The software fault is mainly caused by some alarm-free faults when the index control machine is running. This fault can be repaired by adjusting the 340 user program. The hardware fault mainly refers to the fault of the 340 input and output modules. This fault can be modified by the 340 program or the standby interface can be used instead of the faulty interface.
Strong electrical failure. A strong electrical fault is a fault caused by electrical components such as relays, switches, contactors, motors, electromagnets, fuses, and the like. In terms of high-voltage partial faults, maintenance and diagnosis are relatively easy and convenient, but it is worth noting that the frequency of faults is higher than that of weak currents, and it is in high-voltage and high-current operating conditions, and the risk is high.
The method of measurement mainly refers to a method in which the maintenance personnel fully mobilize the senses of the person to judge, guess and guess the parts where the fault may occur. The specific method is to visually measure, touch, listen and other methods, and analyze and judge the cause of the fault according to various possible flares, smoke, smoke, etc., or narrow the scope of the fault, and lay a good foundation for finding the fault. For example, according to the phenomenon of component burning, smoking, cracking, etc., it can be judged whether there is overcurrent, overvoltage, short circuit and the like.
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