CAP-RADIATOR 3412143 - Caterpillar

Operation of the Maximum Payload Speed Manager
Illustration 1 g01960625
10/10/20 Overload Policy
The Caterpillar 10/10/20 Overload Policy states: “No more than 10% of the payloads may exceed 110% of the target payload of the truck and no single payload shall exceed 120% of the target payload of the truck”. The Maximum Payload Speed Manager compares the actual payload weight on the truck to an overload limit for the truck model. If, the weight of the payload is greater than 120% of the target payload the speed of the truck is reduced. Maximum Payload Speed Manager Actions
Table 1
Overload Conditions and Maximum Payload Speed Manager Actions(1)
Condition Action
When the weight measured by the payload control system is greater than the overload limit. High idle of the engine is limited to 1350 rpm.
The machine will be speed limited to 10 mph, by limiting torque to the drive motors.
The point for automatic retarding is reduced to 1350 rpm.
(1) The settings for limited performance are not adjustable.The speed of the truck:
Is limited when the weight of the payload exceeds the overload limit regardless of the location of the truck
Is limited until the payload is dumped and the weight of the payload is cleared
Will return to normal at the beginning of the next payload cycleExample of the Operation of the Maximum Payload Speed Manager
The Project Manager for a mine has determined that a 20% overload is the correct limit to activate the maximum payload speed manager. The OHT has a target payload of 345 tons. The Project Manager would set the parameters of Maximum Payload Speed Manager to the values that are listed below:Target Payload Setting - 345 tonsPayload Overload Limit Setting - 120%With these settings, the Maximum Payload Speed Manager will function in the manner that is listed below:
The payload loading lamps will display a signal to load through 345 tons.
The overload warnings will occur above 380 tons.
The engine speed will be limited above 414 tons.Configuring the Maximum Payload Speed Manager
The Maximum Payload Speed Manager requires the user to input weight information for the payload that is specific to the model of the truck. This information is used to trigger the events that are listed below:
Overload speed limiting
Overload events
Overload warningsTarget Payload
The "target payload" is the correct payload weight for the truck model. The target setting for the weight of the payload determines the correct operation for the payload monitoring systems of the truck. The setting for the "target payload" is adjustable from zero to the target weight of the truck. The target weight is 100% of the weight of payload that is calculated from the Gross Vehicle Weight of the truck. The setting for the "target payload" is recorded in the onboard memory of the VIMS Application ECM. The "target payload setting" can be input via the Advisor or Caterpillar ET. Setting the Payload "Overload Limit"
The overload limit is the percentage of overload that is accepted before the Advisor will display a warning message to the operator. The Maximum Payload Speed Manager will also limit the speed of