Common fault analysis and troubleshooting method of crane electronic scale

rane electronic balance has been widely used in production because of its convenience, practicality and accuracy. But because its use environment is bad, all kinds of. Dumpling barriers still appear, mainly sensor fault, instrument fault, mechanical fault, etc., is now classified to its analysis.

1, the cause of sensor failure and troubleshooting methods cause such failure is due to the aging of the sensor use, signal and power line reverse connection, instrument power supply voltage instability, poor grounding of the sensor shell, etc. It is worth noting that when the strain gauge of the sensor resistance falls off, the sensor resistance measured by the multimeter is normal. At this time, the sensor can be added to the excitation voltage and disconnect the output signal line, by measuring the output signal voltage value is accurate or not, to determine the quality of the sensor processing this kind of fault should be in the exclusion of other fault causes, replace the same type of high-quality sensor.

2. Causes and troubleshooting methods of instrument failure

(1) the instrument display is small and accurate, display confusion, no display, crash and other causes of these failures Ding Bi instrument program chaos or parameter change resulting in the instrument display is not accurate;

(2) the improper grounding of the instrument and the sensor plug damage caused by the display confusion;

(3) The power supply voltage is small and stable, and the instrument is damaged so that the instrument does not show;

(4) power supply signal and other external interference can cause the instrument crash. Handling such faults should be based on different fault phenomena to determine the elimination method. Display is not accurate should be recalibrated, correct parameters; Show /J< disorder should be re-grounded meter and check the plug; No display should check the power supply, repair or replace the instrument; When the machine crashes, restart the instrument after eliminating ten disturbances.

3. Reasons for mechanical faults and troubleshooting methods Loose sensor fixing screws and long holding of mechanical parts will cause uneven force on the sensor. The displayed value is far from the true value to deal with such faults

4. The reason for the failure of the large screen display and the troubleshooting method The connection between the instrument and the large screen display is damaged, and the internal circuit of the large screen display is damaged, which will cause the display chaos or crash of the large screen display. To deal with this kind of fault, repair the wiring, plug and large screen display.