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廈門岳航計算機(jī)工程有限公司       

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廈門市思明區(qū)湖濱東路湖光大廈8樓A座
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 PLC是現(xiàn)代工業(yè)的三大支柱之一，是可靠性高、應(yīng)用非常廣泛的工業(yè)控制產(chǎn)品。在中大型模塊化的PLC產(chǎn)品中，CPU模塊（中央處理器）是PLC的中心。一些重大的工業(yè)生產(chǎn)線往往要求連續(xù)運(yùn)行不能停頓，而可靠性再高的PLC也不能保證故障為零，因此，雙CPU的冗余控制是一種滿足連續(xù)生產(chǎn)要求、提高系統(tǒng)可用性的有效手段。下面以熔鹽爐自控系統(tǒng)為實例詳述雙CPU冗余控制的實現(xiàn)方法。
一、熔鹽爐自動系統(tǒng)綜述
熔鹽爐自控系統(tǒng)是一水硬鋁管道化溶出生產(chǎn)線上的重要環(huán)節(jié)，控制熔鹽的加熱和循環(huán)，用熔鹽的熱量去循環(huán)加熱鋁礦石漿。鋁礦石漿的加熱至關(guān)重要，影響*終產(chǎn)品—氧化鋁的質(zhì)量和產(chǎn)量，因此，熔鹽的溫度控制和循環(huán)控制非常重要。
由于熔鹽爐系統(tǒng)在管道化工程中的重要性，同時考慮到熔鹽是一種活躍的化學(xué)品，在不同的溫度下有不同的形態(tài)，低溫下凝固，高溫下不穩(wěn)定會發(fā)生化學(xué)反應(yīng)，從而腐蝕管壁甚至于爆炸，所以安全、可靠、操作簡便和自動化管理是系統(tǒng)設(shè)計的關(guān)鍵，因此考慮用一套雙CPU冗余的PLC、兩套工控機(jī)、高質(zhì)量的傳感器、變送器和執(zhí)行機(jī)構(gòu)來控制兩臺1200萬大卡的熔鹽爐、一臺鹽泵、一組鹽閥、一個熔鹽槽和其他相關(guān)設(shè)備，實現(xiàn)熔鹽的加熱和循環(huán)過程自動化、計算機(jī)操作、監(jiān)控和管理的自動化控制。

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ALLEN BRADLEY 1485AS-T1N5 SERIES A DEVICE NET FEMALE TERMINATOR
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ALLEN BRADLEY 1485R-P3N5-M5 SERIES A CORDSET5 POLEMINIFAST

ALLEN BRADLEY 1492-CB1 G 005 SERIES B CIRCUIT BREAKER 1 POLE0.5 AMP

ALLEN BRADLEY 1492-CB1-F200 SERIES C CIRCUIT BREAKER277VAC20AMP

ALLEN BRADLEY 1492-CB1-G160 SERIES B CIRCUIT BREAKER240V16ASERI

ALLEN BRADLEY 1492-GHD100F SERIES A CIRCUIT BREAKER10AMP250VAC

ALLEN BRADLEY 1492-GHD100F SERIES A CIRCUIT BREAKER10AMP250VAC

ALLEN BRADLEY 800E-2DL3A PUSH BUTTON LATCH MOUNTFULL VOLTAGEAMBER

ALLEN BRADLEY 800EM-F2 SERIES A FLUSH PUSH BUTTONBLACK

ALLEN BRADLEY 800EM-M2 PUSH BUTTON OPERATOR MUSHROOM BLACK

ALLEN BRADLEY 802T-W2A SERIES B ROLLER LEVER ADJUSTABLE NYLON

ALLEN BRADLEY 871A-TS5-NM3 CABLE TERMINAL CHAMBER 5 POLE MINI MALE

ALLEN BRADLEY 1489-A1C080 SERIES A 1 POLE CIRCUIT BREAKER 277V

ALLEN BRADLEY 1492-FB2J30-L SERIES B CLASS J FUSES ONLY 30 AMP 600V

ALLEN BRADLEY 800FP-P0PN3Y SERIES A AMBER PLASTIC PILOT LIGHT 24 VAC

ALLEN BRADLEY 800FP-P0PN3Y SERIES A AMBER PLASTIC PILOT LIGHT 24 VAC

ALLEN BRADLEY 599-KD4 SERIES C SURGE SURPRESSOR 120VAC

ALLEN BRADLEY 100-MC SERIES B AUXILIARY CONTACT SIDE MOUNT 600VAC MAX

ALLEN BRADLEY 100-SAL11 SERIES B AUXILIARY CONTACT BLOCK SIDE MOUNT

ALLEN BRADLEY 800FM-F6MQ11 SERIES A BLUE PUSH BUTTON

ALLEN BRADLEY 1489-A1CO20 SERIES A UL 489 MINIATURE CIRCUIT

ALLEN BRADLEY 100-FA40 CONTACT BLOCK 600V A.C MAX10AFRONT MOUNT

ALLEN BRADLEY 1485C-P2N5-M5 CORD SET5 POLEMICRO FASTMALE/FEMALE

ALLEN BRADLEY 800T-PSDT16 PILOT LIGHTSMALLDUAL INPUT50/60HZ

ALLEN BRADLEY 855E-BVMC STACK LIGHTBASEVERTICAL MOUNTWITH CAP

ALLEN BRADLEY 855E-BVMC STACK LIGHTBASEVERTICAL MOUNTWITH CAP

ALLEN BRADLEY 889D-F4WEDM-2 SERIES B CORD SET4 POLEMICRO

ALLEN BRADLEY 889D-F4WEDM-3 CORD SET4 POLEMICROMALE/FEMALE

ALLEN BRADLEY 889N-F4AFNM-3 CORDSETDEVICENETMINI4 POLE

ALLEN BRADLEY 100-FA31* SERIES A

ALLEN BRADLEY 1492-SP1D020 SERIES C

ALLEN BRADLEY 1492-SP1D100 SUPPLEMENTARY PROTECTORS SERIES C

ALLEN BRADLEY 800FM-MT44 SERIES A PUSH BUTTON

ALLEN BRADLEY 1489-A1C005 SERIES A MINI CIRCUIT BREAKER 1 POLE .5 AMP

ALLEN BRADLEY 1489-A1C005 SERIES A MINI CIRCUIT BREAKER 1 POLE .5 AMP

ALLEN BRADLEY 800T-XAV SERIES D LOW VOLTAGE CONTACT BLOCK

ALLEN BRADLEY 800T-N62A SERIES B LED CLUSTER LAMP PILOT LIGHT

ALLEN BRADLEY 800T-N62A SERIES C LED 24VAC/DC PILOT LIGHT ACCESSORY

ALLEN BRADLEY 800T-N62A SERIES C LED 24VAC/DC PILOT LIGHT ACCESSORY

ALLEN BRADLEY 855E-BCBC SERIES A CONTROL TOWER STACK LIGHT MOUNTINGSEE DESC

ALLEN BRADLEY 800T-N319A SERIES C PILOT LIGHT ACCESSORY 24 VOLT AMBER

ALLEN BRADLEY 855E-BCB SERIES A TOWER STACK LIGHT MOUNTING BASE

ALLEN BRADLEY 800T-N319FG SERIES C PILOT LIGHT ACCESSORY 24 VOLT LED

ALLEN BRADLEY 800T-N314 SERIES A

ALLEN BRADLEY 800T-QH24G SERIES T PILOT LIGHT TYPE 4/13 24V AC/DC

ALLEN BRADLEY 800T-H2 WITH ATTACHED PART NUMBER 800T-XD1

ALLEN BRADLEY 800T-QTH10W WITH ATTACHED PART NUMBER 800T-XA
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ALLEN BRADLEY 140-MN-0250 SERIES C MANUAL MOTOR STARTER 3 POLE


ALLEN BRADLEY 140-MN-0250 SERIES C MANUAL MOTOR STARTER 3 POLE

ALLEN BRADLEY 140-MN-0160 SERIES C MANUAL MOTOR STARTER


ALLEN BRADLEY 140-MN-0160 SERIES C MANUAL MOTOR STARTER 

ALLEN BRADLEY 700-HB33A24 SERIES B SERIES B RELAY 10A 2PDT 24VAC


ALLEN BRADLEY 700-HB33A24 SERIES C RELAY 10A 3PDT 24VAC 50/60HZ

ALLEN BRADLEY 194E-A25-1756 SERIES B LOAD SWITCH WITH KNOB 600VAC 10A


ALLEN BRADLEY 193-BSB22 SERIES B OVERLOAD RELAY 15-23 A

ALLEN BRADLEY 193-BSB22 SERIES B OVERLOAD RELAY 15-23 A
ALLEN BRADLEY 193-BSB22 SERIES B OVERLOAD RELAY 15-23 A


ALLEN BRADLEY 193-BSA 26 SERIES B OVERLOAD RELAY 0.16-0.24A
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ALLEN BRADLEY 193-BSA 90 SERIES B OVERLOAD RELAY 0.6-1.0A


ALLEN BRADLEY 1771-AL I/O ADAPTER MODULE 0.7A AT 5VDC


ALLEN BRADLEY 140-MN-0063 SERIES C MANUAL MOTOR STARTER 600V 2.5A


ALLEN BRADLEY 140-MN-0063 SERIES C MANUAL MOTOR STARTER 600V 2.5A


ALLEN BRADLEY 140-MN-0240 SERIES B MOTOR STARTER 660V 2.4A AC3 


ALLEN BRADLEY 1734-OB2E SERIES C OUTPUT MODULE 24VDC 75MA


ALLEN BRADLEY 1734-OB2E SERIES C OUTPUT MODULE 24VDC 75MA 


ALLEN BRADLEY 1734-IB2 SERIES C INPUT MODULE 24VDC 5MA 2 POINT SINK 


ALLEN BRADLEY 1734-IB2 SERIES A INPUT MODULE 24VDC 5MA 


ALLEN BRADLEY 1734-OW2 SERIES C OUTPUT MODULE 125/240VAC 2A 50/60HZ 


ALLEN BRADLEY 700-HB33A12-4 RELAY SERIES D 15A 3PDT 12VAC 50/60HZ


ALLEN BRADLEY 1734-0V4E SERIES C 24VDC SINK OUTPUT MODULE


ALLEN BRADLEY 800MS-WC SERIES A GREEN LEGEND PLATE


ALLEN BRADLEY 1203-GD1 SERIES C COMMUNICATION OPTION KIT MODULE


ALLEN BRADLEY 800MR-A1 SERIES A OPERATOR FOR PUSH BUTTON SWITCH 


ALLEN BRADLEY 193-ED1CB SOLID STATE OVERLOAD RELAY 600V MAX


ALLEN BRADLEY 1485K-P2F5-N5 SERIES A 5 POLE 79''


ALLEN BRADLEY 800EP-F2 FLUSH PUSHBUTTON 

ALLEN BRADLEY 800T-N51 SERIES B PILOT LIGHT LENS ACCESSORY


ALLEN BRADLEY 1492-N96 *PACK OF 10* SERIES A END PLATE BARRIER

ALLEN BRADLEY 855T-BPM10C POLE MOUNT BASE AND CAP SEE DESC

 ALLEN BRADLEY 440K-ALK03 SERIES A INTERLOCK SWITCH LOCKOUT HASP


ALLEN BRADLEY 141A-FM45 25 SERIES B MOUNTING SYSTEM 600VAC 25A


ALLEN BRADLEY 1492-H5 SERIES D SINGLE CIRCUIT FUSE BLOCK LED BLOWN 


ALLEN BRADLEY 800E-3LX10 SERIES B CONTACT CARTRIDGE WITH LATCH


ALLEN BRADLEY 800E-3LX10 SERIES B CONTACT CARTRIDGE WITH LATCH 


ALLEN BRADLEY 800MR-NX2Q SERIES A SELECTOR SWITCH SEE DESC

ALLEN BRADLEY 800H-QRB24 SERIES F PUSH BUTTON 24 AC/DC SEE DESC


ALLEN BRADLEY 800E-3X01V SERIES A LATCH MOUNT CONTACT BLOCK 


ALLEN BRADLEY 800E-3X01L SERIES A LATCH MOUNT CONTACT BLOCK 


ALLEN BRADLEY 800H-NP13 SERIES A PUSH BUTTON EXTRA LONG GUARD 


ALLEN BRADLEY 800T-QBH24 SERIES T ILLUMINATED PUSH BUTTON 24V AC/DC


ALLEN BRADLEY 800T-N319R SERIES C LAMP LED 24V AC/DC 

ALLEN BRADLEY 889D-F4WEDM-2 SERIES A 300V MALE/FEMALE ST/ST 4 POLE

ALLEN BRADLEY 800T-NX446 SERIES F SELECTOR SWITCH ACCESSORY 


ALLEN BRADLEY 595-B02 SERIES A AUXILIARY CONTACT FOR OVERLOAD RELAY 


ALLEN BRADLEY 800E-3LX11 SERIES B CONTACT CARTRIDGE WITH LATCH


ALLEN BRADLEY 889D-F4ACDE-2 SERIES A CORDSET 4 POLE 2 METERS
ALLEN BRADLEY 40392-400-13 DISCONNECT SWITCH HARDWARE KIT 60A

ALLEN BRADLEY 1492-CB1 G020 2A SERIES B MINIATURE CIRCUIT BREAKER 

ALLEN BRADLEY 1492-CB1 G040 SERIES C 1 POLE MINIATURE CIRCUIT BREAKER

ALLEN BRADLEY 1492-GHD150 SERIES A CIRCUIT BREAKER 2 POLE 125VAC 65VDC

ALLEN BRADLEY 100-FA22 AUXILARY CONTACT BLOCK 2NO 2NC FRONT MOUNTING

ALLEN BRADLEY 800T RING WRENCH

ALLEN BRADLEY 802T-NX50 SERIES B OPERATOR LEVER ROD LEVER 12.5"

ALLEN BRADLEY 1492-DR6 SERIES A RAISED DIN RAIL 35MM X 7.5MM X 57.4MM

ALLEN BRADLEY 855T-BCB SURFACE MOUNT BASE

ALLEN BRADLEY 1489-D CIRCUIT BREAKER 2 POLE 250V 

ALLEN BRADLEY 199-DR4 *PACK OF 5* SERIES A MOUNTING STRIP

ALLEN BRADLEY 194L-E16-4531 SERIES A STEP SWITCH 1-2-3-4-5-6 1 POLE

ALLEN BRADLEY 140U-H-TC4 SERIES A TERMINAL END COVER

ALLEN BRADLEY 140U-H-TC4 SERIES A TERMINAL END COVER

ALLEN BRADLEY 700-HK32Z24-4 SLIM LINE RELAY 5A 24VDC FOR PILOT LIGHT 

ALLEN BRADLEY 1746-1B16 SERIES C INPUT MODULE 10-30VDC 1MA 16 CHANNEL 

ALLEN BRADLEY 1492-G0H50 SERIES B CIRCUIT BREAKER 

ALLEN BRADLEY 700-CF220DJ SERIES A CONTROL RELAY 690V 24VDC 2NO 2NC

ALLEN BRADLEY 1734-TB3 SCREW TERMINAL BASE 12 POSITION

ALLEN BRADLEY 140M-C-ASA11 SERIES A

ALLEN BRADLEY 1585J-M8PBJM-2 SERIES A CORDET ETHERNET DOUBLE ENDED 2M

ALLEN BRADLEY 1489-AACL112 SERIES A BUS BAR 1 PHASE 12 POLE

ALLEN BRADLEY 140M-C-AFA11 SERIES A

ALLEN BRADLEY 1786XT TERMINATOR PLUG 

ALLEN BRADLEY 1492-CB2-H030 SERIES C 2 POLE CIRCUIT BREAKER 3AMP 1/2HP 

ALLEN BRADLEY 1492-CB2-G060 SERIES B 3 POLE CIRCUIT BREAKER 6A 277VAC

ALLEN BRADLEY 1492-SP1C400 SERIES C 1 POLE CIRCUIT BREAKER 240/415 VAC

ALLEN BRADLEY 700-HLS1U1 SERIES A SOLID STATE RELAY 1NO 110/125V 

ALLEN BRADLEY 700-K31Z-D SERIES B CONTROL RELAY 24VDC 600VAC 10A

ALLEN BRADLEY 700-SH10JZ24 SERIES A SOLID STATE RELAY 265VAC 10A

ALLEN BRADLEY 700-HLT1U1 TERMINAL BLOCK WITH ATTACHED PART NUMBER 

ALLEN BRADLEY 800E-N157W SERIES C LAMP 24V AC/DC

ALLEN BRADLEY 800T-N62W SERIES D LED LAMP 24V AC/DC WHITE

ALLEN BRADLEY 800T-N319R LAMP LED 24V AC/DC

ALLEN BRADLEY N319A LED LAMP 24V 

ALLEN BRADLEY 1492-HJ86 SERIES B SURFACE MOUNTED TERMINAL BLOCK 6 POLE

ALLEN BRADLEY 700-HB33A1 SERIES B RELAY 120VAC 10A

ALLEN BRADLEY 889D-F4AC-2 SERIES B CORDSET 4 POLE SINGLE ENDED FEMALE

ALLEN BRADLEY 1492-GHD100 SERIES A CIRCUIT BREAKER 10AMP 2POLE 125VAC 

ALLEN BRADLEY 1492-CB2H200 SERIES B CIRCUIT BREAKER 2 POLE 20AMP 

ALLEN BRADLEY 1492-100X SERIES B POWER TERMINAL BLOCK 600V 175A

ALLEN BRADLEY 1492-CB1 SERIES B CIRCUIT BREAKER G 300 1 POLE 30AMP 

ALLEN BRADLEY 1492-ACB SERIES B CIRCUIT BREAKER 6A 4P 277VAC 50VDC 125

ALLEN BRADLEY 802T-W1C SERIES B ROLLER LEVER NON-ADJ. STEEL

ALLEN BRADLEY 700-HN114 *PACK OF 10* SERIES A RETAINER CLIP

ALLEN BRADLEY 800F-N5W SERIES A PILOT LIGHT INTEGRATED LED 

ALLEN BRADLEY 889N F4AFNM-1 CORDSET 5 POLE MALE/FEMALE STRAIGHT 1M

ALLEN BRADLEY 889D-F4ACDE-2 SERIES A CORDSET 4 POLE 2 METERS