Motor test system based on PLC

Abstract

The invention provides a motor test system based on a PLC. The motor test system comprises an upper computer, wherein the upper computer is connected with a PLC and a tested motor controller through aswitch, the input end of the PLC is respectively connected with a frequency converter, a torque sensor, a temperature sensor, a voltage sensor and a current sensor, the output end of the PLC is connected with a direct-current power supply cabinet and a dynamometer through a relay and a contactor, and the direct-current power supply cabinet supplies power to the whole test system. The motor test system based on the PLC can provide alternating current power supply and direct current power supply for the tested motor controller, different controller requirements are met, the upper computer is arranged to realize remote monitoring and control of the whole system, the safety of the system is greatly improved, testing and recording are carried out, manpower and material resources are saved, theoverload capacity of the device is improved by water cooling and air cooling devices, the peak value of each performance of the motor is tested, the UPS is arranged to ensure the safety of test dataduring unexpected power failure, the PLC controls the relay firstly, and the contactor is controlled by the relay, so that the PLC is enabled to be far away from high voltage and large current, and the safety of the motor test system based on the PLC is protected.

Description

technical field [0001] The invention relates to a PLC-based motor testing system. Background technique [0002] The motor test system in the prior art cannot provide two kinds of test power, DC and AC, and does not provide a cooling device for the motor under test and the controller, which greatly limits the application of the system. Most motor test systems have scattered test instruments, which require manual integration of data, wasting a lot of manpower and material resources. Although some motor test systems have a host computer for data display and recording, they cannot realize remote monitoring and control of the entire system by a host computer, and cannot Provide accidental protection for test data, greatly reducing the security and reliability of the system. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a PLC-based motor testing system. [0004] The present invention is achieved through the fo...

AI Technical Summary

Problems solved by technology

[0002] The motor test system in the prior art cannot provide two kinds of test power, DC and AC, and does not provide a cooling device for the motor under test and the controller, which greatly limits the application of the system

Most motor test systems have scattered test instruments, which require manual integration of data, wasting a lot of manpower and material resources. Although some motor test systems have a host computer for data display and recording, they cannot realize remote monitoring and control of the entire system by a host computer, and cannot Provide accidental protection for test data, greatly reducing the security and reliability of the system

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