OM6004 Optional Equipment - Section 6 Haulpak Payload Meter Page 6-3 DECK MOUNTED LIGHTS The Payload Meter controls three relays that are located near the payload meter. The relays operate six deck mounted lights, three on each side of the truck. On each side of the truck there is one green light, one amber light and one red light. The lights come on according to the following schedule: The shovel or loader operator can predict the payload weight by observing these lights. During the loading operation a forecast function flashes a deck mounted light predicting the payload weight after the next bucket of material is dropped into the body. The logic is as follows: 1.
If the measured payload is varying 3% or less of the rated load for more than 0.5 second, the current load is deemed a steady value. 2. If the difference between the previous steady value and the current steady value is greater than 15% of rated load or greater than 10 tons, the difference is taken to be the size of the current bucket. 3. The average size of previous buckets is added to the current load. The deck mounted light that will come on if another "average" bucket is dropped in the body will blink at one second intervals. DATA STORAGE LOGIC Load data is stored in the battery-backed memory when the wheel brake lock is turned "off", if: 1.
The previous payload has been reduced to a level lower than 20% of rated payload and 2. The current payload is greater than 50% of rated payload. Note: This logic prevents the payload meter from recording the current payload weight more than once if the wheel brake lock is used while the truck is loaded. The payload meter has the capacity to store data for two hundred haul cycles. DECK MOUNTED LIGHTS PAYLOAD WEIGHT GREEN OFF OFF 50% and Greater GREEN AMBER OFF 90% and Greater GREEN AMBER RED 105% and Greater