HTX30 Product Manual
Fault Finding
6-3
Alerts
Two types of alert can occur during operation.
Alarms:
High priority alerts warning of a fault with the control system.
e.g. Power supply failure.
Warnings:
Lower priority alerts warning of minor events or system changes which will affect normal operation.
e.g. Entering setup or switching into backup mode.
There are four alert states:
Triggered alert = Active.
Cancelled alert = Cancelled.
Triggered alert which has had its fault fixed = Nulled.
Triggered alert which has had its fault fixed AND cancelled = Inactive.
An alert which will not allow normal operation of the vessel must be cancelled and have the fault
fixed before normal operation can continue.
Alert priorities
Different alerts have different priorities based on how likely the fault is to affect vessel operation and safety.
If more than one alert occurs at one time, the highest priority alert is the one that will show on the
station control panel display.
An active alert has higher priority than any cancelled alert.
An alarm has higher priority than a warning.
For example:
If a warning occurs, it will be shown on the display.
If an alarm then occurs, it will replace the warning since it has higher priority.
If the alarm is then cancelled, the warning will reappear, since it is still an active alert.
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