3500/50M

PLC控制系统主要由输入部分、CPU、采样部分、输出控制和通讯部分组成，如图1所示。输入部分包括控制面板和输入模板；采样部分包括采样控制模板、AD转换模板和传感器；CPU作为系统的核心，完成接收数据，处理数据，输出控制信号；输出部分有的系统用到DA模板，将输出信号转换为模拟量信号，经过功放驱动执行器；大多数系统直接将输出信号给输出模板，由输出模板驱动执行器工作；通讯部分由通讯模板和上位机组成。

因为PLC本身的故障可能性极小，系统的故障主要来自外围的元部件，所以它的故障可分为如下几种：

（1）输入故障，即操作人员的操作失误；

■传感器故障；

■执行器故障；

■PLC软件故障

这些故障，都可以用合适的故障诊断方法进行分析和用软件进行实时监测，对故障进行预报和处理。

***********************************

NUMATICS REGULATOR VALVE 554RD100J000000

FHAC GX11 HYDRAULIC MOTOR/PUMP 9G D23 01

PALL MODEL 8670 DUPLEX FILTER ASSEMBLY HH8670D20 UB T 104656

NUMATICS 150PSIG, 120V, .16A, 50/60Hz SOLENOID VALVE 554BB500K

ADVANCE * CYLINDER REPAIR KIT NIB * I325-00NL

NORGREN 250PSI PNEUMATIC LUBRICATOR L17-800-OEDA

MAGNETROL PD43L38Y 60W 120V SOLENOID VALVE

HYTORK 1125 ACTUATOR W/ ACCUTRAK POSITIONER 1040N 103548

PARKER 1000KPA SOLENOID VALVE F72VXBG019A

MILLER HEAVY DUTY AIR CYLINDER AV-72BXN -08.00-40.00-01?38-N11-0

MAC 24VDC 6.0W 150PSI SOLENOID VALVE 130B-501BA

NUMATICS 150PSIG .31A 115V PNEUMATIC SOLENOID VALVE 33SAD441A 103353

SMC PNEUMATIC MICRO MIST SEPERATOR REGULATOR AWD20-01B

FESTO 50MM BORE 200MM STROKE PNEUMATIC CYLINDER, DNU-50-200-PPV-?A

LUBRIQUIP TRABON .150 TWIN OUTLET DIVIDER VALVE, MXP-150T

NUMATICS 24 VDC, 4.0 WATTS SOLENOID COIL, 236-312B

BEHRINGER CORPORATION BE60P40AH HYDRAULIC FILTER, NIB

FESTO 40MM BORE 170MM STROKE PNEUMATIC CYLINDER, ADVU-40-170-PA, NNB

PARKER 10671-32-32 FEMALE JIC 37 SWIVEL

BIMBA PNEUMATIC CYLINDER 042-DZ YG

VERSA 120V 75PSI SOLENOID VALVE ESM 8012 66 Z CLL36

FESTO DGPL-63-500-PPV?-A-GF-B

NUMATICS 123BA400K 120 VOLTS 50/60 HERTZ 150 PSIG SINGLE SOLENOID VALVE, NNB

ENERPAC AIR HYDRAULIC BOOSTER AHB46

NUMATICS 150 PSIG-MAX SOLENOID VALVE ISO5599/11

SMC NCDBN32-XA-0065?US AIR CYLINDER, NNB

NUMATICS F30B-04CE PNEUMATIC VALVE, NIB

FESTO PNEUMATIC LINE GUIDE FEN-50-80-KF NNB

HYDAC FILTER ELEMENCT 0030D025W/HC NIB

NUMATICS * FLEXIBLOK FILTER * C32D-03JMS01

YUKEN HYDRAULIC CYLINDERS CJT70 FA40B50B-ABA

FESTO PRESSURE REGULATING VALVE ILR-03-ZP-P7.0

YUKEN KOGYO CO. HYDRAULIC CYLINDER CJT 70 -FA100C 28N-BNB 11A

SMC 145PSI 1.0MPa PNEUMATIC CYLINDER CDNAFN80N-480-D

NUMATICS 120V, .15A, 50/60Hz, 150PSIG-AIR, SOLENOID VALVE 554BA400K014X30

NUMATICS 152SS400K000030 120 VOLTS 50/60 HERTZ 150 PSIG-AIR SOLENOID VALVE, NNB

PARKER 150PSI PNEUMATIC SOLENOID VALVE E24831000 103528

ROSS CONTROLS 24VDC SOLENOID VALVE, D2771A4964 NIB

NUMATICS 150 PSIG, 120V PNEUMATIC VALVE 134SA400K

NUMATICS 120V, 50/60HZ, 0.24A SOLENOID VALVE 135SS53BK

DURR PNEUMATIC HAND CONTROLLER 110006

YUKEN HYDRAULIC CYLINDER CJT70-FA32B25N-?AND-E

INGERSOLL-RAND 150LBS @ 100PSI LIFTING AND BALANCING UNIT BW01508C

PARKER L72431211XXVX0B 250 SERIES 250 PSI MAX PNEUMATIC SOLENOID VALVE, NNB

NUMATICS SOLENOID VALVE 11DSA600C * MANUFACTURER REFURBISHED*

FESTO PNEUMATIC CYLINDER DNG-50-200-PPV-?A NIB

TOLOMATIC PNEUMATIC RELEASE 0760-0016

SMC PNEUMATIC CYLINDER CDNABN80N-150-D?-J59WL

SMC COMPACT GUIDE CYLINDER MGPM63-250-Z73L