Furuno BR-2000 OPERATORS MANUAL

BRIDGE ALARM MONITORING & WATCH SAFETY SYSTEM

BR-2000

Contents

1 INTRODUCTION....................................................................................3

2 ALARM MONITORING SYSTEM (AMS)...............................................4

2.1 Multipurpose Screen......................................................................... 4

2.1.1 Conning page................................................................................ 4

2.1.2 Alarm page.................................................................................... 6

2.1.3 Function page...............................................................................7

2.2 Alarms................................................................................................ 9

2.2.1 General.........................................................................................9

2.2.2 Alarm categories .........................................................................10

2.2.2.1 Group alarms ...........................................................................10

2.2.2.2 Detailed alarms........................................................................10

2.2.3 Alarm types.................................................................................10

2.2.3.1 Event alarm.............................................................................. 10

2.2.3.2 State alarm............................................................................... 10

2.3 Alarm / Conning control panel.......................................................11

3 WATCH SAFETY SYSTEM (WSS)......................................................12

3.1 Description of system's function...................................................12

3.2 Timer Control panel ........................................................................13

3.3 Bridge Control panel.......................................................................13

3.4 Cabin Control panel........................................................................ 15

3.5 Remote reset push button..............................................................15

4 FLOW CHART OF AMWSS.................................................................16

1. INTRODUCTION

Alarm Monitoring and Watch Safety System (AMWSS) is intended to centralize all bridge and other
important alarms to one posit i on on the bridge and to monitor watchkeepers activity as well as to ensure
his well-bein g.

The system operation is divided in t wo indepe ndent Programmab le Log ic Com puter (PLC) sy st ems, one
taking care of Alarm Monitoring and the second one to take care of Watch Safety Sy st em. The PLC for
Watch Safety System is also generating an independent "Off course" monitoring, "Gyro mismatch" and
"Magnetic compass compare" functio ns.

Both systems are described in the drawing below.

Fig. 1 Block Diagram

2. ALARM MONITORING SYSTEM (AMS)

The basic feature of alarm mo nit oring PLC is to collect all bridge and other imp ortant alarms and display
them on the multipurpose screen. When the full redundancy and greater flexibility of dis play is requ ired
then two independent comp ut ers and screens are optionally inst alled.

2.1 Conning/Alarm Display

Two multipurpose screens are used to display either the conning information or the alarm information.
Conning and the alarm dis plays are processed in "Display Cont rol Computers".

In some cases depending on redundancy requirements the other multipurpose screen can be replaced
by an other integrated system's screen equipped with change-over switch - e.g. ECDIS-screen.

2.1.1 Conning page

Conning pages can be configured up to two different pages (i.e. main and harbour conning). Conning
pages are selected on Conning Display Control panel.

The conning information is mainly received from following external sy st ems:

- ECDIS processor waypoi nt information

- Track pilot heading order, steering mode and Off-Track information*

- Autopilot heading order and steering mode information*

- Gyrocompasses Headin g information*

- Magnetic Compass with T M C Heading information*

- Heading Change-over se l ected heading and status infor mation*

- Rate Of Turn information

- Rudder Angle Indication

- Propulsion infor mation

- Thruster Pitch Information

- Echo Sounder Depth and Set Limit information**

- Wind Indicator Speed and Bearing information**

- Dual-axis Speed Log information**

- Machinery information from DCS

*: Information applied through the Watch Safety Electroni c unit.

**: Information applied through t he ECDIS.
The latest five "non-acknowledged" alarms are displayed in the lower right corner of the display.
The following Watch Safety information is displayed in the low er left corner of the display.

- Bridge Watch set condition; “Enable” or “Disabl e”

- Back-up navigator select ion

- Timer bar indicatio n

Examples of Main Conn ing and Harbour Conning pages are shown in figures on next pa ge.

Fig. 2 Main Conning Page

Fig. 3 Harbour Conning Page

2.1.2 Alarm page

Three alarm pages are availab le as b elow.

1) Navigation Alarm page:

It consists of four windows indicating navigation related alarm. (See Fig. 4)

a) Navigation Safety: Nav iga tion alarms requiring great attention for safety.
b) Navigation Equipment: Navigation sensor system a l arms.
c) GMDSS alarms: It alert s w hen any distress call received.
d) ECDIS alarms: Actual ECDIS alarms. Important alarms are transferred to the Navigation

Safety and Navigation Equipment windows for navigator’s attention; e.g. Waypoint Approach,
Off-track, Depth below limit, Posit ion u n rel iable, No speed available, No course availabl e.

2) External Alarm:

It consists of several windows indicating external alarms (Engine, Cargo, Steering Gears, General
Alarms, etc.), which are applied from Machinery/Cargo DCS. (See F ig. 5)

3) Local Alarm:

This page is prepared for the navigation equipments, which have no own visual display. (Track pilot,
Autopilot) The alarms generated in the AMWSS itself are also displayed on this page. (See Fi g. 6.)

Alarms are displayed and processed in different priorities for the identification of alarm importance.
Priorities are as following s:

- Emergency alarms - alarms which indicate that immediate danger to human life, or to the ship
and its machinery exists and t hat immediate action must be taken.

- Distress, urgency and s afety alarm s - alarms, which indicate that a caller is in d istress or h as
an urgent message to transmit.

- Primary alarms - alarms, which ind icate a con dition that require s, prompt att ention to prev ent an
emergency condition.

- Secondary alarms - all other alarms.

Each alarm is associated with coloured marker showing int o which priority the alarm belongs.

- Emergency alarms – red marker

- Distress, urgency and safety alar m s – y e llow ma r ker

- Primary alarms – white marker surrounded by red stripe

- Secondary alarms – red marker surrounded by white stripe

The latest five active alarms are displayed in the alarm list in the lower right corner of the display. The
rest of the active alarms are displayed on alarm pages. Alarms in the active alarm list are shown in
order of priority and occurrence.

Non-acknowledged alarms are indicated with a flashing red text and marker and buzzer.
Acknowledged but pending alarms are distinguished from other alarms by steady non-flashing yellow
alarm text on alarm page.

Yellow text below alarm list e.g. Pending navigation alarm, means that there is at least one pending
alarm on alarm page.