Description
Excitation system DSQC522
Excitation system DSQC522
Module Clips Drive controller servo motor
Contact: Mr. Lai
Wechat:17750010683
Whats app：+86 17750010683
Skype：+86 17750010683
QQ: 3221366881
3221366881@qq.com
Research on common faults and countermeasures of DCS system
DCS system is a distributed control system. It is a modern high-tech technology combining computer, display, communication, continuous monitoring, alarm and programmable control. It has comprehensive functions, convenient operation, flexible configuration, and stable and reliable. The practice has proved that the application of DCS system to large and medium-sized production enterprises not only contributes to daily production maintenance and reliable and stable operation, but also saves costs for enterprises, thus reducing costs and improving core competitiveness of enterprises.
1 Common faults of DCS system
1.1 Communication failure
DCS system network topology and communication protocols are various, but most of the DCS systems of different brands in the market are divided into two levels in the network organization structure: one is to the central processor and its expansion sub-station (lower computer), the other is the human-computer interface, such as operators, servers, various stations of operator stations (upper computer). Communication failures usually take the following forms: system crash, network disconnection, communication interruption, etc. There are three common reasons for communication failure: first, the operation of the DCS system communication function is mostly completed by asking data from one node to another node. If the other node does not have the data, it will ask again and again until it reads the data. If there is no such data on the network, the network will be blocked and the communication will not be able to proceed normally. Secondly, DCS configuration is deficient, and its application software has been increasing with the development of science and technology, but it is not actually connected with I/O points. Therefore, even if the CPU reads data, it is very effective, which brings considerable load to the CPU and easily causes network congestion. Finally, network communication media problems, hardware upgrade drivers can not keep up, and the operating environment temperature is too high, and other factors may hinder communication.
1.2 Hardware failure
The hardware failure is generally manifested in the process control layer, mainly because the modules in the whole system, especially I/O, are damaged. Hardware failure can be very obvious, so it is easy to detect. The impact of it is usually only local. The unchanged parameter display is the manifestation of hardware damage. Hardware damage is mostly caused by the aging of the original due to improper use or too long use. If the surrounding environment of DCS is dusty and high temperature, it will seriously shorten its service life. In view of this, it is best to ensure that the civil engineering and decoration works have been completed before installing the DCS control system. If it is in summer, it is also necessary to pay attention to timely start the air conditioning, or focus on the protection level of complex environment when selecting the DCS system products. At present, many brands of DCS products in the market have developed the self-diagnosis function of hardware, which can directly reflect the location of the faulty hardware on the upper computer, and can also specify which channel has failed, which also brings a lot of convenience to eliminate the hardware failure.
In addition to the channel fault, there are also human-machine interface faults in the hardware fault. The specific manifestations of human-machine interface faults are: the mouse can not operate normally, because of the failure, so it is very inconvenient for operators to use. The reason for this situation may be that the USB interface is unstable, or there may be a problem with the computer motherboard. The crash may be due to defects in the DCS system software itself, or it may be caused by too much CPU load. When this happens, be patient to analyze the cause. The operation of the function keyboard fails. Sometimes the key contact is poor. At this time, the keyboard operation is abnormal.
1.3 Software fault
Software failures are usually caused by the defects of the DCS system itself, and most of them occur at the early stage of the DCS software upgrade stage. The software is the most complex part of the DCS system. The program is complex, and the configuration workers are mostly cross-working. In this way, once the communication is not in place, there will be loopholes, and software errors are inevitable. The modification of DCS system software shall be carried out in strict accordance with the regulations, and the modification shall be backed up. In case of data loss, the backup can be used for repair. There are three main types of software failures: the configuration information of the master CPU and the slave CPU is inconsistent, which makes the CPU unable to complete initialization; The network communication pressure is too large, resulting in system chaos; After a component is updated, the relevant parameters do not change accordingly.
1.4 Power failure Excitation system DSQC522
Power failure will directly lead to the failure of DCS system control functions, stop operation and cause economic losses. The control power supply is literally the “lifeline” of DCS system. If some particularly important power supply fails, it will directly affect the orderly and stable operation of the protection logic and other control logic, and even lead to the misoperation of some interlocking driving elements, causing serious production accidents. Common faults of the power supply include: (1) the connector is not firmly crimped or connected stably, resulting in poor contact; (2) The CPU has a problem or the insurance configuration is unreasonable, so that the power supply is cut off; (3) The power line wiring is not scientific and is too close to the facilities with strong magnetic interference; (4) Various reasons lead to module damage.
2 Preventive measures
2.1 Anti-signal interference
Even slight signal interference may cause communication failure, affect the system operation, cause system paralysis, or signal interference directly interferes with the signal entering the DCS, resulting in misoperation and so on, which will cause huge losses. How to better resist signal interference can prevent the following measures: First, before painting the walls around the central control room, it is necessary to install a layer of dense steel wire mesh, Then connect with PE grounding system, so as to effectively avoid the huge interference of strong electromagnetic field. Second, the power equipment should not be grounded in series, and the power equipment should be kept as far away from the grounding wire as possible. Thirdly, the dual-circuit redundant power supply system is used to supply power to the DCS, and the UPS is always supplied without interval, so as to improve the overall anti-interference level of power supply and circuit. Fourth, all analog signals entering the DCS system must be connected with shielded cables. The shielding layer must be specially grounded and its resistance to ground must be less than 1 Ω. Fifth, shield the radio around the DCS system as much as possible.
2.2 UPS power supply maintenance
Regularly measure the actual temperature of the key terminals with the help of infrared thermometer, and record it in detail at the same time. Pay special attention if there is temperature rise; Measure the power supply voltage with the help of a multimeter and record the data. Pay special attention if there is any fluctuation; At the maintenance or shutdown stage of the DCS system, the switch test shall be carried out in time to monitor whether the redundant CPU can automatically switch and be in normal working condition; Check I/O modules, and replace some aging and corroded electrical connectors in time; Charge or discharge the battery in strict accordance with the battery use rules; Check the fan and clean it if necessary to make the air duct unblocked.Excitation system DSQC522
2.3 DCS software and hardware system operation and management
2.3.1 Operation management. The so-called operation management refers to daily patrol inspection, software management, spare parts management, etc. The software is the core of the DCS system, and the program is complex. Its configuration and modification must be carried out according to the regulations. At the same time, the modification information should be backed up to prevent the failure caused by data loss; If there is a problem with the DCS device, it is necessary to replace it with spare parts. Before installation and use, it is necessary to have a comprehensive test of its function to avoid the recurrence of the whole system failure.
2.3.2 Maintenance management. Maintenance management attaches importance to the maintenance process and procedures. In order to ensure the stable operation quality of the DCS system and ensure the normal operation for a long time, major maintenance must be carried out regularly, such as software backup, power cleaning, parts cleaning, etc.
With the development of science and technology, the DCS control system is becoming more mature and more widely used in various industrial production fields. It has become an indispensable automatic control equipment. The powerful function of DCS has brought huge economic benefits to industrial production.
ABB SCR module with drive board 3BHB003154R0101 high-voltage frequency converter power module
ABB ignition control card SCYC51020 control board 5761696-2D 58052582H
ABB motor protection REF601 CE446BB1NH feeder protection and measurement and control device inventory
ABB circuit board DSCA 130 MB200 module 57510001-AT/2 DSCA130 inventory
ABB circuit board card PFSK142 3BSE006505R1 PLC inventory module
ABB power module DSSR122M 48990001-LR rack power DSSR 122 M
ABB power module PFSA146 3BSE008844R1 PLC controller system inventory
ABB High Voltage Variable Frequency IGCT Module 5SHY3545L0009 Original Imported Spot
ABB high-voltage variable frequency thyristor GVC750BE101 imported IGBT inventory
ABB high-voltage frequency conversion module 336A4954ARP1 excitation control system original inventory
ABB high-voltage frequency conversion module 5SHY3545L0020 IGCT thyristor inventory
ABB high-voltage frequency conversion accessories 5SHY3545L0003 IGCT module 5SHY3545L0003 inventory
ABB high-voltage frequency converter module 5SHX1445H0001 IGCT thyristor imported with original packaging
ABB high-voltage frequency converter accessories 3BHE014105R0001 thyristor IGCT inventory
ABB high-voltage frequency converter accessories 5SHY3545L0006 original imported inventory
ABB high-voltage transformer module LXN1701-6G converter LXN17016G in stock
ABB High Voltage Control Board UAA326A02 HIEE300024R2 UA-A326-A02 Inventory
ABB high-voltage control accessories 5SHY3545L0004 thyristor module IGCT inventory
ABB high-voltage module 5SHY4045L0002 IGCT thyristor original imported inventory
ABB Industrial Automation Spare Parts PM825-1 Order No. 3BSE010800R1 Inventory
ABB Web tension system with tension electronic device PFEA111/112/113 PFEA11X
ABB rack RF522 3BSE000743R1 I/O framework module stock
ABB Robot Board DSCA121 57520001-U/3 Inventory Module DSCA 121
ABB Robot Air Control Unit ACU-01B 3HNA024871-001 Controller ACU01B
ABB Robot Control Board DSMC-110 57330001-N/4 Inventory DSMC110
ABB Relay Protector REF620 Digital Terminal Module Operation Screen Controller
ABB interface module CI854AK01-EA 3BSE030220R2 CI854A 3BSE030220R1
ABB Static Exciter Module UNS0881a-P.V2 3BHB006338R0002 Circuit Board
ABB web tension meter PFTL101BER-20.0KN 3BSE023161R1 force sensor
ABB thyristor circuit board 5SXE04-0150 GVC707AE01 high-voltage variable frequency control card inventory
ABB thyristor module 3BHB020720T0002 IGCT high-voltage accessories original imported inventory
ABB thyristor module 5SHX2645L0002 3HB012961R0001 5SHX 2645L0002
ABB thyristor module 5SHY3545L0001 high-voltage variable frequency original IGCT inventory
ABB thyristor module 5SHY3545L0005 excitation high-voltage control system inventory
ABB thyristor module 5SHY35L4510 original imported 5SHY series inventory
ABB thyristor module 5SHY4045L0006 3BHB030310R0001 PLC card IGBT
ABB thyristor module GVC714A101 order number 3BHB020538R0001 inventory
ABB Air Control Unit ACU-01 3HNA013719-001 Controller ACU01
ABB Control Processor Module DSPC172H 57310001-MP Control Board Inventory
ABB control panel CP6415 1SAP541510R0001 15 “touch screen 15 inch display screen
ABB control module CI865K01 CI865K01-eA base plate TP865 3BSE040795R1
ABB controller PM783F 3BDH000364R0002 base TB711F inventory PM 783F
ABB controller PM866AK01 3BSE050198R1 PM866A 3BSE093347K1
ABB controller board SCYC55830 system module 58063282A inventory
ABB controller unit PM858K02 3BSE082896R1 controller module PM858 inventory
ABB controller template AC 800PEC PPD539A102 Order number 3BHE039770R0102
ABB controller module 5SHX0660F0001 high-voltage variable frequency IGCT original imported inventory
ABB controller module CI856K01 3BSE026055R1 CI856 PLC in stock
ABB controller module DSDP451 57160001-X inventory DSDP 451
Abb controller module PM591-ETHA c2 1SAP150100R0170 CPU unit inventory
ABB control output module PFSK152 3BSE018877R2 3BSC980006R361 inventory
ABB control system module PM866A-2 3BSE081230R1 original imported inventory
ABB feeder protective relay REF610 1MRS050775 integrated protection REF 610 inventory
ABB Force Measurement PFCL201C-50.0KN 3BSE027070R50 Tensiometer
ABB excitation control module 5XSE02-138 IGBT thyristor 3BHE014105R0001 inventory
ABB Excitation Controller Template PPD113 Original Imported Inventory Automation Control Module
ABB connection unit PFSK109 PLC control board Lutec in stock
ABB pulse counting board DSDP150 57160001-GF positioning module DSDP-150
ABB pulse counting board DSDP160 57160001-KG PLC DSDP 160 module
ABB module PFSK130 3BSE002616R1 channel control board inventory PFSK 130
ABB module PM820-2 3BSE010798R1 PLC controller board inventory
ABB memory board DSMB125 57360001-AN/3 ASEA robot memory circuit board
ABB drive board SCYC51090 PLC module 57617276-C 58053899
ABB Sweden UAC346AE01 HIEE300831R0001 Board Circuit Board Inventory
ABB shooting unit card SCYC51010 ignition unit SCYC 51010 inventory
ABB Digital Output Module DSDO115A 3BSE018298R1 Control Board Card Inventory
ABB Digital Input Board DSDI110AV1 3BSE018295R1 Safety Input Module Inventory
ABB Digital Input Module DSDI146 3BSE007949R1 Safety Card Inventory
ABB Digital Terminal REF620E-1G FNBFNAAAANDA1BNN1XF Inventory
ABB Twisted Pair Modem TC512V1 3BSE018059R1 Efficient PP3304
ABB twisted pair modem TC516 3BSE012632R1 RS485 module
ABB horizontal weighing sensor PFTL101AE-0.5KN 3BSE004211R1 for paper machines
ABB communication module DSCS131 57310001-LM controller board DSCS 131 inventory
ABB communication module DSCS140 57520001-EV in stock in the same series DSCS 140
ABB communication box PU412 3BSE056479R1 RTA board MB300 PLC module
ABB communication interface module CI520V1 3BSE012869R1 CI520V1 inventory
ABB communication interface module CI810A 3BSE013262R1 PLC brand new inventory
ABB communication interface module CI853K01 3BSE018103R1 CI853 inventory
ABB communication interface module CI858K01 3BSE018135R1 CI858 PLC system
ABB communication interface module CI860K01 3BSE032444R1 PLC CI860 module inventory
ABB communication module CI801-EA 3BSE013262R1 PLC brand new CI801 inventory
ABB communication module CI820V1 3BSE025255R1 CI820 PLC system
ABB communication module CI830 020773R1301 013252R1 CI830S 3BSE013252R1
ABB communication module CI857K01 3BSE018144R1 CI857 PLC inventory
ABB communication module CI862K01 3BUA00037R1 CI862 PLC stock
ABB communication module CI867K01 (CI867+base TP867) 3BSE043660R1
ABB communication module CI867K01-EA 3BSE043660R2 CI867 CI867AK01 inventory
ABB Network Process Module INNPM12 Process Board Bailey Symphony Inventory
ABB system control board SCYC55830 PLC board 58063282A inventory
ABB System Control Board SCYC51040 Original 58052680E Inventory
ABB system status collector TC520 3BSE001449R1 collection card
ABB Display PP245 PROCESS PANEL 245 3BSC690103R1 Process Panel
ABB Field Controller PM803 ML1310 AC800F System PLC Module Inventory
ABB pressure measurement PFTL101AER-2.0KN 3BSE023012R1 tension control gauge
ABB pressure sensor PFCL201CE-10.0KN 3BSE027062R10 PFCL series
ABB pressure sensor PFCL201C series 3BSE027070R5 PFCL201C-5.0KN
ABB pressure sensor PFTL201C-20KN 3BSE027070R20 tension gauge
ABB pressure controller PFTL101BER-10.0KN 3BSE023160R1 paper tension control
ABB Paper Measurement PFCL201CE-50.0KN 3BSE027062R50 Tension Controller
ABB Paper Tension Measurement PFTL101AER-1.0KN 3BSE023011R1 Pressure Controller
ABB tension measurement PFTL101AER-0.5KN 3BSE023010R1 weighing sensor inventory
ABB tension measurement unit PFCL201CD-5.0KN 3BSE029774R5 inventory
ABB tension electronic control PFEA112-20 3BSE030369R0020 inventory
ABB Tensiometer PFCL201CD-20.0KN 3BSE029774R20 Tension Control System
ABB tension meter PFCL201CE-20.0KN 3BSE027062R20 tension controller
ABB tension meter PFTL101AE-2.0KN 3BSE004213R1 pillow type sensor
Company advantage service:
1.Has been engaged in industrial control industry for a long time, with a large number of inventories.
2.Industry leading, price advantage, quality assurance
3.Diversified models and products, and all kinds of rare and discontinued products
4.15 days free replacement for quality problems
1.Has been engaged in industrial control industry for a long time, with a large number of inventories.
2.Industry leading, price advantage, quality assurance
3.Diversified models and products, and all kinds of rare and discontinued products
4.15 days free replacement for quality problems
All kinds of module card driver controller servo motor servo motor embedded card wires and cables Power module control module is applicable to steel, hydropower, nuclear power, power generation, glass factory, tire factory, rubber, thermal power, paper making, shipping, navigation, etc
ABB — AC 800M controller, Bailey, PM866 controller, IGCT silicon controlled 5SHY 3BHB01 3BHE00 3HNA00 DSQC series
BENTLY — 3500 system/proximitor, front and rear card, sensor, probe, cable 3500/20 3500/61 3500/05-01-02-00-001 3500/40M 176449-01 3500/22M 138607-01
Emerson — modbus card, power panel, controller, power supply, base, power module, switch 1C31,5X00, CE400, A6500-UM, SE3008,1B300,1X00,
EPRO — PR6423 PR6424 PR6425 PR6426 PR9376 PR9268 Data acquisition module, probe, speed sensor, vibration sensor
FOXBORO — FCP270 FCP280 FCM10EF FBM207 P0914TD CP40B FBI10E FBM02 FBM202 FBM207B P0400HE Thermal resistance input/output module, power module, communication module, cable, controller, switch
GE —- IS200/215/220/230/420 DS200/215 IC693/695/697/698 VMICPCI VMIVME 369-HI-R-M-0-0-E 469 module, air switch, I/O module, display, CPU module, power module, converter, CPU board, Ethernet module, integrated protection device, power module, gas turbine card
HIMA — F3 AIO 8/4 01 F3231 F8627X Z7116 F8621A 984862160 F3236 F6217 F7553 DI module, processor module, AI card, pulse encoder
Honeywell — Secure digital output card, program module, analog input card, CPU module, FIM card
MOOG — D136-001-007 Servo valve, controller, module
NI — SCXI-1100 PCI – PXIE – PCIE – SBRIO – CFP-AO-210 USB-6525 Information Acquisition Card, PXI Module, Card
Westinghouse — RTD thermal resistance input module, AI/AO/DI/DO module, power module, control module, base module
Woodward — 9907-164 5466-258 8200-1300 9907-149 9907-838 EASYGEN-3500-5/P2 8440-2145 Regulator, module, controller, governor
YOKOGAWA – Servo module, control cabinet node unit
Main products:
PLC, DCS, CPU module, communication module, input/output module (AI/AO/DI/DO), power module, silicon controlled module, terminal module, PXI module, servo drive, servo motor, industrial display screen, industrial keyboard, controller, encoder, regulator, sensor, I/O board, counting board, optical fiber interface board, acquisition card, gas turbine card, FIM card and other automatic spare parts
ABB — AC 800M controller, Bailey, PM866 controller, IGCT silicon controlled 5SHY 3BHB01 3BHE00 3HNA00 DSQC series
BENTLY — 3500 system/proximitor, front and rear card, sensor, probe, cable 3500/20 3500/61 3500/05-01-02-00-001 3500/40M 176449-01 3500/22M 138607-01
Emerson — modbus card, power panel, controller, power supply, base, power module, switch 1C31,5X00, CE400, A6500-UM, SE3008,1B300,1X00,
EPRO — PR6423 PR6424 PR6425 PR6426 PR9376 PR9268 Data acquisition module, probe, speed sensor, vibration sensor
FOXBORO — FCP270 FCP280 FCM10EF FBM207 P0914TD CP40B FBI10E FBM02 FBM202 FBM207B P0400HE Thermal resistance input/output module, power module, communication module, cable, controller, switch
GE —- IS200/215/220/230/420 DS200/215 IC693/695/697/698 VMICPCI VMIVME 369-HI-R-M-0-0-E 469 module, air switch, I/O module, display, CPU module, power module, converter, CPU board, Ethernet module, integrated protection device, power module, gas turbine card
HIMA — F3 AIO 8/4 01 F3231 F8627X Z7116 F8621A 984862160 F3236 F6217 F7553 DI module, processor module, AI card, pulse encoder
Honeywell — Secure digital output card, program module, analog input card, CPU module, FIM card
MOOG — D136-001-007 Servo valve, controller, module
NI — SCXI-1100 PCI – PXIE – PCIE – SBRIO – CFP-AO-210 USB-6525 Information Acquisition Card, PXI Module, Card
Westinghouse — RTD thermal resistance input module, AI/AO/DI/DO module, power module, control module, base module
Woodward — 9907-164 5466-258 8200-1300 9907-149 9907-838 EASYGEN-3500-5/P2 8440-2145 Regulator, module, controller, governor
YOKOGAWA – Servo module, control cabinet node unit
Main products:
PLC, DCS, CPU module, communication module, input/output module (AI/AO/DI/DO), power module, silicon controlled module, terminal module, PXI module, servo drive, servo motor, industrial display screen, industrial keyboard, controller, encoder, regulator, sensor, I/O board, counting board, optical fiber interface board, acquisition card, gas turbine card, FIM card and other automatic spare parts
