26. HANDLING PAYLOAD METER 26.2.1 PREDICTION DISPLAY The weight of the load changes in stages as each bucket is emptied into the dump body. The average weight of the load up to that point is calculated to predict what the weight of the load will be if one more bucket is loaded. The appropriate lamp flashes, so it is possible to adjust the weight of the next load when operating the loader. The prediction display for the load level and the actual load display are shown at the same time. Example: HD465-5 1st bucket: 10 tons 2nd bucket: 12 tons (22 tons) 3rd bucket: 12 tons (34 tons) 4th bucket:
11 tons (45 tons) If the load changes as above, the external display lamps will give the display in the table below. 5-3 No. of loads External display lamp Remarks 1st bucket ‡ The weight actually loaded is 10 tons, so no lamp lights up. ‡ The predicted load is 20 tons (10 tons x 2), so the first green lamp flashes 2nd bucket ‡ The weight actually loaded is 22 tons (10 tons + 12 tons), so two green lamps light up. ‡ The predicted load is 33 tons (22 tons + 22/2 tons), so no lamp flashes. 3rd bucket ‡ The weight actually loaded is 34 tons (22 tons + 12 tons), so two green lamps stay lighted up. ‡ The predicted load is 45.3 tons (34 tons + 34/3 tons), so the 3rd lamp flashes.
4th bucket ‡ The weight actually loaded is 45 tons (34 tons + 11 tons), so three green lamps light up. ‡ The predicted load is 56.3 tons (45 tons + 45/4 tons), so the red lamp flashes.