The alarm display is a display of all standing alarms both acknowledged and unacknowledged. The system can include from 1 to 4 systems (bridge, machinery etc), each alarm system has its own alarm list.
Up to 20 alarms can be displayed on the screen, if there are over 20 alarms the actual number is shown in the bottom right of the display.
The colour of the alarm text is normally green with the alarm ‘state’ text in red (if priority 1 alarm) or magenta (if priority 2) or yellow (if priority 3). A right click on the alarm brings up a small menu with two texts: DISPLAY CHANNEL and ACKNOWLEDGE. Left clicking on ACKNOWLEDGE allows the alarm to be acknowledged or if not possible, the text is shown in grey (already acknowledged or horn not silenced etc). Left clicking on DISPLAY CHANNEL opens the display for the particular system the alarm originates from. Detailed alarm information, such as delays and limits etc., is also shown.
Trend Displays
One to five graphs for supervised parameters can be displayed in the same trend display with individual colour and measuring scale. The individual colour is used to separate the ID number, the measuring scale, the trend curve, and the digit valve for each measurement. See Section 3.1.5
Alarm Groups
An alarm group is a list of alarms for one machinery component (independent of alarm state). Up to 100 alarm groups are available. The list is sorted alpha-betically after the I.D.
The possible states for an alarm channel are as follows:
State Appearance Description
NORM Steady Green Alarm channel in normal
state
ALM Flashing Red Unacknowledged alarm:
Priority 1
ALM Steady Red Acknowledged alarm:
Priority 1
ALM Flashing Magenta Unacknowledged alarm:
Priority 2
ALM Steady Magenta Acknowledged alarm:
Priority 2
ALM Flashing Yellow Unacknowledged alarm:
Priority 3
ALM Steady Yellow Acknowledged alarm:
Priority 3
FAIL Flashing Red Unacknowledged alarm:
Sensor fail
FAIL Steady Red Acknowledged alarm:
Sensor fail outside range
NORM / CA Steady Blue Standing alarm:
Suppressed/Cut out
?
Steady White GOS/GAMMAComputer hardware failure
There are also lists for alarm suppressions and alarm failures.
Display Channel Diagram
This displays detailed information of an alarm channel and it is possible to adjust some parameters although these are password level 1 protected. The display channel diagram for a binary and analogue channel are shown in illus-tration 3.1.3a. the configuration includes:
Type: Analogue or Binary
Alarm system: Name of alarm system the channel belongs to Outstation: Name of the outstation where PLC is located
Address: Address number for PLC
The Channel parameters are also shown here and may include:
Limit: Binary has 1 limit, Analogue may have 3 for an alarm and 4 for an event
Type: Binary/low limit/high limit Message: Message text
Prio.: Alarm channel priority
Value: Limit value for analog channels Delay on/off: Delay times/adjustment etc
M.cut: Manual cut out on/off, adjustment etc Standard Function Block Diagrams
These diagrams are divided into 12 blocks (squares), each one representing one machinery component. Information from each component is displayed as a
‘standard function block’. There are two main types of object: digital and analog.
Digital Objects are used to display the status of a machinery component such as a pump. The current status is shown as a symbol and as text, usually running or stopped. From these digital objects it is possible to send start and stop commands.
Analogue objects are used to display the current value of a measurement or an adjustable value. The value can be shown as a number and/or a bar graph.
Function blocks can be operated in local or remote and manual or automatic modes. Change over is carried out directly on the machinery component.
Function blocks are described in more detail in the manufacturers operation manual for this system.
Mimic Diagrams
A mimic diagram shows a machinery system as a static background with dynamic objects as symbols upon it representing the machinery components and function blocks of bar graphs etc for measurements. These mimics give a good overview of a system showing graphically the location of the measurement or machinery component. Clicking on the object reveals an I.D.
Mimics can be opened by clicking on the appropriate listing from the main menu or choosing EDIT from the menu bar and selecting OPEN BY NAME from the drop down menu. Entering the system I.D. will display the required mimic diagram.
00:00 05:00 10:00 15:00 20:00 25:00 30:00 MM:SS
0 0
0
100 100 100
200 200 200
300 300 300
400 400 400
500 500 500
600 600 600
200
0 0
100 100
200 200
300 300
400 400
500 500
600 600
Main Engine Temperature
95/09/15 14:10:25 =>341.3 234.2342.2 207.0 284.6
M.E. Cylinder 1 Temperature ( 0 - 600 ˚C )
M.E. Cylinder 2 Temperature ( 0 - 600 ˚C )
M.E. Cylinder 3 Temperature ( 0 - 600 ˚C )
M.E. Cylinder 4 Temperature ( 0 - 600 ˚C )
000033 000034 000035 000036 410.75
348.53 302.92 484.24
000037
221.84 M.E. Cylinder 5 Temperature ( 0 - 600 ˚C )
The trend display with 5 curves showing the exhaust gas temperature for half an hour. The arrow on the top of the graph chart is used to point out the time, for which the digital values are indicated in the top line for each of the seven curves.
Illustration 3.1.5.a Trending Display
3.1.5 Trending
The system can display one to five graphs for parameters under analysis in the same trend display with individual colours and measuring scales. The individual colour is used to separate the ID number, the measuring scale, the trend curve and the value for each measurement.
Trend displays that are used often can be accessed directly from the command menu named GRAPH. Trend curves showing values for the previous 24 hours (maximum 4 days) or part of that period, are based upon the continuously logged data. A Trend display for a period exceeding the last 24 hours (maximum 4 days) are based upon the compressed values.
Parameters, which are not predefined for logging, may be displayed during on-line data collection, initiated at the request of the operator. There is also a zoom function available, selected by pointing out the area required using the tracker ball.
Trend curves can be saved as a file on the PC hard disk or printed as screen dumps for subsequent printing or analysis. The data used for the trend displays are accessible on the Graphic Operator Stations and can be printed in tabulating form on a printer.
The SHOW GRAPH function is used for setting up a graph-diagram. The graph pictures can be particularly helpful in identifying and analysing the operating disruptions. Additionally, it can be helpful in providing a visual evaluation of changes of the process values, just as the graphs are an important tool in connection with the documentation of the vessels operation. In the individual configuration, a number of graph windows can be configured, each one displaying graphs of up to 5 variables of predetermined element values.
If the operator selects one or more elements, the graph diagram will automati-cally include these. (More than one element can be selected by keeping the [shift] key pressed when selecting the elements). Regardless of how it is opened, a graph window has a fixed position and size on the screen.
The fixed definition graph can be selected from the menu Graphs (by clicking on the required graph name). The Graphs menu can contain up to 19 graph displays.
If no elements are selected when the operator activates the SHOW GRAPH function, a box will appear showing a list of all elements in the system. From the list you can select up to five elements which are displayed simultaneous-ly in the graph-diagram.
Start Time and Window Period for Graphs
After opening a graph window, the operator will be asked to key in a start time and a window period. This will occur if the graph window is not defined to start with fixed time specifications.
The system always suggests the current time as the start time unless it has been defined to start a number of hours before. If the operator does not want to change this, the time can be accepted by using the RETURN key. The start time is the time when the desired graph is to be started, while the window period is the length of the time of which the axis is to be displayed in the graph field. The length can also be changed by the operator before the activation.
A start time which goes back in time up to 90 days can be determined. Of course, this requires that the relevant data is still accessible on the hard disk.
When the start time and period length, which are to be displayed, have been keyed in the RETURN key must be activated. Hereafter, the Graphic Operator Stations will retrieve and work up data in order to draw the desired graph on the screen. As the new values accrue to the system, the graph will be updated.
Error Messages in Connection with Graph Generation
If, within the selected time period there has been a period in which data has not been collected, or in which data has later been deleted, an error message appears on the screen, e.g. ‘Open error on file TEST.L13’. This just means that the drawn graph is not complete since data cannot be found for the entire period. The message means that data for a whole hour is missing. If data for less than a whole hour is missing it will be shown in the graph by horizontal lines.
Changing the Presentation of a Graph Display
During monitoring, the display of the graphs can be changed in a number of different ways. The display of one or more of the (up to five) graphs can be removed from the graph window. This is done by clicking the element name in the upper part of the window. The name will now be displayed with a weak type, and the accompanying graph is ‘closed’.
The graph can be retrieved by clicking the element name once more or for all by clicking at a field placed just to the right for all the graph names. Being able to de-activate one or more graph displays can, for example, be helpful in situations where two graphs completely or partially cover one another, or in situations where one of several graphs is desired to be examined more closely or even printed separately.
If the element name in a graph window is double-clicked, the area is filled out under the curve with full colour or with a raster pattern. If normal display is desired again, double-click the name and the curve will appear as a line. Even though the area is filled out, the curve can still be ‘turned off’ by clicking the name.
The display with a filled area under the curve is particularly useful when having to present analogue alarm channels with high alarm limit, low alarm limit as well as the current value in the same curve picture. The alarm areas can be displayed as ‘belts’ and the elements current value as a line between these two belts.
Regardless of the selection of the graph form, the zoom and pan functions are the same.
Graph Data in Table Format
It is possible to get a complete list of all of the values which are used for the graph drawing. This is achieved by a double-click on the ruler symbol, whereafter a window, containing the recorded values in table form, is opened.
The values are presented in table form together with date and time for their recording.
The table is displayed for each element variable on the graph window. The table is framed with a line which has the same colour as the column on the graph window.
The Up and Down buttons located at the bottom of the window, are used to scroll up and down in the table (i.e. backwards and forwards in time).
Illustration 3.1.6a UMS2100 System Layout
yngso Marine L
UMS 2100 BASIC ALARM PANEL
ALARM GROUP6GROUP7ALARMGROUP8ALARMGROUP9ALARMGROUP10ALARM
ALARM MAN WATCHPRINTER
CON-TROL ADJUST CHAN-NEL
DUTY MAIN- TE-NANCE DISPLAY
CHAN-NEL STOP HORN ALARMACKN.
FIRE FAULT
1 ABC 2 DEF
8 VWX
7 STU 9 YZ Ospace
+/-3 GHI 4 JKL 5 MNO 6 PQR
Ship's Control Centre
Bridge Control Console
EAD
EAD Box
EAD Box
Chief Engineer's Office EAD
UMS 2100 ACCOMMODATION ALARM PANEL
ALARM ALARMLIST
ALARM GROUP1
ALARM GROUP6ALARMGROUP7ALARMGROUP8ALARMGROUP9GROUP10ALARM
ALARM
CALL DUTY
MAIN- TE-NANCE DISPLAY CHAN-NEL STOP HORN ALARMACKN.
FIRE FAULT
UMS 2100 ACCOMMODATION ALARM PANEL
ALARM GROUP6GROUP7ALARMGROUP8ALARMGROUP9ALARMGROUP10ALARM
ALARM
ASSISTCALL DUTY MAIN- TE-NANCE DISPLAY CHAN-NEL STOP HORN ALARMACKN.
FIRE FAULT
UMS 2100 ACCOMMODATION ALARM PANEL
ALARM GROUP3ALARMGROUP4ALARMGROUP5 ADD.
LIST
ASSISTCALL DUTY MAIN- TE-NANCE DISPLAY CHAN-NEL STOP HORN ALARMACKN.
FIRE FAULT
UMS 2100 ACCOMMODATION ALARM PANEL
ALARM GROUP3GROUP4ALARMGROUP5ALARM ADD.
LIST
ASSIST CALL DUTY MAIN-
TE-NANCE
UMS 2100 ACCOMMODATION ALARM PANEL
ALARM GROUP3ALARMGROUP4ALARMGROUP5 ADD.
LIST
ASSIST CALL DUTY MAIN-
TE-NANCE
UMS 2100 ACCOMMODATION ALARM PANEL
ALARM GROUP6GROUP7ALARMGROUP8ALARMGROUP9ALARMGROUP10ALARM
ALARM CALL DUTY MAIN-
TE-NANCE DISPLAY
CHAN-NEL STOP HORN ALARMACKN.
FIRE FAULT
UMS 2100 ACCOMMODATION ALARM PANEL
ALARM GROUP6GROUP7ALARMALARMGROUP8ALARMGROUP9GROUP10ALARM
ALARM
ASSISTCALL DUTY MAIN- HORN ALARMACKN.
FIRE FAULT
UMS 2100 ACCOMMODATION ALARM PANEL
ALARM GROUP3GROUP4ALARMGROUP5ALARM ADD.LIST
ASSISTCALL DUTY MAIN- TE-NANCE DISPLAY CHAN-NEL STOP HORN ALARMACKN.
FIRE FAULT UMS 2100 BASIC ALARM PANEL ALARM ALARMLIST
ALARM GROUP1
ALARM GROUP6ALARMGROUP7ALARMGROUP8ALARMGROUP9GROUP10ALARM
ALARM GROUP3ALARMGROUP4GROUP5ALARM ADD.
LIST
ASSIST CALL DEADMANWATCHPRINTERCON-TROL
ADJUST CHAN-NEL
DUTYMAIN-TE-NANCE DISPLAY CHAN-NEL STOP HORNALARMACKN.
FIREFAULT
1 ABC2 DEF
8 VWX 7 STU 9 YZOspace
+/-3 GHI4 JKL5 MNO6 PQR
Gamma Outstation No.2
Gamma Outstation No.1
yngso Marine L UMS 2100 BASIC ALARM PANEL ALARM GROUP6ALARMGROUP7ALARMGROUP8ALARMGROUP9ALARMGROUP10
ALARM MANWATCHPRINTER
CON-TROL HORNALARMACKN.
FIREFAULT 1st Engineer
Buzzer Chief Engineer
Buzzer Engineers' Alley
Buzzer
UMS 2100 BASIC ALARM PANEL
ALARM GROUP3ALARMGROUP4ALARMGROUP5 ADD.
Engine Control Centre Console
LOP GAMMA 2
LOP GAMMA 1