1771-OFE2ABB1771-OFE21771-OFE2ABB1771-OFE2
PLC控制系統(tǒng)與繼電器控制系統(tǒng)的區(qū)別 ：
⑴ 組成器件不同：繼電器控制線路是許多真正的硬件繼電器組成，而梯形圖則由許多所謂“軟繼電器”組成。
⑵ 觸點(diǎn)數(shù)量不同：硬繼電器的觸點(diǎn)數(shù)量有限，用于控制的繼電器的觸 點(diǎn)數(shù)一般只有4～8對(duì)；而梯形圖中每個(gè)“軟繼電器”供編程使用的觸點(diǎn)數(shù)有無限對(duì)。
⑶ 實(shí)施控制的方法不同：在繼電器控制線路中，實(shí)現(xiàn)某種控制是通過各種繼電器之間硬接線解決的。而PLC控制是通過梯形圖即軟件編 程解決的。
⑷ 工作方式不同：在繼電器控制線路中，采用并行工作方式；而在梯形圖的控制線路中，采用串行工作方式。
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鄭娟萍
廈門仲鑫航自動(dòng)化設(shè)備有限公司
1.3 PLC可編程控制器的基本組成
PLC種類繁多，功能雖然多種多樣，但其組成結(jié)構(gòu)和工作原理基本相同。PLC的控制系統(tǒng)由硬件和軟件兩大部分組成，硬件指PLC本身及其外圍設(shè)備，軟件是指管理PLC的系統(tǒng)軟件和PLC的應(yīng)用程序
1.3.1 PLC的硬件系統(tǒng)組成
PLC實(shí)質(zhì)上是一種工業(yè)控制計(jì)算機(jī)，PLC與計(jì)算機(jī)的組成十分相似。只不過它比一般的計(jì)算機(jī)具有更強(qiáng)的與工業(yè)過程相連接的接口，以及更直接的適應(yīng)控制要求的編程語言。從硬件結(jié)構(gòu)看，它由CPU、存儲(chǔ)器、輸入/輸出接口、電源等組成。PLC的基本組成框圖如圖1所示。下面對(duì)PLC控制系統(tǒng)的主要硬件部分進(jìn)行介紹。
ROBOTRON 580-2-0014-01 SERIES 8000 ASSEMBLY CONTROL ***NNB***
ROBOTRON 580-2-0014-01 SERIES 8000 ASSEMBLY CONTROL ***NIB***
BUSSMAN/OPTIMA OPM-1038RC OVERCURRENT PROTECTION MODULE ***NIB***
AMCI/ADVANCED MICRO CONTROLS 1761H INTERFACE MODULE ***NIB***
STI 70035-1001/VS65-A001-AC1 VALUSCAN VS6500 ***XLNT***
FEC AFC1500 SAN-12II AXIS CONTROLLER ***XLNT***
BOSTON GEAR/FINCOR 6404S0103A 6400 10HP AC MOTOR CONTROL ***NNB***
DIAMOND AUTOMATION 1262-693-S-T-DC-0 1267960228 ***XLNT***
MERLIN GERIN/SQUARE D CKAD36008SA2UODEKKDO/CK800NA MOLDED CASE SWITCH 800A *NIB*
MERLIN GERIN CK1200NA MOLDED CASE SWITCH 1200A 600V ***NNB***
TACO MPV 030-4/MPV030-4 3" MULTI-PURPOSE VALVE ***XLNT***
GENERAL SIGNAL HS14F2BS TRANSFORMER 2KVA 2:1RATIO ***XLNT***
MINARIK 507-02-126/BISON 32-999-2904-004 GEARMOTOR ***XLNT***
PACIFIC SCIENTIFIC PFC-01-05-02-030 FEEDBACK CABLE ***NNB***
PACIFIC SCIENTIFIC PFC-01-05-02-025 FEEDBACK CABLE ***NNB***
GE FANUC IC693ACC335/IC693ACC335A AXIS TERMINAL ***XLNT***
RELIANCE 0-56919-100C/056919100C/O-56919-100C SP500 CAPACITOR BOARD ***XLNT***
RELIANCE 0-56954-310AA/056954310AA/O-56954-310AA SP500 REGULATOR/CONTROL BD*XLNT
GE FANUC IC200ALG430C ANALOG MIXED MODULE ***XLNT***
GE FANUC IC754CSL06CTD-HF OPERATOR INTERFACE ***XLNT***
OMRON D4A LIMIT SWITCH D4A-0100/D4A-1000/D4A-0005 ***XLNT***
BONFIGLIOLI MAS 25/P GEARHEAD ***NNB***
SEW-EURODRIVE DFT71D4BM605HF/R60DT71D4BM605HF GEARMOTOR ***NNB***
PRAB CONVEYORS GOLD BMQ220-2 WORM SPEED REDUCER 20 ***XLNT***
HUB CITY 0220-60783-180 WORM GEAR 180V 10/1 BL ***XLNT***
BOSTON GEAR DORNER 22-010R-4 F7105SVB4G6 RIGHT ANGLE GEAR HEAD 5:1 ***NNB***
AOKI SEIMITSU KOGYO XW11-RLM DUAL SHAFT GEARMOTOR **NNB**
DODGE/APG M059165002TZ 07916358BJ M85715 56TM2A GEARMOTOR 0.55HP 86.5 ***NNB***
WARNER 5370-273-065/EUM180-1020 CLUTCH/BRAKE ***XLNT***
ORIENTAL MOTORS 5GCH100KB GEARHEAD 100:1 RATIO ***NNB***
ORIENTAL MOTORS 4GC15K GEAR HEAD (15:1) RATIO ***NNB***
FUJI ELECTRIC VFC308A RING BLOWER ***NNB***
SMC VZ5120 SOLENOID VALVE ***XLNT***
TOTAL CONTROL QPI-ABR-201 A/B DATAHIWAY PLUS ***XLNT***
TOYOZUMI CHD-7.5S TRANSFORMER CAP, 750VA ***NNB***
SMC CM2C25-50 DOUBLE ACTING CYLINDER ***NIB***
SMC VQ1140-5LO-C0 VALVE, SGL, FLIP N/PLUG-IN (DC) ***NNB***
OMRON NT600M-MR151 MEMORY CARD 128K RAM ***NIB***
OMRON CVM1-CPU11-EV2 PROGRAMMABLE CONTROLLER ***XLNT***
SMC VV5Q21-03C6FU0 MANIFOLD, PLUG-IN, VQ2000 ***NIB***
OMRON V600-A CABLE ***NNB***
FUJI SZ-AR AUXILIARY CONTACTS (LOT OF 4) ***NNB***
FUJI SW-03/3H 1.4-2.2AMP 3PHASE STARTER 220VAC COIL ***NNB***
IDEC/IZUMI ABW211-R/41-10650 PUSHBUTTON RED ***NIB***
SMC VVQ2000-4-1 END PLATE COVERS (LOT OF 60) ***NNB***
IDEC ABW211-B/41-10650 PUSHBUTTON BLACK ***NIB***
IDEC ABW211-W/41-10650 PUSHBUTTON WHITE ***NIB***
IDEC SLC30N-0110-DD2FB-R(10) DISPLAY LIGHTS ***NNB***
IDEC SLC30N-0110-DD2FB-R(10) DISPLAY LIGHTS ***NIB***
FUJI AH30-FX01 PUSHBUTTON FLUSH RED, GREEN & BLACK ***NIB***
SMC CQ2B12-5DM COMPACT CYLINDER ***NNB***
SMC CQ2B12-5DM COMPACT CYLINDER ***NIB***
SMC CDM2U20-50-H7B-50 CYL, RND BODY, AUTO-SW ***NNB***
SMC CDM2U20-50-H7B-50 CYL, RND BODY, AUTO-SW ***NIB***
DIGITAL/HMI GP230-IS11-0 CABLE RS422 5METER ***NIB***
SMC CDQ2A25-20DCM-J7 COMPACT CYLINDER ***NNB***
SMC CDQ2A25-20DCM COMPACT CYLINDER ***NNB***
OMRON G730-VID16-B 24VDC REMOTE INPUT TERMINAL***NIB***
OMRON G730-VID16 24VDC REMOTE INPUT TERMINAL ***NIB***
OMRON 3G5A2-C0002 2PCS,OPT.CONN.B;8M TO 20 ***NIB***
SYLVANIA FB-R30 INDOOR REFLECTOR LIGHT 75W 125-130V (LOT OF 3) ***NIB***
GE GENERAL ELECTRIC R-40 INDOOR FLOODLIGHT 120W 1600L 2000HRS (LOT OF 4) **NIB**
HH FLUORESCENT FE1226-SW LAMP HOLDER SOCKET 660W 600V (BOX OF 10) ***NIB***
SYLVANIA FP21/841 FLUORESCENT LIGHT BULBS PENTRON 4100K 21W (BOX OF 40) **NIB**
WAGNER H4703 HALOGEN HEADLAMP LOW BEAM ***NIB***
KIM LIGHTING AR3/400HPS PARKING LOT FLOOD LIGHT 400HPS WITHOUT BALLAST ***NNB***
HIGH PERFECTION LF1048-160-C0350-010V/20-3947 BALLAST **NNB**
JUNO TM570N-WH TRAC-MASTER BALLAST ***NIB***
LITHONIA BETA LIGHTING BBA540C3-M1 LIGHT FIXTURE 400W ***NIB***
LITHONIA DEG24 REPLACEMENT DIFFUSER 2' ***NIB***
GE GENERAL ELECTRIC F32T8/SP35/ECO FLUORESCENT LAMPS (BOX OF 36) ***NIB***
LITHONIA LIGHTING EU2 EMERGENCY LIGHT 120VAC 6.7W W/ RECHARGEABLE BATTERY *XLNT*
SYLVANIA QTP1X32T8/UNV ISN-SC BALLAST 120/277V 50/60HZ W/METAL CASE ****NNB****
PAYNE SPARKMAN CL400S-ND-WG DOME LIGHTING FIXTURE W/ WIRE GUARD ***NNB***
PAYNE SPARKMAN CL400S-ND-WG DOME LIGHTING FIXTURE W/ WIRE GUARD ***NNB***
PAYNE SPARKMAN CL400S-ND-WG DOME LIGHTING FIXTURE W/ WIRE GUARD ***NNB***
GE GENERAL ELECTRIC FG-G07E2 400 WATT 22 INCH DOME LIGHT **NIB**
GENERAL ELECTRIC F40/30BX/SPX30 16953 FLUORESCENT LIGHT (LOT OF 3) ***NIB***
GE GENERAL ELECTRIC FG-G11E2Q 400 WATT 22 INCH DOME LIGHT **NIB**
GE GENERAL ELECTRIC FG-G11E2Q 400 WATT 22 INCH DOME LIGHT **XLNT**
DAY-BRITE 2SM232-FS21-120 LIGHT FIXTURE FLUORESCENT LUMINAIRE 48X4X24-1/4 *NNB*
KIM LIGHTING SAR4/175MH 175W PARKING LOT FLOOD LIGHT ***NNB***
BEGA U.S. B8750 RECESSED ADJUSTABLE OUTDOOR LIGHT FIXTURE 227V 60HZ ***NNB***
DAMAR 26564A LIGHT BULB 320 WATT 4000K (LOT OF 2) ***NIB***
VENTURE MH 1000W/U ENCLOSED RATED LAMP ***NNB***
GE LU400 LUCALOX 400W HIGH PRESSURE SODIUM LAMP(LOT OF 3) ***NIB***
GE F32TBX/835/A/ECO ENERGY SAVING FLUORESCENT LAMP 32W 4 PIN (LOT OF 4) **NIB**
GE F32TBX/835/A/ECO ENERGY SAVING FLUORESCENT LAMP 32W 4 PIN (LOT OF 3) **NIB**
GE LU400 LUCALOX 400W HIGH PRESSURE SODIUM LAMP (LOT OF 3) ***NNB***
SYLVANIA CF26DD/830 FLUORESCENT LAMP 26W (LOT OF 4) ***NIB***
