Device and method for testing Hall mutual inductor of port machinery equipment

Abstract

The invention discloses a device and method for testing a Hall mutual inductor of port machinery equipment. The device mainly comprises a switching power supply, an LED amplitude discrimination indication circuit, an output operation detection circuit, a digital display meter, a heavy current generator, an alternating-current voltmeter, a time-delay operation detection reference voltmeter and an output operation detection reference voltmeter. According to a 0-4V alternating-current voltage signal value at a detection output end of the Hall mutual inductor, sampling comparison is carried out bytaking the size ratio of the load current on the primary side as a basis, the output load current of a driver is replaced by using the heavy current generator, and a wire of the heavy current generator passes through a center hole of the Hall mutual inductor so as to form a closed loop for the heavy current generator and enable the heavy current generator to generate load current. The main purpose of the device is to test the working state of the Hall mutual inductor in the driver during the operation of port loading and unloading equipment, so that the operating condition at work can also betruly reflected when the Hall mutual inductor is not on the driver, thereby being capable of effectively testing the state of the Hall mutual inductor, and carrying out zero position and amplitude adjustment and identification during the test so as to judge whether the Hall mutual inductor is normal or not.

Description

technical field [0001] The invention relates to the field of electrical automation technology for container terminal loading and unloading equipment, in particular to a testing device and method for Hall transformers of port machinery equipment. Background technique [0002] The main equipment in the port is bridge cranes and gantry cranes, and the main electrical control systems of these port machinery equipment mostly use Japanese Yaskawa drives, and the UND-600 / 600 (4V / 600AT) Hall transformers used in the drives are customized by Yaskawa. It is a necessary electromechanical automation feedback device for detecting, monitoring, sampling, controlling and protecting the load current of motors such as hoisting, carts, trolleys, etc. It is one of the commonly used devices in modern automation industrial control equipment. The Hall transformers on the port machinery equipment are all installed on the three-phase load output terminals of the drive. As the service life increases,...

AI Technical Summary

Problems solved by technology

From a technical point of view, if there is a drift in the parameters, the zero position and amplitude value on the Hall transformer can generally be adjusted to make the parameters meet the requirements and can continue to be used. When the output AC signal changes suddenly or deviates abnormally, the original one can only be replaced. device, but it is difficult to replace with other transformers, the main bottleneck is reflected in the correctness of parameters and installation volume, so the original transformer is often replaced, and the cost of replacement and maintenance is high

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