Electrical fault query system of bridge crane

Abstract

The invention discloses an electrical fault query system of a bridge crane. The electrical fault query system of a bridge crane comprises a programmable logic controller (PLC), a modularized input / output (I / O) station, and a touch display screen. A data processing (DP) terminal of the modularized I / O station, a DP terminal of the PLC and a DP terminal of the touch display screen are connected by a ProfibusDP bus. The PCL and the modularized I / O station receive status signals transmitted by a main lifting control mechanism, an auxiliary lifting control mechanism, a trolley operation control mechanism and a cart operation control mechanism, carry out a periodic scan process on the received status signals, and determine if the corresponding control mechanisms produce faults, wherein if faults exist, corresponding fault signals are output to the touch display screen by the PCL and the modularized I / O station, and after receiving the corresponding fault signals output by the PCL and the modularized I / O station, the touch display screen decodes the fault signals into a corresponding text and displays the corresponding text. Through the electrical fault query system of a bridge crane, checked faults can be directly displayed on the touch display screen which is a visualization device, so that fault query time of the bridge crane is shortened and fault query efficiency of the bridge crane is improved.

Description

technical field [0001] The invention relates to an electrical fault management system of a bridge crane, in particular to an electrical fault inquiry system of a bridge crane. Background technique [0002] Bridge cranes are important transportation and lifting tools in industrial and mining, mechanical processing and other industrial fields. Especially in the field of steel manufacturing, bridge cranes play a key role in ensuring safe and efficient production. At present, there are mainly two types of electrical control systems for bridge cranes in China: (1) the control system directly controlled by the contactor; (2) the comprehensive control system with PLC as the core. The two control systems represent traditional and newer electrical control methods respectively. The second type of control system usually mainly includes PLC, main lifting control mechanism, auxiliary lifting control mechanism, trolley operation control mechanism, cart operation control mechanism, etc. ...

AI Technical Summary

Problems solved by technology

However, the query of electrical faults mainly relies on technical workers to manually search according to the equipment drawings and on-site equipment status. Since there are many fault detection points and corresponding alarm devices, the efficiency of querying fault points is low.

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