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以下是我司主營(yíng)品牌，歡迎隨時(shí)詢價(jià)：
主營(yíng)：知名品牌的PLC 、DCS 系統(tǒng)備件 模塊
〖⒈〗Allen-Bradley(美國(guó)AB)系列產(chǎn)品》
〖⒉〗Schneider(施耐德電氣)系列產(chǎn)品》
〖⒊〗General electric(通用電氣)系列產(chǎn)品》
〖⒋〗Westinghouse（美國(guó)西屋）系列產(chǎn)品》
〖⒌〗SIEMENS(西門子系列產(chǎn)品)》
〖⒍〗銷售ABB Robots. FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、Panasonic Robots、MOTOMAN Robots
〖⒎〗estinghouse（西屋）： OVATION系統(tǒng)、WDPF系統(tǒng)、MAX1000系統(tǒng)備件。
〖⒏〗Invensys Foxboro（福克斯波羅）：IA Series系統(tǒng)，F(xiàn)BM（現(xiàn)場(chǎng)輸入輸出模塊）順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉(zhuǎn)換、輸入輸出信號(hào)處理、數(shù)據(jù)通信及處理等。Invensys Triconex 冗余容錯(cuò)控制系統(tǒng)、基于三重模件冗余（TMR）結(jié)構(gòu)的現(xiàn)代化的容錯(cuò)控制器。
〖⒐〗Siemens(西門子)：Siemens MOORE， Siemens Simatic C1，Siemens數(shù)控系統(tǒng)等。
〖⒑〗Bosch Rexroth（博世力士樂(lè)）：Indramat，IO模塊,PLC控制器,驅(qū)動(dòng)模塊等。
〖⒒〗Motorola（摩托羅拉）：MVME 162、MVME 167、MVME1772、MVME177等系列。
什么是I/O？
控制系統(tǒng)需要建立信號(hào)的輸入和輸出通道，這就是I/O,DCS中的I/O一般是模塊化的，一個(gè)I/O模塊上有一個(gè)或多個(gè)I/O通道，用來(lái)連接傳感器和執(zhí)行器（調(diào)節(jié)閥）。常用的I/O信號(hào)一般分為：AI、PI、AO、DI和DO。AI－－模擬量輸入信號(hào)PI－－脈沖量輸入信號(hào)AO－－模擬量輸出信號(hào)DI－－數(shù)字量輸入信號(hào)DO－－數(shù)字量輸出信號(hào)ABB 3BHB003689 （AC800F模塊） 工控系統(tǒng)自動(dòng)化備件 可提供產(chǎn)品報(bào)價(jià)、資料 細(xì)節(jié)請(qǐng)與我聯(lián)系
ABB 3BHB003689 （AC800F模塊） 工控系統(tǒng)自動(dòng)化備件可提供產(chǎn)品詳細(xì)資料:輸出端接線分為獨(dú)立輸出和公共輸出。在不同組中，可采用不同類型和電壓等級(jí)的輸出電壓。但在同一組中的輸出只能用同一類型、同一電壓等級(jí)的電源。
● PLC的輸出負(fù)載可能產(chǎn)生干擾，因此要采取措施加以控制，如直流輸出的續(xù)流管保護(hù)，交流輸出的阻容吸收電路，晶體管及雙向晶閘管輸出的旁路電阻保護(hù)。
良好的接地是保證PLC可靠工作的重要條件，可以避免偶然發(fā)生的電壓沖擊危害。接地的目的通常有兩個(gè)，其一為了安全，其二是為了干擾。完善的接地系統(tǒng)是PLC控制系統(tǒng)抗電磁干擾的重要措施之一。PLC控制系統(tǒng)的地線包括系統(tǒng)地、地、交流地和保護(hù)地等。接地系統(tǒng)混亂對(duì)PLC系統(tǒng)的干擾主要是各個(gè)接地點(diǎn)電位分布不均，不同接地點(diǎn)間存在地電位差，引起地環(huán)路電流，影響系統(tǒng)正常工作。例如電纜層必須一點(diǎn)接地，如果電纜層兩端A、B都接地，就存在地電位差，有電流流過(guò)層，當(dāng)發(fā)生異常狀態(tài)如雷擊時(shí)，地線電流將更大。此外，層、接地線和大地有可能構(gòu)成閉合環(huán)路，在變化磁場(chǎng)的作用下，層內(nèi)又會(huì)出現(xiàn)感應(yīng)電流，通過(guò)層與芯線之間的耦合，干擾信號(hào)回路。若系統(tǒng)地與其它接地處理混亂，所產(chǎn)生的地環(huán)流就可能在地線上產(chǎn)生不等電位分布，影響PLC內(nèi)邏輯電路和模擬電路的正常工作。PLC工作的邏輯電壓干擾容限較低，邏輯地電位的分布干擾容易影響PLC的邏輯運(yùn)算和數(shù)據(jù)存貯，造成數(shù)據(jù)混亂、程序跑飛或死機(jī)。模擬地電位的分布將導(dǎo)致測(cè)量精度下降，引起對(duì)信號(hào)測(cè)控的嚴(yán)重失真和誤動(dòng)作。
The following are our main brands, welcome to inquire at any time:
Main: Well-known brand PLC, DCS system spare parts module
〖 〖 〗Allen-Bradley(AB) Series Products
〖⒉〗Schneider Electric Series Products
〖 〖 〗General electric Series Products
〖 4 〗Westinghouse series Products
〖⒌〗SIEMENS
Sales: ABB Robots. FANUC Robots, YASKAWA Robots, KUKA Robots, Mitsubishi Robots, OTC Robots, Panasonic Robots, MOTOMAN Robots
〖 〖 〖 〖 〗] estinghouse (Westinghouse) : OVATION system, WDPF system, MAX1000 system spare parts.
〖 Invensys Foxboro (FOXboro) : IA Series system, FBM (field input and output module) sequence control, ladder logic control, accident recall processing, digital-to-analog conversion, input and output signal processing, data communication and processing, etc. Invensys Triconex Redundant fault-tolerant control system, modern fault-tolerant controller based on triple module redundancy (TMR) structure.
〖⒐〗Siemens: Siemens MOORE, Siemens Simatic C1, Siemens Numerical control system, etc.
〖⒑〗Bosch Rexroth: Indramat, IO module,PLC controller, drive module, etc.
〖⒒〗Motorola: MVME 162, MVME 167, MVME1772, MVME177 and other series.
What is I/O?
The control system needs to establish the input and output channels of the signal, which is I/O, I/O in DCS is generally modular, an I/O module has one or more I/O channels, used to connect the sensor and the actuator (regulator).
Commonly used I/O signals are generally divided into: AI, PI, AO, DI and DO.
AI- analog input signal
PI- pulse volume input signal
AO- analog output signal
DI- digital input signal
DO- digital output signal
ABB 3BHB003689 (AC800F module) industrial control system automation spare parts can provide product quotation, information details please contact me
ABB 3BHB003689 (AC800F module) industrial control system automation spare parts can provide product details: The output terminal wiring is divided into independent output and public output. In different groups, different types and voltage levels of output voltages can be used. However, the output in the same group can only use the same type of power supply and the same voltage level.
● When the relay output is used, the size of the inductive load to be borne will affect the service life of the relay, therefore, the use of inductive load should be a reasonable choice, or add an isolated relay.
● The output load of PLC may cause interference, so measures should be taken to control it, such as continuous current tube protection for DC output, resistance and capacitance absorption circuit for AC output, and bypass resistance protection for transistor and bidirectional thyristor output.
Select the ground point correctly and perfect the grounding system
Good grounding is an important condition to ensure the reliable operation of PLC, which can avoid the harm of accidental voltage shock. The purpose of grounding is usually two, one is for safety, and the other is for interference. Perfect grounding system is one of the important measures for PLC control system to resist electromagnetic interference.
The ground wire of PLC control system includes system ground, ground, alternating ground and protected ground. The disturbance of the grounding system to the PLC system is mainly the uneven distribution of potential at each ground point, and the ground potential difference between different ground points, which causes the ground loop current and affects the normal operation of the system. For example, the cable layer must be grounded at one point. If A and B at both ends of the cable layer are grounded, there is a ground potential difference, and a current flows through the layer. When an abnormal state occurs, such as lightning strikes, the ground current will be larger.
In addition, the layer, ground wire and earth may form a closed loop, and under the action of changing magnetic fields, induced current will appear in the layer, through the coupling between the layer and the core wire, interfering with the signal loop. If the system is confused with other grounding, the resulting ground circulation may produce unequal potential distribution on the ground wire, affecting the normal operation of the logic circuit and analog circuit in the PLC. The logic voltage interference tolerance of PLC is low, and the distribution interference of the logic ground potential is easy to affect the logic operation and data storage of PLC, resulting in data confusion, program flying or crash. The distribution of simulated ground potential will lead to the decrease of measurement accuracy, and cause serious distortion and misoperation of signal measurement and control.
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