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4．空气
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。
在移动由数学模型控制的通过机械互联的多个轴系时，一个基本的问题是，对于同步移动来讲，通常并不清楚哪一个轴是关键轴。所以当故障发生时，运动控制器一般不能判断其它哪些轴受到影响。通过定义运动组，PLCopen对此进行了处理，从而使得当其中一个轴组发生故障时，控制器能够产生一个适当的故障响应。成组的概念，使编程人员获得更大的自由度，集中精力处理机器所要求的特定任务，通过实施图中所示的组状态机器，由控制器来完成组功能。
（1）短路保护电机、电器和导线的绝缘损坏或发生故障时，可能造成短路事故。很大的短路电流产生过热和电动力可能引起电器设备损坏，甚至因此引起火灾，因此要求一旦发生短路故障时，控制电路应能迅速地切断电路。
PLC以可靠性高、抗干扰能力强而著称，但现代工业对可靠性要求越来越高，用户仍然希望下一代PLC的故障检测与处理能力将会更强。据统计，在PLC控制系统的故障中，CPU和I/O仅占20%，而输入输出设备、线路故障占80%。前者可通过PLC软件本身的软硬件实现检测、处理，而故障须加强研制、发展用于检测外部故障的专用智能模块，进一步提高系统的可靠性。
生产PLC产品的各厂家都在大力度地开发自己的新产品，以求占据市场的更大份额。因此产品向多样化方向发展，出现了欧、美、日多种流派。与此同时，为了推动技术标准化的进程。一些国际性组织，如国际电工委员会(IEC)不断为PLC的发展制定一些新的标准，如对各种类型的产品作一定的归纳或定义，或对PLC未来的发展制定一种方向或框架。
CUTLER HAMMER C10GN2 SER A1 120V-AC 200HP 270A AMP SIZE
(10/BOX) MUELLER 48C COPPER CLIP D519096
LOT 5 COMPRESSION PIPE COUPLING 6IN WIDE D336637LOT 5 COMPRESSION PIPE COUPLING 6IN WIDE D336637
MKS 41A-21683 Baratron Pressure Switch
AMAT 3300-03919 FTG Adapter FLG 1.33OD TO Male 1/4 VCR SST
NEW Berkeley process USA2-22-35, 950608, Multi axis servo amplifiers BAM
SPIRAX SARCO 57302 U V 1/2IN 3/4IN TRANS TUBING REPLACEMENT PART D365176
AJ71BR11
LENZE: E82EV751K4C E82EV751-4C 8200 VECTOR 0,75kW ! NEW !
WARRANTY Baldor Lab-Volt SYSTEMS CNC 5600-BO MILL MACHINE ConTROL BOARD MY93180
WARRANTY MOOG CNC VERTICAL MACHINE INTEL SERVO BOARD H71402 0711J 71400
TOPWORX 11-12518-A3 GO LEVERLESS LIMIT SWITCH 120V-
PULSA 3.9GPH 150PSIG DIAPHRAGM METERING PUMP 680C-S-AE
HT700 Bosch PC ZE400 038118-3047 038117-403401
ASCO 8345D11 RED HAT 110/120V-AC 1/4IN NPT SOLENOID VALVE D385078
在自动控制电路中有以下保护环节，也是一般自动控制电路共有的保护环节。
POWELL 2612 1-1/2 IN NPT 300 BRonZE THREADED GLOBE VALVE D515925
ELECTRonICS CORP 22DJ4-4000 ON/OFF ConTROLLER CARD
SPIE 7-92, STRAIGHT SHANK DRILL, 7" OAL, 0.750" SHANK DIA
DD121 Bosch B-IOK-DP32DI 1070079733-103
GATES A70 HI-POWER II 72 IN 1/2 IN V-BELT D500663
WILKERSON L01-02-000 EConOMIST 1/4 IN NPT IN-LINE LUBRICATOR D429354
ALLEN-BRADLEY 809-A03E TRIP CURRENT UNIT
LOT 5 13IU-2.5 2-1/2 IN STAINLESS SANITARY TRI-CLAMLOT 5 13IU-2.5 2-1/2 IN STAINLESS SANITARY TRI-CLAMP D395362
TELEMECANIQUE ABE-6SD25M (LOT OF 3) INTERFACE MODULES
Novellus 27-128501-00, Astec MP1-2Q-2U-2U-00, 100W, 73-690-0024
NEW AMAT 1400-01286 Sensor, RAW, TFE, RTD
Kinetics Fluid System Gas Line, Tescom 150, USG Meter
RIGHT AND LEFT PRODUCT ENTERING ARM SET D422446
AJ71BR11
SPRAYING SYSTEMS CP55196 STAINLESS SPRAY VALVE SEAT D415316
Portacel AVP2 Automatic Valve Positioner
Emerson 12-777831-00 52414 PCB Circuit Board
ALLEN BRADLEY 100-M05NZ*3 100-MO5NZ*3 ConTACTOR 24VDC COIL
GAST * PISTON AIR COMPRESSOR * 3LBA-10-M300X
HA96 Siemens Simoreg 6DM1001-7WA12-0 6DM1 001-7WA12-0 E:9
LOT 9 ASSORTED LETTER CHARACTER A M CODEDATER TYPE # 2 6 8 D358292
一：由于软PLC具有开放的体系结构，用户不必拘泥于厂家限制，可以根据需求，合理选择硬件和软件，从长远的目光来看，是十分节约成本的；并且由于软PLC遵循许多工业标准，能节约人员培训费用。
SIEMENS 73N-FR BUILT-IN VALVE POSITIonER REPLACEMENT PART D367431
VAN AIR KPFV1625ZE-CB FOR E101/102-625-C PNEUMATIC
GENERAL ELECTRIC RELAY ,ODULE CIRCUIT BOARD IC3606SPCC1H 006/10 104524
ON768 Reis RS4 AXC RS4-RES Rev 2.0 1540161 1740407
7/16IN HEX SHAFT 15-3/8X1-7/8IN ROLLER ConVEYOR D439146
PARTLOW RF7 250V-AC TEMPERATURE ConTROLLER D424802
GATES ASSORTED 800 5M 15 3VX300 POWERGRIP TIM
BANNER D11SN6FPQ SENSOR
ASCO 8262C37NV RED-HAT II 24V-DC 1/4 IN NPT SOLENOID VALVE D519380
AMAT 3800-00360 PRESSURE REGULATOR 20PSI FIXED M5 PORTS, SMC AR10-M5-1-X33US
New AMAT 0020-18480 Bracket, Source Conditioning
Swagelock 6LV-DAFR4-P-C Diaphragm Valves
SONY: FIREWIRE CAMERA CABLE
AJ71BR11
PSC 1266919 10-1/4IN OD 6-3/8IN ID STANILESS TOP PL
Sony MKS-8111SD.B 12 Input Board for SD MVS-8000
KOLLMORGEN TT-2043-1011-B SERVO MOTOR
TB WOODS 4B 6.0 TB 2517 TAPER BUSHED PULLEY 4GROOVE SHEAVE D463716
PARKER 10 BAR PNEUMATIC CYLINDER 100 CJMPU19MC 370.0
CV7 weltronic Stromversorgung S24V 215W 7A PG2SR Roland C3867 6130-12
HUBBELL BDE-98S ANDERSON BRonZE STRAIGHT LINE STRAIN CLAMP D523413
多数网友也是以上这个意见。但也有部分网友认为：应将互联设备共地；否则，如果接收端有较高共模输入，就有可能损坏接收端器件。
WOODHEAD 32320 BRAD HARRISON QUICK-CHANGE 3P MALE 6
THERMO ELECTRON E13918-100430 ConTROL BOARD PCB CIR
MAC 150PSI PNEUMATIC SOLENOID VALVE 343G114D1 103163
PP593 Frequenzmessumformer K System Pepperl Fuchs kfd2-ufc-ex1.d
EATON K7004 ROADRANGER SYNCHRonIZER KIT D508465
WABCO P-060692 REPAIR KIT PNEUMATIC VALVE REPLACEME
LOT 10 COOPER BUSSMANN MDL 1/100 BUSS FUSETRON 250V
FESTO 162941 DGPL-1-10-PP-VA-KF-B 10IN 1IN 120PSI LINEA
HOFFMAN A606CHAL 6X6X4 IN ALUMINUM WALL-MOUNT ELECTRICAL ENCLOSURE D424175
Edwards Active Gauge AIM-S-NW25 Turbo Molecular Pump Vacuum, D14541000
Varian L6281-301 Vacuum Isolation Valve, NW 16, 90 Degree, Novellus 27-199811-00
Novellus 27-402452-00 O'ring. 329401
REXNORD LF 25T 1-1/4IN ID 6-1/8IN OD PLASTIC IDLER WHEEL D502098
AJ71BR11
SMC ZSE2-0X-55CN-D 12-24V-DC VACUUM SWITCH D506307
WARRANTY CINCINNATI MILACRON MILL OPERATOR ConTROL PANEL C70051/C 9412-000665
Banner Engineering D12SP6FVY1Q Fiber Optic Sensor
AGASTAT 7022AC 7022 AC 120VAC 1.5-15s TIMING RELAY
THE LEARNING SHOP the MIMIC MACHINE OR PROCESS MODELER & MALFUNCTION GENERATOR
Y656 Siemens S5 SPS 6ES5454-4UA12 6ES5 454-4UA12 E:02
ATLAS COPCO 1614-9054-00 AIR/OIL SEPARATOR PNEUMATI
(2)PLC的CPU则采用顺序逻辑扫描用户程序的运行方式，即如果一个输出线圈或逻辑线圈被接通或断开，该线圈的所有触点(包括其常开或常闭触点)不会立即动作，必须等扫描到该触点时才会动作。
TEAC 13352032-00C RECORD MonITOR AMPLIFIER PCB CIRCUIT BOARD D465686
WAGO ELECTRonICC 750-600 BUS END TERMINAL MODULE QUANTITY!!
GRACO 10GPM, 120PSI, 3-1 RATIO SERIES A88A PUMP W/ AIR MOTOR 210-007
HT92 Indramat TCM 1.1-08-W0
FLAIRLINE SP-1978 16 IN 2 IN 250PSI PNEUMATIC CYLINDER D240055
WALWORTH ANGLE BODY NPT PVC THREADED 3/4 IN PISTON
ASSOCIATED RESEARCH MODEL 146 PHASE SEQUENCE INDICATOR
LOT 3 LEE SPRING LC 092H 07 M COMPRESSION SPRING 1-3/4 IN D461903
AEROVOX C77Z4815E 480V-AC 15KVAR CAPACITOR 3PH POWER FA
NEW AMAT 0140-77349 Cable, Chamber, K Tec Electronics
Cognex 805-0028-2 Insight Sensor System, In-Sight 1701, 800-5798-2, 329814
IPEC Speedfam Novellus 2850-739458, Robot 676
BOSCH RHO 3.0 1070075643-203 1070075643203
AJ71BR11
SIEMENS 3TB4617-0AA8 120V-AC 25HP 45A AMP SIZE 2 ConTACTOR D515834
Cooper Bussmann KCR-V 750 KCMIL CU Buss Cable Limiter for 600V or less
Titan FCI CV90DI Silent Check Valve Size 3 A-003349 ANSI CL 150/300
BALLUFF BNS 819-D03-R12-100-10-FD LIMIT SWITCH NEW!!
MOBILE POST OFFICE SOCIETY AMERICAN PHILATELIC SOCIETY VOL 40 JAN-DEC 1989
TU866 Ausgangsdrossel Drossel Ferritring SEW HD003
AMMERAAL BELTECH 40203 122-1/4 IN 40 IN ConVEYOR BE
3.并输出控制信号,根据逻辑运算的结果,输出状态寄存器向各输出点发出相应的控制信号.实现所要求的逻辑控制功能.
VICKERS EEA-PAM-581-D-32 AMPLIFIER CARD PCB CIRCUIT BOA
ELECTRO-FLYTE 12M02-00107-20 VOLTAGE ISOLATOR TESTED
FANUC ROBOTICS 30F 3-PHASE 2000RPM AC SERVO MOTOR A06B-0353-B831, PARTS/REPAIR
PV803 Einbaukarte Philips 8421 Analog Input 8212 680 74251
ASCO SC8256B046V 120V-AC 1/8 IN NPT SOLENOID VALVE
TVA 1081-812 1074-56 AN3143-130 REV B PCB CIRCUIT BOARD D466293
IMO 3-SCREW 2-1/2 IN 2 IN 1-1/8 IN IRON PUMP D500227
ALLEN BRADLEY 1336-MOD-E1 PROGRAMMING TERMINAL
WAUKESHA 14R-1 STAINLESS SANITARY FERRULE FIT
Diversified technologies 651200978 computer board, intel 386, looks unused
AMAT 0240-07143 SMIF Pod Interlock Retrofit, 0760-00006, 0250-05557
STEC LF-A30M-A-EVD, TEB .2g/Min, 3312600229
HIRSCHMANN ASGE2 / ASGE 2 / ENT 10512-R OYDE-S KYDE-S
AJ71BR11
PLANET PRODUCTS A70000242 ROTATING SHAFT 3/16 DIA
Maple Systems MAP450D-004 ASCII Terminal, Maple Systems MAP450D-004
Honeywell FF-SRD59852 Safety Door Monitor A1(+)/A2(-) 24V DC
HARTING HAN 18 EE-M-C MALE 18 PIN ConNECTOR NEW IN BAG!! QUANTITY!!
GEAR PULLER 38946
MH5 Bernstein Endschalter SN-SU1 IW 603.1152.107
PHD EAMF1 13/8 X25-P-D-A 101 25 IN 1-3/8 IN PNEUMAT
3.3独立开发的CAN总线互联CANSET软件：
THOMSON MICRON 32-313946-G158 5/8IN 15:1 PLANETARY GEAR
ELECTRO-METERS PSD-D-P-A NEW! 4-20mA DC PROGRAMMABLE DC ISOLATING TRANSMITTER
ALLEN BRADLEY ConTROL BOARD 8600-BP7C
TU240 Leukhardt Controller Deasy DKE16 DKE 16 150/00
OMRON E3S-BD81 PHOTOELECTRIC SWITCH 12-24V-DC SENSOR D505725
POLYCOM 2201-21220-001 VSX7000 VIDEO ConFERENCE CAMERA
LOT 5 THOMAS&BETTS PIPE REDUCING BUSHING 1-1/2 TO 1IN D363555
KOLLMORGEN M-105-A-34 5600RPM SERVO MOTOR 230V-AC 3.0A AMP 1.55NM 187HZ D278718
8AFV3BX4 13-1/2IN OD 2-1/8IN BORE STAINLESS PUMP IMPELL
NEW AMAT 0020-23275 PEDESTAL, TI, 8"
NEW AMAT 0190-20050 Cable assy, Nude Tube, 30 inch
Chemraz V-40 O-ring, Greene Tweed, GT M040003950SC513, 401178
SMC NVS4114-0009K 120V-AC SOLENOID VALVE D463960
AJ71BR11
RA JonES 482365 BLOCK HEAD PUSHER 2-1/25/8X1/2IN STRA JonES 482365 BLOCK HEAD PUSHER 2-1/25/8X1/2IN STAINLESS D261443
Parker Bayside Servo Hydraulic Pump Gearmotor PS180-050-062SD
NSK ESA-J2014TF1-20 SERVO DRIVE, NSK LTD. ESA SERVO MOTOR
HP 460102-001 ASSY 2U PCI MODULE TBD MOUNTING EXPENSION BRACKET
SAMSUNG * SAMSUNG TonER CARTRIDGE * SF-6800D6
PP281 Profibus Modul Siemens 6SE3290-0XX87-8?PB0
NORGREN NVFS3120-5DZ-03T 24V-DC 3/8X1/4IN NPT SOLEN
5.强化调试手段：无论是汇编程序，还是高级语言程序调试，都是令编辑人员头疼的事，而PLC的程序调试提供了完备的条件，使用编程器，利用PLC和编程器上的按键、显示和内部编辑、调试、监控等，并在软件支持下，诊断和调试操作都很简单。
SWS WARNING SYSTEMS 747-A PORTABLE BARRICADE AMBER FLAS
IBM THINKPAD TYPE 1836-QNU LAPTOP FOR PARTS! NO HDD, CD/DVD, OR BATTERY
DAIHEN AC SERVO MOTOR P60B13150HBPD3 WIRES CUT
HA224 Siemens S5 6ES5900-0AB12 6ES5 900-0AB12 E:A
FISHER 92C FS 92C-5 SELF POWERED STEAM REGULATOR 1I
NORGREN 11-002-037 125PSI 400PSI 3/8 IN NPT PNEUMATIC R