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描述

140ACI03000

PLC自动控制系统可靠性问题进行了较深入研究，提出了提高系统可靠性运行的方法。实践证明这些方法的采用对提高系统的可靠性是行之有效的。
    可编程控制器由于抗干扰能力强，可靠性高，编程简单，性能价格比高，在工业控制领域得到越来越广泛应用。
    工业年月机作为中央控制单元，配有组态软件，选用大屏幕实时监视界面，实现各控制点的动态显示、数据修改、故障诊断、自动报警，还可显示查询历史事件记录，系统各主要部件累计运行时间，各装置工艺流程图，各装置结构图等。中央控制单元和下位机PLC之间采用串行通讯方式进行数据交换，通常距离在1000m以内选用485双绞线通讯方式，较常距离可选用光纤通讯，更长距离也可选用无线通讯方式。下位机选用PLC控制，根据控制对象的多少，控制对象的范围，可选用一台或多台PLC进行控制，PLC之间数据交换是利用内部链接寄存器，实现数据交换和共享。由于PLC对现场进实时监控具有很高的可靠性，且编程简单、灵活，因此越来越受到人们重视。
    控制系统可靠性降低的主要原因
    虽然工业控制机和可编程控制器本身都具有很高的可靠性，但如果输入给PLC的开关量信号出现错误，模拟量信号出现较大偏差，PLC输出口控制的执行机构没有按要求动作，这些都可能使控制过程出错，造成无法挽回的经济损失。
    影响现场输入给PLC信号出错的主要原因有：
    造成传输信号线短路或断路（由于机械拉扯，线路自身老化，特别是鼠害），当传输信号线出故障时，现场信号无法传送给PLC，造成控制出错；
    机械触点抖动，现场触点虽然只闭合一次，PLC却认为闭合了多次，虽然硬件加了滤波电路，软件增加微分指令，但由于PLC扫描周期太短，仍可能在计数、累加、移位等指令中出错，出现错误控制结果；
    现场变送器，机械开关自身出故障，如触点接触不良，变送器反映现场非电量偏差较大或不能正常工作等，这些故障同样会使控制系统不能正常工作。
    影响执行机构出错的主要原因有：
    控制负载的接触不能可靠动作，虽然PLC发出了动作指令，但执行机构并没按要求动作；
    控制变频器起动，由于变频器自身故障，变频器所带电机并没按要求工作；
    各种电动阀、电磁阀该开的没能打开，该关的没能关到位，由于执行机构没能按PLC的控制要求动作，使系统无法正常工作，降低了系统可靠性。要提高整个控制系统的可靠性，必须提高输入信号的可靠性和执行机构动作的准确性，否则PLC应能及时发现问题，用声光等报警办法提示给操作人员，尽快排除故障，让系统安全、可靠、正确地工作。
    设计完善的故障报警系统
    在自动控制系统的设计中我们设计了3级故障显示报警系统，1级设置在控制现场各控制柜面板，用指示灯指示设备正常运行和故障情况，当设备正常运行时对应指示灯亮，当该设备运行有故障时指示灯以1Hz的频率闪烁。为防止指示灯灯泡损坏不能正确反映设备工作情况，专门设置了故障复位/灯测试按钮，系统运行任何时间持续按该按钮3s，所有指示灯应全部点亮，如果这时有指示等不亮说明该指示灯已坏，应立即更换，改按钮复位后指示灯仍按原工作状态显示设备工作状态。2级故障显示设置在中心控制室大屏幕监视器上，当设备出现故障时，有文字显示故障类型，工艺流程图上对应的设备闪烁，历史事件表中将记录该故障。3级故障显示设置在中心控制室信号箱内，当设备出现故障时，信号箱将用声、光报警方式提示工作人员，及时处理故障。在处理故障时，又将故障进行分类，有些故障是要求系统停止运行的，但有些故障对系统工作影响不大，系统可带故障运行，故障可在运行中排除，这样就大大减少整个系统停止运行时间，提高系统可靠性运行水平。
    输入信号可靠性研究
    要提高现场输入给PLC信号的可靠性，首先要选择可靠性较高的变送器和各种开关，防止各种原因引起传送信号线短路、断路或接触不良。其次在程序设计时增加数字滤波程序，增加输入信号的可信性。
    在现场输入触点后加一定时器，定时时间根据触点抖动情况和系统要的响应速度确定，一般在几十ms，这样可保证触点确实稳定闭合后，才有其它响应。模拟信号滤波可采用图2b程序设计方法，对现场模拟信号连续采样3次，采样间隔由A/D转换速度和该模拟信号变化速率决定。3次采样数据分别存放在数据寄存器DT10、DT11、DT12中，当最后1次采样结束后利用数据比较、数据交换指令、数据段比较指令去掉最大和最小值，保留中间值作为本次采样结果存放在数据寄存器DT0中。
    提高读入PLC现场信号的可靠性还可利用控制系统自身特点，利用信号之间关系来判断信号的可信程度。如进行液位控制，由于储罐的尺寸是已知的，进液或出液的阀门开度和压力是已知的，在一定时间里罐内液体变化高度大约在什么范围是知道的，如果这时液位计送给PLC的数据和估算液位高度相差较大，判断可能是液位计故障，通过故障报警系统通知操作人员检查该液位计。又如各储罐有上下液位极限保护，当开关动作时发出信号给PLC，这个信号是否真实可靠，在程序设计时我们将这信号和该罐液位计信号对比，如果液位计读数也在极限位置，说明该信号是真实的；如果液位计读数不在极限位置，判断可能是液位极限开关故障或传送信号线路故障，同样通过报警系统通知操作人员处理该故障。由于在程序设计时采用了上述方法，大大提高了输入信号的可靠。
    执行机构可靠性研究
    当现场的信号准确地输入给PLC后，PLC执行程序，将结果通过执行机构对现场装置进行调节、控制。怎样保证执行机构按控制要求工作，当执行机构没有按要求工作，怎样发现故障？我们采取以下措施：当负载由接触器控制时，启动或停止这类负载转为对接触器线圈控制，启动时接触器是否可靠吸合，停止时接触器是否可靠释放，这是我们关心的。
    X0为接触器动作条件，Y0为控制线圈输出，X1为引回到PLC输入端的接触器辅助常开触点，定时器定时时间大于接触器动作时间。R0为设定的故障位，R0为ON表示有故障，做报警处理；R0为OFF表示无故障。故障具有记忆功能，由故障复位按钮清除。
    当开启或关闭电动阀门时，根据阀门开启、关闭时间不同，设置延时时间，经过延时检测开到位或关到位信号，如果这些信号不能按时准确返回给PLC，说明阀可能有故障，做阀故障报警处理。程序设计如图3b所示。X2为阀门开启条件，Y1为控制阀动作输出，定时器定时时间大于阀开启到位时间，X3为阀到位返回信号，R1为阀故障位。
    我们在胜利油田胜利采油厂胜砣注聚站自动控制系统设计中采用了以上方法，经过近2年的运行证明这些方法的采用对提高系统可靠性运行是行之有效的。

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GE 12-IAC66K58A Time Overcurrent Relay 12IAC66K58A New
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GE TOTAL LIGHTING CONTROL 59YYY 24 RELAY DIMMING PANEL
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**NIB** GE Overload Relay RTN3F
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GE FANUC IC660EBR101L ELECTRIC MODULE RELAY ***RFB***
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GE Time Overcurrent Relay Meter Model 12IAC51B4A, 4 EA.
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12XCA28A , GE RELAY TEST PLUG
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GE MULTILIN VOLTAGE MANAGEMENT RELAY MIVII1000E00HI
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GE 124Y0B2804A Time Delay Relay 600VAC/DC NEW NNB
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GE TYPE HEA61 12HEA61B236X2 125VDC MULTI CONTACT RELAY
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GE General Electric RELAY BOARD 193X278AAG03 193X278AA
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GE 12IAC53A803A/IA​C 53A803A RELAY **NNB**
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GE DIFCA5B Digital Time Overcurrent Relay DIFCA5A
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GE 12IAC51A802A Time Overcurrent Relay IAC51A802A New
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GE CLO1A310T1 CONTACTOR / RT1- O/L RELAY LIQUIDATION
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NIB GE 3S7505BR520A5 Lamp Burnout Relay
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General Electric GE 3S2791G138A4 Relay USED Free Ship
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General Electric GE 3S2791G138K4 Relay USED Free Ship
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GE SENSITIVE RELAY BOARD 193X704AAG01
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GE TIME OVERCURRENT RELAY 12IAC53A801A *NEW*
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GE DIFCA5B DIGITAL 5A TIME OVERCURRENT RELAY PROTECTION
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NEW GE AUXILIARY RELAY 12HEA61C242X2
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GE Time Overcurrent Relay Model 12IAC51B4A IAC NEW
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GE MILTINLIN 269PLUS-D/O-233​-120N-120 MOTOR MGR RELAY
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GE Over Current Relay MIFPA55E100H00C 50/60 Hz (NIB)
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GE MULTILIN SR735 SR735-5-5-HI-48​5 FEEDER RELAY
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GE Multilin Motor Management Relay 269 PLUS
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GE/MULTILIN 369-HI-R-M-0-0 MOTOR RELAY *XLNT*
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GE Feeder Protection Relay DFP200 DFP251MHE1BB02 w/o ct
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GE Reveal Under Frequency Meter Relay 12SFF31A1A NIB
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GE MULTILIN 750 PROTECTIVE RELAY 750-P5-G5-D5-HI​-A2-OR
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GE GENERAL ELECTRIC 239-H MOTOR PROTECTION RELAY 1/2HP
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GE GENERAL ELECTRIC IC3655A100A SLIP GUARD RELAY MODULE
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GE 750-P5-G5-S5-HI​-A20-R SR750 Feeder Management Relay
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GE 750-P5-G5-S5-HI​-A20-R SR750 Feeder Management Relay
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GE High impedance Differential relay type PVD 21D1A
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GE Type HFA Auxiliary Relay SR768574 115V 50Hz (NIB)
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GE Voltage Relay Mod #TOV5013B110H00​C (NIB)
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GE Multilin 750 Feeder Protection Management Relay Unit
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NEW GE STATIC FREQUENCY RELAY 12SFF31A1A
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169PLUS-10C-120 Ge Multilin Motor Mgt. Relay
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NEW GE DIFFERENTIAL RELAY 12BDD19B1A VOLT 125 – 250 VDC
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GE 735-5-5-HI-485 SR735 Feeder Protection Relay
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NEW GE TYPE BDD DIFFERENTIAL RELAY 12BDD16B1A
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GE MDP3120000DA Time Overcurrent Relay MDP 3120000DA
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GE PC Board 269PLUS-120N120 Motor Relay PC Card (3249)
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GE Multilin 735 Feeder Protection Relay Unit
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NEW GE FANUC IC655MDL581A OUTPUT MODULE RELAY 32PT
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GE Multilin HAA Auxiliary Annunciator Relay HAA13B1A DC
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GE Drive Terminal Relay Card 531X171TMAAFG2 NIB
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GE 369-HI-R-M-F-0 MULTILIN MOTOR MANAGEMENT RELAY
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NEW GE MULTILIN VOLTAGE MANAGEMENT RELAY 2 PACK MIVII
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GE LIGHTING CONTROLS RINTER2424 24 RELAY PANEL INTERIOR
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NEW GE ELECTRIC MULTILIN MOTOR PROTECTION RELAY 122 NR
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GE 239 Motor protection Relay “NIB”
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GE General Electric 750 Feeder Management Relay 750-P5
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GE Fanuc IC660BBR100N GENIUS NC RELAY BLOCK 115/230VAC
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GE Differential Relay Model 12STD15C3A – New Old Stock
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NEW GE IC3600 RELAY DRIVER IC3600LRDH1B1D IC3600LRDH1
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GE Drive Relay Board 193X562ACG06 NIB
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GE Restraint Relay IFCV-TOC IFCV51AD1A NIB
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GE Solid State Ground Break Relay, TGMR1D, NIB
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GE TIME OVERCURRENT RELAY 12SFC151D1A
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GE 12CFV12A4A NEW POLYPHASE UNDERVOLTAGE RELAY
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GE RELAY CIRCUIT BOARD 193X703ADG04
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GE Undervoltage Relay Type NGV 12NGV15A22 208V
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GE IJS 52D1A Synchronism Check Relay IJS52D1A
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$296.00
GE Transformer Overcurrent Relay TOC7102B201C10 MSI129
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GE 12IFC53B1A Inverse Time Overcurrent Relay IFC53B1A
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GE 12IFC53A2A Inverse Time Overcurrent Relay IFC53A2A
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NIB GE STATIC BREAKER BACK-UP RELAY 3661034CFR SBC 10 A
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12XLA12A1 , GE RELAY TEST PLUG
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GE- NIB Photoelectric Relay Model #3S7505KP501A1
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NEW General Electric GE Relay Test Plug 12XLA12A1 NR!
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GE INFOGRAPHICS RRM16-E1L 16 OUTPUT RELAYS NEW IN BOX
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GE GENERAL ELECTRIC 12IAC66C56A TIME OVERCURRENT RELAY
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(10) GE Overload Relays
Ref: (10) GE Overload Relays
GE IAC 53A803A Time-Overcurren​t Relay NEW NIB
Ref: GE IAC 53A803A Time-Overcurren​t Relay NEW NIB
GE Auxiliary Relay HAA 15H2F NIB
Ref: GE Auxiliary Relay HAA 15H2F NIB
GE IAC 51B808A Time-Overcurren​t Relay NEW NIB
Ref: GE IAC 51B808A Time-Overcurren​t Relay NEW NIB
GE 12HFC21B1A Instantaneous Overcurrent Relay HFC21B1A
Ref: GE 12HFC21B1A Instantaneous Overcurrent Relay HFC21B1A
GE General Electric DC Contactor Relay 150 DC Amps 600V
Ref: GE General Electric DC Contactor Relay 150 DC Amps 600V
NEW GE AUXILIARY RELAY 12HFA54E187F
Ref: NEW GE AUXILIARY RELAY 12HFA54E187F
GE INFOGRAPHICS RIM16-E1L 16 INPUT RELAYS NEW IN BOX
Ref: GE INFOGRAPHICS RIM16-E1L 16 INPUT RELAYS NEW IN BOX
GE FANUC OUTPUT RELAY PLUG-IN MODULE MODEL IC610MDL182A
Ref: GE FANUC OUTPUT RELAY PLUG-IN MODULE MODEL IC610MDL182A
NEW GE AUXILIARY RELAY 12HFA51A42H
Ref: NEW GE AUXILIARY RELAY 12HFA51A42H
GE CASI RUSCO 110078001 MICRO/5 16DOR 16 RELAYS 16DO
Ref: GE CASI RUSCO 110078001 MICRO/5 16DOR 16 RELAYS 16DO
GE Fanuc IC-697-MDL-653/​IC697MDL653 Input Relay
Ref: GE Fanuc IC-697-MDL-653/​IC697MDL653 Input Relay
GE Transformer Overcurrent Relay TOC7102B201C00 MSI129
Ref: GE Transformer Overcurrent Relay TOC7102B201C00 MSI129
NEW GE Fanuc 16 Circuit Relay Output Module IC610MDL182
Ref: NEW GE Fanuc 16 Circuit Relay Output Module IC610MDL182
GE CR2810A14AG102 10A 600V 8 N.O. P Machine Tool Relay
Ref: GE CR2810A14AG102 10A 600V 8 N.O. P Machine Tool Relay
GE RTN3E Manual Reset Overload Relay CK75C-CK08C NEW
Ref: GE RTN3E Manual Reset Overload Relay CK75C-CK08C NEW
GE Contactor CL03-45 CL45A Reversing relay 480v NEW
Ref: GE Contactor CL03-45 CL45A Reversing relay 480v NEW
GE FANUC IC200MDD845C MIXED OUT RELAY 8PT IN 16 PT NEW
Ref: GE FANUC IC200MDD845C MIXED OUT RELAY 8PT IN 16 PT NEW
GE Auxiliary Relay Model 12HFA51A42H Type HFA
Ref: GE Auxiliary Relay Model 12HFA51A42H Type HFA
NEW GE 12HFA51A49F, HFA MULTICONTACT AUXILIARY RELAY
Ref: NEW GE 12HFA51A49F, HFA MULTICONTACT AUXILIARY RELAY
NEW GE Relay 12HFA151A5F Type HFA 24 Volts DC
Ref: NEW GE Relay 12HFA151A5F Type HFA 24 Volts DC
CR120K60041AA GE RELAY, HIGH FIDELITY
Ref: CR120K60041AA GE RELAY, HIGH FIDELITY
SQUARE D AC RELAY OPERATED TIMER # 8501-G040GE
Ref: SQUARE D AC RELAY OPERATED TIMER # 8501-G040GE
GE CR324FXMS SIZE 3/4 SOLID STATE OVERLOAD RELAY NEW
Ref: GE CR324FXMS SIZE 3/4 SOLID STATE OVERLOAD RELAY NEW
GE Fanuc IC610MDL182A Relay Output Module
Ref: GE Fanuc IC610MDL182A Relay Output Module
GE Fanuc IC610MDL180A Relay Output Module
Ref: GE Fanuc IC610MDL180A Relay Output Module
GE Fanuc IC610MDL104A DC Input/Relay Output Module
Ref: GE Fanuc IC610MDL104A DC Input/Relay Output Module
GE GENERAL ELECTRIC RELAY TESTER MODEL 12LA12A1 “NEW”
Ref: GE GENERAL ELECTRIC RELAY TESTER MODEL 12LA12A1 “NEW”
GE TIME 12IAC51B808A OVERCURRENT RELAY 2-16A, 20-160A
Ref: GE TIME 12IAC51B808A OVERCURRENT RELAY 2-16A, 20-160A
GE SIZE 3/4 SOLID STATE OVERLOAD RELAY NEW CR324FXLS
Ref: GE SIZE 3/4 SOLID STATE OVERLOAD RELAY NEW CR324FXLS
NEW GE TIME OVERCURRENT RELAY 12IAC53M101A
Ref: NEW GE TIME OVERCURRENT RELAY 12IAC53M101A
NEW GE INSTANTANEOUS CURRENT RELAY 12PJC11AV1A
Ref: NEW GE INSTANTANEOUS CURRENT RELAY 12PJC11AV1A
NEW GE TIME OVERCURRENT RELAY 12IAC66B1A
Ref: NEW GE TIME OVERCURRENT RELAY 12IAC66B1A
GE MULTILIN 369 MOTOR PROTECTION MANAGEMENT RELAY
Ref: GE MULTILIN 369 MOTOR PROTECTION MANAGEMENT RELAY
GE INFOGRAPHICS RIM16-E00 16 INPUT RELAYS NEW IN BOX
Ref: GE INFOGRAPHICS RIM16-E00 16 INPUT RELAYS NEW IN BOX
VINTAGE- GE PYROMETER 0-2000F TYPE 195 METER RELAY NEW
Ref: VINTAGE- GE PYROMETER 0-2000F TYPE 195 METER RELAY NEW
GE Fanuc Series One relay output IC610MDL182A NEW
Ref: GE Fanuc Series One relay output IC610MDL182A NEW
GE PLC I/O Module DC In/ 8-Relay Out IC610MDL104A
Ref: GE PLC I/O Module DC In/ 8-Relay Out IC610MDL104A
GE GENERAL ELECTRIC HFA51 RELAY HFA51A42H HFA NEW
Ref: GE GENERAL ELECTRIC HFA51 RELAY HFA51A42H HFA NEW
$199.95
GE CR324E310F OVERLOAD RELAY 90A 3 POLE 600VAC 250VDC
Ref: GE CR324E310F OVERLOAD RELAY 90A 3 POLE 600VAC 250VDC
NEW GE Relay Model 12HFA51A49H HFA 115V GEF-2757E
Ref: NEW GE Relay Model 12HFA51A49H HFA 115V GEF-2757E
GE/MULTILIN 130 MOTOR PROTECTION RELAY *XLNT*
Ref: GE/MULTILIN 130 MOTOR PROTECTION RELAY *XLNT*
GE 531X137TRGACG1 TB RELAY BOARD ***XLNT***
Ref: GE 531X137TRGACG1 TB RELAY BOARD ***XLNT***
GE IC300DQM902B IC 300 DQM 902 B 20 Point Relay Output
Ref: GE IC300DQM902B IC 300 DQM 902 B 20 Point Relay Output
GE Fanuc 90/30 IC693MDL940E Relay N.O. Output Module
Ref: GE Fanuc 90/30 IC693MDL940E Relay N.O. Output Module
Brand new GE oven ERC/LWR oven relay part # WB27T10971
Ref: Brand new GE oven ERC/LWR oven relay part # WB27T10971
SQUARE D AC RELAY OPERATED TIMER G0-40-GE CLASS 8501
Ref: SQUARE D AC RELAY OPERATED TIMER G0-40-GE CLASS 8501
NIB GE PILOT WIRE AUX RELAY 12NAA99AM1A 125 VDC
Ref: NIB GE PILOT WIRE AUX RELAY 12NAA99AM1A 125 VDC
New Sealed GE FANUC IC693MDL930G 4A 8PT OUTPUT RELAY
Ref: New Sealed GE FANUC IC693MDL930G 4A 8PT OUTPUT RELAY
NIB GE AUXILIARY RELAY 12HFA151A1F TYPE HFA 250 V
Ref: NIB GE AUXILIARY RELAY 12HFA151A1F TYPE HFA 250 V
GE CR120BL060 600V Latched Relay CR120-L-060 NNB
Ref: GE CR120BL060 600V Latched Relay CR120-L-060 NNB
GE General Electric Relay Model 12H6A11B2 125 VDC
Ref: GE General Electric Relay Model 12H6A11B2 125 VDC
GE Fanuc IDEC IZBARL IBRC410 IBRC 410 RELAY BARRIER
Ref: GE Fanuc IDEC IZBARL IBRC410 IBRC 410 RELAY BARRIER
GE 12HFA51A42/HFA-​51A42 AUXILIARY RELAY ***NIB***
Ref: GE 12HFA51A42/HFA-​51A42 AUXILIARY RELAY ***NIB***
GE PNEUMATIC TIME DELAY RELAY CR2820B110AA2 115V NEW
Ref: GE PNEUMATIC TIME DELAY RELAY CR2820B110AA2 115V NEW
GE CR324FXMS SIZE 3/4 SOLID STATE OVERLOAD RELAY NEW
Ref: GE CR324FXMS SIZE 3/4 SOLID STATE OVERLOAD RELAY NEW
NEW – Electromate Electrical Relay Box w/3 GE Relays
Ref: NEW – Electromate Electrical Relay Box w/3 GE Relays
GE 3S7511RS575A6 Resistive sensitive relay NEW NIB
Ref: GE 3S7511RS575A6 Resistive sensitive relay NEW NIB
GE CR2820B420AA42 Pneumatic Time Delay Relay NEW NIB
Ref: GE CR2820B420AA42 Pneumatic Time Delay Relay NEW NIB
New GE Fanuc IC693MDL930F Output Relay Module *Sealed*
Ref: New GE Fanuc IC693MDL930F Output Relay Module *Sealed*
GE CR120B01502 Industrial Relay, NOS
Ref: GE CR120B01502 Industrial Relay, NOS
GE FANUC IC697MDL940 OUTPUT RELAY MODULE 120VAC 16PT
Ref: GE FANUC IC697MDL940 OUTPUT RELAY MODULE 120VAC 16PT
GE CR2820B-110AA2 Pneumatic Time Delay Relay New CR2820
Ref: GE CR2820B-110AA2 Pneumatic Time Delay Relay New CR2820
GE FANUC IC693MDL940H OUTPUT MODULE RELAY 2AMP 16POINT
Ref: GE FANUC IC693MDL940H OUTPUT MODULE RELAY 2AMP 16POINT
GE 12HGA17C52/HGA1​7C52 AUXILIARY RELAY ***NIB***
Ref: GE 12HGA17C52/HGA1​7C52 AUXILIARY RELAY ***NIB***
NIB GE RELAY HFA 12HFA51A49F
Ref: NIB GE RELAY HFA 12HFA51A49F
GE Time Overcurrent Relay Type IAC Model 12IAC51B4A New
Ref: GE Time Overcurrent Relay Type IAC Model 12IAC51B4A New
GE FANUC IC693MDL940E OUTPUT MODULE RELAY 2A 16PT
Ref: GE FANUC IC693MDL940E OUTPUT MODULE RELAY 2A 16PT
GE Fanuc Series 90 Micro IC693UDR005CP1 24VDC In Relay
Ref: GE Fanuc Series 90 Micro IC693UDR005CP1 24VDC In Relay
GE CR324HXTS SIZE 6 SOLID STATE OVERLOAD RELAY NEW
Ref: GE CR324HXTS SIZE 6 SOLID STATE OVERLOAD RELAY NEW
UNUSED GE VOLTAGE RELAY 12IAV51A1AF
Ref: UNUSED GE VOLTAGE RELAY 12IAV51A1AF
GE 115 V 60 AMP AUXILIARY RELAY MODEL 12HGA11J70
Ref: GE 115 V 60 AMP AUXILIARY RELAY MODEL 12HGA11J70
GE General Electric RTN3B Overload Relay 55-80a amp NEW
Ref: GE General Electric RTN3B Overload Relay 55-80a amp NEW
GE General Electric RTN3B Overload Relay 55-80a amp NEW
Ref: GE General Electric RTN3B Overload Relay 55-80a amp NEW
**NIB** GE Electronic Relay RMM2AR
Ref: **NIB** GE Electronic Relay RMM2AR
RRDC12 GE RELAY DRIVER BOARD
Ref: RRDC12 GE RELAY DRIVER BOARD
GE IC610MDL180A Relay Output Module 8-Channel
Ref: GE IC610MDL180A Relay Output Module 8-Channel
NEW GE PHASE SEQUENCE & UNDERVOLTAGE RELAY 12ICR54A1A
Ref: NEW GE PHASE SEQUENCE & UNDERVOLTAGE RELAY 12ICR54A1A
(5) NEW GE Federal Pacif Relay Breaker 12HFA51A49H $149
Ref: (5) NEW GE Federal Pacif Relay Breaker 12HFA51A49H $149
10 NEW GE OVERLOAD RELAY CR4G2WYY2+CR4XG​6 23-30 Free S.
Ref: 10 NEW GE OVERLOAD RELAY CR4G2WYY2+CR4XG​6 23-30 Free S.
GE 90-30 IC693MDL940H OUTPUT PLC MODULE RELAY 2A 16pt
Ref: GE 90-30 IC693MDL940H OUTPUT PLC MODULE RELAY 2A 16pt
GE Smart Relay Block SRBA120A10A 10A 120V NEW IN BOX
Ref: GE Smart Relay Block SRBA120A10A 10A 120V NEW IN BOX
GE Overload Relay CR324C310A Manual Reset Only
Ref: GE Overload Relay CR324C310A Manual Reset Only
GE CR122A04702AA Pneumatic Time Delay Relay NEW
Ref: GE CR122A04702AA Pneumatic Time Delay Relay NEW
GE CR120A02202AA 300V Relay NEW
Ref: GE CR120A02202AA 300V Relay NEW
General Electric GE HFA relay 12HFA51A42F
Ref: General Electric GE HFA relay 12HFA51A42F
GE FANUC IC693MDL940C OUTPUT RELAY MODULE ****XLNT****
Ref: GE FANUC IC693MDL940C OUTPUT RELAY MODULE ****XLNT****
$149.00
NIB GE AUXILIARY RELAY 12HGA111A1F HGA 250 V
Ref: NIB GE AUXILIARY RELAY 12HGA111A1F HGA 250 V
GE FANUC IC693MDL940F OUTPUT RELAY MODULE ****XLNT****
Ref: GE FANUC IC693MDL940F OUTPUT RELAY MODULE ****XLNT****
GE 10 PIN RELAY CR245C111A
Ref: GE 10 PIN RELAY CR245C111A
New GE Automation Panel Relay Driver Card, RRDC1
Ref: New GE Automation Panel Relay Driver Card, RRDC1
GE CR124Y0A2829A RELAY 5A 600VAC CR124Y-0A2829A NEW
Ref: GE CR124Y0A2829A RELAY 5A 600VAC CR124Y-0A2829A NEW
GE General Electric GE IAC 51B806A Industrial Relay
Ref: GE General Electric GE IAC 51B806A Industrial Relay
NEW GE Fanuc 8 Circuit Relay Output Module IC610MDL180A
Ref: NEW GE Fanuc 8 Circuit Relay Output Module IC610MDL180A
GE CR120BD03241 Industrial Relay 125VDC Coil 10A 600V
Ref: GE CR120BD03241 Industrial Relay 125VDC Coil 10A 600V
GE FANUC IC693MDL940G OUTPUT RELAY MODULE ****XLNT****
Ref: GE FANUC IC693MDL940G OUTPUT RELAY MODULE ****XLNT****
GE Fanuc PLC Relay Output Module IC693MDL940G
Ref: GE Fanuc PLC Relay Output Module IC693MDL940G
BF914K GE FANUC PLC Card Relay Out Module
Ref: BF914K GE FANUC PLC Card Relay Out Module
Fanuc (GE) #IC610-MDL180A Relay Output 8 Cir (U) 5/5/43
Ref: Fanuc (GE) #IC610-MDL180A Relay Output 8 Cir (U) 5/5/43
GE CR324DXHS SIZE 2 SOLID STATE OVERLOAD RELAY NEW
Ref: GE CR324DXHS SIZE 2 SOLID STATE OVERLOAD RELAY NEW
GE CR324DXJS SIZE 2 SOLID STATE OVERLOAD RELAY NEW
Ref: GE CR324DXJS SIZE 2 SOLID STATE OVERLOAD RELAY NEW
GE FANUC MIXED I/O MODULE 24 VDC, IN=RELAY OUT=8 PT NEW
Ref: GE FANUC MIXED I/O MODULE 24 VDC, IN=RELAY OUT=8 PT NEW
GE FANUC IC610MDL182A Relay Output Model 16 ! NEW !
Ref: GE FANUC IC610MDL182A Relay Output Model 16 ! NEW !
GE FANUC OUTPUT MODULE RELAY 16-POINT IC693MDL940C
Ref: GE FANUC OUTPUT MODULE RELAY 16-POINT IC693MDL940C
GE Fanuc IC693MDL940C Output Relay Module
Ref: GE Fanuc IC693MDL940C Output Relay Module
GE Power Board Relay Power Supply WB23T10023 NEW
Ref: GE Power Board Relay Power Supply WB23T10023 NEW
GE IC610MDL180A 24VDC RELAY OUTPUT MDL/8 I/O MODULE
Ref: GE IC610MDL180A 24VDC RELAY OUTPUT MDL/8 I/O MODULE
GE FANUC IC693MDL940A OUTPUT RELAY MODULE ****XLNT****
Ref: GE FANUC IC693MDL940A OUTPUT RELAY MODULE ****XLNT****
NEW GE AUXILIARY RELAY 12HEA61ARU226X2 125V
Ref: NEW GE AUXILIARY RELAY 12HEA61ARU226X2 125V
GE FANUC IC660TBR101K TERMINAL ASSEMBLY RELAY ***RFB***
Ref: GE FANUC IC660TBR101K TERMINAL ASSEMBLY RELAY ***RFB***
GE Range Power Relay Board WB23T10024
Ref: GE Range Power Relay Board WB23T10024
GE General Electric Relay CR120A04002AA NEW
Ref: GE General Electric Relay CR120A04002AA NEW
GE CONTROL NEMA 4 TIME DELAY UNDERVOLTAGE RELAY NIB
Ref: GE CONTROL NEMA 4 TIME DELAY UNDERVOLTAGE RELAY NIB
GE 4PDT 2.0 AMP 26.5V DC MIL SPEC SEALED RELAY
Ref: GE 4PDT 2.0 AMP 26.5V DC MIL SPEC SEALED RELAY
New GE Fanuc IC693MDL930 8 Pt. Iso. Relay Out 90-30 NIB
Ref: New GE Fanuc IC693MDL930 8 Pt. Iso. Relay Out 90-30 NIB
GE Time Overcurrent Relay Model 12IAC51B4R IAC
Ref: GE Time Overcurrent Relay Model 12IAC51B4R IAC
GE CR324CXFS SIZE 0/1 SOLID STATE OVERLOAD RELAY NEW
Ref: GE CR324CXFS SIZE 0/1 SOLID STATE OVERLOAD RELAY NEW
(2) GE Overload Relay Manual Resets
Ref: (2) GE Overload Relay Manual Resets
GE Funac 90-30 Output Relay, P/N: IC693MDL940D, 16 Pt
Ref: GE Funac 90-30 Output Relay, P/N: IC693MDL940D, 16 Pt
NEW CR120C24802 GE INDUSTRIAL RELAY 300V 10A 120V 8P
Ref: NEW CR120C24802 GE INDUSTRIAL RELAY 300V 10A 120V 8P
GE FANUC IC693MDL940C OUTPUT RELAY MODULE ****XLNT****
Ref: GE FANUC IC693MDL940C OUTPUT RELAY MODULE ****XLNT****
GE 120B-080** 600V INDUSTRIAL RELAY ***NNB***
Ref: GE 120B-080** 600V INDUSTRIAL RELAY ***NNB***
GE SMART RELAY LOADER PART NO. SRLA
Ref: GE SMART RELAY LOADER PART NO. SRLA
GE CR324CXES SIZE 0/1 SOLID STATE OVERLOAD RELAY NEW
Ref: GE CR324CXES SIZE 0/1 SOLID STATE OVERLOAD RELAY NEW
GE CR324CXHS SIZE 0/1 SOLID STATE OVERLOAD RELAY NEW
Ref: GE CR324CXHS SIZE 0/1 SOLID STATE OVERLOAD RELAY NEW
GE CR324CXCS SIZE 6 SOLID STATE OVERLOAD RELAY NEW
Ref: GE CR324CXCS SIZE 6 SOLID STATE OVERLOAD RELAY NEW
GE CR324CXDS SIZE 0/1 SOLID STATE OVERLOAD RELAY NEW
Ref: GE CR324CXDS SIZE 0/1 SOLID STATE OVERLOAD RELAY NEW
GE CR224C310A Overload Relay 3 Leg Block
Ref: GE CR224C310A Overload Relay 3 Leg Block
GE Relay Drive Card
Ref: GE Relay Drive Card
GE SMART RELAY BLOCK SRBA024D10A INPUT SIGNAL 24VDC
Ref: GE SMART RELAY BLOCK SRBA024D10A INPUT SIGNAL 24VDC
GE CR122B040120A Pneumatic Timer Relay 0.2-60s NEW NNB
Ref: GE CR122B040120A Pneumatic Timer Relay 0.2-60s NEW NNB
GE Fanuc IC630MDL380A Relay Output Module 16 Circuits
Ref: GE Fanuc IC630MDL380A Relay Output Module 16 Circuits
4 GE Overload Manual Reset Relay # CR324C310F; *A12
Ref: 4 GE Overload Manual Reset Relay # CR324C310F; *A12
GE Fanuc IC693MDL940D Output Module Relay #7090
Ref: GE Fanuc IC693MDL940D Output Module Relay #7090
GE CR120A08022AA, 300V Relay, Series A, NOS

关键词： PLC

选择深圳长欣，选择放心，售后无忧大量现货，当天顺丰发货！
主营：本特利，英维思，伍德沃德，福克斯波罗、西屋、瑞恩、施耐德莫迪康、ABB、AB、西门子、摩托罗拉、GE发那科、安川、博世力士乐，ACSO，力士乐等各大品牌的DCS系统配件，机器人系统配件，大型伺服系统备件。

先介绍几点经验。
1、先通读一遍“系统手册”（不管能不能看懂，先了解个大概，以便学习编程时查找）；
2、由位控逻辑入手，逐渐增加定时、计数等条件，把或、与、非关系理顺；
3、进而练习整数运算、实数运算、类型转换；
4、量程转换、PID调节回路的建立及P、I、D参数的理解（最好是有个物理回路验证，比如变频器+电机+测速传感器）；
5、循环、顺序、跳转等程序控制（尽量避免跳转，非跳不可时也是跳的越近越好）；
6、中断、通讯、位置控制....

本人以ABB工业机器人配件DSQC系列和Motorola MVME系列，GE 卡件 模块 驱动器系列为主攻。各位电工朋友可根据自己的条件选择适合自己的PLC品牌，由于PLC的基本框架大同小异，学会一种至于其它的学习起来也就简单了。

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