在開環(huán)控制系統(tǒng)中，系統(tǒng)輸出只受輸入的控制，控制精度和抑制干擾的特性都比較差。開環(huán)控制系統(tǒng)中，基于按時序進行邏輯控制的稱為順序控制系統(tǒng)；由順序控制裝置、檢測元件、執(zhí)行機構(gòu)和被控工業(yè)對象所組成。主要應(yīng)用于
機械、化工、物料裝卸運輸?shù)冗^程的控制以及機械手和生產(chǎn)自動線。
YASKAWA ELECTRIC ROBOTIC CONTROLLER CACR-SK16AAC
SQUARE D I-LINE DISTRIBUTION PANEL 800 AMP 12 CIRCUITS
REBUILT GOULDS PUMP 3796 3 X 3 X 13 NEW SUCTION END MAT
ALLEN BRADLEY 2711P-T15C6A2 PANELVIEW PLUS 1500 2711P-R
NEW RIETSCHLE THOMAS VACUUM PUMP KLT-40
RELIANCE DCS POWER DISTRIBUTION MODULE 300 HP 803613-SC
CUTLER HAMMER 3000 AMP CIRCUIT BREAKER SPBR330R
JEFFERSON 1000 KVA TRANSFORMER 480 240 VAC DELTA DELTA
SHIMADZU TOTAL ORGANIC CARBON ANALYZER TOC-5050A
CONTROL TECHNIQUES 37.0Kw UNIDRIVE UN13405-R
CONTROL TECHNIQUES 60 HP FREQUENCY INVERTER V4500ICD
NEW MARTIN WALTER 40kHZ POWERSONIC GENERATOR 84TE-5-CMI
SQUARE D CIRCUIT BREAKER 1200 AMP SED361200LS
HARRINGTON 3 TON CHAIN HOIST WITH BEAM TROLLEY ER030C
SQUARE D CIRCUIT BREAKER 4000 AMP MC40H1
RECONDITIONED REIMELT ROTARY DISCHARGE VALVE TYPE 5
NEW DURCO FLOWSERVE 40 HP PUMP D4/CF8M 2K3x2-82RV/7.81
SQUARE D 2000 AMP CIRCUIT BREAKER PXF362000 AUX PA11212
VECTOR SCHIEUNIQER 6D TABLET HARDNESS TESTER
SIEMENS 6RA7025-6FV62-0?-Z SIMOREG DC CONVERTER 6RA70
WILDEN PUMP M8 2" DIAPHRAGM PUMP HASTELLOY-C MODEL 08-1
AQUAFINE WATER OZONE DESTRUCTION UV UNIT RBE-12R/60
TRANE 20 TON AIR COOLED CONDENSER CAUCC2041H1300
KONDIA 48" X 26" POWER MILLING MACHINE MODEL G 220 440V
NEW TELEMECANIQUE 60 Hp AC VFD DRIVE ATV66D64N4
NEW MARTIN WALTER POWERSONIC GENERATOR 84TE-5-CMI
MULTI-SHIFTER FORKLIFT BATTERY EXTRACTOR MS4-11/A1V-ICI
NEW MARATHON 125 HP EXPLOSION PROOF AC MOTOR 444T FRAME
REBUILT 250 HP ELECTRIC MOTOR 585W FRAME 1180 RPM 460
NEW NORD POWER TRANSMISSION MOTOR DRIVE 29745 TORQUE
NEW TB WOODS 60 HP AC VECTOR DRIVE UVC40600H-RHDRW 460V
NEW SIEMENS SIMODRIVE SERVO DRIVE 6SN1145-1AA01-0?AA2
RECONDITIONED STOKES VACUUM PUMP 900.306.04IXS
NEW WAUKESHA CHERRY BURRELL SANITARY PUMP 25 HP 2085LV
NEW SUNDSTRAND HYDRAULIC HYDRO-TRANSMISS?ION MOTOR
NEW SICK DME2000-000 OPTIC DISTANCE MEASURING DEVICE
GE THPR3612B HIGH PRESSURE CONTACT SWITCH 1200 A FUSED
NEW GRACO 1.5:1 RATIO MONARK PUMP 218-763 MOTOR 210-004
SQUARE D 1200 AMP I-LINE CIRCUIT BREAKER NX361200
NEW BRUENINGHAUS HYDROMATIK HYDRAULIC PUMP A10VSO
MOREHOUSE INSTERUMENT SERIES 100 PROVING RING 10,000 PO...
SQUARE D COMBO MOTOR STARTER SIZE 3 NEMA 4X 8536SEO1S
SQUARE D TVS4EMA16AC SURGE SUPPRESSOR 480/277 200 kA
IDEAL HORIZONS UV WATER DISINFECTION UNIT IH-5 QTZ0037
ALLEN BRADLEY 8520-AA21 SINGLE AXIS 21A AMPLIFIER 8520A...
LINCOLN SQUARE WAVE TIG 175 PRO WELDER AND ITW COOLER
NEW POLYSONICS DIGITAL CORRELATION TRANSIT TIME FLOW ME...
SQUARE D 400 AMP FUSED DISCONNECT 4 POLE 2 PHASE H425
NEW HPI HYDROPERFECT HYDRAULIC GEAR PUMP P1CBN4175HD
NEW ELECTRO-CRAFT SERVO MOTOR H-6300-X-H00AA 750 RPM
NEW SM CYCLO 18 HP GEAR SPEED REDUCER 87:1 RATIO
NEW YASKAWA 7.5 HP AC VFD DRIVE CIMR-P7U45P5 P7BVB011J
COFFING 2 TON CHAIN HOIST WITH POWERED TROLLEY 230/460 ...
SQUARE D I-LINE BUS PLUG 400 AMP FUSED SWITCH 4 WIRE PB...
NORD SIEMENS 16 RPM GEAR REDUCER 15 HP GEARMOTOR 148.76
NEW 20 HP BELL GOSSETT CIRCULATING PUMP 6X9.5 6.75BF
SQUARE D NC361000 I-LINE CIRCUIT BREAKER 1000 AMP FREE ...
MODICON TSX QUANTUM 140 CPU 534 14 586 CPU 140CPU53414
NEW SQUARE D JLA36200 CIRCUIT BREAKER 200 AMP I-LINE
CUTLER HAMMER 600 AMP CIRCUIT BREAKER HLDB3600FT33W 600...
G&L 10 HP DIE CAST CENTRIFUGAL PUMP 1X1.50-8 3510 RPM
NEW VAT 641PM-16BC-0002 /1186 ADAPTIVE PRESSURE CONTROL
ARTESYN COMPLETE PLC SYSTEM W/ POWER SUPPLY 37425-109
NEW YARWAY 8" DOUBLE SLEEVE FLANGED EXPANSION JOINT
ALLEN BRADLEY SMART MOTOR STARTER 150-A97NBDB 75 HP 208...
NEW GUSHER PUMP 15 HP 1-1/2" X 3" 13SEH-CBM 230/460V 17...
NEW CINCINNATI MILACRON 3-533-1028G CPU BOARD
CORONA LACY-HULBERT 2 HP VACUUM PUMP 1730 RPM 3 PHASE
AQUAFINE UV WATER DISINFECTION MP-2-SL 1010 FLOWMETER
NEW DUNHAM-BUSH REFRIGERATION COMPRESSOR 151PHFCFRMFAR6
NEW THERN MODEL 477 CABLE WINCH 1-1/2 HP 477AC-3DH
ALLEN BRADLEY PANELVIEW 1000 INTERFACE 2711-T10G16
ANDERSON INSTRUMENTS TRL RADAR LEVEL TRANSMITTER
GENERAL PNEUMATICS TK100A INDUSTRIAL AIR DRYER 115V
NEW ALLEN BRADLEY 2711P-T9C1 OPERATOR INTERFACE PANELVI...
NEW TELEMOTIVE 10K12 HOIST & CRANE RADIO CONTROL SYSTEM
ENDRESS HAUSER MASS FLOW METER 63FS15 TUBE 904L SS 1/2"
ACCU-SORT 4800 SCANNER CONTROL EM-50 EXPANDER & SYMBOL
CROUSE HINDS HAZARDOUS LOCATION EMERGENCY LIGHT ELPS502
FRISTAM 2" X 2.5" SANITARY SS CENTRIFUGAL PUMP 3 HP
NEW ANVER VB9HV VACUUM PUMP VB REGENERATIVE PUMP
BUCHI B-810 MULTI HEATER EXTRACTION RACK
CONTROL TECHNIQUES 60 HP VARRIABLE FREQUENCY INVERTER V...
NEW US MOTORS ELECTRIC MOTOR 50 Hp 230 / 460 VAC 1780 R...
NEW EECO 25 hp SUBMERSIBLE HYDRAULIC ELEVATOR
KEYENCE LCD COLOR MONITOR CA-MN81
JENSEN ROTARY LOBE SANITARY TRANSFER PUMP 2" STAINLESS
SIEMENS SENTRON CIRCUIT BREAKER 600 AMP LMXD63B600
ADMAG MAGNETIC FLOWMETER PLATINUM ELECTRODE AE202MN
NEW GE STATIC FREQUENCY RELAY 12SFF31A1A
GE 1200 AMP ELECTRICAL PANEL 400 AMP SWITCH ADS36400H
FLOWSERVE 2K4X3-10 CENTRIFUGAL PUMP 316SS D4 100 HP 460
NEW GENERAC POWER 200 AMP INTEGRATED LOAD CENTER 120/20...
NEW REXROTH HYDROMATIK HYDRAULIC PUMP A4VSO 180
NEW REXROTH HYDROMATIK HYDRAULIC PUMP A4VSG 125
ALLEN BRADLEY 1336F-BRF200-AN?-EN 20 HP 460 W/ ENCLOSURE
NEW TEXTRON GEAR SPEED REDUCER H070-6 DUAL SHAFTS 70:1
VECTOR SCHIEUNIQER 6D TABLET HARDNESS TESTER
KUKA PM6-600 ROBOT SERVO DRIVER CONTROLLER PM6600
ALTIVAR 66 AC DRIVE ATV66D23N4U 25 HP W/ BYPASS 460 VAC
ALLEN BRADLEY 40 HP VFD AC DRIVE 1336S-BX040-AN-?EN3
ALLEN BRADLEY 40 HP VFD AC DRIVE 1336S-BX040-AN-?EN5-L6E
NEW REXROTH HYDRAULIC PUMP AA10VS0140DFE1/?31R-PKD62N00
ALLEN BRADLEY 40 HP VFD AC DRIVE 1336S-BX040-AN-?EN4-L6E
NEW KAM THERMAL HEAT EXCHANGER
ALTIVAR 66 AC DRIVE ATV66D16N4U 20 HP W/ BYPASS 460 VAC
CONTROL TECHNIQUES 60 HP VARRIABLE FREQUENCY INVERTER V
NEW ASCO 200 AMP AUTOMATIC TRANSFER LOAD CENTER E7000L2
ALPHA LAVAL 1-1/2" X 2-1/4" SS CENTRIFUGAL PUMP 15 HP
ALLEN BRADLEY AC SERVO DRIVE 1392-B100-RK-MC?-A-D1-FI-F4
NEW TELEMECANIQUE 50 Hp AC VFD DRIVE ATV66D54N4
NORD GEAR SIEMENS 7.5 HP GEARMOTOR 3 PHASE 95.86 RATIO
SQUARE D 600 AMP FUSED DISCONNECT 4 POLE 2 PHASE H426
PROTECTOSEAL PRESSURE VACUUM BREATHER VENT F19808PA10
HP OSCILLOSCOPE 2 CHANNEL 500 MHz 54616C
SIEMENS CIRCUIT BREAKER LSIG NEUTRAL 800 AMP SBS0808
PARKER HPX POWERSTATION OPERATOR INTERFACE HPX10S-XAAB4
NEW SM-CYCLO 435:1 RATIO GEAR SPEED REDUCER 13.1 HP
NEW NORD POWER TRANSMISSION MOTOR DRIVE 25078 TORQUE
GS HEAVY DUTY 75 KVA SCR DRIVE TRANSFORMER 460 230 DY
NEW HMC WATER BOOSTER PUMP PACKAGE 2 GOULDS STAINLESS P...
RELIANCE 100 HP MAXPAK III DC DRIVE MODULE M/N 100P8171
FRISTAM 7.5 HP SANITARY TRANSFER PUMP 2" WITH VFD PLUS
HYDRATIGHT BOLT TENSIONER HTPT1350702D HTPT13507010
NEW ENDRESS HAUSER MICROPILOT LEVEL INDICATOR FMR 130
CONTROL TECHNIQUES SE43401500 AC DRIVE 20 HP 3 PH 380-5...
YORK CODEPAK CONTROL CENTER ASSEMBLY YSDBCAS3-CBL
NEW HYDRAULIC PUMP A10V0100DFE/31R?-PSC62K02 PSC62K02
NEW BROWNING SHAFT MOUNTED SPEED REDUCER 407SMFP25
SQUARE D 2000 AMP MAIN CIRCUIT BREAKER PXF362000
PARKER CTC PS10-3H2-DDA-AD?3 COMPUTER TOUCH SCREEN INTER...
NEW MOOG HYDRAULIC VALVE D661Z4757A TYPE P80HXAP6NEA2-K
ARO DIAPHRAGM PUMP PD20A-ASS-STT REBUILT STAINLESS 2"
HONEYWELL ELPM 620-0073C ETHERNET LOOP PROCESSOR MODULE
KOHLER AUTO TRANSFER SWITCH K-166543-600 480VAC 600 AMP...
NEW GE 800 AMP 300 VDC DC POWER BREAKER AKR-2AE-30
NEW YASKAWA 10 HP AC VFD DRIVE CIMR-P7U47P5 P7BVB014J
SQUARE D 225 KVA DRY TYPE TRANSFORMER 480-208Y/120
NEW BALDOR ELECTRIC MOTOR 60 HP 364TC FRAME 1780 RPM 23...
ALLEN BRADLEY 2711P-T10C15D2 PANELVIEW PLUS 1000 24VDC ...
SQUARE D POWERPAC 800 AMP I-LINE BREAKER MJ800 MJA36800
ENDRESS HAUSER 63FS25 FLOW METER 1" K F 2.4972/-16 M...
ENDRESS HAUSER 63FS25 FLOW METER 904L STAINLESS TUBE 1"
NEW REULAND 1121-XJ3078AE MAGNETIC BRAKE MOTOR .75HP
DOBOY WRAPPER CONTROL PLC RACK UNIT
KEYENCE LK-G3001P CONTROLLER W/ LK-FD500 KEYPAD & 2 SER...
SQUARE D 22.5 KVA MINI POWER-ZONE TRANSFORMER MPZ22T2F
BIGIESSE SILVAN 4 HP VACUUM PUMP WITH RECEIVER TANK
NEW MICROCOOL ENVIROMIST FOG COOLING & MISTING SYSTEM
BALTEC MODEL RNE 081 ORBITAL RIVETING MACHINE RNE081
ALLEN BRADLEY 40 HP AC VFD DRIVE 1336F-BX040-AX-?EN-L6
WESTINGHOUSE CIRCUIT BREAKER 2000 AMP 600VAC 2603D38G01
TRI-CLOVER 15 HP STAINLESS CENTRIFUGAL PUMP 1-1/2X1-1/4
NEW GRACO 3:1 RATIO PRESIDENT 205038 MOTOR 237-145 PUMP
SQUARE D PHF20361021 CIRCUIT BREAKER 2000A FR. 1200A TR
NEW SQUARE D POWERLOGIC CIRCUIT MONITOR SMA220 CM2350
IMI AMAL DETONATION ARRESTOR 4" STAINLESS STEEL IRBD/4Q
NEW SQUARE D I-LINE PANEL 400 AMP 22 CIRCUITS
NEW SQUARE D I-LINE PANEL 400 AMP 22 CIRCUITS
NEW BUSCH VACUUM PUMP RA0010B5032021
SQUARE D 22.5 KVA MINI POWER-ZONE TRANSFORMER MPZ22T2F
SQUARE D 22.5 KVA MINI POWER-ZONE TRANSFORMER MPZ22T2F
VICKERS PVB45 FRSF21 HYDRAULIC PUMP VICKERS 436392 PUMP
NEW SQUARE D MODEL 6 40 HP VFD W-BYPASS 460V FHP3610018
NEW LENZE ROTH & RAU SERVO DRIVE EVS-9321-ES
GOULDS PUMPS 6" x 8" 40 Hp PUMP MODEL 3408
RECONDITIONED REIMELT ROTARY DISCHARGE VALVE TYPE 15
KOHLER GENERATOR 400 AMP AUTOMATIC TRANSFER SWITCH KB56
HARRINGTON 2 TON CHAIN HOIST 21' CHAIN 460 VAC W/ PENDA...
WEDECO IH-12S UV LAMP AIR WATER DISINFECTION SYSTEM
ACME 225 KVA DRY TYPE OUTDOOR TRANSFORMER 480 480Y-277
SQUARE D PLA34080U33A 800 AMP I-LINE CIRCUIT BREAKER PL...
SQUARE D NC361200 I-LINE CIRCUIT BREAKER 1200 AMP FREE ...
SQUARE D NC36800 I-LINE CIRCUIT BREAKER 800 AMP
ENDRESS HAUSER MAGNETIC FLOW RATE METER 1-1/2" 50P40
GE LIGHTING AUTOMATION PANEL 48 CIRCUITS WITH 40 RR9
NEW VICKERS HYDRAULIC VALVE NC SERVO TECH KAFDG5V72C150..?.
ALLEN BRADLEY SMC MOTOR STARTER 150-A360NBD 300 HP W/OV...
KONTRO 316 SS 10 HP SEAL/LESS PUMP 32 GPM MODEL A-RANGE
ALLEN BRADLEY 2711P-K10C6D1 PANELVIEW PLUS 1000 24VDC
閉環(huán)控制系統(tǒng)是建立在反饋原理基礎(chǔ)之上的，利用輸出量同期望值的偏差對系統(tǒng)進行控制，可獲得比較好的控制性能。閉環(huán)控制系統(tǒng)又稱反饋控制系統(tǒng)。
給定值不變，要求系統(tǒng)輸出量以一定的精度接近給定希望值的系統(tǒng)。如生產(chǎn)過程中的溫度、壓力、流量、液位高度、電動機轉(zhuǎn)速等自動控制系統(tǒng)屬于恒值系統(tǒng)。
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