Model: CUT150HSS failure phenomenon: Manually moving the X-axis too fast, causing the stroke switch to be killed. Troubleshooting: Open the control cabinet door and find that the SUS-33 circuit board GL16 indicator light is on, the K4 relay is closed, there is +60V voltage output, but the Y motor still does not move, the message 385 appears (Y-axis circuit board is damaged), put X, Y The axis IMC-05 board is interchanged, the fault remains, and the message 384 (X-axis board damage) appears. Fault on the Y-axis, IMC-05 board. Looking closely at the Y-axis, the IMC-05 has a red reset button, try to press, the fault information is eliminated, and the fault is eliminated. Model: CUT150HSS fault information: 729 (ADC? 11 circuit board +2.5V detection voltage is low) Fault phenomenon: The machine tool can not be discharged. Fault repair: Check the ADC-11 board to find the LM317 adjustable three-terminal regulator block labeled IC21, next to the R*5, 1+2.5V potentiometer. Use a multimeter to measure the output of the LM317 is +2.5V, try to adjust the potentiometer to +2.5V to +2.6V, boot, the fault information is eliminated. It is estimated that the resistance value of the ADC-11 circuit board is increased, resulting in low detection voltage of the machine head and machine alarm. In the above maintenance, it was found that the influence of "water" on the machine tool was considerable. For example, when SPRINT20 is threaded, the water column is diverging, no matter how it is adjusted, it will not help. Finally found that the L20, L25 and other gas valve failure. Remove the air valve, which has been rusted by water, so that the valve cannot be sealed. Another example is that the belt bracket screw of the machine tool is not tightened, so that the water returns to the scissors part, the scissors bearing is rusted, and the cutting wire is broken. Due to the special structure of the brush installation, if the brush is damaged, if it is not replaced in time, the circlip is often directly attached to the commutator, causing the motor to be scrapped (such as the 150HSS machine wire cutting motor is so damaged). Therefore, usually Maintenance work is very important. Model: SPRINT20 fault phenomenon: the display is black, the handle has no display, and the machine has a paste. Fault analysis and overhaul: This situation is generally caused by a faulty power supply. Open the cabinet door, first check the power board, and find that the SUS-32 power board J1 plug 5, 6 feet, the printed line has been burnt, burned, indicating that there is a short circuit fault in the latter stage. Measurements of the G1 weld were found to have broken down at the output. After switching to a new one, the boot works fine. First consider whether the power circuit is working properly. If the front-end power supply is not added, many boards in the latter stage will not work. There are a lot of machine tool self-test information. Open the control cabinet door and find that the SUS25 power board GL6 indicator does not light. +28V voltage has no output. The corresponding fuse has been blown, but it has not been burnt black. It may be that when the wire is threaded, the current suddenly increases to cause a blow. Put on a new one and boot it normally. Model: CUT100D failure phenomenon: The machine will suddenly power off when it is working, and then it will not be powered after it is opened. Fault analysis and overhaul: At first, I thought it was an open fault, so I used three wires to short-circuit the air and force the power. After booting up, the screen displays fault information 382, ​​251, 250, 451, 452, 453, 450, 321, 381, 420, 118. Based on past experience, it is concluded that the fault is in the power circuit. Check the power board and find that the 5 and 6 pins of the J1 socket of the SUS-02 power board are blown. After welding, the G3 measurement output has been broken down. After a new one, the fault information 381 appears. When the machine returns to zero, it is found that only the X, Y and Z axes can be moved twice in the forward direction, while the U and V axes cannot move. , fault information 172 (U, V axis reference point lost). After that, all the keys of the control box are invalid (the keyboard indicator lights are not illuminated). Shutdown and restart, the machine repeats the above phenomenon and then crashes. After the machine control box is interchanged with SPRINT20, the fault remains, and with the process of restarting the machine tool, there are strange phenomena such as automatic water spray and wire wheel rotation. Open the control cabinet door and find that the IMC-02 board GL2 light does not light, and the V-axis IMC-05 board indicator light does not light up (the machine tool communication is faulty). (Finish)
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