福建中立恒自动化设备有限公司

1．输入/输出单元

输入/输出单元通常也称I/O单元或I/O模块，是PLC与工业生产现场之间的连接部件。

PLC通过输入接口可以检测被控对象的各种数据，以这些数据作为PLC对被控制对象进行控制的依据；同时PLC又通过输出接口将处理结果送给被控制对象，以实现控制目的。

由于外部输入设备和输出设备所需的信号电平是多种多样的，而PLC内部CPU的处理的信息只能是标准电平，所以I/O接口要实现这种转换。

I/O接口一般都具有光电隔离和滤波功能，以提高PLC的抗干扰能力。另外，I/O接口上通常还有状态指示，工作状况直观，便于维护。

PLC提供了多种操作电平和驱动能力的I/O接口，有各种各样功能的I/O接口供用户选用。I/O接口的主要类型有：数字量（开关量）输入、数字量（开关量）输出、模拟量输入、模拟量输出等。

常用的开关量输入接口按其使用的电源不同有三种类型：直流输入接口、交流输入接口和交/直流输入接口。

常用的开关量输出接口按输出开关器件不同有三种类型：是继电器输出、晶体管输出和双向晶闸管输出。

继电器输出接口可驱动交流或直流负载，但其响应时间长，动作频率低；而晶体管输出和双向晶闸管输出接口的响应速度快，动作频率高，但前者只能用于驱动直流负载，后者只能用于交流负载。

PLC的I/O接口所能接受的输入信号个数和输出信号个数称为PLC输入/输出（I/O）点数。I/O点数是选择PLC的重要依据之一。当系统的I/O点数不够时，可通过PLC的I/O扩展接口对系统进行扩展。

2．通信接口

PLC配有各种通信接口，这些通信接口一般都带有通信处理器。

PLC通过这些通信接口可与监视器、打印机、其它PLC、计算机等设备实现通信。

PLC与打印机连接，可将过程信息、系统参数等输出打印；与监视器连接，可将控制过程图像显示出来；与其它PLC连接，可组成多机系统或连成网络，实现更大规模控制。

与计算机连接，可组成多级分布式控制系统，实现控制与管理相结合。远程I/O系统也必须配备相应的通信接口模块。

3．智能接口模块

智能接口模块是一独立的计算机系统，它有自己的CPU、系统程序、存储器以及与PLC系统总线相连的接口。

它作为PLC系统的一个模块，通过总线与PLC相连，进行数据交换，并在PLC的协调管理下独立地进行工作。

PLC的智能接口模块种类很多，如：高速计数模块、闭环控制模块、运动控制模块、中断控制模块等。

  THOMAS POWER SYSTEMS 800A 3-POS TEST SWITCH 600V NEMA 3R 3PTS-0800AAA3A2

BALDOR / RELIANCE 125 HP SUPER-E AC MOTOR 1775 RPM 460V 3Ø 405TS FR EM2559TS-4

 50 HP CHEMICAL PROCESSING MOTOR 460V 444T FRAME 3 PHASE 710 RPM

 ALLEN BRADLEY SIZE 5 400 A F COMBINATION STARTER 600V 120V COIL TYPE 12

ALLEN BRADLEY 513-FUB-52 NEMA SIZE 5 COMBO STARTER 250 AMP CIRCUIT BREAKER

 TRIPP-LITE 3Ø DOUBLE CONVERSION UPS SYSTEM 120/208V 30KVA 24KW SU30K3/3XR5

ABB 150 HP AC DRIVE 180 AMP 380-480 VAC 3 PHASE ACH550-BD-180A-4F267

 125 HP SUPER-E AC MOTOR 1785 RPM 460 VAC 444T FRAME 3 PHASE EM4410T-4

  GE GENERAL ELECTRIC TURBINE PUMP W/ 15 HP MOTOR 5KS254SAA2121W6

  AMETEK 4 HP REGENERATIVE BLOWER 230/460 VAC 3 PHASE 3450 RPM DR656CK72X

  ALLEN BRADLEY ENCLOSED WEATHER TIGHT PANELVIEW PLUS 1250 W/ ALARM

 R. DUDGEON'S 300 TON SINGLE ACTING HYDRAULIC CYLINDER JACK 22" HIGH x 13" DIA

  DJ PRODUCTS CART CADDY SHORTY POWERED CART MOVER 36 VDC CONTROLLER

 IVERSAL BLOWER 30 HP ROTARY LOBE BLOWER 5" x 5" 230/460 VAC 15081-J14-01

  HARRINGTON 1/2 TON ELECTRIC CHAIN HOIST W/TROLLEY 460V NER2M005LD-L-FG

 PENTAIR 7.5 HP POOL PUMP 3∅ 208-230/460 VAC EEQK750

 REBUILT NORDSON E-3890-1RK34/D HOT MELT 200/240 VAC 1/3 PHASE 4 PORT

SYMPATEC HELOS / BF LASER DIFFRACTION PARTICLE SIZER SYSTEM RODOS / M  VIBRI

LCV5010H01G07 Withdrawable it Nema Class E2 Medium Voltage Controller

 SQUARE D SIZE 5 STARTER 400 AMP BREAKER COMBINATION STARTER CR306G004 LAL3640

 WAUKESHA SPX 1 HP POSITIVE DISPLACEMENT SANITARY PUMP 1 1/2" MODEL 018 U1

 WAUKESHA SPX 3 HP POSITIVE DISPLACEMENT SANITARY PUMP 1 1/2" MODEL 030 U1

 DODGE 25.56:1 TORQUE ARM SPEED REDUCER 26.2 HP 2045 RPM TXT525T

 EMERSON US MOTORS CTI 75 HP ELECTRIC MOTOR 405T FR 1190 RPM 3 PH 230/460

 40 HP SUPER-E MOTOR 3550 RPM 324TS FRAME 3Ø 230-460V EM4109T

  DA-LITE F HEAVY DUTY DELUXE SCREEN SYSTEM F/F HD DLX DMBB / 92097

 30 HP ELECTRIC MOTOR 460 VAC 1760 RPM 286T FRAME 3 PHASE

 SQUARE D SIZE 5 REVERSING STARTER 120VAC COIL 600 VAC 3Ø 200 HP 8736SGO3S

 YASKAWA 15 HP ENCLOSED SERVO DRIVE 60 AMP DISCONNECT 480V 3 PHASE SGDH-1ADE

  TUTHILL 4509-46L2 ROTARY LOBE BLOWER 7" x 4 1/4" FLANGE 1 1/2" SHAFT

 LIFT PRODUCTS SCISSOR LIFT TABLE 4000 LBS CAPACITY 460 VAC 3∅ LPT-040-36

 STRONGH DOUBLE SHIFT 8 SHELF CABINET 48" W x 24" D x 78" H 46-DS-248

 WAUKESHA SPX 1 HP POSITIVE DISPLACEMENT SANITARY PUMP 1/2" MODEL 006U1

 WAUKESHA SPX 1 HP POSITIVE DISPLACEMENT SANITARY PUMP 1/2" MODEL 006 U1

  SQUARE D 20 HP ATV212 S-FLEX ENCLOSED VFD 460 VAC 3 PHASE SFD212KG4Y

  GLEASON REEL SERIES S HEAVY DUTY CABLE REEL 35A 600V S28622-43-22-2-CSA

 GE GENERAL ELECTRIC 60 HP ELECTRIC MOTOR 364TC FR 1785 RPM 5KS364SAA2131W6

  MD PNEUMATICS 3" 3200 PD PLUS HIGH PRESSURE BLOWER 15 PSI MAX 3210-46L3

 WAUKESHA SPX 7.5 HP CENTRIFUGAL PUMP 2 1/2" x 3" TRI CLAMP 240/480V 2085

 MOYNO 1 HP PROGRESSING CAVITY PUMP 1 1/2" FLANGED 203/460 VAC A2P-CDQ3APA

  TECO WESTINGHOUSE 40 HP INVERTER DUTY MOTOR 1180 RPM 230/460V 364T FR 3Ø

 40 HP SUPER-E AC MOTOR 1780 RPM 324T FRAME 3Ø 230/460 VAC EM2539T

 LEDCO POUCH / MOTING LAMINATOR 110 VAC 1050 WATT XL-44

  SIEMENS SKC62U ACTUATOR 24VAC WITH FLOWRITE 599 SERIES 4" VALVE 294-05992

 EATON FD30-60-D-L1 FIRE PUMP CONTROLLER 7" TOUCHSCREEN 60 HP 480 VAC 3 PHASE

ABB ACH550 AC DRIVE W/ BYPASS ACH550-BC-059A-4E213F267 40HP 380-480V 59 AMPS

 DYNARIC NP-3 AUTOMATIC SPAPER STRAPPING MACHINE .55KW 208/230/460V

 RP ADAMS 6" CY-C CYCLMOISTURE SEPARATOR ASME 150# SERIES CAST IRON

 EAM MOSCA STRAPPING MACHINE 110 VAC 1.1 kW 13 AMP RO-M

 FISHER 1" SIZE 34 TYPE 667 FIELDVUE DVC5010 VALVE ACTUATED POSITIONER 304

 EHM2535T-8 30 HP ELECTRIC MOTOR 1770 RPM 286T FR 3Ø 200 VAC

 GEAR MOTOR 2 HP 1755 RPM VEM3558/W BOSTON GEAR REDUCER F726-20-B5-J

 25 HP ELECTRIC MOTOR 460 VAC 1760 RPM 284T FRAME 3 PHASE

 BEACON/MORRIS 400,000 BTU/HR TUBULAR NATURAL GAS PROPELLER HEATER BTU-400

 NORD 20HP CLINCHER SHAFT MOT GEARMOTOR 460V 30.91:1 RATIO 6382ABG-160L/4CUS

 GEORATOR 1 HP BRUSHLESS GENERATOR 0.5 KVA 120/240 VAC 1760 RPM 1 PHASE 37-105

  FISHER 656 DVC6010 FIELDVUE SIZE 30 CONTROL VALVE POSITIONER ACTUATOR

  PACIFIC SCIENTIFIC 7.5 HP DC MOTOR 640 VDC 184T FRAME 2500 RPM

 MOTOR VL3509

REBUILT FLOWSERVE MK3 STD CENTRIFICAL PUMP 1K1.5X1-62RV/4.06 CD4M/CD4MCu 285 PSI

CUMMINS 225 AMP AUTOMATIC TRANSFER SWITCH 480 VAC 3 POLE SPEC A OTPCB-5670336

  MODINE HSB258LB06SA HORIZONTAL STEAM/HOT WATER HEATER 258,000 BTU 1 1/4"

 STANDARD XCHANGE SHELL  TUBE 2" HEAT EXCHANGER 300 PSI SHELL SN514200174700

 ADAPTIVE ALPHAECLIPSE STREETSMART MODEL 17X MASTER SLAVE LED SIGN 44 X 44"

  GUSHER 7.5 HP SELF-PRIMING PUMP 2" x 2" 230/460 VAC 3480 RPM SPP2X2-C-A

 ALLEN BRADLEY 75 HP MOTOR CONTROL AC VFD 1336 SERIES 1336T-B075-AX-GT2EN-L6

 GAST 1 1/2 HP DUAL VACUUM PUMP W/ RECIEVER 208-230/460V 3 PHASE

 AVENTICS HYDRAULIC CYLINDER 7" BORE 10¼" STROKE R433087474

  SIEMENS 260 HP HIGH EFFICIENCY MOTOR 1775 RPM 364T FR 3Ø 230-460V RGZPSD

  ALLEN BRADLEY 20 HP ELECTRIC AC MOTOR 230-460 VAC 256T FRAME 1760 RPM 3Ø

  WEG 40 HP ELECTRIC MOTOR 324TS FRAME 3555 RPM 3 PHASE 460 VAC

  US ELECTRICAL 50 HP AC MOTOR 230/460 VAC 1775 RPM 326T FRAME 3 PHASE

INTERPACK RSA2024 TB 2" CASE SEALER  TAPER 115 VAC SINGLE PHASE 9CFM 90 PSI

 RELIANCE 10 HP DC MOTOR 240 VDC 2300 RPM 2⅝" L 1" DIAMETER C1812ATCZ

  EMERSON US MOTORS 50 HP AC MOTOR 230/460 VAC 3 PHASE 326T FRAME 1780 RPM

 INTERPACK 2" CARTON SEALER 1/3 HP 115 VAC SINGLE PHASE 4.8 AMP USA2024-BB

 BELL  GOSSETT 25 HP CENTRIFUGAL PUMP 6" x 8" 230/460 VAC 1765 RPM 3 PHASE

MAGNETEK 15 HP ELECTRIC AC MOTOR 208-230/460 VAC 1750 RPM S254T FRAME 3 PHASE

ENERPAC 1.5 HP HYDRAULIC PUMP 230 V 6 AMP 3Ø OIL CAP. 1155 CU IN PEM4045C

 MEA TRNION MOTED CYLINDER 5111-63-005-86 W/ ENCODER BTL7-E500-M0508-Z-

 EPSON / SEIKO XM3023B11LN D-TRAN ROBOT W/ SEIKO SRC-520 CONTROLLER

REPAIRED THERMAL EDGE NEO348612 ENCLOSURE AIR CONDITIONER 480V 1Ø 3,000 BTU/H

YASKAWA DRIVE BYPASS 57.3 AMP 480 VAC 3 PHASE E7LVB052GY

 RELIANCE 5 HP HAZ LOC MOTOR 1750 RPM 184TC FR 3Ø 230/460V CXM18542T

  WORLDWIDE 25 HP 3 PH INDUCTION MOTOR 284TS FR 230/460 VAC 3550 RPM 58/29A

DRESSER RAND ENERPAC HYDRAULIC HAND PUMP DOUBLE ASSEMBLY 000-028-952 REV 1

 TECO 25 HP MAX-E1 SEVERE DUTY INDUCTION MOTOR 3545 RPM 284T FR 3Ø 230/460V

 PEERLESS STERLING 25 HP CENTRIFUGAL PUMP 2 1/2 " x 4" C825A

  SEW-EURODRIVE 5.82:1 GEARMOTOR 1758 RPM 5 HP 230/460 VAC 3Ø R57 DRN100L4

  GRDFOS 2-1/2" HP CENTRIFUGAL PUMP 2" x 3" 440/460 VAC 1750 RPM L90L FR

 PMP ACTUATOR W/ 6" PMP M215 SS BALL VALVE PMP ACTUATOR  POS. INDICATOR

PARKER VICKERS 15 HP HYDRAULIC IT 3000 PSI PVQ32-B2L-SE1S 15 GPM

 RELIANCE 5 HP DC ELECTRIC MOTOR 1750 RPM 180V DC2112ATCZ FRAME W/ TACH

  KERRY SERIES JE HYDRAULIC 37" ACTUATOR JE-37 W/ 5/3 HP MOTOR VEM7044T

LUFKIN GEAR DRIVE PART # N602C RATIO 1.604:1

 DODGE QUANTIS HB682SI100 HELICAL REDUCER 16.45:1 RATIO 1750 RPM 9.95 HP

  INLET ROTARY VALVE 9" x 9" ID 12-1/4" x 12-1/4" OD 1-1/4" DIA 0BRV02AI

 FLOWSERVE 5 HP CHEMICAL PROCESS PUMP 1 1/2" x 3" 230/460V 1750 RPM MK3 STD

ALFA LAVAL PLATE AND FRAME HEAT EXCHANGER 150 PSI MAX AT 20°F 271935.11

 DODGE 25:1 STRAIGHT BORE GEAR REDUCER 2⅝'' OPEN BORE TXT4-25-1

  WEIL 4" DISCHARGE SUBMERSIBLE WASTEWATER PUMP 3 HP 1750 RPM 3Ø W-2523-15

 ASCO 150 AMP NON-AUTOMATIC TRANSFER SWITCH 480 VAC 3 PHASE D07NTSA30150N50C

TELEMECANIQUE ATV61HD75N4 ALTIVAR 61 75KW 100 HP DRIVE 380-460VAC REMOTE PANEL

  TECO WESTINGHOUSE 20 HP INVERTER DUTY MOTOR 230/460V 3520 RPM 256T FR 3Ø

  TOSHIBA 20 HP EQP AC MOTOR 3520 RPM 256T FR 3Ø 230/460 VAC 0202SDSR41A-P

ARO 3" NPTF AIR OPERATED DOUBLE DIAPHRAGM PUMP 120 PSI 237 GPM PD30A-AAP-AAA-C

 CLEVELAND WORM GEAR SPEED REDUCER 100HAF 22.8 HP 33.09:1 RATIO 1200 RPM

  US MOTORS 15 HP HOSTILE DUTY MOTOR 208-230/460V 3545 RPM 254T FR 3Ø DK59

  ABB / K-TEK ACCUTRAK MAGNETOSTRICTIVE LEVEL TRANSMITTER SW/S6/W2/C3/(WP)

 7.5 HP ELECTRIC AC MOTOR 208-230/460V 213TC FRAME 3450 RPM 3 PHASE

  MAGNETEK / CENTURY SC 20 HP AC MOTOR 230-460V 256T FR 1740 RPM 3Ø E448

SANDPIPER 2" POLYPROPYLENE DOUBLE DIAPHRAGM PUMP 100 PSI MAX S20B3P2PPUS100

  STA-RITE SC9 SERIES CAST IRON SEWAGE PUMP 1.5 HP 460V 3Ø 60 CY SCC9150420

REBUILT DODGE 1 HP REEVES DRIVE 460V 50:1 RATIO 84 RPM SIZE 1C16 R384363-001-EM

REBUILT DODGE 1 HP REEVES DRIVE 460V 50:1 RATIO 84 RPM SIZE 1C16 R384370-001-EM

 SCHULZ ADS150-UP REFRIGERATED AIR COMPRESSOR DRYER 115 VAC 150 SCFM

 QMARK ELECTRIC WALL  CEILING IT HEATER 480V 3 PHASE 85,325 BTUH MUH254A

   YORK BLOWER 635 CFM 1716 RPM BLOWER 1.5 HP 16-1/2" INTAKE 16-1/2" OUT

ODRIVE 1 HP GEAR MOTOR 230YY/460Y VAC 1700 RPM 1396.0:1 RATIO

  SIEMENS 10 HP ELECTRIC AC MOTOR 208-230/460V 3515 RPM 215TD FRAME 3 PHASE

  SIEMENS GP100 15 HP PREMIUM EFFICIENCY MOTOR 230/460V 875 RPM 286T FR 3Ø

 US MOTORS 75 HP ELECTRIC AC MOTOR 230/460 VAC 365T FRAME 3 PHASE 1785 RPM

 US MOTORS 60 HP ELECTRIC AC MOTOR 230/460 VAC 364T FRAME 3 PHASE 1780 RPM

 GE GENERAL ELECTRIC 20 HP AC MOTOR 200*-230/460 VAC 3Ø 256T FRAME 3530 RPM

   YORK BLOWER 810 CFM 1160 RPM BLOWER 1.5 HP 8" INTAKE 8" OUT

 TOSHIBA 30 HP INDUCTION MOTOR 3515 RPM 284TS FR 3Ø 230/460V B0302VGG3U4

 VERSA-MATIC 2" ELIMA-MATIC DOUBLE DIAPHRAGM PUMP 125 PSI E2AA6X669C-ATEX

 SGC DORRIS 8329 RH REDUCTION GEAR DRIVE 29.508 RATIO 1-3/8" X 3" SHAFT DIA

RELIANCE AC ELECTRIC MOTOR KNOWN HP 230/460V KNOWN RPM 449T MISSING TAG

 EMERSON E-LINE 30 HP EL30 AC MOTOR 1755 RPM 286T FR 208-230/460V 3Ø ELT30E2D

 WESTINGHOUSE 2 HP ELECTRIC MOTOR 184T FRAME 230/460 VAC 1165 RPM 3Ø

 WESTINGHOUSE 20 HP ELECTRIC MOTOR 256T FRAME 230/460 VAC 1755 RPM 3Ø