A multifunctional communication method for an integrated variable frequency motor

A frequency conversion motor and communication method technology, applied in electrical program control, program control in sequence/logic controllers, etc., can solve problems such as reasonable distribution, inability to achieve real-time monitoring, inability to achieve motor time and speed, etc. The effect of protecting safety

Active Publication Date: 2018-07-31
WOLONG ELECTRIC GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] When ordinary motors are in group control, relays can only be used for fault feedback, which cannot achieve real-time monitoring of the status of each motor in the group, nor can it achieve a reasonable allocation of motor time and speed based on external factors

Method used

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  • A multifunctional communication method for an integrated variable frequency motor
  • A multifunctional communication method for an integrated variable frequency motor
  • A multifunctional communication method for an integrated variable frequency motor

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Embodiment Construction

[0029] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0030]The present invention sets a communication protocol for data transmission between the integrated frequency conversion motor system and the host computer. The communication protocol is an integrated motor matching communication protocol, which provides authority operation, motor status query, user parameter setting, fault information query and fault clearing, etc. The protocol frame of the host 1 request frame and the slave 15 response frame included in the communication protocol is basically the same. According to the difference in the function code of the host 1 request frame, the slave 15 operates registers in different ways, such as: reading or writing registers. In addition, on the premise of ensuring the integrity of the communication content, the master 1 and the slave 15 correspondingly reduce the repeated content in the ...

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Abstract

The invention discloses a multifunctional communication method for an integrated variable frequency motor and relates to a variable frequency motor communication method. For monitoring and control on a common motor, fault feedback is realized only through a relay, real-time monitoring on each motor state in a group can not be realized, and reasonable distribution of the motor time and a rotation speed on the basis of external factors can not be realized. According to the multifunctional communication method, a communication protocol for data transmission between an integrated variable frequency motor system and a host computer is set to realize monitoring and control on the integrated variable frequency motor, monitoring and control authorities are divided, and monitoring and control in corresponding grades are respectively carried out by the host computer according to different authorities. According to the method, polling for each motor state in the group can be realized through communication monitoring, during communication abnormity, the motor automatically shuts down to protect the system, so safety and reliability are realized.

Description

technical field [0001] The invention relates to a communication method for a variable frequency motor, in particular to a multifunctional communication method for an integrated frequency conversion motor. Background technique [0002] With the popularity of integrated variable frequency motors, the traditional analog voltage input control system is increasingly unable to meet the requirements. At the same time, traditional motors cannot obtain accurate information when the motor is running, including real-time information such as voltage, current, speed, and internal parameters of the inverter during operation, and analog control cannot achieve accurate digital control for speed control. The current communication interface of the frequency converter cannot control the authority with the host, and it cannot achieve automatic shutdown protection of the slave when the communication is lost. In view of the fact that MODBUS has become a popular standard in the field of industria...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/04
CPCG05B19/04
Inventor 魏君燕姜泽廉晨龙严伟灿
Owner WOLONG ELECTRIC GRP CO LTD
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