PLC控制系统故障率情况是怎样的？
1）CPU与存储器故障率占5%。
2）I/O模块故障率占15%。
3）传感器及开关故障率占45%。
4）执行器故障率占30%。
5）接线等其他方面故障率占5%。
02
PLC的故障多发点有哪些？
1）继电器、接触器。
2）阀门、闸板。
3）开关、极限位置、安全保护、现场操作的一些元件或设备。
4）PLC系统中的子设备。
5）传感器、仪表。
6）电源、地线、信号线的噪声。
维修PLC先后顺序是怎样的？
先动口再动手
1）维修PLC时，不要立即直接动手，而是先询问故障发生前后的情况、故障现象。
2）如果对生疏的PLC维修，应先了解其工作原理。
先清洁再维修
维修PLC时，可以打开机子，首先进行清洁PLC。
先外后内
维修PLC时，先检查外部现象与原因，如果外部正常，则然后检查PLC内部。
先无电判断后通电判断
首先在没有通电的情况下，先判断熔丝是否损坏、是否不通电就可以判断出故障点。如果不能够判断出来，则再通电检查PLC。
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CyberOptics Laser Section Microscope LSM-C
CyberOptics Semiconductor EX-43-PM Laser
Wafer Scanner
Daifuku Model BC-D01H1-4 Optical Data
Transmitter (CTV)
Daifuku Model BC-D01H1-6 Optical Data
Transmitter (CTV)
Danaher Motion MEI Motion Control 1007-0052
Rev. 5 T006-0002
Danaher Motion PCB P/N: 1007-0105 REV 2.
SynQnet Interface Device Lot of 2
DANAHER Motion S200 Series Synqnet
S20360-SRS Servo Drive
Dataforth 4 Channel SCM7BP04 Back Pain with
Dataforth SCM7B47 Modules x 3
Dataforth DSCA38-05 DSCA Isolated Strain
Gage Input Conditioning Module
Dataforth DSCA41-02 DSCA Isolated
V.Wideband Input Conditioning Module
Dataforth SCM7B34 Isolated Linearized TC
Input Module with Board *Lot of 3*
Dataforth SCM7B47 Isolated Linearized TC
Input Module x 2 *Lot of 5*
DATAFORTH SCM7B47T-1691 Input Modules LOT
OF 3
Dataforth SCM7B47T-1691 Isolated Linearized
Type T Thermocouple Input LOT OF 4
Datalogic DS2200 Barcode Scanner
DS2200-1100 SB2010
Datalogic S5-5-A2-70 Photoelectric Sensor
Switch
DATAMETRICS Barocel Pressure Sensor
590D-1000W-2Q8-V1X-4D 1000”H20
Datamyte 762-28-EN Data Acquisition
Terminal Allen-Bradley Lot of 2
Datel DC/DC Converter BWR-15/500-D5 LOT OF
4
David Clark Aviation Pilot Headphones P/N:
12507G-23 Model H3051
DAYTON 1EGN1 Solide State Relays 90-280 VAC
Lot of 2
Dayton AC Inverter 3KV66 HP: ?
Delta DF-150 Delta F Oxygen Analyzer
153-500
Delta Electronics DPS-350MB-1 A Power
Supply
Delta Electronics M39012/24-0002
Connectors Lot of 18
Delta Process Controller Model DTC1000R
DC24V
Delta Tau 2/4 Axis Interface ACC28E
603404-105 & 603406-100
Delta Tau 4-Axis ACC-24E2A Umac Turbo
Interface Board Daughter Board 603961-101
Delta Tau 602805-105 & 602804-109 Macro
4 Axis Board IN BOX
Delta Tau 602811-101 Mini-Macro I/O 144 Bit
PCBA Board
Delta Tau 603269-105 Power Supply ACC-E1,
UMAC AC
Delta Tau 603398-103 4 Axis UMAC Turbo
Interface
Delta Tau 603398-104 UMAC Turbo 4-Axis
Interface
Delta Tau 603398-106 UMAC Turbo 4-Axis
Interface
Delta Tau 603398-108 4 Axis Interface
Delta Tau ACC-11E 24 IN/24 OPTO Interface
603307-103
Delta Tau ACC-11E, 24 IN/24 Out Opto
Interface 603307-104
Delta Tau ACC28E, 2/4 Axis A-D Interface
603404-103
Delta Tau ACC36E 8/16 channel 603483-106
& 603276-100
Delta Tau ACC36E, 8/16 CHAN, 12-BIT ADC
603483-102
Delta Tau ACC36E, 8/16 CHAN, 12-BIT ADC
603483-104
Delta Tau ACC36E, 8/16 CHAN, 12-BIT ADC
603483-105
Delta Tau ACC-E1, UMAC AC Power Supply Assy
603269-103
Delta Tau ACC-E1, UMAC AC Power Supply Assy
603269-104
Delta Tau ACC-E1, UMAC AC Power Supply Assy
603269-106
Delta Tau Assy: 603398-10A UMAC Turbo
4-Axis
Delta Tau MAC Turbo 2-axis Analog
603398-106
Delta Tau Macro 2-axis 602805-105 Macro CPU
PCBA
Delta Tau Macro Pack 24 IN/ 24 OUT Opto
High Power Assy 603277-100
Delta Tau Micro A/D PMAC ACC28A 602236-502
W/Phoenix Contact UMK-SE
Delta Tau Opto Interface 603307-101 Board
Delta Tau OPTO Interface 603307-102 Board
Delta Tau PMAC-2 ACC8E Assy. 602469-102
Board
Delta Tau PMAC-PC 602191-103 PMAC
602240-101 Opt 2 & Universal CPU 602705-103
Delta Tau PMAC-PC 602191-103 PMAC
602240-101 Opt 2 & Universal CPU 602705-106
Delta Tau PMAC–PC DSP 602191-104 &
Universal CPU 602705-107 & 602240-101
Delta Tau Systems Macro CPU PCBA 602804-109
Board
Delta Tau UBUS 12 Slot Backplane 603465-101
Delta Tau UBUS 12 Slot Backplane 603465-102
Delta Tau UMAC Turbo 2-Axis 603398-108
Delta Tau UMAC Turbo 2-Axis 603398-109
& 603276-100
Delta Tau UMAC Turbo 2-Axis Analog
603404-104
Delta Tau UMAC Turbo 4-Axis 603398-107
603276-100
Desco 98227 Workstation Monitor
Desco Multi-mount Continuous Monitor Model
19228 24 VAC
Detas GSASWD02-24 100-240VAC Power Supply
DGH D1412 Data Acquisition Module RDT
a=.00385 RS-485 Lot of 3
DGH D3162 Voltage Output 0-1V RS-485 Lot of
5
Diaphragm Vacuum Pump 949-9452 Vacuubrand
Dicon Fiberoptics Model
MT-C-T-15-FC/APC-2-20-F-1-Z 1550nm Lot of 2
DICON Fiberoptics SNC-50-15-2-1-FC-9L-0.5
Digicon 6 720019 DS6BNCU Cable
Connectors Lot of 50
Digital H3350 70-22831-01 transceiver
Digital View SV-7010-1141-A4 REV D
586840350 Screen Monitor UN
Digitec Digital Strain Gage 4050A-07 LED
Readout Display
Direct Logic 305 KOYO D3-05-1 110/220V
Controller W/ Modules
D-Link DCS-2000 Audio Internet Camera
DMT Division of JAY-EL Products
M4-426J30ILLT 12-15 VDC
Dodge 117073 1008x5/8 Taperlock Bearing NIB
Dolan-Jenner A3739P Fiber Optic Annular
Ring Light 36”
Dolan-Jenner Industries Fiber-Lite High
Intensity Illuminator Series 180
Doric Minitrend 205 Data Logger Printer
Drager P3U Remote Sensor 8317275
Dranetz 626PA6005 AC Current Monitor
626-PA-6005A
DRC Dynamics Research Corp P/N: E19002300
Rev. 1 Encoder
DRC Dynamics Research Corp.
35-11-B1F-8192-S912 Rotary Encoder
DRC Encoder Model D112613001 Rev. 5
C25F085E1G-2500-S930
DuPont Kalrez High Chemical Resistance
Centering Ring NW40/QF40/KF40 Lot of 15