Injection molding machine circuit board fault judgment method

How to judge whether the circuit board of the injection molding machine is faulty is a matter of concern to every injection molding machine management and maintenance personnel. If the maintenance personnel know a certain method of judging the circuit board failure of the injection molding machine, they can accurately and quickly judge the circuit of the injection molding machine. Whether the function of the board is normal, the downtime caused by the failure of the injection molding machine can be shortened, and the productivity can be improved, thereby providing a strong logistical support for the production department.

The first step in the method of judging the failure of the injection molding machine circuit board is to require the injection molding machine maintenance personnel to be familiar with the functions to be judged by the injection molding machine circuit board, and to know the function of the injection molding machine circuit board. The standard used, only with the judgment standard can judge whether the circuit board of the injection molding machine is normal.

The second part of the injection molding machine circuit board fault judgment method requires the injection molding machine maintenance personnel to read, read and analyze the electrical schematic diagram of the injection molding machine. The electrical schematic diagram is a map for judging the signal flow of the circuit board of the injection molding machine. After reading and analyzing the circuit principle, you can analyze the relevant signals input to the circuit board according to the circuit schematic diagram, and after processing the signals by the relevant circuits inside the circuit board, finally Which terminal blocks are output from, so that the detection point can be determined.

The third step of the method for judging the failure of the circuit board of the injection molding machine is to require the maintenance personnel of the injection molding machine to use testing instruments. In order to accurately judge whether the function of the circuit board of the injection molding machine is good, it is difficult to judge whether the circuit board of the injection molding machine is in good function only by looking at the appearance of the circuit board of the injection molding machine. Electrical parameters related to the circuit board of the injection molding machine, according to the parameters to evaluate whether the output signal of the circuit board of the injection molding machine is normal. When testing, find out the relevant electrical parameters according to the electrical schematic diagram of the injection molding machine, and evaluate whether the signal output by the circuit board of the injection molding machine is normal according to the parameters. When testing, find out the relevant testing points according to the electrical schematic diagram of the injection molding machine, and then use a multimeter or a wave detector to detect the electrical parameters of the testing points, and compare them with the electrical parameters given by the injection molding machine manufacturer. The point is normal, so some key points are tested in turn. If each test point meets the standard given by the injection molding manufacturer, it means that the tested circuit board of the injection molding machine is good, otherwise, it means that the tested circuit board of the injection molding machine is good. There is a malfunction.

In addition to the above steps, it is also possible to roughly judge whether the function of the circuit board of the injection molding machine is normal according to the indication of the indicator lights on the circuit board and the operation of the relevant relays or solenoid valves, but this method can only be a rough judgment. , It also requires the maintenance personnel of the injection molding machine to be familiar with the meaning of each indicator light and the action sequence of each electrical appliance (relay, solenoid valve, servo driver) and other components before they can be used.