Brooks BOWS020W User manual

Operation / Technical Manual
Standalone OWS
Rev 2.4
Occupant Warning System
BOWS020W, BOWS060W &
BOWS120W
MA380 December 2019

OWS Standalone Manual
MA380 - Rev. 2.4
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Document History
Issue Date Description Written By Checked By
Draft 0 25 Sep 2008 Original Draft Document. Wallace Zhong Anis Shenouda
Rev 1 17/08/2009 Update & finalise draft issue W.Z. / A.S. A. S.
Rev 2 01/05/2011 Add current calculation, add 20W model and
update DIP switch table W.Z. / A.S. A.S.
Rev 2.1 22/08/2013 Minor update, add photos and updated drawings A.S. A.S.
Rev 2.2 23/03/2016 Add table 3 for voice messages and update
drawings A.S.
Rev 2.3 07/09/2017 Update SUB862 to use SUB999 instead Edwin Thein A.S.
Rev 2.4 16/12/2019 Update drawings, SUB999 and Vic address A.S. A.S.

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Table of Contents
1INTRODUCTION ........................................................................................................................................... 4
1.1 Overview ............................................................................................................................................. 4
1.2 Features .............................................................................................................................................. 4
1.3 Specifications...................................................................................................................................... 5
2OPERATIONS ............................................................................................................................................... 6
2.1 Display Layouts .................................................................................................................................. 6
2.2 Mode of Operation.............................................................................................................................. 6
2.2.1 Isolate mode........................................................................................................................... 6
2.2.2 Automatic mode..................................................................................................................... 6
2.2.3 Manual mode ......................................................................................................................... 7
2.3 Fault Indications.................................................................................................................................. 7
2.4 Auxiliary Audio Input........................................................................................................................... 7
3PLANNING..................................................................................................................................................... 8
3.1 System Components.......................................................................................................................... 8
3.2 Monitored Inputs and Outputs ........................................................................................................... 8
3.3OWS Main Control Board SUB860 ................................................................................................... 9
3.3.1 OWS Tones and Messages.................................................................................................. 9
3.3.2 Cables Terminations............................................................................................................ 10
3.3.3 On-Board LED indications................................................................................................... 11
3.4 Optional OWS 4 Zone Splitter Board fits 4580 Brackets - SUB999 .............................................. 12
3.5 Audio Amplifiers................................................................................................................................ 14
3.5.1 Amplifiers Specifications...................................................................................................... 15
3.5.2 20 Watt Amplifier Module .................................................................................................... 15
3.5.3 60/120 Watt Amplifier Module............................................................................................. 15
3.5.4 250 Watt Amplifier Module .................................................................................................. 16
3.6 Power Supply Supervision SUB760................................................................................................ 17
3.6.1 General................................................................................................................................. 17
3.6.2 Connections ......................................................................................................................... 19
3.6.3 On-Board LED indications................................................................................................... 19
3.6.4 Battery Calculations............................................................................................................. 19
3.6.5 Fuses.................................................................................................................................... 20
3.7 Configurations................................................................................................................................... 21
3.7.1 DIP switch settings............................................................................................................... 21
3.7.2 RS232 and RS485 selection............................................................................................... 21
3.7.3 Voice message programming ............................................................................................. 21
4INSTALLATION AND COMMISSIONING................................................................................................. 22
4.1 Battery Check ................................................................................................................................... 22
4.2 AC/DC Power Supply Adjustment................................................................................................... 22
4.3 Sound Pressure Level (SPL) Adjustment ....................................................................................... 22
5BLOCK WIRING DIAGRAMS .................................................................................................................... 23

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Figures List
Figure 1 Brooks Standalone OWS Control Panel ................................................................................................ 4
Figure 2 Main Display Layouts of Brooks Standalone OWS............................................................................... 6
Figure 3 OWS Main Control Board Layout........................................................................................................... 9
Figure 4 OWS Main Control Board C/W 120W Amplifier mounted .................................................................. 10
Figure 5 SUB999 Board Layout .......................................................................................................................... 12
Figure 6 SUB999 fitted into Mounting Brackets CB575 & CB574..................................................................... 13
Figure 7 Class-D 20W Audio Amplifier Board Layouts ...................................................................................... 15
Figure 8 Class-D 60W Audio Amplifier Board .................................................................................................... 16
Figure 9 Class-D 120W Audio Amplifier board .................................................................................................. 16
Figure 10 Class-D 250W Audio Amplifier Board Layouts.................................................................................. 17
Figure 11 SUB760 Power Supply Monitoring Board.......................................................................................... 18
Figure 12 F646B Iss6- Standalone 20W OWS .................................................................................................. 23
Figure 13 F647A Iss5 - OWS 60W Interfaced to CIE ........................................................................................ 24
Figure 14 F647B Iss8 - OWS 60W Standalone ................................................................................................. 25
Figure 15 F648A Iss6 - OWS 120W Interfaced to CIE ...................................................................................... 26
Figure 16 F648B Iss9 - OWS 120W Standalone ............................................................................................... 27
Figure 17 F649A Iss6 - OWS 250W Interfaced to CIE ...................................................................................... 28
Figure 18 F649B Iss6 - OWS 250W Standalone ............................................................................................... 29
Figure 19 F649C Iss7 - OWS 500W Interfaced to CIE...................................................................................... 30
Figure 20 Remote Desktop Microphone PA-1, PA-8 and PA-16 F626 Issue 4 ............................................... 31
Tables List
Table 1 General Specifications ............................................................................................................................. 5
Table 2 Supervised Inputs and Outputs ............................................................................................................... 8
Table 3 Tones and messages specifications ..................................................................................................... 10
Table 4 Connections of the OWS Main Control Board ...................................................................................... 10
Table 5 LED indicators on the OWS Main Control Board.................................................................................. 12
Table 6 SUB999 OWS 4 Zone Splitter Board Status Indications...................................................................... 13
Table 7 I/Os on SUB999...................................................................................................................................... 14
Table 8 Audio Amplifiers Specifications.............................................................................................................. 15
Table 9 Connection of the Audio Amplifier 20W, 60W, 120W and 250W ........................................................ 17
Table 10 Power Supply Supervision Jumper Link Setting................................................................................. 18
Table 11 Connections of the Power Supply Supervision Module ..................................................................... 19
Table 12 LED Indicators on the Power Supply Supervision Board................................................................... 19
Table 13 Current consumption of OWS components ........................................................................................ 20
Table 14 Fuse Specifications .............................................................................................................................. 20
Table 15 DIP Switch Settings.............................................................................................................................. 21
Table 16 Sound Volume Adjustment .................................................................................................................. 22

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1 INTRODUCTION
1.1 Overview
The Brooks Occupant Warning System (OWS) is capable of providing reliable audio and visual warnings
to building occupants. The system is designed to alert occupants to an emergency situation and
evacuate the building in emergency conditions. The standard system is available in 3 different
configurations depending on the amplifier fitted, 20W amplifier “BOWS020”, 60W amplifier “BOWS060”
or 120W amplifier “BOWS120W”. The OWS with 250W amplifier fitted is also available on request, it
requires larger enclosure, PSU and batteries.
This document provides the technical information required to configure, install, maintain and operate a
Brooks OWS and its related components. This document should be read prior installation. Should you
have any queries, please contact Brooks for technical support.
.
Figure 1 Brooks Standalone OWS Control Panel
1.2 Features
A Brooks standalone OWS comprises a main control board, a main display board, an audio amplifier, a
power supply supervision module, an AC/DC power supply and backup batteries within a metal
enclosure. Optional 4 Zone Splitter Board can be added (if the space is available). An optional Brooks
series of remote paging desk microphones can also be added1.
The Brooks series of OWS systems have the following features.
1. Automatically switch from alert to evacuation tone in emergency conditions. Time is configurable
via a DIP switch setting; 0, 1, 3 or 5 minutes. Refer to Table 15 page 21.
2. Configurable audio warnings with pre-recorded digital voice messages.
For Australian convention, it meets the requirements of ISO7731, ISO8201, clause 3.22 of
AS1670.1 and relevant clauses of AS1670.4
For New Zealand convention, it meets the requirements of AS2220.1 as required in
NZS4512 standard.
For non-regulatory applications, the tones and voice message can be customised2.
Local PA facility via a built-in electret microphone.
1Only PA-1 remote desk top microphone can be connected to the standard series of Brooks OWS, PA-8 requires the addition of 4 zone
splitter boards.
2Contact Brooks for customised tones and/or voice messages.

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Speaker output can be split into a max of 48 individual speaker circuits3. Each circuit is
individually supervised for short and open-circuit faults.
Note: Check space availability in the OWS enclosure to mount the 4 Zone Splitter Boards,
it may require larger enclosure.
Optional remote desk microphone with an auxiliary input for background music and PA zone
selection (if 4 Zone Splitter Board is fitted).
3. Fully supervised power supply via AS4428.5 power supply supervision module.
4. Intuitive indications and controls via well-grouped LED indicators and momentary switches.
5. A wide range of quality class-D audio amplifiers.
High power efficient amplifiers with standby input to maximize the power conservation.
The available standard amplifiers are 20W, 60W and 120W. The 250W amplifier is available
on customer’s request.
6. Inputs and outputs available to interface to any CIE.
One supervised trigger input (clean N/O contact) to activate the audible and visual warnings
from the fire panel or from any mechanical trigger device e.g. MCP.
One OWS changeover relay contact output to signal fault condition to CIE.
Two changeover relays contact outputs for power supply fault and power fail provided by
the power supply supervision module to connect to an input in the CIE.
One supervised 24V bi-polarity strobe output to provide alert and evacuation visual
warnings.
1.3 Specifications
Table 1 General Specifications
Feature Specification
Mains Power Supply 230V AC, +/- 20%. Wattage 60W - 320W based on the system power supply requirements.
Battery Backup 2 x 12V SLA batteries 7 or 12 AH. The battery capacity is based on the system power
supply calculations and is limited by the enclosure size.
Trigger Input Supervised N/O clean contact, EOL resistor 47K
Speaker Circuit Supervised 100V RMS speaker output, EOL 47K
Strobe Output Supervised 24V Bi-polarity strobe output fused to 1 Amp, EOL resistor 47K
Fault Output 2 x Changeover clean contact for OWS and PSU fault respectively
Operating Temperature 0°C to +50°C.
PA Microphone Built-in electret microphone
Remote Microphone Terminals for optional remote desk top microphone, single or multiple zone selection4
Operating Humidity 5-95%, non-condensing.
Enclosure
IP Rating IP31 (estimated)
Material 1.5mm zinc anneal steel powder coated oyster.
Dimension 400mm H x 320mm W x 165mm D
Weight 12Kg Without backup battery,
Compliance ISO 7731, ISO 8201, NZS4512, AS4428.5 and Clause 3.22 of AS 1670.1
348 Speaker circuits valid only with SUB860 software V2.0
4Multiple zone selection requires 4 zone splitter board (SUB999)

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2 OPERATIONS
2.1 Display Layouts
The OWS main display layout is shown in Figure 2.
PAPA
AutoAuto
FaultFault
ManMan
PA MicPA Mic
IsolateIsolate
Power ONPower ON
SilencedSilenced
BROOKS
Silence
Buzzer
Silence
Buzzer
Press
To Talk
Press
To Talk
EvacEvac
OCCUPANT WARNING SYSTEM
AlertAlert
Figure 2 Main Display Layouts of Brooks Standalone OWS
2.2 Mode of Operation
The OWS has 3 modes of operation as shown in Figure 2: isolate, automatic and manual mode. Only
one of these modes can be selected at any one time. A mode is selected by pressing the mode selection
button on the display and is indicated by a LED next to the button. Pressing the mode selection button
again will de-select the mode and return to the default automatic mode.
2.2.1 Isolate mode5
The OWS operates in the isolate mode as follow:
All the outputs are deactivated.
All the alert, evacuation, PA and background music functions are disabled.
When the trigger input becomes active e.g. alarm signal, either the Alert or Evac LED will flash
based on settings i.e. no tone or voice broadcasted to the speakers.
When a wiring fault is detected, the Fault LED illuminates and the fault relay remains in its active
(normal) state
2.2.2 Automatic mode
In auto mode, when the trigger input is activated, the following will occur:
Audio warning signals (tone and voice) will be broadcasted to all the speakers.
Bi-polarity strobe output will be activated.
Either the Alert or the Evac LED will flash based on the setting.
The buzzer will sound.
5In software version ≥V1.5, when the system is left in the isolate or manual mode for more than 5 minutes, the OWS generates fault. This
fault remains active until the system manually exits the isolate or manual mode and default back to auto mode. This feature is added to
avoid leaving the system in non-auto mode.

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To disable activate emergency warning signals in auto mode, select one of the following:
1. Press the Isolate button.
2. Press the Manual button then press the button of the active tone / message (alert or evac).
Either the alert or the evacuation LED will continue flashing until the trigger input becomes
inactive.
Note: A fault signal will be generated, after 5 minutes if the isolate or manual mode is selected (V1.5
and higher)
2.2.3 Manual mode5
In manual mode; alert, evacuations or PA can be selected manually6.
To access the PA feature:
Press the “Manual” control, the manual LED illuminates.
Press the “PA” control, the PA LED illuminates.
Press “Press to talk” button and while pressed speak into the microphone.
The LED above the “Press to talk” button illuminates while the microphone is active.
2.3 Fault Indications
When a fault in the OWS (SUB860) or in the power supply supervision (SUB760) is detected, the fault
LED on the front display illuminates and the Fault relay will de-energise.
The buzzer will sound in either alarm or fault conditions. To mute the buzzer, press the Silence Buzzer
button, the silenced LED illuminates.
The power supply fault relay output and the common OWS fault contact can be used to provide a local
warning or report to a remote monitoring equipment.
A new feature is added in the OWS software V1.5 to latch the fault condition when the system is left in
the manual or isolate mode in excess of 5 minutes. The feature has been added to provide audible
warning during routine maintenance or testing if the system is left in no-operative condition.
Note: The buzzer does not re-sound if a new alarm or fault condition is detected when it is muted.
2.4 Auxiliary Audio Input
The auxiliary audio input is available in both automatic and manual modes. The audio signal is fed into
the “AUX” audio input terminals and enabled or disabled via the “AUX. EN” switch input. It supports
either a local background music input or a remote desktop microphone7. Refer to the Brooks remote
paging desktop microphone technical data sheet TDS002 for further details.
The auxiliary audio input can be activated only in the non-alarm condition, it will be automatically
overridden by any alarm signal (activated via the trigger input) or when manually selected for public
address.
6If one or more zone splitter boards (max 4) are installed as well as the PA display board, the PA speaker zones can be individually enabled
or disabled by pressing the related PA zone selection button.
7Brooks desk top microphone provides direct connection of BGM source via built-in audio socket.

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3 PLANNING
3.1 System Components
The following standard modules are used in the Brooks OWS in conjunction with one of the four available
amplifiers:
SUB860, OWS main control module
SUB925, OWS main display board for standalone OWS8,
SUB760, Power supply supervision module,
One of the following class D audio amplifiers:
•SUB864, 20W amplifier
•SUB865, 60W amplifier or
•SUB866 , 120W amplifier or
•SUB867, 250W amplifier (special option),
Other options can be used, depending on system requirements and available space in the standard
metal enclosure:
•SUB862, OWS 4 Zone Expansion Termination Board (discontinued)
•SUB9999OWS 4 Zone Splitter Board fits 4580 brackets
•PA-1 Brooks Remote Paging Desktop Microphone with BGM / PA enable / disable control
SUB862 is replaced with SUB999 which is about 30% smaller. Its circuitry and features remain unchanged.
The board profile was replicated from 458x series of expansion boards that are used in the Addressable
CIEs so that the mounting brackets CB575 & CB574 can be used for mounting up to 4 boards, see
Figure 6.
3.2 Monitored Inputs and Outputs
The Brooks OWS provides inputs and outputs as listed in Table 2 below, each input or output is
supervised for open or short circuit faults. The inputs or outputs require an End Of Line (EOL) resistor,
47K, 1%, metal film, 1/2W.
Table 2 Supervised Inputs and Outputs
Board Item Terminal
SUB860 OWS Main
Control Board
Warning trigger input TB1, 11 - 12
Bi-polarity strobe output TB2, 3 - 4
Speaker line output TB2 , 13 - 14
Optional SUB999 OWS 4
Zone Splitter Board
Speaker zone 1 output + #1 -
Speaker zone 2 output + #2 -
Speaker zone 3 output + #3 -
Speaker zone 4 output + #4 -
Note: Up to 12 x SUB999 Zone Splitter Boards10 can be added to the OWS depending on the available
space. The above table shows the outputs and terminals for one splitter board.
8Display board and decal label used in OWS interfaced to CIE is slightly different.
9SUB999 is a replacement for the previous version SUB862.
10 12 x SUB999 zone splitter board valid only with SUB860 software V2.0

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3.3 OWS Main Control Board SUB860
The PCB layout of the OWS main control board is shown in Figure 3 and terminals description is shown
in Table 4. The physical picture of the main OWS control board SUB860 with 120W amplifier board
SUB866 mounted on top is shown in Figure 4.
Figure 3 OWS Main Control Board Layout
The display board SUB925 is mounted behind the decal label on the front face plate of the standalone
OWS series and connected to the main board SUB860 via a 20 way ribbon cable.
The connection diagrams of the main control board connected to different amplifiers is shown in Chapter
5 “BLOCK Wiring Diagrams” page 23.
3.3.1 OWS Tones and Messages
The standard format of the OWS provides T3 evacuation tone and message in alarm conditions. The
alert tone / message can be activated manually from the OWS Front Display. Alternatively, it can in auto
mode be configured to activate the alert tone / message followed by T3 (or AS2220) evacuation tone /
message after a pre-set time delay. When used in NZ, the DIP switch S6 must be in the ON position to
provide AS2220.1 tone as required by NZS5412. The pattern, frequency and time of each tone are
described in Table 3 below. The standard evacuation and alert Messages are also shown in the same
table.