Brooks BOWS020W, Operation & Technical Manual

Page: 8 / 33

OWS Standalone Manual
MA380 - Rev. 2.4
7
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 mode 5
In manual mode; alert, evacuations or PA can be selected manually
6
.
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 microphone 7 . 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.
6 If 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.
7 Brooks desk top microphone provides direct connection of BGM source via built-in audio socket.