Analysis of common faults in low speed centrifuge
1. After the power is turned on, the control panel displays normally, and the cooling fan works normally. When the start button is pressed, the intermediate relay works and the centrifuge does not work. According to the analysis of the fault phenomenon, the power supply part and the control part should be normal, and the fault should be at the line from the control board to the motor, the carbon brush and the motor. Turn on the centrifuge, use a multimeter to measure the conduction of the control panel to the carbon brush, and then measure the carbon brush to the motor rotor. Do not conduct the carbon brush and the rotor of the motor carefully. Remove the carbon brush and find that it is too long. Too short. Replace the new carbon brush and troubleshoot. This kind of failure is a common failure of the centrifuge, and the carbon brush should be replaced regularly to avoid the above failure.
2. After the power is turned on, the control panel displays normally, and the cooling fan works normally. When the start button is pressed, the intermediate relay does not work and the centrifuge does not work. According to the analysis of the fault phenomenon, the power supply part should be normal, and the fault should be at the control board and the circuit to the motor, the carbon brush and the motor. Turn on the centrifuge, measure the control panel to the carbon brush with a multimeter, and measure the carbon brush to the motor rotor. The motor coil is normal. After starting up, use a multimeter to measure the no-voltage output of the control board to the motor. It can be judged that the fault should be on the control board, and the intermediate relay does not work. The fault should be eliminated on the control circuit of the control intermediate relay, and the control board is found C9013. Transistor breakdown, worse new C9013 triode, troubleshooting.
3. After the power is turned on, the control panel displays normal. When the start button is pressed, the centrifuge works normally. However, when the stop switch is pressed, the centrifuge does not reflect and cannot stop working. According to the analysis of the fault phenomenon, the fault should be in the stop control part of the control circuit section, which includes the stop switch, the power control board and the timer control board. Turn on the centrifuge and use the multimeter to detect the stop switch. Normally; after the power is turned on, measure the output of the power control board to the timer control board. The signal is AC 16V. The fault should be on the timer control board. The timer control board can be stopped. task. Excluded one by one, found that the C9013 triode on the timer control board and the model is 16V, 470μF capacitor breakdown, worse new triode and capacitor, troubleshooting.
4. After the power is turned on, the control panel displays normal. When the start button is pressed, the centrifuge works normally. However, when the stop switch is pressed, the centrifuge cannot stop working immediately, but rotates for a long time before slowly stopping. According to the analysis of the fault phenomenon, the fault should be in the stop brake control part of the control circuit section. The brake control part includes the model: WJ176-12V intermediate relay, brake resistor R: 20-30Ω, model: KBPC50A10M silicon stack and wire . Turn on the centrifuge, use a multimeter to measure the brake resistance, the intermediate relay and the wires are normal. After starting the machine, press the stop button and measure the 4 corners of the silicon stack with a multimeter. There is an AC 12V input, no DC 12V output, and the silicon stack is judged to be damaged. New, troubleshooting.
ZXK50A.ZXK80 CNC Drilling And Milling Machine Center
ZXK50A, ZXK80A are
widely used in military, automobile, railway, bridge, rock drilling, locomotive, oil and other
industries, focusing on processing large torque, heavy cutting and other parts
1.The series products are patented technology new products of R&D manufacturing . on the basis of general CNC Drilling Machine , realizes the function of automatic tool changing and spindle two level automatic shift . it also can be realized automatically processing of large torque, heavy cutting, high efficiency . it also is preferred replacement products of drilling parts processing .
2. function characteristica of matchine
1)Well constructed with special casting ,with high-rigid structure . useing of Vertical Machining Center lathe bed and a sliding seat , so it has high rigidity structure.
2)The guide rail and the work table are quenching and grinding, plastic pate matched with the guide rail lubrication, automatic Intermittent lubrication , feeding smoothly without crawling, keeping good accuracy.
3)Machine tool with three axes are the ball screw drive, connection mode for motor and screw is direct connection.
4)Can be equipped with Guangzhou CNC system .model GSK980MDa, support milling, boring, drilling cycle processing.
5)7 " widescreen color LCD ,operation is more easy
6)Spindle box full gear transmission shift, enhances the rigidity of the machine tool, strong cutting, tapping capacity: M30.
7)The machine can be configured 12 no mechanical hand disc knife library, you can also configure the 16 gear cam manipulator for knife library, can realize of the ATC function in automatic processing.
8)Three axis drive device are DA98 series digital servo by Guangzhou CNC Company produced.
Spindle servo is DAY3 series digital spindle servo by Guangzhou CNC Company produced
9)Automatic processing, one person can operate more machines, saveing manual labor.
10)Big torque ,high efficiency,high rigidity
11)Max Spindle torque 350NM
12)ZXK80 Max spindle torque 450NM,Big torque high righdity heavy cutting
II;
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Drilling And Milling Machine Center,CNC Drilling Milling Machine,Mini Milling Machine,Vertical Milling Machine
NingXia DaHe Machine Tool (Group) Imp And Exp Co.,Ltd , https://www.nxdhjcmachine.com