X4分別為步2、3、4的轉(zhuǎn)步主令開關(guān)信號(hào)。M1～M5分別為各步的受控輔助繼電器。Y1～Y4分別為各步受控的輸出繼電器。逐步得電同步失電型步進(jìn)順序控制系統(tǒng)設(shè)計(jì)法如圖2所示，這種設(shè)計(jì)方法是根據(jù)“與”、“或”、“非”的基本邏輯關(guān)系，設(shè)計(jì)成串聯(lián)、并聯(lián)或串、并聯(lián)復(fù)合的電路結(jié)構(gòu)。 

Allen Bradley AC Servo Motor, 1326AB-B530E-21?

CEM Servo Motor, FDE T5C3B A5983 11/85 Off a Sharnoa SDC 40D

Mitsubishi AC Spindle Drive Motor, SJ-5.5 A, Mazak VQC 15/40

Mitsubishi Permanent Magnet AC Servo Motor, HA100CS, w/Encoder

Reliance AC Servo Motor, 1326AB-B520F-21?-K5

GE Fanuc O, AC Servo Motor A06B-0513-B002

Fanuc Model 10 AC Servo Motor, A06B-0501-B002, 2000 RPM

Fuji 7.5 kW 3-Phase Induction Spindle Drive Motor, TypeMPF2135G, 200V

Siemens Brushless Servo Motor, 1FT5064-0AC71-1?-Z

Okuma MC-4VA BL-Motor BL-H100E-12S, 1200 RPM, w/ Encoder

Sanyo BL Super Servo Motor 20BM120MXP

CSR Contraves DC Servo Motor SDA0251-G186 for BridgeportBoss*

SEM DC Servo Motor, MT30U4-36 Off H & H Roberts CNC Machine*

FANUC AC 3 SPINDLE MOTOR A06B-1003-B100, A06B1003B100

CSR Contraves DC Servo Motor SDA0251-G190 for BridgeportBoss*

CSR Contraves DC Servo Motor SDA0251-G141 for BridgeportBoss*

Fanuc 3 AC Spindle Motor, A06B-1003-B100, (2) Used

Yaskawa Cup Servo Motor, UGCMEM-04-MU12, Feedback:TFUE-05ZC7

Mitsubishi 15/18.5 kW Spindle Drive Motor, SE-E-FV * *USED 

Fanuc AC Servo Motor, Model 20F/2000, A06B-0356-B756

Fanuc 10M DC Servo Motor, A06B-0851-B005, 165 V

Mitsubishi 2.0 kW AC Servo Motor, HA100C w/ Encoder

Fanuc AC Servo Motor, Model 20F/2000, A06B-0356-B755

Mitsubishi AC Servo Motor, HA100C w/ 5KN-6-8-108 Encoder

Mitsubishi AC Servo Motor, HA 80CS, HA80C-S, W/ Encoder (2)

Parker / Compumotor Brushless Servo Motor, 606P, 3000 RPM, 230VAC

GE Fanuc Model OS AC Servo Motor, A06B-0313-B606-?R, NOENCODER

GE Fanuc Model OS AC Servo Motor, A06B-0313-B606-?R,A860-0315-T103 

Fanuc AC Servo Motor, Model 22/2000, A06B-0147-B077 7008

GE Fanuc 30F AC Servo Motor, A06B-0357-B756

Parker / Compumotor Brushless Servo Motor, 606, 3000 RPM, 230VAC

GE Fanuc 8F AC Servo Motor, A06B-0348-B356?

GE General Electric Tachometer Generator, 5PY59JY63

GE Fanuc AC Servo Motor, A06B-0146-B675, * *

Yaskawa Minertia Motor Servo Motor, J Series, UGJMED-80MA2SF

Yaskawa Minertia Motor Servo Motor, J Series, UGJMED-80MA20F

Getty's Power Plus DC Servo Motor, 16-5605-04

Indramat Servo Motor, MDC10.20D/MMA-0?, Off a Maho HMC

NEW IN BOX Servo Dynamins Brushed DC Motor -MTS30F4-25, 4000RPM

Yaskawa Cup Servo Motor, UGCMEM-15-MC42

Yaskawa Cup Servo Motor, UGCMEM-15-MC44, TFUE-05ZC7

Sanyo Denki Super Driver Servo Motor, CN-1000-10

Yaskawa AC Spindle Drive Motor, EEVA-51KM, Matsuura MC-500VS

Allen Bradley AC Servo Motor, Cat 1326AB-B410J-21?, 6000/7250RPM,

Allen Bradley AC Servo Motor, Cat 1326AB-B410J-21?-K4, 6000/7250RPM,

Fanuc AC Servo Motor, Model 10S, A06B-0315-B002, w/A860-0304-T112

Fanuc AC Servo Motor, Mod 1/3000, A06B-0371-B575, EncoderA860-0360-T001

GE Fanuc Model OS AC Servo Motor, A06B-0313-B703-?R

GE Fanuc AC Servo Motor, A06B-0501-B755

Fanuc 5-0 AC Servo Motor, A06B-0531-B001

Fanuc AC Servo Motor, Model 6/3000, A06B-0128-B577 7008

GE Fanuc 10 AC Servo Motor, A06B-0501-B756

OKUMA / Sanyo Denki Servo Motor w/ Encoder, CN-800T-21

Allen Bradley AC Servo Motor, 1326AB-A2E-11-A?4 

Fanuc AC Servo Motor, Model 10S, A06B-0315-B002, w/A860-0304-T112

GE Fanuc 5F AC Servo Motor, A06B-0346-B356

Hurco 6 HP Spindle Drive Motor, Hurco 401-6001-018, 90-6300RPM

Glentek DC Servo Motor, P/N 1215, 3500 RPM, 180VDC

Mitsubishi AC Servo Motor, HA 80C-S, HA80C-S W/ Encoder

GE Fanuc AC Servo Motor, A06B-0521-B541

Mitsubishi DC Servo Motor, HD 81-12S, w/ Pick up unit

Yaskawa UGCMEM-04-MC56 Servo Cup Motor, 68 V, 1750 RPM

GE Fanuc 20, AC Servo Motor A06B-0502-B001 (2)

Mitsubishi DC Servo Motor, HD 81-12S, w/Encoder

PowerTron DC Servo Motor, 56LDNSP0S13, 160V, 2300 RPM

Allen Bradley 1326 AC Servo Motor, 1326AB-B2E-11 

Fanuc AC Servo Motor, Mod 10, A06B-0501-B204-

Okuma LC-20 Servo Motor W/D6 Encoder C-800T-25 Warrant

Okuma LC-20 X Axis DC Servo Motor, C-400, 1984 Vintage

Okuma LC-20 Y - Axis DC Servo Motor, C-400, 1984 Vintage

GSS Motor Repair Fanuc 10M DC Servo Motor, A06B-0651-B012

Fanuc 10M DC Servo Motor, A06B-0651-B012

Tachtronic Instruments DC Servo Motor, Mod 43-MT1681-1, 3500 RPMUsed

C S R Contraves DC Servo Motor, (Bridgeport) M/N A2189-G190, P/NFAA2189-G190

C S R Contraves DC Servo Motor, (Bridgeport Series I), 4000RPM

Allen Bradley AC Servo Motor, 1326AB-B720E-M2?LS, Motor Said ToBe BAD. AS IS

GE Fanuc 8F AC Servo Motor, A06B-0348-B357

GE Fanuc 5F AC Servo Motor, A06B-0346-B357

Toyoda BL Super Servo Motor, 20BM090BBDT7, Rev 4, Absosyn

Mitsubishi DC Servo Motor, HD 101-12, w/ Pick up unitTT-A-11

GE Fanuc AC Servo Motor, A06B-0502-B755

Reliance Electric 1-1/2 HP DC Motor, T16G3015N-OD, w/ SpeedReducer

Reliance Electric 1-1/2 HP DC Motor, T16G3015N-OD, w/ TigearReducer

Nachi AC Servo Motor, MSMA302D7V3, 3.0kW, 3000 RPM 

Siemens Servo Motor, 1 FT5072-1AF71-1F?G0, Encoder Missing

Okuma Servo Motor BL-H50-20T, Encoder OSP

I-R Ingersoll Rand DC Servo Gear Motor, 3340T, 93971398

Baldor Permanent Magnet Servomotor, MT-4070-FL-5Z

Nachi AC Servo Motor, MSM082H4D, 750W

Rapidsyn / Dana DC Servo Motor, 100252C-01, 2500 RPM

Gould Series 600 AC Servo Motor, USACED-05AA1X

Fuji Electric Geared Induction Motor, 7.5 kW, PST152G10A, **

OKUMA / Sanyo Denki Servo Motor w/ Encoder, C-400-25

Okuma Servo Motor BL-80E-20T, Encoder Okuma ,OSP

Nachi AC Servo Motor, Type MSM082H3D, 750W, ** WARRANTY **

Okuma Servo Motor BL-80E-20T, Encoder ABS-FB-D2048

ABB Robotics Servo Motor, 1 FT3101-5AZ21-9-?Z

Okuma Servo Motor BL-80E-20T, Encoder ER-FC-2048C

GE Fanuc AC Servo Motor, A06B-0522-B543?

Fanuc 3-0S Robot AC Servo Motor A06B-0533-B572

Fanuc AC Servo Motor, Model 10, A06B-0501-B751

Nachi AC Servo Motor, MSM082H3D, 750W, Cut Wires