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EVAC50W24V-A

50W 24V Amplifier

The Pertronic 50W Amplifier (EVAC50W24V-A) is an evacuation amplifier with integral evacuation tone and message generator with fault detection. It is designed for use in emergency warning systems with supervised 100V-Line audio distribution. The amplifier delivers up to 50 Watts of audio power to the 100V-Line.

The EVAC50W24V-A is capable of generating up to three pre-configured tones. An optional pre-amplifier provides local microphone and remote audio inputs.

Each of the amplifier’s three tones can be selected from 47 available options. The factory default tones are: An ISO 8201-compliant Evacuation tone (with verbal message); an Alert tone as specified in AS 2220 (with verbal message); and a Simulated Bell tone. The third tone provides for non-emergency applications. For example, in a school, the third tone may signal start and finish times for classes.

There are three methods of controlling tone output from the amplifier:

I. The external RS-485 bus from any Pertronic analogue addressable fire alarm panel activates any one of the three pre-configured tones

II. Switch or relay contacts connected to the amplifier’s TONE CONTROL inputs are able to activate any one of the three pre-configured tones

III. A positive dc voltage applied to the amplifier’s BELL input activates one selected tone

An optional microphone pre-amplifier provides a local microphone input (MIC) and press to talk (PTT) control. The PTT may be configured to silence the integral tone generator. Alternatively, the tone generator may be configured to over-ride the MIC and PTT inputs. The pre-amplifier also has a line level input for connecting an external audio source.

When not broadcasting audio, the amplifier continuously checks for faults on the 100 Vrms line by driving a small DC current through the output wiring, which must be correctly terminated with an end of line resistor. It is important to note that every speaker connected to the supervised 100 V-Line must incorporate a DC-blocking capacitor.

Features

• Default ‘Alert’ and ‘Evacuation’ tones with verbal messages as in AS2220 and ISO8201 (T3)
• Each of the amplifier’s 3 tones may be chosen from 47 available options, configurable using on-board rotary and DIP switches
• Verbal message duration: up to 20 seconds
• Delivers up to 50 W to connected speakers
• Optional pre-amplifier suitable for public address microphone or fire microphone
• Operates from 24 Volt (nominal) DC power
• Controllable by panel RS485 bus, TONE CONTROL inputs, or BELL input
• Overload and short-circuit output protection
• Fault LED displays a pattern of short and long flashes to identify any faults that have been detected
• Supervisory system operates when not broadcasting audio and can detect:
• Short and open-circuits on the 100V-Line
• Power supply faults
• Overload conditions
• Low power output
• RS-485 communication faults
• Missing pre-amp (if appropriate) Custom tones and/or messages available on special order

Tones

Tone 01	AS2220 Evac Tone with Evac Message	Tone 26	1.4 kHz - 1.6kHz 2Hz
Tone 02	AS2220 Evac Tone	Tone 27	660Hz - continuous
Tone 03	Alert Tone with Alert Message	Tone 28	544Hz / 440 Hz - alternating
Tone 04	Alert Tone	Tone 29	544 @ 0.875 s - intermittent
Tone 05	T3 Cadence with Evac Message	Tone 30	800Hz @ 2 Hz - intermittent
Tone 06	T3 Cadence	Tone 31	800 / 1000Hz @ 25 Hz - sweeping
Tone 07	Simulated Bell Tone	Tone 32	2400 / 2900 @ 25 Hz - sweeping
Tone 08	PA400 Tone	Tone 33	554 Hz - continuous
Tone 09	Claxon (Star Trek)	Tone 34	440 Hz - continuous
Tone 10	400-700 Hz - 1.5 sec whoop	Tone 35	800 / 100 Hz @ 7 Hz- sweeping
Tone 11	800/100 Hz @ 1 Hz sweeping	Tone 36	660 / 1200 Hz @ 1.5 second sweep
Tone 12	400/450Hz @ 0.5 Hz tone	Tone 37	Two-Tone Chime 1000/650 Hz
Tone 13	2400/2900Hz 7 Hz - sweeping	Tone 38	745Hz @ 1Hz - intermittent
Tone 14	2400/2900Hz 1 Hz - sweeping	Tone 39	1000 & 2000Hz @ 0.5s alternating
Tone 15	500/1200Hz @ 1 Hz - sweeping	Tone 40	1000 Hz continuous - PEEER Toxix Gas
Tone 16	1200/500Hz @ 1 Hz - DIN/PFEER	Tone 41	2000 Hz - continuous
Tone 17	2400/2900Hz @ 2 Hz alternating	Tone 42	1200 Hz - continuous
Tone 18	1000 Hz @ 1Hz - intermittent	Tone 43	800 Hz/1000 Hz @ 4 Hz alternating
Tone 19	800/1000Hz @ 0.875 Hz - alternating	Tone 44	RH3 Tone 500 Hz –1400 Hz @ 5 Hz repetition
Tone 20	2400 Hz @ 1 Hz intermittent	Tone 45	'SOS' in Morse code
Tone 21	800Hz 0.25 s on, 1s off - intermittent	Tone 46	300 Hz - 1400 Hz - 300 Hz Sweep
Tone 22	800Hz - continuous	Tone 47	3480 Hz 130 ms on/off
Tone 23	660Hz 150mS on, 150mS off - intermittent
Tone 24	544 (100mS) / 440 Hz(400mS) - NF S 32-001
Tone 25	660 Hz 1.8s on, 1.8s off - intermittent

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