Brooks BOWS020W, Operation & Technical Manual

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OWS Standalone Manual
MA380 - Rev. 2.4
5

Speaker output can be split into a max of 48 individual speaker circuits
3
. 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 selection 4
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
3
48 Speaker circuits valid only with SUB860 software V2.0
4 Multiple zone selection requires 4 zone splitter board (SUB999)