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 position on the bridge and to monitor watchkeepers activity as well as to ensure his well-being.

The system operation is divided in two independent Programmable Logic Computer (PLC) systems, one taking care of Alarm Monitoring and the second one to take care of Watch Safety System. The PLC for Watch Safety System is also generating an independent "Off course" monitoring, "Gyro mismatch" and "Magnetic compass compare" functions.

Both systems are described in the drawing below.

Fig. 1 Block Diagram

2. ALARM MONITORING SYSTEM (AMS)

The basic feature of alarm monitoring PLC is to collect all bridge and other important alarms and display them on the multipurpose screen. When the full redundancy and greater flexibility of display is required then two independent computers and screens are optionally installed.

2.1 Conning/Alarm Display

Two multipurpose screens are used to display either the conning information or the alarm information. Conning and the alarm displays are processed in "Display Control 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 systems:

-ECDIS processor waypoint information

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

-Autopilot heading order and steering mode information*

-Gyrocompasses Heading information*

-Magnetic Compass with TMC Heading information*

-Heading Change-over selected heading and status information*

-Rate Of Turn information

-Rudder Angle Indication

-Propulsion information

-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 Electronic unit. **: Information applied through the 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 lower left corner of the display.

-Bridge Watch set condition; “Enable” or “Disable”

-Back-up navigator selection

-Timer bar indication

Examples of Main Conning and Harbour Conning pages are shown in figures on next page.

Fig. 2 Main Conning Page

Fig. 3 Harbour Conning Page

2.1.2 Alarm page

Three alarm pages are available as below.

1)Navigation Alarm page:

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

a)Navigation Safety: Navigation alarms requiring great attention for safety.

b)Navigation Equipment: Navigation sensor system alarms.

c)GMDSS alarms: It alerts when 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, Position unreliable, No speed available, No course available.

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 Fig. 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 Fig.6.)

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

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

-Distress, urgency and safety alarms - alarms, which indicate that a caller is in distress or has an urgent message to transmit.

-Primary alarms - alarms, which indicate a condition that requires, prompt attention to prevent an emergency condition.

-Secondary alarms - all other alarms.

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

-Emergency alarms – red marker

-Distress, urgency and safety alarms – yellow marker

-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.