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从事电气维修的人员都有这样的体会,故障难查,而修起来很快,辛辛苦苦查了几天,可能只是一个螺丝松了。传统的检修方法是根据电路图分析故障的可能原因,然后用万用表或示波器逐点检查、反复试验,逐步缩小故障范围。对于疑难故障,特别是有关时序的问题,这种方法就力不从心了、应用“电气故障诊断仪”,可解决电气维修中的各种问题。通过记录和显示电器的工作过程,提供电气检修和事故分析的依据。由于考虑了电气维修工作的实际需要,它可以同时显示和记录24路开关量(有无电压)和4路模拟量(电压高低、电流大小、转速、压力、温度等);还可从电视屏幕上看到各电器的动作情况和先后顺序,以及电器和机械的配合情况。因此,使用该仪器可很快查出故障的原因和部位。下面介绍几个实例。 1.一台苏制立式车床,故障现象是主传动随机性停车。造成这种故障的原因很多,回路中有自锁、互锁、保护和其它触点,任何一处有问题都可能引起这种故障现象。过去查这种故障很费时间。而用“电气故障诊断仪”只花十几分钟就查出来了。诊断方法是先把可
Electrical maintenance staff have such an experience, failure difficult to check, and repair quickly, worked hard for a few days, may be just a screw loose. The traditional method of repair is based on the circuit diagram analysis of the possible causes of failure, and then use a multimeter or oscilloscope point by point inspection, repeated testing, and gradually narrow the scope of the fault. For difficult problems, especially with regard to timing issues, this method can not do anything at all. The application of “Electrical Fault Diagnosis Instrument” can solve various problems in electrical maintenance. Through the recording and display of electrical work process, provide basis for electrical maintenance and accident analysis. Considering the actual needs of electrical maintenance work, it can simultaneously display and record 24-way switch (with or without voltage) and 4 analog (voltage level, current size, speed, pressure, temperature, etc.); but also from the TV screen See the electrical actions and the order, as well as electrical and mechanical cooperation. Therefore, using the instrument can quickly find the cause and location of the fault. Here are a few examples. 1. A Soviet-made vertical lathe, failure phenomenon is the main drive random parking. There are many reasons for this type of failure. There are self-locking, interlocking, protective and other contacts in the circuit, and problems can occur at any one point. In the past to check this fault is time-consuming. The use of “Electrical Troubleshooting” only took a dozen minutes to find out. Diagnosis is the first to be