Company
Light Signal Alarm System LSAS
Bridge Navigational Watch Alarm System - Description |
1.0 Generals The purpose of a bridge navigational watch alarm system is to monitor bridge activity and detect operator disability which could lead to marine accidents. The system monitors awareness of the Officer of the Watch (OOW) and automatically alerts the Master or another qualified person if for any reason OOW becomes incapable of performing OOW's duties. This purpose is achieved by series of indications and alarm to alert first the OOW and, if he is not responding, then to alert Master or another qualified person. Additionally, the BNWAS provide the OOW with means of calling for immediate assistance if required. This user manual (short version) is made for persons who know basic standards of watch alarm system. PLC's program and its time dependant periods are secured by password. All reset inputs are protected against permanent reset. 1.1 Installation After control panel (WAP 220.11.x.0) and terminal board module (WAT 220.24.1.0) are installed according to technical documentation by authorized personnel, module has to be supplied by 24VDC battery power supply (terminal board -X1: 1, 3). Potential free n/o failure contact (terminal board -X1: 5,6) closes and system is ready for switch on. 2.1 Manual switch on Authorized person (Master) switches on system by single turning the key-switch -S1 on control panel (WAP 220.11.1.0) to position "ON/OFF". System's running is indicated by activating last chosen illuminating push button (WAP 220.11.1.0 -S2/H2 "3 min", -S3/H3 "9 min", -S4/H4 "12 min") as well as activating illumitating push button -S5/H5. "TEST/RESET". If dormant period (3 min, 9 min, 12 min) shall not be changed, authorized person (Master) pull of the key. Dormant period is counting down from the moment that system has been switched on. Dormant period is the period within OOW is monitored but no further alert has been triggered. 2.2 Automatically switch on System can be switched on by external systems via potential free steady n/o contact which has to be connected on terminal board module -X1:7 & 8. 3.1 Select dormant periode In case that authorized person (Master) demands to select other dormant period, person has to move key switch -S1 on control panel to "SELECT". In this position only dormant period can be chosen by using corresponding push button (WAP 220.11.1.0 -S2/H2 "3 min", -S3/H3 "9 min", -S4/H4 "12 min"). Illuminated push button indicates the choice. By moving the key switch into centre position dormant period has been accepted and count down starts. Authorized person (Master) can pull of key only in centre position. Dormant period (3 min, 9 min, 12 min) show after which period automatically generated alert sequences will be triggered. (see time table, schematic diagram) 4.1 Reset of dormant period As a rule monitored person (OOW) resets dormant period by pushing illuminating push button "TEST/RESET" (-S5/H5) during his actual work on bridge area. Every reset is re-starting complete count down independent of its moment. To serve rules of ergonomics several reset units should be placed on strategic locations on bridge and bridge wing area. These reset units are maximum sized illuminated push buttons as well as loud electronic sounder which have been connected on terminal board module (WAT 210.24.1.0) 4.2 Alert sequences start automatically 4.2.1 visual indications If dormant period is over without OOW's reset, system activates all reset units by 2 Hz flash light. All units are dimmable via central dimmer on control panel (WAP 220.11.1.0) Minimum illumination has been fixed. 4.2.2 Alert stage 1 If dormant period and flash light period (15 sec) are over without OOW's reset, system activates electronic buzzer on terminal board module (WAT 220.24.1.0) as well as additional buzzers located on bridge wing area. Alert stage 1 is triggered to pay attention to monitored OOW. Sound characteristics can be adapted on by parameter settings (PLC -P1). Additional buzzers can be connected directly on terminal board module (WAT 220.24.1.0, -X1: 49, 50 & 55, 56). 2 potential free contacts have been closed (WAT 220.24.1.0, -X1: 7, 8 & 9,10) for further use as well as for VDR link. 4.2.3 Alert stage 2 If dormant period, flash light period (15 sec) and alert stage 1 (15 sec) are over without OOW's reset, system activates 2 potential free n/o contacts on terminal board module (WAT 220.24.1.0, -X1: 13, 14 & 15, 16) for generating further alert via optic / acoustical alarm devices in officer's area (cabins or staircase) as well as for VDR link. 4.2.4 Alert stage 3 If dormant period, flash light period (15 sec), alert stage 1 (15 sec) and alert stage 2 (30 sec) are over without OOW's reset, system activates 2 potential free n/o contacts on terminal board module (WAT 220.24.1.0, -X1: 17, 18 & 19, 20) for General Alarm trigger as well as for VDR link. 5.1 Emergency call Monitored OOW is able to generate an emergency call by pushing any reset unit longer than 5 sec. That activates without delay alert stage 2 and subsequently alarm stage 3. After emergency call has been released, reset is possible by pushing a reset unit. |
La descripción del sistema de alarma y vigilancia en el puente de navegación BNWAS especifica el propósito, las características técnicas y la filosofía como versión abreviada para los usuarios exclusivamente.
sm electrics GmbH | Am Wulfsbarg 17 | 24217 Stakendorf / Germany | phone: +49 4344 - 41 22 73 | fax: +49 4344 - 41 35 40 | info@sm-electrics.de