The motor in the south of anhui vs micro motor system upgrade research

SHANGHAI WANNAN ELECTRIC MOTOR CO.,LTD|2015-06-12 16:19|5836 view

Micro motor control center (MCC) is essential for electrical engineering automation equipment, a factory, a production line, cluster the many motors, each motor must have since the forms of manipulation, open, broken, start, stop and change each other's interlocking, speed and torque control, fault disposal, trouble protection and indicator lamp each into a system, combined in one or several dozens of cabinets, constitute control center.


Practice of MCC is basically manual operation, manual operation monitoring, monitoring content rarely, low power, in the use of process we encountered the following problems, low power of manual operation, fault can not be timely disposal, data on the operation of the motor not to monitor and a fault alarm record can not be, about the operation accuracy will with the personnel changes and not the same, about operation personnel safety exists security risks, system safety and reliability has not satisfied with production needs. Reduce the competitiveness of the factory.


In recent years, along with the computer microprocessor is swift and violent development, presents a kind of intelligent motor protector and control center, namely IMCC (IntelligentMotorProtectorControlCentre). Its main feature is micro processor skills for MCC, of motor of multiple protection, monitoring and control, local or long-distance to multiple motor active operation and monitoring; IMCC selection control method of lax controls and gather supervision, between the stations operate independently, including selection of the manual / active control method can eliminate the influence between each other. The ability to get used to the development of network integration skills has greatly improved the initiative of MCC and the operating power, and has increased the security and reliability of the system..


The new intelligent control center selection leading digital motor protector as on-site real-time monitoring organization and performance of the organization and selection of industrial data bus communication data in detail, five some.


Some information detection, measurement of motor three-phase current; (operating current, rated current, no-load current, under current, current, trip starting impact current of the fault current); measurement; measuring motor It; three-phase voltage power grid frequency measurement; measurement; measuring control system of internal faults protection protection, operation over current; communication under current computer, send the information of various measurements and status, and accept the flow; starting failure; engine stall; stall operation; phase; overload (I2t); grounding fault or earth leakage; three-phase asymmetric or neutral drift; the relevant instructions based on RS485 protocol perform; communication failure etc..


The lower computer alarm protection: storage and record of the relevant data, together announced the urgent shutdown, the main circuit breaker tripping and other signals. When the trouble is cleaned, the lamp is off.. For protection of intercept operation. Under the instruction of switch, broken (contains reversible and irreversible and star - delta starting system and cutting operation) the reclosing operation or parameter setting; protective intercept exercise; promise or closed active reclosing, or delaying automatic reclosing; sequence record problems and the reasons; handling operations and protocol transform some; setting and parameter correction of motor protector; parameter selection and fault content display and to the motor protector announced operating instructions; skill standards that needs a machine on the standard and demand machine frequency not less than 1.7GHz.


Memory not less than 256M.


Hard disk not less than 40G.


Display 21 inch color display, the resolution is not less than


1280 * 102485Hz.


By the way UPS and stylus printer.


Transmission protocol skill standard machine: according to EN50170 PROFIBUSDP.


Data transmission speed: 12M / S active recognition bus system transmission rate.


Address space: maximum 128 bytes of input.


Output maximum 128 bytes.


Module number: maximum 8 block.


Interface: 9 pin D - SUB socket connector.


Supply voltage 24V: promised to scale 20 to 30V.


Protection level is IP20.


Ambient temperature: - 25 DEG C ~ 60 C communication selection of field bus PROFIBUS.


PROFIBUS is a kind of international, open, and independent of the equipment manufacturer's fieldbus standards. Widely used in the initiative of manufacturing, process industry and the initiative of buildings, transportation, power and other areas of the initiative.


PROFIBUS by three compatible with some components, namely the PROFIBUS-DP (decentralizedperiphery), PROFIBUSPA ProcessAutomation, PROFIBUSFMS FieldbusMessageSpecification.


PROFIBUS-DP: is a kind of high speed and low cost for communication, device level control system with I / O communication and. Application of PROFIBUS-DP agent 24VDC 4 ~ 20mA or desirable signal transmission.


PA - PROFIBUS: specifically for the process of active planning, can make the sensor and perform the organization on a bus, and have the intrinsic safety standards.


FMS - PROFIBUS: used in the workshop level monitoring network, is a token layout, real-time multi - master network.


PROFIBUS is a field bus skills for the factory automation workshop level monitoring and field equipment layer data communications and control. Can complete the on-site equipment layer to workshop level monitoring of dispersive type digital control and field communication network, so as to complete plant induction automation and intelligent field devices to provide feasible solutions.


Converter skill index operating voltage: serial power supply, no power supply operation current: 10mA special rate: 3



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