Common faults and inspection methods of six automatic weighing machines

Automatic weighing machines are also known as automatic checkweighers, sorting scales, sorting scales, weight identification machines, weighing inspection machines, belt scales, etc. Zhongshan Kenwei Co., Ltd. is an independent innovative enterprise integrating Ru0026D, design, production, sales and service, specializing in the production of automatic checkweighing and sorting equipment, and the integration of automatic weighing and batching systems. The company's products cover chemical, grain, pharmaceutical, food and other industries. Products include: online checkweighers, multi-level sorting scales, metal detectors and a series of products. The following is a summary of the common faults and inspection methods of automatic weighing machines in actual use by Zhongshan Kenwei Xiaobian, I hope to help you! (1) When the checkweigher is powered on, the touch screen does not display 1. Check whether the power supply is normal and see if the switch of the power supply is damaged; 2. Whether the leakage switch in the electric box has tripped; 3. Check the switching power supply itself Whether there is damage; 4. Check whether the 24V circuit is short-circuited and whether the fuse is burned; 5. Whether the touch screen itself has quality problems. (2) All three belts of the conveying line do not rotate 1. Check whether the 24V voltage output by the switching power supply is normal; 2. Check whether the communication between the display screen and the PLC is normal (in the 'System Fault' of the 'Main Menu' of the display screen) There is a 'PLC-IO port' option, which tests the communication between the display screen and the PLC, and can check whether the communication is faulty). (3) The belt of the conveyor line does not run in a single segment. 1. Check that the synchronous belt is not stuck or damaged; 2. Check that the conveyor belt is not stuck by foreign objects; 3. Check whether the connection terminals of the motor are loose or fall off; 4. Use the replacement method to switch the motor drive and motor to see if it is a drive problem or a motor failure. (4) The checkweigher machine shows that the detected product is unqualified, but the rejection device does not reject or the rejection is not in place 1. The rejection is not in place, check whether the rejection output delay and rejection holding time of the system are set correctly; 2. Check the air compressor Check whether the air pressure is normal, check the pressure gauge; 3. Check whether the solenoid valve is faulty, test the solenoid valve by hand to see if there is any response; 4. Check whether the cylinder is faulty; 5. Test whether the solid state relay response is normal; 6. Check Whether the IO controller part of the weighing weigheris burned out. (5) The checkweigher suddenly appears inaccurate, or deviates greatly from the target value. 1. Check whether the parameter settings have been artificially changed; 2. Whether the vibration of the workshop environment is relatively large or the airflow is large; 3. Whether the distance between incoming materials is the same as before 4. Whether the weighing platform is clean and whether there is any foreign matter; 5. Whether the conveyor belt of the weighing platform is in contact with the other two conveyor belts; 6. Whether the screw protected by the sensor touches the edge of the weighing platform; 7. Whether the sensor has Damaged and deformed by artificial heavy pressure; 8. Whether the sensor wire and motor wire are loose or pulled too tightly; 9. Whether the position of the photoelectric switch is adjusted accurately (especially when the measured object is a special-shaped part). (6) The conveyor belt is deviated and cannot be adjusted. 1. The belt has been used for too long, and the wear and tear is severely deformed and elongated. Consider replacing the belt; 2. The roller has been used for a long time and is seriously worn. Consider replacing the new roller. Zhongshan Kenwei is a professional manufacturer of weighing machines, if you have any questions, please feel free to contact us!

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