klaxon Nexus 120 DC Sounder and Sounder-Beacon Instruction Manual
- October 30, 2023
- KLAXON
Table of Contents
klaxon Nexus 120 DC Sounder and Sounder-Beacon
Product Information: Nexus 120 DC Sounder & Sounder-Beacon
The Nexus 120 DC Sounder & Sounder-Beacon is a sounder and beacon unit used for alarm signaling in commercial and industrial settings. The product has different tone types and peak sound levels, which can be selected using dip switches. It has a sounder current of up to 550 mA and operates at 24V DC. The unit has separate wiring terminals for the sounder and beacon, and each terminal is duplicated for easy daisy-chain connection of multiple units. The product is designed to meet EN54-3:2001+A1:2002+A2:2006 Sub clause standards for operational performance, durability, and other essential characteristics.
Product Usage Instructions
- Installation: To install the sounder, first mount the base unit and make the external wiring connections to the base. The head unit will automatically connect when it is attached to the base. Note that the head only fits onto the base one way around. If a beacon is fitted, care should be taken when mounting the base to ensure that the beacon will be positioned in the desired orientation after the sounder is attached.
- Wiring: The sounder and beacon have separate wiring terminals. Each terminal is duplicated to enable simple daisy-chain connection of multiple units. The wiring terminals are marked as follows:
- Sounder Positive Supply (10 to 60V DC): +
- Sounder Negative Supply (0V): –
- 2nd Stage Alarm Control (Connect to 0V to activate): S2
- 3rd Stage Alarm Control (Connect to 0V to activate): S3
- Beacon Positive Supply (10 to 60V DC): +
- Beacon Negative Supply (0V): –
- Controls: The first and second stage alarm tones are independently set using 6-way dipswitches S1 and S2 respectively. The required settings are shown in the table overleaf. The third stage alarm tone is pre-set to complement the selected first stage tone as shown in the table.
Installation Instructions
EN54-3:2001+A1
Fire Alarm Device – Sounder
Type B: For indoor or outdoor use
PNS-0005/PNC-0003/04/22/55/57/35/39/59/60/61
Technical Data: Document 18-186530
Texecom Ltd (Incorporating Klaxon Signals)
St Crispin Way, Haslingden, BB4 4PW, UK
Tel: +44 (0)1706 233879
(June 2013) 18-186460-9
Copyright © Texecom Ltd
email: sales@klaxonsignals.com
www.klaxonsignals.com
| Type | CPR Reference |
|---|---|
| PNC-0035 | Reference 0832-CPR-0621 |
| PNC-0003 | Reference 0832-CPR-0622 |
| PNS-0005 | Reference 0832-CPR-0623 |
0832-CPD-0621 (Sounder-LED Beacon)
0832-CPD-0622 (Sounder-Xenon Beacon)
0832-CPD-0623 (Sounder)
Declared Performance
Essential Characteristics| EN54-3:2001+A1:2002+A2:2006 Sub clause
Reproducibility| 5.2
Operational performance| 5.3
Durability| 5.4
Dry Heat (operational)| 5.5
Dry Heat (endurance)| 5.6
Cold (operational)| 5.7
Damp heat, cyclic (operational)| 5.8
Damp heat, steady state (endurance)| 5.9
Damp Heat, cyclic (endurance)| 5.10
SO2 corrosion (endurance)| 5.11
Shock (operational)| 5.12
Impact (operational)| 5.13
Vibration (operational)| 5.14
Vibration (endurance)| 5.15
Electrostatic discharge (operational)| 5.16
Radiated electromagnetic fields (operational)| 5.16
Voltage transients, fast transient bursts (operational)| 5.16
Enclosure Protection| 5.17
Installation
-
The sounder is installed by first mounting the base unit and making the external wring connections to the base. The head unit then automatically connects when it is attached to the base.
-
The sounder head is separated from the base by unlocking the four ¼-turn fasteners in the corners of the sounder.
(Recommended screwdriver: Philips No. 2, min 100mm long). -
Note that the head only fits onto the base one way around. If a beacon is fitted, care should be taken when mounting the base to ensure that the beacon will be positioned in the desired orientation after the sounder is attached
Wiring
The sounder and beacon have separate wiring terminals. Each terminal is duplicated to enable simple ‘daisy-chain’ connection of multiple units.
| Line | Terminal Marking |
|---|---|
| Sounder Positive Supply (10 to 60V DC) | + |
| Sounder Negative Supply (0V) | – |
| 2nd Stage Alarm Control (Connect to 0V to activate) | S2 |
| 3rd Stage Alarm Control (Connect to 0V to activate) | S3 |
| Beacon Positive Supply (10 to 60V DC) | +
Beacon Negative Supply (0V)| 
–
Controls
-
Tone Selection
The first and second stage alarm tones are independently set using 6- way dipswitches S1 and S2 respectively. The required settings are shown in the table overleaf. The third stage alarm tone is pre-set to complement the selected first stage tone as shown in the table. -
Volume Control
The sound output of the unit can be reduced by up to 20dBA by adjusting the potentiometer. -
Beacon Flash Controls (If fitted)
The flash mode of the beacon can be altered using the 2-way dipswitch marked
XENON BEACON LED BEACON
Switch| Off| On| Off| On
1| 60 flashes per min| 30 flashes per min| Single Flash| Double Flash
2| Single Flash| Double Flash| Flashing| Static
Technical Specification:
Supply Voltage Range …………….10-60V DC
Current – Sounder …………………. 0.12-0.55A (Typ. 0.5A @ 24V, Tone 2)
Current – Xenon Beacon ………… 350mA peak @ 24V DC
(Where Fitted) (60 single flashes per min.)
700mA peak @ 12V DC
(60 single flashes per min.)
Current – LED Beacon ……………. 18mA (Flashing)
(Where Fitted) ……………………….. 65mA (Static)
Peak Sound Level …………………..110-120 dBA at 1m
(Typ. 120dBA @ 24V, Tone 2)
Number of Tones …………………… 64
Volume Control ……………………… 20dBA typical
Remote Tone Switching …………..Provision for 3 alarm stages
(Negative voltage activation)
Operating Temperature …………… – 25°C to +70°C
Casing………………………………….. High Impact Polycarbonate/ABS
IP Rating ………………………………. IP66
Synchronization …………………….. Automatic with Klaxon Nexus and
Sonos Sounders
- depends on selected tone and input voltage. See tone table for details.
EN54-3 certified on tones 1,2,3,6,7 & 13 & > 17V DC only.
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