本店公告 ♥：
现货供应，图片仅作参考，下单之前 请带型号咨询客服，
感谢您的支持！♥

以下是我司主营品牌，欢迎随时询价：
主营：知名品牌的PLC 、DCS 系统备件 模块
〖⒈〗Allen-Bradley(美国AB)系列产品》
〖⒉〗Schneider(施耐德电气)系列产品》
〖⒊〗General electric(通用电气)系列产品》
〖⒋〗Westinghouse（美国西屋）系列产品》
〖⒌〗SIEMENS(西门子系列产品)》
〖⒍〗销售ABB Robots. FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、Panasonic Robots、MOTOMAN Robots
〖⒎〗estinghouse（西屋）： OVATION系统、WDPF系统、MAX1000系统备件。
〖⒏〗Invensys Foxboro（福克斯波罗）：IA Series系统，FBM（现场输入输出模块）顺序控制、梯形逻辑控制、事故追忆处理、数模转换、输入输出信号处理、数据通信及处理等。Invensys Triconex 冗余容错控制系统、基于三重模件冗余（TMR）结构的现代化的容错控制器。
〖⒐〗Siemens(西门子)：Siemens MOORE， Siemens Simatic C1，Siemens数控系统等。
〖⒑〗Bosch Rexroth（博世力士乐）：Indramat，IO模块,PLC控制器,驱动模块等。
〖⒒〗Motorola（摩托罗拉）：MVME 162、MVME 167、MVME1772、MVME177等系列。

什么是I/O？

控制系统需要建立信号的输入和输出通道，这就是I/O,DCS中的I/O一般是模块化的，一个I/O模块上有一个或多个I/O通道，用来连接传感器和执行器（调节阀）。常用的I/O信号一般分为：AI、PI、AO、DI和DO。AI－－模拟量输入信号PI－－脉冲量输入信号AO－－模拟量输出信号DI－－数字量输入信号DO－－数字量输出信号ABB 3BHB003689 （AC800F模块） 工控系统自动化备件 可提供产品报价、资料 细节请与我联系

ABB 3BHB003689 （AC800F模块） 工控系统自动化备件可提供产品详细资料:输出端接线分为独立输出和公共输出。在不同组中，可采用不同类型和电压等级的输出电压。但在同一组中的输出只能用同一类型、同一电压等级的电源。

● PLC的输出负载可能产生干扰，因此要采取措施加以控制，如直流输出的续流管保护，交流输出的阻容吸收电路，晶体管及双向晶闸管输出的旁路电阻保护。

良好的接地是保证PLC可靠工作的重要条件，可以避免偶然发生的电压冲击危害。接地的目的通常有两个，其一为了安全，其二是为了干扰。完善的接地系统是PLC控制系统抗电磁干扰的重要措施之一。PLC控制系统的地线包括系统地、地、交流地和保护地等。接地系统混乱对PLC系统的干扰主要是各个接地点电位分布不均，不同接地点间存在地电位差，引起地环路电流，影响系统正常工作。例如电缆层必须一点接地，如果电缆层两端A、B都接地，就存在地电位差，有电流流过层，当发生异常状态如雷击时，地线电流将更大。此外，层、接地线和大地有可能构成闭合环路，在变化磁场的作用下，层内又会出现感应电流，通过层与芯线之间的耦合，干扰信号回路。若系统地与其它接地处理混乱，所产生的地环流就可能在地线上产生不等电位分布，影响PLC内逻辑电路和模拟电路的正常工作。PLC工作的逻辑电压干扰容限较低，逻辑地电位的分布干扰容易影响PLC的逻辑运算和数据存贮，造成数据混乱、程序跑飞或死机。模拟地电位的分布将导致测量精度下降，引起对信号测控的严重失真和误动作。

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.