| WARNING OPERATION | |||||
|---|---|---|---|---|---|
| Warning Category | Warning Indications (1) | "Operator Action Required" | "Possible Result "(2) | ||
| "Alert Indicator Flashes "(3) | "Action Lamp Flashes"(4) | "Action Alarm Sounds " | |||
| 1 | X | No immediate action is required. The system needs attention soon. | No harmful effects or no damaging effects. | ||
| 2 | X | X (4) | Change machine operation or perform maintenance to the system. | Severe damage to components can occur. | |
| 2-S | X | X (4) | X (5) | Immediately change the machine operation. | Severe damage to machine components |
| 3 | X | X (4) | X (6) | Immediately perform a safe engine shutdown. | Injury to the operator or severe damage to components can occur. |
| (1) | The active warning indications are marked with an X. |
| (2) | This is the possible result, if the operator takes no action. |
| (3) | The alert indicator flashes at a 10 Hz rate. |
| (4) | The action lamp will flash at a 1 Hz rate (1 second ON, 1 second Off). |
| (5) | Steady |
| (6) | The action alarm sounds at a 1 Hz rate (1 second ON, 1 second Off). |
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| Illustration 1 | g00302063 |
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Gauge Cluster Module (1) Gauge warning area (2) Pictograph symbol | |
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| Illustration 2 | g00485026 |
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Speedometer/Tachometer Module (3) Tachometer (4) Pictograph symbol for engine speed (5) Ground speed readout (6) Readout of the actual Transmission gear | |
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| Illustration 3 | g00515428 |
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Message Center Module (7) Alert indicator. (8) Data logging indicator. (9) Message area. (10) Universal gauge (11) Gauge warning area | |
The operator will be warned of immediate problems with a machine system or impending problems with a machine system by VIMS.
Warning operations are activated when the VIMS module detects a problem with a signal. The problem signal reflects an abnormal condition of the machine (machine events). Warning operations are also activated when the VIMS module detects a problem with the control system (system event). Switches, sensors and other electronic control modules send electronic signals to the VIMS modules. The problem signals are listed here:
- When a condition exceeds the trip point of the switch, the switch opens.
- When a condition exceeds the trip point of the switch, the switch closes.
- Any abnormal sensor signal that is detected by the main module
The main module analyzes the problem signals. The main module then notifies the operator by activating the appropriate warning indications on the display components. The warning indications are listed here:
- FLASHING of the alert indicator on the message center. (The alert indicator flashes approximately ten times per second.)
- The action lamp FLASHES. (The action lamp is ON for one second and OFF for one second.)
- The action alarm is SOUNDED. The action alarm is ON for one second and OFF for one second during a category 3. The action alarm is ON continuously for category 2-S.
Note: More than one input is required in order to activate some warning indications . The warning indications that are activated will be determined by the main module.
Data events and maintenance events are classified into multiple warning categories. There are four warning categories that are shown to the operator. The categories are based on the severity of the problem and this dictates the response that is required by the operator. Warning category 1 represents the least severe problem and warning category 3 represents the most severe problem. The warning categories are identified for the operator according to the combination of warning indications that are active. Refer to table 1 for additional information on Warning Operations. When multiple events are present, the message area will scroll through all the events in three second intervals. When a category 3 event is active, scrolling through the category 1 and 2 events is not permitted.
The warning category of an event may be raised to a higher warning category automatically. Event duration is used in order to determine if a change in the category is necessary. An example of an event that would require a category change: The warning category 2 for the transmission lube temperature (off-highway truck) changes to a warning category 3 after 150 seconds.
When a category 1 or category 2 event occurs, the operator may acknowledge the event. The operator acknowledges the events by pressing the "OK" key on the keypad. The following information is recorded in the event list for each event:
- The time of occurrence
- The number of times that an event is acknowledged by the operator.
After an event is acknowledged, the warning indications may disappear for a specified time period. The warning indications will reappear for an event that is still active after the time period elapses. These warnings may be acknowledged again.
The Category 2-S is a conventional Category 2 with a continuous action alarm. A Category 2 that is considered to be a severe condition will cause a category 2-S to be logged. A Category 2 instructs the operator to change the operation of the machine in order to correct the condition that is responsible for the warning. The operator is instructed to IMMEDIATELY change operation of the machine that relates to certain Category 2-S events.
Note: Most category 3 events cannot be acknowledged by the operator.