为了避免其它设备的电干扰，可编程控制器应尽可能远离高压电源线和高压设备，可编程控制器与高压设备和电源线之间应留出至少200mm的距离。
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6、断电延时的时间继电器的处理，
可编程序控制系统配置了彩色图形工作站/屏幕监视，但从价格及反映现场状态的时间来看，屏幕监视尚不方便。关键的故障，或者在关键的机械设备附近，可配置一些指示灯，它们可以用数字量输出做成，用来监视程序的正常运行，或用来调试程序，在指示灯旁配以功能标牌，可帮助操作人员确认可编程序控制系统的正常运行和及时反映故障。
另外要注意，一些高密度输入点的模块对同时接通的输入点数有限制，一般同时接通的输入点不得超过总输入点的60％；PLC每个输出点的驱动能力（A/点）也是有限的，有的PLC其每点输出电流的大小还随所加负载电压的不同而异；一般PLC的允许输出电流随环境温度的升高而有所降低等。在选型时要考虑这些问题。你可能很了解ARC顾问集团的市场研究报告，它量化并预测自动化系统、软件、仪器仪表、自动化服务等多个市场。但ARC的研究并非都是定量的市场占有率/市场预测报告。ARC近发布了3.0版的协同过程自动化系统（CPAS）研究报告，其中描述了ARC所期望的过程自动化系统的功能，更重要的是介绍了CPAS将如何帮助实际运营者实现卓越运营（OpX）。
电源正常，运行指示灯不亮，说明系统已因某种异常而终止了正常运行。检查流程如图3所示.
另外要注意，一些高密度输入点的模块对同时接通的输入点数有限制，一般同时接通的输入点不得超过总输入点的60％；PLC每个输出点的驱动能力（A/点）也是有限的，有的PLC其每点输出电流的大小还随所加负载电压的不同而异；一般PLC的允许输出电流随环境温度的升高而有所降低等。在选型时要考虑这些问题。你可能很了解ARC顾问集团的市场研究报告，它量化并预测自动化系统、软件、仪器仪表、自动化服务等多个市场。但ARC的研究并非都是定量的市场占有率/市场预测报告。ARC近发布了3.0版的协同过程自动化系统（CPAS）研究报告，其中描述了ARC所期望的过程自动化系统的功能，更重要的是介绍了CPAS将如何帮助实际运营者实现卓越运营（OpX）。
（1）I／O窜电，PLC自动侦测到I／O错误，进入STOP模式。
CUTLER HAMMER HMCP003A0C 3P 3A AMP 600V-AC MOLDED CASE CIRCUIT BREAKER D420411
DATALOGIC DS4600A-3200 LASER BARCODE SCANNER 10-30V-DC
NUMATICS 031SA4004000061 1/8IN NPT 24V-DC SOLENOINUMATICS 031SA4004000061 1/8IN NPT 24V-DC SOLENOID VALVE D508741
OKi DX-250 Precision Dispensing System
MKS BARATRON Type 122B Pressure Transducer 15VDC - 30 mA 122B-11441 401125
PRO-LOG PWB111469-003 TTL I/O Card
OMRON SERVOPACK SJDE-02APA-OY SJDE-02APA-0Y ( SJDE02APAOY ) ! NEW IN BOX !
MX-42VM11
ROSEMOUNT 1151GP4E22S1L4D6 45V-DC 150IN-H2O PRESSUR
Watts 1/2" LFBP30 75-175 Diaphragm Operated Bypass Control Relief Valve
Estic TNA1-CU20C AC Servo Nutrunner Control Unit
BLACK BOX TRISTATE PLUS TS165A DB25 LINE TESTER
LINEAR GUIDE RAIL - 48-3/4" LONG UG7D40
ON723 Thyristor Semikron Semipack SKKT105/12E
MARKEM 33088BA PEEL ROLLER ARM ALUMINUM D265008
5）对变频器干扰的抑制
YOKOGAWA E7000JK-03 E7000JL-03 MX CHANNEL 2 PCB CIR
RED LION ConTROL PULSE RATE TO ANALOG ConVERTER PRA11031 115VAC
FANUC CABLE 20.5M RM2 8009-T995
ON888 Saia burgess Panel PCD7.D232 HW F12 FW V040
AIRSAN KK1-1625 16X25X1 IN PERMANENT PNEUMATIC FILTER ELEMENT D389187
WABCO PD20042-1998L12 AMERICAN-STANDARD PILOTAIR 1/4IN NPT AIR VALVE D317673
FISHER ES 3 IN 657 3582I STEEL PNEUMATIC BUTTWELD 600 C
BAILEY AIN220 ANALOG INPUT BLOCK MODULE 24V-DC D523221
PARKER CPL57-120 COMPUMOTOR PLUS SERVO CONTROLLER
NEW AMAT 0100-90163 PWB ASSY, WAFER ARM POS, S412
Macromatic Solid State Time Delay Relay SS-60528, 24 VAC/DC, 10 Amp DPDT, 399025
Stec PV-2000 PIEZO VALVE PV-2103MC
SIEMENS H012108P ELECTRIC PNEUMATIC ConTROL PANEL D
MX-42VM11
LINMOT: E2030-DP 0150-1626 + ME01-01/08 0150-1631
WARRANTY Allen Bradley Servo Controller IMC-120 1771-HSN/B 1771-HM CARD 900297
Telemecanique Groupe Schneider Electric ABL8 REM24050 PS1 Power Supply
AB 700-CF400 600V 25A GENERAL RELAY 120VAC * QUANTITY
ALLEN BRADLEY ControlNet COMMUNICATION INTERFACE 1770-KFCD15 SER. A *NIB*
Y50 Pilz PZE X4V 24V DC 774581
ALLENAIR EV 2 X 3 BC SDS AAC 120/60 120V-AC 3 IN 2
对于输入模块，电源LED显示表明输入设备处于受激励状态，模块中有一信号存在。该指示器单独使用不能表明模块的故障。逻辑LED显示表明输入信号已被输入电路的逻辑部分识别。如果逻辑和电源指示器不能同时显示，则表明模块不能正确地将输入信号传递给处理器。输出模块的逻辑指示器显示时，表明模块的逻辑电路已识别出从处理器来的命令并接通。除了逻辑指示器外，一些输出模块还有一只保险丝熔断指示器或电源指示器，或二者兼有。保险丝熔断指示器只表明输出电路中的保护性保险丝的状态；输出电源指示器显示时，表明电源已加在负载上。像输入模块的电源指示器和逻辑指示器一样，如果不能同时显示，表明输出模块就有故障了。
STOCK EQUIPMENT 4-C15444 OPERATOR INTERFACE PANEL D473804
ADVANCED MICRO ConTROLS INC 1731 H ENCODER
CHICAGO POSTAL HISTORY HARVEY M. KARLEN
PP520 Frequenzumrichter Telemecanique Altivar ATV66U90N4 7,5KW
MARSH H4212 0-30PSI 4-1/2 IN 1/4 IN NPT PRESSURE GAUGE D496387
Probes (2)
FOXBORO P0500WX I/A SERIES GC3-CRT V10 RB GS ConNECTOR
LARCO AZR31T2 SAFETY RELAY
FUJI 6KC1123003X1A1 DRIVE
Brooks 5850E, BCL3, 200 SCCM, 5850EC3BG4QB2D, 0190-00074, MFC, VCO Connection
Kinetics Gas Line, APTech AP1010SM 2PW FV4 FV4 SB, Swagelok 6LV-DAVR4-P
PFEIFFER VACCUM TMH 071 P DN 63 ISO-K, 3P, TC750-E74, PM C01 712, OEM BOX
SHEFFER 2-1/2ARF2.CCK 2IN STROKE 2-1/2IN BORE PNEUMATIC CYLINDER D375725
MX-42VM11
PNEUMATIC SCALE 103773 BRASS GUIDE PIN 1/4X1-5/8IN
Mitsubishi HA80C-SS AC Servo Motor Mazak
Carlisle RCP71 Super Vee-band Belt
OMRON E2E-X1B1 12-24VDC 2M PROXIMITY SWITCH - NEW! QUANTITY
ALLEN BRADLEY INVIEW DH+ MODULE SER.A REV.B 2706-PDHPP
W996 Phoenix Contact MCR-C-I/I-44-DC 2781806 Trennerst?rker
DODGE 3030B 120015 4-1/4IN ID 5-1/8IN OD TAPER BUSH
1）每次扫描用户程序之前，都先执行故障自诊断程序。自诊断内容为I/O部分、存储器、CPU等，发现异常停机显示出错。若自诊断正常，继续向下扫描。
TELEMECANIQUE XS1M18MB230L1 PROXIMITY SWITCH SENSOR 24-
ALLEN-BRADLEY 700-R310A1 TYPE-R AC RELAY 115-120V 60HZ / 110V 50HZ NEW!!
SEW EURODRIVE MOVIMOT FIELD DISTRIBUTOR MFD 32A/MM15C/Z38G0/BW/AFG
HT883 Kommunikationsmodul Siemens Moby ASM 475 6GT2002-0GA10 E5
ConBRACO 40-214-T2 BACKFLOW PREVENTER BRonZE 150 3/4 IN CHECK VALVE D306267
S2A-173-0703 0-L17-383 PCB CIRCUIT BOARD MODULE D523860
LOT 4 GENERAL ELECTRIC C12.5B OVERLOAD HEATER ELEME
ABB TB557J2EB1F10 BAILEY METER 100/40PSI 80/140C ORP INSERTION PH SENSOR B486426
LAMBDA LXS-G-24-OV-R-M 105-132V-AC 24V-DC 40/35/30/25A AMP POWER SUPPLY D523284
AMAT 0200-05638 Blade Ceramic Open 300mm, 330341
MECS UTM3500NS Wafer Handling Robot and cables
Applied Ceramics 9701-5635-01-A Assy, End Effector, Assive, 450, 330046
TR ELECTRONIC: LE-200 CAN-DN 2200-00402 ( 2200-00402-0825 ) ! NEW IN BOX !
MX-42VM11
SMC VQZ332-3MB-N11-F 1/4X1/8IN NPT 115V-AC SOLENOID VALVE D502021
Stanley A40LATA-10F2 3/8" Right Angle Nutrunner
Balluff BNS-B03-D12-72-10-FD-L3 Limit Position Sensor
ALLEN-BRADLEY 1771HT3 1771 HT3 ESTOP IO TERMINATION PANEL QUANTITY!!!
ABB ROBOTICS DRIVE UNIT 3HAB8101-11/08W 101395
ON524 Robonum Dupslaff Num Bedienteil Panel 221
GOODYEAR 3VX475 HY-T WEDGE MATCHMAKER 47.5 IN 3/8 I
输人输出是PLC与外部设备进行信息交流的通道，其是否正常工作，除了和输入输出单元有关外，还与联接配线、接线端子、保险丝等元件状态有关。
SORENSEN PTM15-3.5 105-125V-AC 14.2-15.8V-DC 3.5A AMP POWER SUPPLY D512300
THERMO 494-3371-C-32-D-120 THERMOCOUPLE 32 IN PROBE SENSOR D438007
FAFNIR TIMKEN PRECISION BEARING 2MM9119WI DUL NIB
PV132 Schiele SPS-600 2.408.180.00 E, Digital Eingang 32-fach, 24V
ATRA-FLEX M3 MILLENNIUM 1-1/8 IN BORE COUPLING HUB
WESTRonICS CB100281-01 PCB CIRCUIT BOARD REV C D465588
AK-2DAC REV 3 PCB CIRCUIT BOARD D518292
SIEMENS 3RV1421-1DA10 MOTOR STARTER
FOXBORO 8000-PA15 4-20MA 120V-AC MAGNETIC FLOW TRANSMIT
varian F2687001 plate mounting cooled
KURODA M600DF-04 AIR FILTER REGULATOR ASSEMBLY S105-4 855-2G 402376
AMAT 0200-40032, Cover Plate SI 150MM SF
PSC 102561 STEEL BELT GUIDE D346546
MX-42VM11
PNEUMOTIVE GH-505-PS 160658 AIR COMPRESSOR D524148
Jamesbury 815L113600XZ 3" Wafer-Sphere Valve Mod. C 316SS
Compumotor Corporation M57-40-S-R13 Stepper Motor Drive
GE FANUC IC693CBL300A I/O EXPANSION CABLE QUANTITY
VIC LEAK DETECTION 918-598 PLC AC INTERFACE W/SNIFF ConTROL MD-490S *NIB*
DD961 Alcatel Fast Ethernet Omni Switch ESX-K100C32W4 Neu
LEEDS NORTHRUP A1A1AXA2X RECORDER PREAMP PCB CIRCUIT BOARD D465840
１、顺序控制
NUMATICS 237-214B SOLENOID COIL PNEUMATIC VALVE BODY MA
TSUBAKI RF2100 2-1/2 IN 10FT SINGLE STRAND RIVETED
SQUARE D 2 POLE 100AMP TYPE QOB CIRCUIT BREAKER LOT OF 5
DD308 Gildemeister 0.651.201-48.0 ADP
ATLAS COPCO 2901-0635-00 VALVE COMPLETE D414405
SQUARE D M5DSFS030 480V DISConNECT SWITCH 30A FUSIBLE F
LOT 5 SQUARE D 8501 NR45 RELAY base MODULE D475930
ABB GK-128892-001 CHECK SAMPLE KIT D498667
LOT 15 APN35694G 3-PIN POWER TRANSISTOR D480715
NEW AMAT 0020-02126 Bellows seat, Bottom, REV.5.2 HEAD, ECP
TeNTA Technology AS00801-04 Octal Serial cPCI SCOM MKS-CIT, AMAT 0190-09290
Digital Power US250-460 PCB Power Supply, 203-0189-001, 6200-2006-01, 330357
Grossenbacher FMS-5 5050020 ( 50 50 020 50-50-020 )
MX-42VM11
SOUTHCO 37-10-051-10 LATCH D419633SOUTHCO 37-10-051-10 LATCH D419633
Sick Optic Electric WSU 26/2-220 Photoelectric Sender
Belden EFI715QRG Connector Assembly w Male Pin W Series
TELEDYNE 1860-0700-01 1860-0701-01 REV B PCB CIRCUIT BOARD D507904
UNIVERSAL STARTER 12 V 70 AMP SAE J1171 & ISO 8846
M894 GE DS200SLCCG1AED DS200SDCCG1AGD DS215SLCCG1AZZ0?1B
ANDERSON GREENWOOD H7HIC2 02-4076-008 1/4 IN THREADED NEEDLE VALVE D430661
2.出错指示（［EPROR］LED闪烁）
NORGREN D1036J-C1 1 1-1/4 IN NPT PNEUMATIC VALVE BODY MANIFOLD D438941
SFIM SF72-500A/5A AC 500/5A DIN 72 ANALOG PANEL METER NEW QUANTITY!!
GUARDAIR 24" CLASSIC SAFETY AIR GUN 75LJ024AA
ON868 Modulpac Regelkarte Siemens 6DM1001-7WB01-0 6DM1 001-7WB01-0 E3
FENWAL 58201-10 100-400F 115/230V-AC TEMPERATURE ConTROLLER D362964
ROSEMOUNT 3051L2AA0AD11AAC604 0-84IN-H2O TRANSMITTER D498093
LOT 4 HELWIG 13-751692 WH-407 CARBON MOTOR BRUSH D342554
FOXBORO B0132UH PCB CIRCUIT BOARD D510372
KEYENCE CV-C11 CAMERA CCD VIDEO BLACK/WHITE
Unknown NPO3746 0632 Capacitor 50pF 15kV type61
Macromatic Time Ranger, Time Delay Relay SS-61928 Off-Delay, Programmable 400491
AMAT 0240-91510 KITS, PIKS, IMPLANT C/FORM ASSY 0140-90222 0140-90223 401317
BELIMO NR24A-SR NR24ASR ! NEW !
MX-42VM11
B&R: SYSTEM 2003 CP476 7CP476.60-1 REV. J0 or REV. I5
Yaskawa Electric VS-606V7 Drive CIMR-V7AT20P2 20P20
New Japan Radio Co. NJR2835H Ku-Band PLL LNB
B&R 7DM465.7 QUANTITY! DIGITAL I/O MODULE
FOXBORO MAGNETIC FLOW TUBE 8003A-WCR-PJGFGZ
PP527 Control Techniques RD20 3130-0690 RD1 3130-0670 BSM15GP120
MARATHON G581 EVD 56T17F5321J P 1/2HP 208-230V-AC 1725R
详细分析被控对象的工艺过程及工作特点，了解被控对象机、电、液之间的配合，提出被控对象对PLC控制系统的控制要求，确定控制方案，拟定设计任务书。
REGAL 5-1/2 NC HSS GRD RETHREADING 1-5/8 IN DIE D519843
SUDMO 2901022 DS X620-AS 1IN SEAL KIT REPLACEMENT P
PARKER 9/16" JIC X 9/16" ORB 90 DEGREE ELBOW, LOT OF 6
ON200 Telemecanique Schneider Automation TSX 17-10/20 TSX DMF 401
FISHER BROEN 19160.350.007 VALVE CARTRIDGE 1/2IN CE
TOSHIBA BY754FLF2UD 7.50HP 230/460V-AC 1740RPM 213T 3PH