来源：http://www.haycottage.com/ 发布时间：2022-07-28 浏览次数：
The contact of welding equipment will produce sparks when the circuit is closed, broken or the wire head is loose. Therefore, the fault of welding equipment can be checked according to the existence and size of sparks. Let's take a look at the details.
When two phases of the main contact of the contactor of the control motor have sparks and one phase has no sparks, it indicates that the phase without sparks has poor contact or the circuit is open; The spark of two phases in three phases is larger than normal, and the spark of the other phase is smaller than normal, so it can be preliminarily judged that the motor is short circuited or grounded between phases; The three-phase sparks are larger than normal, which may be caused by motor overload or mechanical part seizure.
In the control circuit, after the circuit is powered on, check the panel indicator light of the welding equipment or check the output signal to distinguish the possible cause of the fault.
After it is normal, press the start button once. If there is a slight spark when the normally open contact of the button is disconnected, it indicates that the circuit path and the fault is in the mechanical part of the contactor; If there is no spark between the contacts, it indicates an open circuit.
The electrical action procedure shall comply with the requirements of the welding equipment instructions and drawings. If the welding equipment on a circuit acts too early, too late or does not act, it indicates that the circuit or welding equipment is faulty.
In addition, Shandong CNC welding equipment manufacturers believe that the fault can also be analyzed and judged according to the sound, temperature, pressure and smell of the welding equipment. Using the intuitive method, not only the simple faults can be determined, but also the more complex faults can be reduced to a smaller range.
The voltage measurement method is to measure the voltage value and current value of each according to the power supply mode of the welding equipment and the working performance of the control circuit board, and compare them with the normal value. Specifically, it can be divided into partition block measurement method, subsection measurement method and point measurement method to judge the location and cause of the fault.
In addition, if the equipment is not used in excess, regular operation inspection and parts inspection should be carried out to ensure its integrity. The above is the answer to the problem of observing the welding equipment in detail during maintenance. If you need to purchase, please consult us http://www.haycottage.com OK.