Data for the machine is recorded in the onboard memory of VIMS 3G. The information is organized into categories. This information is used to analyze problems with the machine. The information is typically used at a later date by service technicians or management. The categories of information are listed here:
Event List - The event list is a record of stored events and diagnostics that have occurred on the machine. Not all events are stored. The record contains the last 500 events and diagnostics that are listed in the order of occurrence. The newest events appear at the top of the list. The event list transfers the oldest data into the event summary list when the event list exceeds 500 records. The event summary list is composed of the first five occurrences, the last five occurrences, and the worst five occurrences recorded events. The event summary list is limited to storing 500 records.
Snapshot - The snapshot stores a segment of history for all parameters (channels) at a 1 second interval. The snapshot relates to a set of predefined events. A snapshot is triggered automatically for a severe event. The snapshot is then stored in memory. The configuration software designates the events that are considered to be severe events. The "Trigger Snapshot" menu option can be used to initiate a snapshot manually. A snapshot consists of all of the parameters that describe the conditions of the system. The snapshot records data from 5 minutes before the event to 1 minute after the event. This strategy is also applied to snapshots that are triggered immediately after key ON. However, a portion of the 5 minutes of data that occurred prior to the event was captured prior to turning the key OFF. This portion of data may have been stored hours or days before the event that triggered the snapshot.
VIMS 3G has the capability of storing two sets of snapshot information. If a snapshot is in the process of being recorded and a second snapshot is triggered, the second snapshot will be recorded simultaneously .
The snapshot information is accessible only with VIMSpc.
Data Logger - Continuous - The Continuous Data Logger stores the last 1 hour of machine data, recording data at all times. The newest data over writes the oldest data.
Data Logger - Standard - The Standard Data Logger captures all of the parameters that are monitored by VIMS. The data logger is recorded in 1 second intervals. The operation of the data logger is like the snapshot. Unlike a snapshot, the data logger cannot be triggered by an event. However, the data logger can be automatically started and stopped by parameters that are designated in the configuration. The manual triggering of the data logger can only be done by VIMSpc or the Advisor display. The data logger can be started and stopped. The data logger has a total recording time of 30 minutes.
The information that is recorded by the data logger is accessible only with VIMSpc. The data logger can be reset by VIMSpc or the Advisor display.
Trends - Trend information consists of the minimums, maximums, and averages of parameter data over time. Trend information is viewed with VIMSpc software. The trend information can be displayed as a graph or as columns of data. An example of trend information is the average brake temperature per hour. Trend information is recorded for predefined parameters for each machine. Trend information is recorded under the specified guidelines that are listed here:
- All 1 hour continuous trends begin when the key start switch is turned to the ON position.
- Any data for a trend that is collected for less than 1 hour when the key start switch is turnedOFF is discarded.
- Trend points are the average of each trend that was captured during the past hour. Each trend must meet the conditions that are set for that trend. A single trend point for the designated hour is calculated and stored when the measured trends are averaged over 1 hour.
The data point or the responsible Failure Mode Identifier (FMI) are stored according to the guidelines that are listed here:
- At least 1 "Trend condition" was met.
- "Conditions not met FMI 19" or the actual FMI that was responsible for the conditions that were not met is stored.
Trends are accessible only with VIMSpc.
Cumulatives - Cumulative information is the number of occurrences (counts) of specific events. An example of cumulative information is total engine revolutions or total fuel consumption over the life of the machine or component. Cumulative information is recorded for a standard set of parameters. The parameters are defined in the configuration software for each machine.
Note: There are cumulatives that are resettable. These resettable cumulatives can be viewed and reset only with Advisor. See Systems Operation, "Monitoring System" in this manual.
Histograms - Histogram information records the history of a parameter since last reset. Histograms can be used to evaluate the range of operation for a parameter. The histogram of the engine speed could indicate the percentage of time that the engine operated within a defined speed limit for a time interval.
Histograms are accessible only with VIMSpc.
Payload - Payload information is recorded for the off-highway trucks, as required.
Total payload data is accessible only with VIMSpc. Basic data is available through the Advisor display by accessing the "Payload" menu option or "System Parameters" under the "Service" menu.