How to Maintain the Mechanical and Electrical Parts of Electronic Belt Scales?

The measurement accuracy and stability of electronic belt scales are closely related to the on-site environment, the standardization of use and maintenance, and the conditions of the belt conveyor. Due to their inherent characteristics, their daily measurement accuracy and stability are easily affected.

To ensure the long-term normal use of electronic belt scales during application, in addition to proper and reasonable installation at the beginning, daily maintenance and troubleshooting are also essential.

Based on Guonuo Technology's rich experience in electronic belt scales, theoretical knowledge, and relevant literature, this article compiles some guidelines to help users use belt scales more scientifically and maintain their application accuracy.

Daily Maintenance of the Mechanical Parts of Electronic Belt Scales

1. Cleaning

   - Keep the belt in the weighing area clean and free from adhered materials to prevent repeated weighing. Check mechanical components such as the scale frame and idlers of the belt scale to ensure they are not clogged with materials or foreign objects.

2. Lubrication

   - Lubricate the weighing idlers of the belt scale once or twice a year. After lubrication, perform zero calibration and adjustment again.

3. Belt Adjustment

   - Under no-load and compliant operating conditions, the belt must be adjusted to align with the centerline of the idlers across the entire range of the belt scale. When off-loading occurs, reshape the load. If the belt does not deviate under no-load conditions but does so under load, ensure that the belt does not deviate within the weighing section during calibration and verification.

4. Belt Tensioning

   - Maintaining constant belt tension is crucial. Therefore, it is recommended to use a gravity-type tensioning device on all conveyors of the belt scale system. Without a constant tensioning device, recalibration is necessary when belt tension changes and the tensioning device requires adjustment.

5. Belt Adhesion

   - Materials may form a thin layer adhered to the belt, continuously sticking to it for a week before falling off. This often occurs when materials are moist or when transporting fine particulate materials. A belt cleaner can be used.

6. Guide Plates and Covers

   - Guide plates should not be installed within +3 or -3 weighing idlers. If guide rails or covers need to be set up within the weighing section, they must not exert any additional force on the scale.

Daily Maintenance of the Electrical Parts of Electronic Belt Scales

Observe the operation of the belt scale frequently to detect potential faults in a timely manner. If issues do arise, follow the troubleshooting steps below:

1. Check Power Supply

   - Verify that the power switch is turned on and that the instrument is receiving power normally.

2. Check Wiring

   - ① Ensure all terminals are securely connected.

   - ② Check that the display board and keyboard interface connections are firm.

   - ③ Verify that remote counters and optional input/output modules are securely plugged in.

   - ④ Inspect the internal wiring between components in the system, ensuring all wiring complies with the on-site wiring diagram.

   - ⑤ Loose connections, short circuits, and improper grounding can cause reading errors and unstable weighing readings.

   - ⑥ Check that all shielded cables are wired according to the on-site wiring diagram.

3. Instrument Cleaning

   - Clean the front panel with a damp, clean cloth. Regularly inspect all wiring, connectors, and circuit board connections for looseness. Ensure the instrument is well-sealed to prevent dust ingress.

Proper maintenance of electronic belt scales plays a crucial role in maintaining their accuracy at the level achieved immediately after debugging. After installing and debugging electronic belt scales for customers, Guonuo Technology's after-sales installation engineers provide training to on-site personnel, covering the use, maintenance, and some fault diagnosis and handling of electronic belt scales.