A3NMCA4

A3NMCA4

A3NMCA4

A3NMCA4

一、摘要 PLC是一种专门在工业环境下应用而设计的数字运算操作的电子装置。

它采用可以编制程序的存储器，用来在其内部存储执行逻辑运算、顺序运算、计时、计数和算术运算等操作的指令，并能通过数字式或模拟式的输入和输出，控制各种类型的机械或生产过程。PLC及其有关的外围设备都应按照易于与工业控制系统形成一个整体，易于扩展其功能的原则而设计。在工业生产的各个领域，机械加工企业为了提高生产效率，采用机械化流水作业的方式，对不同类型的零件分别组成的自动生产线。随着产品机型的更新换代，生产线承担的加工对象也随之改变，这就需要改变控制程序，使生产线的机械设备按新的工艺过程运行，而继电接触器控制器系统是采用固定接线，很难适应这个要求。大型自动生产线的控制系统使用的继电器数量很多，随着PLC的应用日益普及,其使用方法简单,便于掌握,且可靠性,抗干扰性很强,自身具有完善的功能.模块化的结构,使其在工业生产线上的应用越来越广泛。

　　发展趋势：1.向高速度、大容量方向发展

　　为了提高PLC的处理能力，要求PLC具有的响应速度和更大的存储容量。目前，有的PLC的扫描速度可达0.1ms/k步左右。PLC的扫描速度已成为很重要的一个性能指标。

　　在存储容量方面，有的PLC可达几十兆字节。为了扩大存储容量，有的公司已使用了磁泡存储器或硬盘。

　　2.向超大型、超小型两个方向发展

　　当前中小型PLC比较多，为了适应市场的多种需要，今后PLC要向多品种方向发展，特别是向超大型和超小型两个方向发展。现已有I/O点数达14336点的超大型PLC，其使用32位微处理器，多CPU并行工作和大容量存储器，功能强。

MAC MV-A1B-A111-PM-111JC Valve 25 to 150 PSI MVA1BA111PM111JC

MAC PME-501BAAA 55B-12-PI-591JC 24 VDC Solenoid Valve PME501BAAA 55B12PI591JC

MAC PME-501CA 24 VDC Solenoid Valve PME501CA

MAC PR82A 0-80 PSI Regulator PR82A-GBBB-9

MAC PR82A-KABA-7 0-120 PSI Valve PR82AKABA7

MAC PR82A-KACA 0-120 PSI Valve PR82AKACA

MAC TM-DAAJ-1DA 82A-AA-CAA-TM-DAAP-2DA-9 TMDAAJ1DA 82AAACAATMDAAP2DA9

MAC TM-DAAJ-1DA 82A-EC-CKA-TM-DAAP-1DA 120 VAC TMDAAJ1DA 82AECCKATMDAAP1DA

MAC TM-DDAJ-1DA 24 VDC 82A-BC-BAA-TM-DDAP-1DA Valve TMDDAJ1DA 82ABCBAATMDDAP1DA

MAC TM-DDAJ-1DA 24 VDC Valve TMDDAJ1DA

MAC TM-DFBP-1DA 24 VDC Valve 25 to 150 PSI TMDFBP1DA

MAC TM-DFBP-1DA 82A-EC-CKA-TM-DAAP-1DA 24 VDC Valve 25 to 150 PSI TMDFBP1DA

Macromatic SS 76222-05 Timing Relay 120 VAC/DC .3-10 Sec. SS76222-05 SS7622205

Madison 2A551 Liquid Level Switch

Magnaloy Coupling M400 Model 400 1 x 5/16 Inch M40010010S  (TB)

Magnecraft 70-784D14-1 Relay Base 70-784D-1 70784D141

Magnecraft 781XAXML-120VAC 120 VAC Coil Pilot Relay 781XAXML

Magnecraft 782XDX1C 24 VAC Coil Pilot Relay

Magnecraft 782XDXH10-120VAC 120 VAC Coil Relay 782XDXH10120VAC KHS-17A11-120

Magnecraft 784XDXM4L 24 VDC Pilot Cube Relay

Magnecraft W250ACPX-14 120 VAC Coil Pilot Relay W250ACPX14

Magnecraft W6125ASX-1 90-280 VAC Solid State Relay W6125ASX1

Magnetek Century E-Plus 8-364353-01 1 HP 1745 RPM 230/460 VAC Motor 836435301

Magnetek CIMR-G5M4011 28.6 Amp 460 VAC 3 P VFD Drive GPD 515 GPD515 CIMRG5M4011

Magnetek DS317 15 HP 380-460 VAC 3 Phase GPD503 Motor Drive GPD 503 GPD503DS317

Magnetek GPD 502 Lancer L711 20 HP 72 Amp 200-230 VAC 3 Phase GPD502

Magnetek GPD506V-B052 52 Amp 380-460 VAC 3 Phase VFD Motor Drive GPD 506 GPD506

Magnetek Triad F-261U Transformer 24 VCT 8 A F261U

Magnetek Triad N-66A Isolation Transformer 230/115 V Primary N66A

Magnetisch-Induktiver Electromagnetic Flowmeter 24 VAC/ 15 VDC DN10 PN16 1.4571

Magnum TB200HB-10 Terminal Strip High Barrier TB200HB10

Magnum TB200HB-20 Terminal Strip High Barrier TB200HB20

Mallory PSU3030 Capacitor 30-36 MFD 330 VAC 235-0133-02

Mallory Sonalert SC110EJ Signaling Device Alarm (TB)

Mallory Sonalert SC110J Signaling Device Alarm 30-120 VAC

Mallory Sonalert SC110N Signaling Device Alarm

Mallory Sonalert SC110N Signaling Device Alarm 30-120 VAC

Mallory Sonalert SC110NJ Signaling Device Alarm 30-120 VAC

Mallory Sonalert SC110NP Signaling Device Alarm

Mallory Sonalert SC628AD Signaling Device Alarm 6 - 28 VDC

Mallory Sonalert SC628ANJ Signaling Device Alarm

Manchester 203-108 Tool Holder 203108

Manchester 203-115 Tool Holder 203115

Maple Systems HMI520T Silver Series 12-24 VDC Touch Operator Screen

Maple Systems HMI520T Silver Series 12-24 VDC Touch Operator Screen w/ Software

Marathon 1333595 CH 3 Pole Tap Block 600 V 420 Amp 1333595CH

Marathon 1402401 2 Pole Tap Distribution Block 600 V 175 Amp

Marathon 1411400 1 Pole Tap Distribution Block 600 V 115 Amp

Marathon 1422570 2 Pole Tap Distribution Block 600 V 175 Amp

Marathon 1422570 2 Pole Tap Distribution Block 600 V 175 Amp w/ Cover

Marathon 1423570 3 Pole Tap Distribution Block 600 V 175 Amp

Marathon 1423570 3 Pole Tap Distribution Block 600 V 175 Amp w/ Cover

Marathon 1423970 3 Pole Tap Distribution Block 600 V 175 Amp

Marathon 1431555 1 Pole Tap Distribution Block 600 V 350 Amp

Marathon 1432552 2 Pole Tap Distribution Block 600 V 335 Amp

Marathon 1442560 2 Pole Tap Distribution Block 600 V

Marathon 1443560 3 Pole Tap Distribution Block 600 V 335 Amp

Marathon 1443560 3 Pole Tap Distribution Block 600 V 335 Amp w/ Cover

Marathon 1453552 3 Pole Tap Block 600 V 380 Amp

Marathon 1WD48A11T402B P 11513 48Y 1/4 HP 1125 RPM 115/208-230 VAC 1 Phase Motor

Marathon 30A1B1 1 Pole Fuse Holder 30 Amp 600 V 30A1B

Marathon 6CC30A2SPQ 2 Pole Fuse Holder 600 V 30 Amp (TSC)

Marathon 6F30/60A 3 Pole Fuse Holder 600 V 30 Amp 6F3060A

Marathon 6F30A1S 1 Pole Fuse Holder 30 Amp 600 V 4100024 6F30A1

Marathon 6F30A2SP 2 Pole Fuse Holder 600 V 30 Amp 6F30A2

Marathon 6M30A1SPQ 1 Pole Fuse Holder 30 Amp 600 V 6M30A1

Marathon 6M30A2B 2 Pole Fuse Holder 600 V 30 Amp 6M30A2

Marathon 6M30A2SP 2 Pole Fuse Holder 600 V 30 Amp 6M30A2

Marathon 6M30A2SQ 2 Pole Fuse Holder 600 V 30 Amp 6M30A2

Marathon 6M30A3SP 3 Pole Fuse Holder 600 V 30 Amp 6M30A3

Marathon 6M30A3SQ 3 Pole Fuse Holder 600 V 30 Amp 6M30A3

Marathon 6R30A2B 2 Pole Fuse Holder 600 V 30 Amp 6R30A2

Marathon 6R30A3B 3 Pole Fuse Holder 600 V 30 Amp 6R30A

Marathon 6SM30AI-B 1 Pole Fuse Holder 600 V 30 Amp 6SM30AIB

Marathon F200A3BE 3 Pole Fuse Holder 4113300 200 Amp 250 V

Marathon F30A 30 Amp 250 V 2 Pole Fuse Holder F30A

Marathon F30A1SP 1 Pole Fuse Holder 30 Amp F30A1

Marathon F30A2B 2 Pole Fuse Holder F30A2

Marathon F30A2SP 2 Pole Fuse Holder 250 V 30 Amp F30A2

Marathon F30A3S 3 Pole Fuse Holder F30A3

Marathon G581 208-230/460 VAC 1725 RPM 56C-65 1/2 HP Motor 7VF56T17F5321F P

Marathon G585 208-230/460 VAC 1725 RPM 56HC-85 2 HP Motor 6VL56T17F5325F P

Marathon Motor Pump 113.000.372 075.00709.00 3375K162 1 HP 3500 RPM 12S SF

Marathon Motor Pump 3002K499 815938 M98 Motor Pump 3500 RPM 1 HP 200-230/460

Marathon Motor Pump 3377K114 A0554904 137.001.122 3450 RP 3 HP 208-230/460 56CYZ

Marathon Motor Pump 3377K150 075.01434.00 137.001.136 3450 RPM 1 HP 208-230/460

Marathon R30A1SP 1 1 Pole Fuse Holder R30A1SP1 (TSC)