PLATE A 6V4191 - Caterpillar

The Maximum Payload Speed Manager will activate the overload events when:
The payload weight exceeds the set limit regardless of the truck locationThe machine speed limiting is activated when: .
The payload weight exceeds the set limit regardless of the truck location This behavior will remain active until the payload is dumped and the weight of the payload is cleared. The machine speed limiting and the VIMS messages cease automatically after the payload has been dumped and the machine is returned to normal operation.The weight of the payload is calculated as the truck is shifted into second gear (second gear weighing). The new payload weight that is determined during the second gear weighing, is used to determine if machine speed limiting is necessary.Once the Maximum Payload Speed Manager has determined that the truck is overload, the following actions are initiated:
The shift range of the transmission is limited to second gear
High idle of the engine is limited to 1750 rpm
The point for automatic retarding is reduced to 1750 rpm The settings that are listed above are not adjustable. Example of the Operation of the Maximum Payload Speed Manager
The site project manager decided that a 793C will normally haul 240 tons with a never exceed limit of 288 tons. To achieve these objectives, the project manager would set the parameters of Maximum Payload Speed Manager to the values that are:Target Payload Setting - 240 tonsPayload Overload Limit Setting - 120% (288/240=120%)With these settings the Maximum Payload Speed Manager will function in the following manner:
The payload loading lamps will load to 240 tons
The overload warnings will occur above 264 tons
The engine speed will be limited to 1750 rpm in second gear above 288 tons
The external payload display will show the current payload weight
Illustration 1 g00739639
Maximum Payload Speed Manager setup for a 793C Off-Highway Truck
Setup of the Maximum Payload Speed Manager
The Maximum Payload Speed Manager requires the user to enter information into the system. This information is used to define the system behaviors that are listed below:
Overload speed limiting
Overload events
Overload warningsTarget payload
The "target payload setting" is used during payload operations in order to control the operation of the external payload lamps. The "target payload setting" is adjustable from zero to the target weight of the truck that is being set up. The target weight is the maximum weight of payload that is determined from the GMW of the machine. The "target payload setting" is stored