308B, 311B, 312B, 315B, 317B, 318B, 320B, 322B, 325B, 330B, M325B and W330B Excavators Engine and Pump Control Operator Monitor Caterpillar


Operator Monitor
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1.1. Operator Monitor Panel

Operator Monitor Panel

The monitor panel has two functions:

  • Displaying information with gauges and indicators

  • Allowing the operator and/or service person to input information to the controller

The monitor panel is used to enter commands into the controller. Some examples of these operations are included: selecting operator modes, selecting service modes, changing parameters and many other operations.

The monitor has three gauges and a number of alert indicators. Each gauge is dedicated to a parameter within a machine system. Some of the possible parameters of the machine systems are listed: hydraulic oil temperature, engine coolant temperature and fuel level. The gauges receive information from sensors or senders that are connected to the controller. The controller uses the information from each sensor input to calculate the value that is shown on the gauges. The pictograph symbol (27) will identify the parameter of the machine system that is shown on each gauge. The alert indicators (6-18) will notify the operator of an abnormal condition in a machine system. The controller uses the information from the switches to determine when an abnormal condition is present. The controller will send a message to the monitor panel and the monitor panel. Then, the monitor panel FLASHES the alert indicator for the machine system with the abnormal condition. The controller will process information from the switches of the monitor panel. The switches are used in order to select various functions. The controller will receive this information and the controller will perform the requested operation or mode of operation.

Note: The Alert indicator (12) will illuminate for active diagnostic codes that occur in the engine and pump controller and the engine ECM.




Illustration 1g00904377

Monitor Panel

(1) Action lamp

(2) Character display

(3) Fuel gauge

(4) Hydraulic oil temperature gauge

(5) Engine coolant temperature gauge

(6) Charge alert indicator

(7) Alert indicator for the engine oil pressure

(8) Alert indicator for the hydraulic oil temperature

(9) Alert indicator for the engine coolant temperature

(10) Clogged air filter indicator

(11) Indicator for a hydraulic return filter that is clogged

(12) Alert indicator

(13) Monitor alert indicator

(14) Air heater indicator

(15) Fuel level alert

(16) Hydraulic oil level alert

(17) Engine oil level alert

(18) Alert indicator for the engine coolant level

(19) Power mode switch

(20) AEC switch

(21) Travel speed control switch

(22) Travel alarm cancel switch

(23) Boom priority mode switch

(24) Swing priority mode switch

(25) Fine control mode switch

(26) User mode switch

(27) Pictograph symbol




Illustration 2g00666430

Schematic Of The Monitor Panel

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