TSHD - Alert Display

Alert Display

For dredging operations certain dredging related alarms are available in the Alert Display.
Each Alert monitors a certain condition, whether that is the I/O flow of data from/to a particular system, or if that is determining whether the value of a particular raw observation is within user-defined bounds, or if that is determining whether the value of a particular computational result is within user-defined bounds.
This page concentrates on those dredging alerts.

Dredging Result alerts are only available when dredging systems are defined in the template database.
The actual alerting values are entered in the Controller's Settings - Session Setup - Dredging menu.

Typically an Alert Display would include other types of alerts in addition to Dredging alerts:

• I/O Alert: Alert to check if data is being received or output by the QINSy computer.

• Raw Data Alert: Alert for raw observation data values received on the QINSy computer.

• Computation Result Alert: Alert for the results of computation observations.

Please refer to Help pages and to the Knowledge Base for information on these other alert types.

Setup

Take the following steps to setup the Alert Display:

Go to “Options” on the menu bar of the Controller and select “Displays”, or click on the Displays button

.

Click on Add Display in the Display Manager dialog.
Select “Alert Display” from the dialog that opens and enter a name.

Click on “OK”; the following display opens:

Click on the

button to open the Select Alerts dialog:

From the four options select Dredging Result. There are four types of alerts available:

Alert Setup Type	Dredging Result
Design state	Above Design - Dredge head is located above selected design. On Target - Dredge head is located on selected design. Over Dredge - Dredge head is located beneath selected design. Not Used - No design selected or grid data is not available.
Intrusion Detection Error (Emergency Hoist)	If the horizontal distance or the vertical distance between the avoidance object and the dredge head is smaller than the entered distance, the Intrusion Detection Error Alert is raised. Usually a Warning corridor is set first to indicate that you are nearing the Error corridor. OK - No cables or pipe lines within range of dredge head. Hoist - Dredge head is within range of cables and / or pipe lines. The dredge head is automatically hoisted (depending on whether the dredger's PLC is interfaced to QINSy) or must be hoisted manually. Not Used - Intrusion Detection Error is disabled.
Poor Mixture Overboard (PMO)	OK - Mixture is OK. Spilling - Mixture is not OK, PMO valve is open.
Intrusion Detection Warning	If the horizontal distance between the avoidance object and the dredge head is smaller than the entered distance, the Intrusion Detection Warning Alert is raised. Usually the Warning corridor is set around the Error corridor.
System	With all four alert types choose which system to monitor.
Dredge Head	With all four alert types choose which dredge head is monitored.

Press <OK> to add the alert to the list.

Repeat Step #3 for each of the four alert types. The final dialog should look like this:

Press OK and the configured display looks like this:

Display Settings

The Settings menu has the following options:

Audible Alarm	An audible alarm sounds when an alert is fired.
Log to Disk	Writes alerts to file, stored to folder \Current Project\LogFiles.
Use Linename for Logfile	Logfiles are preceded with database filename for consistency.
Autostart Logging When Recording / Replaying	Logging is on when the Controller is active.
Explore Log Folder	Opens the LogFiles folder of the current project.
Clear Alert Messages	Clears the messages from the lower pane of the Alert Display window.

Other useful alarms

I/O Alerts	Raw Data Alerts	Computation Results Alerts

Red boxes represent the minimum of alerts to set. Selecting all I/O systems is usually a good idea.

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