Recently, Xinling Industry received a call from a customer. The customer said anxiously on the other end of the phone that the ASM placement machine in their factory stopped after a sudden "bong" sound, and asked our maintenance personnel to go over and see what happened. manage.
After our maintenance personnel heard it, their hearts almost jumped into their throats, and they quickly took the toolbox and rushed to the scene immediately.
When we arrived at the scene, the maintenance master asked, it turned out that the recent rainy weather caused the CAP of the SMT placement machine to short-circuit, and a "bong" sound was made, which scared everyone to stop their work. After listening, the maintenance master sighed, but he still couldn't put his heart down.
In order to avoid similar accidents from happening again, the editor will analyze the causes of ASM mounter CAP failures and daily precautions for you today.
What is STM pick and place machine CAP?
ASM placement machine CAP: The full name is capacitor, that is, capacitor. It is used to store energy to increase the load capacity of the power supply, which is the guarantee for the high acceleration of the X/Y linear motor of the ASM placement machine.
Composition of ASM pick and place machine CAP: 300V capacitor + 150V capacitor + control board
ASM mounter CAP common fault causes:
1. A short circuit caused by too high temperature and humidity in the workshop of the ASM placement machine factory.
2. The load caused by the cantilever hitting the head is too large.
3. The components are aging.
There are three major reasons for the failure of the ASM placement machine CAP. The CAP failure of the ASM placement machine this time was due to the increase in humidity in the workshop in rainy days, which caused a short circuit in the CAP of the ASM placement machine. Fortunately, there were no personnel safety accidents, but the economic losses caused by this accident should not be underestimated. Finally, we helped the customer replace the CAP of the ASM placement machine, and organized the factory operators to conduct technical training on the ASM placement machine to avoid the same accident from happening again.
ASM placement machine CAP fault maintenance ideas:
The cause of the failure of the ASM placement machine CAP can be judged by two phenomena:
1. There is a status light on the CAP of the ASM placement machine. If the status light flashes, it proves that the voltage output is unstable and the CAP is faulty.
2. Judging by the alarm information on the software, when the alarm information "cantilever power supply is missing" appears, it can be judged that the CAP is faulty.
Daily precautions for sm placement machine CAP:
The CAP of the ASM placement machine has a relatively large voltage, so if you do not pay attention to daily maintenance and maintenance, it is prone to failure. The failure of the CAP of the ASM placement machine may not cause the equipment to stop directly, but due to the long maintenance time and the lack of spare parts, the failure cannot be resolved in time, which will affect the production efficiency, and there are risks of downtime and personnel safety accidents.
Therefore, you should pay attention to:
(1) The ASM placement machine factory workshop should maintain the relevant temperature and humidity.
(2) The shell of the CAP of the ASM placement machine should be clean, not deformed, and free of oil leakage, and the CAP of the ASM placement machine should not be full of dust and other dirty things.
(3) After the ASM placement machine CAP has been in operation for a period of time, it is necessary to conduct a withstand voltage test, and the test should be carried out according to the specified value.
(4) The maintenance of the CAP of the ASM placement machine should not be less than once a month. The tg of the CAP of the ASM placement machine should be measured 2 to 3 times within one year. The purpose is to check the reliability of the capacitor. Each measurement should be carried out under the rated voltage or close to the rated value.
(5) If the circuit breaker of the CAP trips due to the action of the CSB, it must not be closed again until the cause of the trip is found out.
