Common faults and inspection methods of automatic checkweigher
The automatic weighing machine of the checkweigher machine manufacturer is also called automatic weighing scale, classification scale, classification scale, weight recognition machine, weighing detector, belt scale, etc. Shanghai Drying Co., Ltd. is an independent and innovative enterprise integrating Ru0026D, design, production, sales and service. It specializes in the production of automatic inspection and re-sorting equipment, and provides automatic weighing and batching system integration. The company's products cover chemical, food, medicine, food and other industries. Products include: checkweigher equipment, multi-stage sorting scales, metal detectors and a series of products. The following are the common faults and inspection methods of automatic weighing instruments summarized by Shanghai Practical Editor in actual use. I hope it will be helpful to you! (1) Check the weight on the power supply, the touch screen does not display 1. Check whether the power supply is normal and whether the power switch is damaged; 2. Whether the leakage switch in the electric box has tripped? 3. Check whether the switch power supply itself is damaged; 4. Check whether the 24V circuit is short-circuited and whether the fuse is blown; 5. Whether there is a quality problem with the touch screen. (2) All three belts of the conveyor line are not rotating. 1. Check whether the 24V output voltage of the switching power supply is normal; 2. Check whether the communication between the display and PLC is normal (in the “System” of the “Main Menu” of the display). There is an option of 'PLC-IO port' in 'FaultThe display screen and PLC check whether the communication fails). (3) The conveyor belt does not run in a single area. 1. Check that the timing belt is not jammed or damaged; 2. Check whether the conveyor belt is jammed by foreign objects; 3. Check whether the connecting terminal of the motor is loose or falling off; 4. Use the replacement method and check The heavy scale manufacturer recommends driving the motor and the motor to see if there is any driving problem or motor failure. (4) The inspection scale shows that the detected product is unqualified, but the elimination device is not eliminated or the elimination is not in place 1. Elimination is not in place, check whether the output delay and holding time of the elimination system are set correctly; 2. Check whether the air compressor pressure Normal, check the pressure gauge; 3. Check whether the solenoid valve is faulty, test the solenoid valve by hand to see if there is no response; 4. Check whether the cylinder is faulty; 5. Test whether the solid state relay responds normally; 6. Arrange to check the IO of the scale Whether the controller part is burned out. (5) Checkweighing is suddenly incorrect or greatly deviated from the target value. 1. Check whether the parameter settings have been changed artificially; 2. Whether the workshop environment is vibrated or the air flow is large; 3. Whether the feeding interval is the same as before; 4. Whether the weighing platform Clean, whether there is any foreign matter stuck; 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 scale; 7. Whether the sensor is damaged or deformed due to human heavy pressure; 8. .Are the sensor wires and motor wires loose or tight? 9. Whether the position of the photoelectric switch is adjusted correctly (especially the object under test is abnormal). (6) The conveyor belt is skewed and cannot be adjusted. 1. If the belt is worn for a long time and is severely deformed and elongated, please consider replacing the belt; 2. The roller has been used for a long time and is severely worn. Consider replacing it with a new roller.
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