For more detailed information on the monitoring system, refer to Systems Operation, KENR9022, "793F and 797F Off-Highway Truck Monitoring System", Systems Operation, Troubleshooting, Testing and Adjusting, KENR9023, "793F and 797F Off-Highway Truck VIMS", and Systems Operation, Troubleshooting, Testing and Adjusting, UENR2225, "793F and 797F CMD Off-Highway Truck VIMS 3G and Payload (If Equipped)".
VIMS only monitors the payload sensors. This system supports a distributed monitoring system. Electronic Control Modules (ECM) monitor the machine components. Each ECM generates diagnostics and events. Each machine ECM then reports the diagnostics and events to the Advisor to notify the operator. Each machine ECM reports the diagnostics and events to VIMS for logging.
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| Illustration 1 | g02792328 |
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(1) Throttle lock
(2) Primary steering system (3) Engine Fault (4) Brake system fault (5) Transmission fault (6) Action light (7) Tachometer (8) Charging System (9) Body up (10) Lockout mode (11) High beam (12) Retarder (13) Traction Control System (TCS) (14) Fasten Seat Belt (15) Left turn signal (16) Brake oil temperature (17) Coolant temperature (18) Parking brake (19) LCD display (20) Transmission reverse (21) Torque converter oil temperature (22) Fuel level (23) Right turn signal | |
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Throttle Lock (1) - This indicator is illuminated when the throttle lock is activated. |
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Primary Steering System (2) - When this indicator is illuminated, the primary steering system pressure is low. Stop the machine immediately. Stop the engine and investigate the cause. Do not operate the machine until the primary steering system pressure is normal. |
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Engine Fault (3) - When this indicator is illuminated, there is a general fault in the engine. |
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Brake System Fault (4) - When this indicator is illuminated, there is a general fault in the brake system. |
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Transmission Fault (5) - When this indicator is illuminated, there is a general fault in the transmission system. |
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Action Light (6) - When this indicator is illuminated, there is a malfunction in a machine system. This indicator is used along with the system indicators to convey the severity of the situation. Refer to "Warning Categories" for more information about the severity of various warnings. |
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Tachometer (7) - The tachometer will indicate the engine RPM. This also indicates engine overspeed. Engine overspeed is represented by the yellow zone and the red zone. |
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Charging System (8) - When this indicator is illuminated, there is a fault in the charging system. |
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Body Up (9) - When this indicator is illuminated, the truck body is in the raised position. |
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Lockout Mode (10) - This indicator will be illuminated when the engine lockout has been activated. The indicator will also be illuminated when the machine lockout is activated. Refer to the following topics for more information: |
- Operation and Maintenance Manual, "Engine Lockout Control"
- Operation and Maintenance Manual, "Machine Lockout Control"
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High Beam (11) - When this indicator is illuminated, the high beam headlights are on. |
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Retarder (12) - This indicator will illuminate when the Automatic Retarder Control (ARC) is engaged or when the manual retarder control is engaged. Refer to Operation and Maintenance Manual, "Retarding". |
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Traction Control System (13) - This indicator is illuminated when the Traction Control System (TCS) applies the rear brakes of a wheel that is losing traction. |
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Fasten Seat Belt (14) - This indicator is illuminated when the operator seat belt is not fastened. The fasten seat belt indicator lamp is illuminated on the gauge panel whenever the engine start switch is ON and the seat belt not fastened. If the parking brake is released before fastening the seat belt, an audible pulsing alarm is activated. The audible alarm will sound in a pattern of 10 seconds on, 50 seconds off for a maximum of 5 minutes if the seat belt remains unfastened. |
Note: An electrical connection is provided for field install of an external lamp to illuminate if the seat belt is not fastened and the parking brake disengaged.
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Left Turn Signal (15) - This indicator illuminates when the left turn signal light is operating. |
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Brake Oil Temperature (16) - When the brake oil temperature is above the normal operating value, the brake oil temperature gauge will be in the red zone. |
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Coolant Temperature (17) - When the coolant temperature is above the normal operating value, the coolant temperature gauge will be in the red zone. |
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Parking Brake (18) - When this indicator is illuminated, the parking brake is engaged. |
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LCD Display (19) - This display is used to display the following information: service hour meter, machine ground speed, actual gear, and direction. |
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Transmission Reverse (20) - The transmission control is in the R position. This also indicates the possibility that the transmission will shift into reverse when forward ground speed drops. |
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Torque Converter Oil Temperature (21) - When the oil for the torque converter is above normal operating temperature, the torque converter oil temperature gauge will be in the red zone. |
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Fuel Level (22) - When the level of fuel in the fuel tank is low, the fuel level gauge will be in the red zone. |
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Right Turn Signal (23) - This indicator illuminates when the right turn signal light is operating. |
VIMS is designed to alert the operator of an immediate problem or of an impending problem in one or more of the machine systems. The abnormal conditions are called events. Data from the sensors on the machine is stored by VIMS.
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| Illustration 2 | g01349141 |
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The service light is on the lower right front side of the machine on the bumper. | |
A service light with a blue lens is visible from ground level. This service light will alert the service person or maintenance personnel that an event is present now and that diagnostic information is available. There are two types of events that are recognized and stored. These events are Data Events and Maintenance Events. The service light flashes one time if no events are present. The service light flashes three times if any events are logged.
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If the action alarm does not sound during this test or machine monitoring displays are not functioning, do not operate the machine until the cause has been corrected. Machine operation with faulty action alarms or displays could result in injury or death as any Warning Category 3 notifications will not be relayed to the operator. |
To ensure the proper operation of the monitoring system, check the system daily.
The battery disconnect switch must be in the ON position.
When you turn the engine start switch key from the OFF position to the ON position, the monitoring system will perform an automatic self-diagnostic test.
The self-diagnostic test verifies that the outputs (gauges, indicators, and alarms) are operating correctly.
When you turn the engine start switch key to the ON position, the following systems are tested for approximately one second: indicators,gauges,and LCD displays.
The gauges must go to the far right positions. All indicators must illuminate momentarily. All segments of the LCD displays must come on momentarily. The action alarm must sound.
The Monitoring System provides three warning categories.
In this category, all the following conditions will occur:
- An indicator will illuminate or a gauge will be in the red zone. The indicator that illuminates or the gauge that is in the red zone identifies the machine system that needs attention.
Warning category 1 requires operator awareness. Minor reductions in machine performance may occur.
In this category, all the following conditions will occur:
- An indicator will illuminate or a gauge will indicate in the red zone.
- The action light will flash.
- A popup screen appears on the Advisor display screen. Warning information appears on the display screen.
Note: Press the "OK" button to acknowledge any warning messages. This will snooze the action light and the message on the display screen.
Warning category 2 requires maintenance or a change in machine operation. Damage to components can occur.
In this category, all the following conditions will occur:
- An indicator will illuminate or a gauge will indicate in the red zone.
- The action light will flash.
- A steady action alarm will sound.
- A popup screen appears on the Advisor display screen. Warning information appears on the display screen.
Note: Press the "OK" button to acknowledge any warning messages. This will snooze the action light and the message on the display screen.
Warning category 2S requires maintenance or a change in machine operation. Severe damage to components can occur.
In this category, all the following conditions will occur:
- An indicator will illuminate or a gauge will indicate in the red zone.
- The action light will flash.
- A sound from the action alarm will pulsate.
- A popup screen appears on the Advisor display screen. Warning information appears on the display screen.
Note: "Snooze" is not available for a warning category 3.
Warning category 3 requires the operator to immediately perform a safe machine shutdown. Injury to the operator or severe damage to components can occur.
VIMS has the ability to stop the engine when any one or more of the following engine shutdown events exist:
- Low engine oil level
- Low engine oil pressure
- Low engine coolant level
- High engine coolant temperature
All the following conditions must also be met before an engine shutdown event will cause VIMS to shutdown the engine:
- The ground speed must be zero.
- The transmission control must be in the P position.
The following events will warn the operator before VIMS will shutdown the engine:
- A warning category 3 will occur when the engine oil level is low and the engine is running. Advisor will inform the operator of low engine oil level. Advisor will also instruct the operator to add oil immediately.
- A warning category 3 will occur when the engine oil pressure is low and the engine is running. Advisor will inform the operator of low engine oil pressure. Advisor will also instruct the operator to stop the engine immediately.
- A warning category 3 will occur when the engine coolant level is low and the engine is running. Advisor will inform the operator of a low engine coolant level. Advisor will also instruct the operator to add coolant.
- A warning category 3 will occur when the engine coolant temperature is high and the engine is running. Advisor will inform the operator of high engine coolant temperature. Advisor will also instruct the operator to reduce the load on the engine.
If the engine is stopped, and one or more engine shutdown events is active, VIMS will allow the engine to be started.
If one or more engine shutdown events occurs during machine operation, VIMS will not stop the engine. Advisor will alert the operator of the abnormal machine condition.
VIMS will then command the Engine ECM to shutdown the engine when the following conditions are met:
- The ground speed is at zero.
- The transmission control is in the P position.
If the engine is shut down because of an engine shutdown event, the event list in VIMS will show the event that caused the shutdown.
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| Illustration 3 | g01467607 |
OK button (24) - After you have made selections with the scroll down/right button (27) and with the scroll up/left button (28), use this button to confirm those selections.
Main menu (25) - Use this button to return to the main menu.
Previous button (26) - Use this button to return to information that was previously shown on digital display area (35).
Scroll down/right button (27) - This button is used to scroll down through information that is shown on the display area. The button can also be used to scroll to the right through information that is shown on the display area.
Scroll up/left button (28) - This button is used to scroll up through information that is shown on the display area. The button can also be used to scroll to the left through information that is shown on the display area.
Preset buttons (29) - The Advisor system allows you to program the locations of five menu items. To store a menu item into the memory, go to the desired screen display in the menu by using the navigation buttons. Assign a preset button by depressing the preset button for approximately 3 seconds until all preset buttons illuminate. If the preset buttons illuminate red, the preset is unable to be stored. If the preset buttons illuminate green, the preset button is now assigned to the corresponding screen display in the menu. The preset button can be used to access the corresponding screen display from any location in the menu. If the profile is set to "Factory Set", any programmed preset buttons will revert to the default setting when the keyswitch is turned OFF. To save the preset programming, a profile must be selected or created. Refer to ""Create Profile"" in the ""Operator" Menu" information.
Digital display area (30) - The Advisor system shows information on this digital display area.
The structure of the Advisor menu is arranged in a layered list. When the operator or a technician selects an option from a menu, the next screen is one level below the previous screen. More selections may be available from the resulting screen. There may also be more than one page of information or options that can be displayed from a level. Only four options can be displayed at one time. This is indicated by the "More Options" icon. This icon is on the left side of the screen.
The main menu can be displayed at any time by pressing the "Home" button.
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| Illustration 4 | g01921904 |
Actual gear (31) - This will display the actual gear position and direction of the transmission. The display will show one of the following:
- "N" for the PARKING BRAKE APPLIED (P) position and the NEUTRAL position
- "1F" through "6F" for the FORWARD positions on the 793F
- "1F" through "7F" for the FORWARD positions on the 797F
- "1R" for the REVERSE position
Note: When the transmission control is in the P position, the transmission is in NEUTRAL and the parking brake is applied.
Transmission control position (32) - If the transmission control is in any of the following positions, the gear that is highlighted indicates the position of the transmission control: P, R, N, 2 and 1. If the transmission control is in D, the gear that is highlighted indicates the gear that has been selected as the top drive gear.
Top drive gear (33) - The single gear that is shown in the small outline is the top drive gear that has been selected with the transmission control. Any gear between 3 and 6 is able to be selected on the 793F. Any gear between 3 and 7 is able to be selected on the 797F.
Note: Refer to the "Transmission Control" section of Operation and Maintenance Manual, "Operator Controls" for more information about selecting the drive gear.
Date/Time Clock (34) - This screen will display the time and the date.
More Options (35) - This icon shows the direction to scroll for more options.
Menu Items (36) - This screen will display the menu options that are available.
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| Illustration 5 | g01923754 |
Status of the ARC (37) - This screen will display "Off" (37A) when the ARC switch is turned off. This screen will display "On" (37B) when the ARC switch is turned on and the speed setting for the ARC is not set. When the ARC switch is on and the speed setting for the ARC is set, this screen will display the set speed (37C) that will activate the ARC.
The profile of an operator is a saved set of preferences that is identified by a name. Once the profile is created, the operator may associate various settings to that profile. When the preferences are adjusted, the preferences may be saved.
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| Illustration 6 | g01923773 |
The profile of the operator is accessed from the "Home" menu. Press the up arrow button or the down arrow button until "Operator" is highlighted. Then press the "OK" button.
The following selections are available through the "Operator" menu:
From the "Operator" menu, use the appropriate arrow button to highlight the "Operator ID" option. Then press the "OK" button to display the "Operator ID" screen.
From the "Operator" menu, use the appropriate arrow button to highlight the "Select Profile" option. Then press the "OK" button to display a list of existing profiles. Use the appropriate arrow button to highlight the desired profile. Then press the "OK" button to select that profile.
Note: A maximum of 10 profiles may be used.
Note: A "None" profile will be automatically created when the last remaining profile is deleted and no profile exists. The programmed preferences are automatically saved when the keyswitch is turned OFF. "Factory Set" is not a profile.
From the "Operator" menu, use the appropriate arrow button to highlight the "Edit/Save Current" option. Then press the "OK" button to view the settings that are associated with the current profile.
This procedure will cause the current settings of the selected profile to be displayed on the screen. The settings that are displayed are the current settings.
The operator may exit this display without saving by pressing the back button. The operator may save the settings by selecting "Save" and pressing the "OK" button.
From the "Operator" menu, use the appropriate arrow button to highlight the "Create Profile" option. Then press the "OK" button to display the "Create Profile" screen. Follow the screens to create a new name. The screen will give directions to save the name to the list of profiles. This procedure creates a profile.
Note: After a profile is created the selections in the "Settings" submenu can be saved to a specific profile.
Note: A maximum of 10 profiles may be used.
From the "Operator" menu, use the appropriate arrow button to highlight the "Delete Profile" option. Then press the "OK" button to display a list of existing profiles. Use the appropriate arrow button to highlight the profile for deleting. Then press the "OK" button to delete that profile. This procedure deletes the selected profile from the list of stored profiles.
From the "Operator" menu, use the appropriate arrow button to highlight the "Factory Set" option. Then press the "OK" button to make the default settings active.
This procedure recalls the default settings. The default settings are then the active settings and the Advisor display and the instrument cluster will reflect the default settings. Once the default settings have been activated, the settings may be viewed without saving using the "Edit/Save Current" option.
The default settings will not be saved with the current profile unless the operator saves the default settings to a profile by using the "Edit/Save Current" option.
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| Illustration 7 | g01923774 |
The "Monitor" menu option is accessed from the "Home" menu. Press the up button or the down button until the "Monitor" is highlighted. Then press the "OK" button.
The "Monitor" menu option allows the user to view the machine parameters that are being monitored. Four parameters are displayed on the screen at one time. Use the navigation buttons to scroll through the parameters. Press the "OK" button to attain a list of available parameters.
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| Illustration 8 | g01923775 |
The "Payload" menu option is accessed from the "Home" menu. Press the up button or the down button until the "Payload" is highlighted. Then press the "OK" button.
The following information will be displayed in the "Payload" menu:
"Payload State" - The state of the payload (load cycle status) will be one of the following:
- "Loading": The module senses the beginning of the load cycle.
- "Last Pass": One additional pass from the loading machine will fill the dump body to maximum capacity.
- "Loaded": The dump body is fully loaded.
"Payload" - Calculated weight for the payload
"Target" - Target payload weight
See Systems Operation, RENR8284, "General Information" for more information about the payload.
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| Illustration 9 | g01923776 |
The "Service" menu option is accessed from the "Home" menu. Press the up arrow button or the down arrow button until "Service" is highlighted. Then press the "OK" button.
The selections that are available in the "Service" menu can be password protected with the "Service Mode" password to limit access to programmable parameters. The programmed parameters in the password protected menu options are available for viewing only. Cat ET must be used to set the password.
The following selections are available through the "Service" menu:
The following selections are available through the "Diagnostics" submenu:
"Active Events"
The following selections are available through the "Active Events" submenu:
- "Electronic Control Module"
- "Event Code"
- "Date of occurrence"
- "Time of occurrence"
- "Warning Level"
- "Number of occurrences"
"Logged Events"
The "Logged Events" menu option shows the list of events and diagnostic codes that have been recorded. Press the "OK" button to view the information of the event or code. Use the left arrow button or the right arrow button to move to the next logged event or the next code.
"Trigger Snapshot"
The "Trigger Snapshot" menu option allows the user to manually initiate a snapshot of the system. This snapshot will be in addition to the snapshots that are already programmed. The snapshot will remain active until the time has elapsed.
"Data Logger"
The status of the data logger is shown in the right portion of the screen on the Advisor.
The remaining storage time of the data logger is shown on the message area when the user highlights the "Data Logger Reset" menu item on the Advisor display. The format of the time is shown in "minutes:seconds".
- "Data Logger Start". The "Data Logger Start" menu option allows the user to initiate the data logger. If the information for the data logger is being downloaded from the machine, the data logger cannot be started. The operator can initiate the data logger. Then, the operator can stop the data logger. This action can be performed numerous times until the total time for logging the data is 30 minutes. The menu item "Data Logger Stop" will change back to "Data Logger Start" when the data logger is no longer recording data. The menu items do not change when the service tool starts the data logger.
- "Data Logger Reset". The "Data Logger Reset" menu option allows the user to reset the data logger. This option clears all the logged information. Select the "Data Logger Reset" menu item. The Advisor shows the time that is available for the data logger on the right side of the screen. Thirty minutes will be available after the data logger has been reset.
Note: The Data Logger is the only onboard file that can be reset through the Advisor display. The Advisor must be in the Service Mode or the Caterpillar Electronic Technician (ET) must be connected to the data link to reset the data logger. Also, this is true to perform other service functions. The VIMS-PC software is not needed to reset the data logger.
The "System Parameters" submenu will display the ECM status of the system components. Some of the components may use multiple screens to display all the parameters that are monitored. The "System Parameters" submenu will sort all parameters into the following categories:
- "Sort By ECM" allows the user to view the parameters that are associated with separate system components.
- "Sort By Type" allows the user to view the parameters that are associated with separate units of measurement.
- All parameters
"Sort By ECM"
The "Sort By ECM" submenu will sort all parameters into the following categories:
- "Advisor": This selection will display the parameters for the Advisor monitoring system.
- "Brake": This will display the parameters that are monitored by the brake ECM.
- "Chassis": This will display the parameters that are monitored by the chassis ECM.
- "Engine": This will display the parameters that are monitored by the engine ECM.
- "Transmission": This will display the parameters that are monitored by the transmission ECM.
- "VIMS": This will display the parameters that are monitored by the VIMS ECM (payload).
"Sort By Type"
The "Sort By Type" submenu will sort all parameters into the following categories:
- "Temperatures": This will display the parameters that are monitored under the category of temperature.
- "Pressures": This will display the parameters that are monitored under the category of pressure.
- "Speeds": This will display the parameters that are monitored under the category of speed.
- "Operator Inputs": This will display the parameters that are monitored under the category of operator input.
- "Machine Status": This will display the parameters that are monitored under the category of "Machine Status".
- "Totals": This will display the parameters that are monitored under the category of totals.
"All Parameters"
The "All Parameters" menu option allows the user to view the entire list of parameters.
The following selections are available through the "Calibrations" submenu:
- "Truck Payload"
Use the appropriate arrow button to highlight the desired calibration from the list. Then press the "OK" button. Follow the directions that are displayed on the screen to perform the calibration.
The following selections are available through the "System Tests" submenu:
- "Manual lube mode" (if equipped)
- "Self test" (functional test)
The "System Information" submenu will display details about the software version and details about the ECM module for the following systems:
- "Advisor"
- "Engine"
- "Chassis"
- "Transmission"
- "Brake"
- "VIMS Main"
- "VIMS Analysis"
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| Illustration 10 | g01923777 |
The "Settings" menu option is accessed from the "Home" menu. Press the up arrow button or the down arrow button until "Settings" is highlighted. Then press the "OK" button.
Operating conditions, preferences of the operator and requirements for operating efficiency dictate the need to adjust the parameters.
The "Display Setup", "Brake", "Chassis", "Transmission", and "VIMS" selections that are available in the "Setttings" menu can be password protected with the "Service Mode" password to limit access to programmable parameters. The programmed parameters in the password protected menu options are available for viewing only. Cat ET must be used to set the password.
The following selections are available through the "Settings" menu:
Individual preferences for the "Display Setup" need to be saved in the operator profile.
If the profile is set to "Factory Set", the preferences will revert to the default setting when the keyswitch is turned OFF. To save a preference, a profile must be selected or created. Refer to ""Create Profile"" in the ""Operator" Menu" information.
The following selections are available through the "Display Setup" submenu:
- "Language"
- "Units" ("English" or "Metric")
- "Contrast"
- "Lights on"
- "Lights off"
- "Date format"
- "Time format"
"Lights on" will adjust the setting of the backlight for the display screen. This setting will determine the backlight intensity that will be used when the headlights are placed in the ON position.
"Lights off" will adjust the setting of the backlight for the display screen. This setting will determine the backlight intensity that will be used when the headlights are placed in the OFF position.
The following selections are available through the "Brake" submenu:
- "Maximum engine retarding speed"
The following selections are available through the "Chassis" submenu:
- "Autolube interval"
- "Body up gear limit"
- "Loaded machine speed limit"
- "Transmission maximum forward gear"
- "Machine overload speed limit"
- "Machine speed limit"
The following selections are available through the "VIMS" submenu:
Payload
- "Payload" (target weight)
- "Setting" (overload limit)
- "Last pass indicator"
RAC Severity
- Road analysis severity selection
Conditional Logger
- "Enable"
- "Disable"
The following selections are available through the "Machine" submenu:
- "Product identification"
- "Machine identification"
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| Illustration 11 | g01923778 |
The "Service Mode" menu option is accessed from the "Home" menu. Press the up arrow button or the down arrow button until "Service Mode" is highlighted. Then press the "OK" button.
The "Service Mode" menu is used to access the password protected menu options. The "Service Mode" protects certain features from access by the operator. Features that are protected from the operator can be "enabled" or "disabled" with a password.
Note: A password may be required or a password may not be required. This depends on the settings that have been made in Cat ET.
A Service Tool must be used to program the password into the display. The password cannot be changed within the Advisor.