CM808 智能MCC 控制保护管理装置是瑞安半岛（中国）在研究国外同类产品、总结国内大量 MCC 电气系统典型设计经验的基础上，为适应电气系统二次设备终端智能化的趋势，针对 MCC 回路的设计特点推出的新一代数字式、强抗干扰型智能 MCC 控制保护管理装置。

产品主要用于低压电动机控制回路中，实现对电动机的各种保护、监测及控制功能，并能通过现场总线，实现对电动机回路的远程监控。

CM 808智能MCC 控制保护管理装置采用通用化设计理念，在简化一次回路的基础上（省去了传统的热继电器、热保护器、欠压过压保护器等多种保护器；取消了时间继电器、中间继电器、辅助继电器、电流互感器、仪表、转换开关、指示灯、可编程逻辑控制器等多种二次分立元件），完成了二次回路的控制、保护、联锁、测量、信号、通讯等功能，极大提高了设计与生产效率，同时降低了用户现场调试及维护工作量，缩短了项目设计及调试周期，具有明显的综合效益。

功能特征 

◆辅助电源支持DC110V/220V或AC220V。

◆硬件体系采用分布式结构设计，模块化、标准化程度高，安装方便、易于组网，便于现场维护。

◆所有接线全部采用即插即拔的插头联接方式，使用具有高可靠性的插件，彻底消除接触不良的隐患。

◆采用背插式结构，强弱电完全分开，可大大减少外部电磁干扰在弱电侧的耦合，增强装置的抗干扰能力，提高其可靠性和安全性。

◆采用Profibus DP-V1冗余通讯方式。

◆采用32位工业级微处理器，速度快、精度高。

◆交流采样使用真有效值（RMS）算法，全面反映谐波电流的影响。

◆自适应变频采样技术，适用于变频器回路。

◆灵活的多种控制方式，各控制权限相互闭锁。

◆装置小型化设计，安装方式灵活。

◆全金属外壳设计，有效屏蔽外界电磁干扰。

◆汉字液晶，丰富的菜单显示，界面友好。

◆12路开关量输入回路，采用内部DC24V电源驱动，传输距离远，可靠安全性高。

◆装置内部控制触点带有保护电路，无需外加浪涌吸收器即可有效保护触点。

◆装置内带自记忆芯片，无需外配单独电源模块即可实现“抗晃电”功能及电压恢复自起动功能。

◆解决了热继电器和 MCCB 过载部分不能模拟 MCCB 负荷的电特性和热特性的缺憾，在节省热继电器、简化 MCCB 构造的基础上，能更好地保护用电设备。

◆解决了 MCCB 瞬时脱扣器对长距离供电电动机端单相接地保护灵敏度不够的问题，了以往针对该问题单独加装单相接地保护的手段。

◆完善的过载保护。热模型考虑了电机正负序电流综合热效应，通过发热常数和散热常数精确模拟电机的发热和散热过程。

◆丰富的可编程逻辑，可实现复杂工艺联锁(如电动机间的联锁、电动机与液位、温度等物理量的联锁)，提高了设计效率。

◆内置光电隔离的4~20mA 输出接口，输出电量可选，且范围可调。

◆采用工业现场总线技术(Profibus-DP/ModBus-RTU)可以快捷地与监控系统、PLC通讯联网，实现了远方高级管理功能。

◆双通讯接口设计，可实现网络冗余，大大提高通讯的可靠性，组网方式灵活。

◆强大的统计管理分析功能（事件记录、管理记录），方便用户实时掌握电动机的运行状态。

CM808 intelligent MCC system is Ruian Gongtai Electric Appliance Co. Ltd based on similar products abroad, summarize the experience of a number of typical design MCC electrical system in China, in order to adapt to the electrical system of two terminal equipment intelligent trend, a new generation of digital, strong anti-interference intelligent MCC system for the design. The launch of the MCC loop.

The products are mainly used in the low voltage motor control circuit, and realize the various protection, monitoring and control functions of the motor, and can realize the remote monitoring of the motor circuit through the field bus.

CM 808 intelligent MCC system using the general design idea, in a loop on the basis of the simplified (omitted thermal relay, traditional thermal protection, undervoltage and overvoltage protection device and other protective devices; cancel time relay, intermediate relay, auxiliary relay, current transformer, instrument, switch, indicator, programmable logic controller and other two discrete components), completed the two loop control, protection, interlock, measurement, signal, communication and other functions, which greatly improves the design and production efficiency, and reduce the debugging and maintenance of user workload, shorten the project design and debugging cycle, has comprehensive benefits the obvious.

Functional characteristics

The auxiliary power supply support DC110V/220V or AC220V.

The hardware system adopts distributed architecture design, modular, high degree of standardization, convenient installation, easy networking, convenient on-site maintenance.

We all use all the wiring plug and plug connection drawing, using high reliability of the plug-in, eliminate the hidden danger of bad contact.

It adopts back insert structure, electrical completely separate, can greatly reduce the external electromagnetic interference coupling in low voltage side, enhance the ability of anti-jamming devices, improve the reliability and safety.

It adopts Profibus DP-V1 redundant communication mode.

It uses a 32 bit microprocessor, high speed and high precision.

The use of true RMS AC sampling (RMS) algorithm, fully reflect the influence of harmonic current.

The adaptive frequency sampling technique for inverter circuit.

A variety of control methods - flexible, the mutual locking control authority.

The miniaturization of the device design, flexible installation.

The metal shell design, effectively shielding the external electromagnetic interference.

The Chinese characters LCD, rich menu display, friendly interface.

The 12 switch input circuit, driven by internal DC24V power, transmission distance, high safety and reliability.

The internal control device contacts with protective circuit, no additional surge absorber can effectively protect the contact.

The device with self memory chip, without a separate power distribution module can realize "anti shake function and voltage recovery self starting function.

We solve the electrical and thermal properties of thermal overload relay and MCCB part can not simulate the load of MCCB defects, based on saving the thermal relay, simplified MCCB structure, can better protect the electrical equipment.

It solves the MCCB instantaneous release of long distance power supply motor end single phase protection sensitivity is not enough, in the past according to the problem of adding a separate single-phase grounding protection means.

The perfect overload protection. The thermal model considers the combined thermal effects of the positive and negative sequence currents of the motor, and accurately calculates the heating and cooling process of the motor through the heating constant and the heat dissipation constant.

The rich programmable logic, can realize complex process (such as physical interlocking interlocking interlocking between the motor and the motor, liquid level, temperature and so on), improve the efficiency of design.

The built-in 4~20mA output interface photoelectric isolation, the output power is optional, and adjustable range.

The use of industrial fieldbus technology (Profibus-DP/ModBus-RTU) can quickly and network monitoring system, PLC communication, to carry out advanced management function.

The design of the dual communication interface, can realize the network redundancy, greatly improve the reliability of communication, flexible networking.

The statistics management powerful analysis function (event records, records management, user) to control the real-time operating state of the motor.