A converter interface testing device and method

Abstract

The invention discloses a converter interface testing device and method. The device comprises: a PLC, an industrial computer, an analog input interface, an analog output interface, a digital input interface, a digital output interface and a communication interface. The PLC is connected to the corresponding interface of the external converter through the analog input interface, the analog output interface, the digital input interface, and the digital output interface, the PLC is connected to the industrial computer, and the industrial computer is connected to the converter through the communication interface, or The PLC is connected with the converter through the communication interface. The present invention utilizes the high-speed computing capability, standardized modules and powerful expansion capability possessed by the combination of the industrial computer and the PLC to quickly test various interfaces of the converter through software logic control, and adopts a movable structure design at the same time, so that The device can effectively, quickly, comprehensively and flexibly complete the interface testing work.

Description

technical field [0001] The invention relates to the field of electrical equipment, in particular to an interface testing device and method applied to converters. Background technique [0002] In order to meet the requirements of the site, the converter generally has a variety of specifications and a large number of external interfaces such as hard-wired I / O, bus communication, and Ethernet communication. Before the converter leaves the factory, a series of inspections and tests are required on the external interface of the converter to reduce the hidden danger of on-site failure. At present, general instruments such as signal generators and oscilloscopes are generally used as interface test equipment for testing hard-wired interfaces of converters on the market. For communication interfaces, testing and testing equipment on the market generally can only test hardware connections, and does not have the function of software protocol testing and testing. At the same time, the...

AI Technical Summary

Problems solved by technology

The disadvantages of the existing technology are: the existing interface testing method adopts the manual method, and the test equipment such as oscilloscope and signal generator is used. These equipment need to be set up when using them, which is not only low in efficiency but also prone to errors

At the same time, due to the differences in the site requirements of the converter operation, the requirements of the communication interface are different, the specific requirements of the site cannot be simulated during the test, and some unexpected accidents may occur during the actual operation on site

[0004] Therefore, until now there is no test platform product that can efficiently and comprehensively test the converter interface routinely

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