26. HANDLING PAYLOAD METER Example: HD605-5 1st bucket: 12 tons 2nd bucket: 11 tons (23 tons) 3rd bucket: 12 tons (35 tons) 4th bucket: 12 tons (47 tons) 5th bucket: 13 tons (60 tons) If the load changes as above, the external display lamps will give the display in the table below. 5-4 No. of loads External display lamp Remarks 1st bucket ‡ The weight actually loaded is 12 tons, so no lamp lights up. ‡ The predicted load is 24 tons (12 tons x 2), so the first green lamp flashes 2nd bucket ‡ The weight actually loaded is 23 tons (12 tons + 11 tons), so the first green lamps light up. ‡ The predicted load is 34.5 tons (23 tons + 23/2 tons), so 2nd lamp flashes.
3rd bucket ‡ The weight actually loaded is 35 tons (23 tons + 12 tons), so two green lamps light up. ‡ The predicted load is 46.6 tons (35 tons + 35/3 tons), so no lamp flashes. 4th bucket ‡ The weight actually loaded is 47 tons (35 tons + 12 tons), so two green lamps stay lighted up. ‡ The predicted load is 58.8 tons (47 tons + 47/4 tons), so the 3rd lamp flashes. 5th bucket ‡ The weight actually loaded is 60 tons (47 tons + 13 tons), so three green lamps light up. ‡ The predicted load is 72 tons (60 tons + 60/5 tons), so the red lamp flashes.