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AVAC

VOICE ALARM SYSTEM

Installation and

Maintenance Manual

Message Store

paging

active

fire

microphone

supply

present

Silence internal

Sounder

evacuation alert

test

message fault

mains

fault

psu

fault

microphone

fault

system

fault

general

fault

slave

fault

A

fault

B

fault

standby

fault

speaker A

fault

speaker B

fault

Amplifier & Speaker faults

Designed to comply with BS5839 : Part 8 : 1998

& EN 60849 : 1998

AVAC

- Life Safety Voice Alarm System

Approved Document No. DAU0000402 Rev 6

ALWAYS make sure the end of line devices (supplied) are fitted after the last loudspeaker.
If they are not, calibration may succeed but loudspeaker circuit faults will not be detected.

ALWAYS measure the speaker circuit loads using a Loadmaster or LCR meter before calibration.
The max. load for each circuit is 60 watts, which is equivalent to a min. impedance of 166 ohms..
DO NOT use a multimeter as the results will be meaningless.

The most common installation problem on voice alarm systems is loudspeakers being tapped at too high a
wattage and overloading the amplifier which causes clipping of the monitoring tone signal.

www.acornfiresecurity.com

www.acornfiresecurity.com

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Содержание AVAC

Страница 1: ...No DAU0000402 Rev 6 ALWAYS make sure the end of line devices supplied are fitted after the last loudspeaker If they are not calibration may succeed but loudspeaker circuit faults will not be detected ALWAYSmeasurethespeakercircuitloadsusingaLoadmasterorLCRmeterbeforecalibration Themax loadforeachcircuitis60watts whichisequivalenttoamin impedanceof166ohms DONOTuse a multimeter as the results will b...

Страница 2: ...g AVAC 10 Connecting the panel 12 Mains wiring and connection details 13 Standby battery connection 14 Loudspeaker connection 15 Calibrating the Loudspeaker Fire Mic and Master to Slave circuits 16 Fire alarm interface connection 17 Emergency fire microphone connection 18 Public address paging connection 20 Background music connection 21 Class change timer connection 22 Slave AVAC wiring 23 Digita...

Страница 3: ...case he or she has any special requirements We recommend you read BS 5839 Part 8 1998 The code of practice for the design installation servicing of voice alarm systems and BS EN 60849 1998 Sound systems for emergency purposes or any subsequent revisions both of which are available at your local reference library or from the British Standards Institute Customer Services Dept 389 Chiswick High Road ...

Страница 4: ...cument No DAU0000402 Rev 6 Page 4 SHORT FORM WIRING INSTRUCTIONS P23 P23 P23 P24 25 P23 4 P22 AVAC connected to an Apollo analogue fire alarm loop Circled numbers i e refer to the pages you should read for further information www acornfiresecurity com www acornfiresecurity com ...

Страница 5: ...la ve daisychain AVAC SLA VE AVAC SLA VE AVAC SLA VE Max 10 slav e AVACs per mast er Lou dspeak ers Set messages 230V ac IN P23 24 P23 24 P14 P14 P13 P13 P15 P15 Lou dspeak ers P15 P15 P22 P22 230V ac IN P13 P13 230V ac IN P13 P13 Bat ter ies P14 P14 Bat ter ies P14 P14 Lou dspeak ers P15 P15 back round av e back round fr P22 P22 Cal ibra te P16 P16 Masterto sla ve daisychain P22 P22 Masterto sla ...

Страница 6: ...output allowing the connection of up to 10 slave AVACs Slave AVACs are typically used to extend loudspeaker coverage in areas such as warehouses They also allow greater flexibility in the segregation of public address paging and background music distribution as they have their own paging and background music inputs The fact that multiple AVACs and slaves can be connected to one fire detection syst...

Страница 7: ... applied to them if an external voltage is not available a local 24 V d c output is provided for switching into the inputs under the control of the fire detection system All inputs are prioritised according to the messages they trigger and can be set for latching or non latching operation via an internal link When set to latch required by BS 5839 8 triggered messages will play continuously until a...

Страница 8: ...a fire has been reported and to warn people if appropriate not to use the building s lifts Amplifier and speaker circuits AVAC is supplied with a minimum of two separate 60 watt Class D amplifiers A and B These are designed to drive two loudspeaker circuits each of which will accommodate up to 60 watts of loudspeaker load through 100 V line transformers which step up the voltage for distribution a...

Страница 9: ...d be fixed tidily to the relevant terminals For an overview of the connections required for the fire alarm interface loudspeakers emergency microphone paging background music equipment and slave AVACs please refer to the relevant sections later in this manual see Contents page 2 Note that correct cable glanding is essential and due regard should be paid to any system specifications which demand a ...

Страница 10: ...ound connection to safety earth e g a radiator To remove the lid Undo the two screws on the right hand side of the AVAC using the Allen key provided Hinge the lid 180 to the left and remove the lid earth strap from the base earth connection take care not to overbend the hinges Disconnect the lid base connecting cables PL6 and PL5 from the Main PCB Take care to depress the telecoms style locking ta...

Страница 11: ... see diagram below fix the base securely onto into the wall The mounting holes are suitable for use with No 8 10 or 4 5mm countersunk screws Assess the condition and construction of the wall and use a suitable screw fixing Any dust or swarf created during the fixing process must be kept out of the enclosure and great care must be taken not to damage any wiring or components Internal view of the ba...

Страница 12: ... equipment loudspeakers emergency microphone paging panels background music sources etc to ensure they are correctly fitted and that cable integrity is verified throughout the installation It is essential that the wiring and loudspeakers are tested with a Loadmaster or LCR meter to ensure that the total load connected to each of the loudspeaker circuits is not greater than 60 watts not less than 1...

Страница 13: ...STRIBUTION BOARD AVAC PSU EARTH STRAPS DO NOT operate AVAC without its earth straps connected in this exact configuration The PSU earth strap connects the power supply PCB to the chassis earth post which in turn is connected to the base earth post HAZARDOUS VOLTAGES PRESENT LIGHT When lit red hazardous voltages are present on the components in the hatched area of the PCB and this charge is only bl...

Страница 14: ...m below The battery leads and link wire are provided in the accessory pack A sophisticated battery monitoring unit protects the batteries against deep discharge by acti vating a cut off circuit when the stand by supply voltage reaches 21 V approx If batteries are not fitted are discharged or in poor condition a PSU fault will show at the AVAC Always dispose of used batteries according to the batte...

Страница 15: ... ohms 334 ohms 10 000 334 29 94 Therefore P 30 watts An end of line module EOL provided in the accessory pack must be physically secured and connected across the terminals of the last loudspeaker to allow the wiring to be monitored for open or short circuit fault conditions In order to check that the loudspeaker line monitoring is operating correctly fit the EOL in an accessible location We recomm...

Страница 16: ...ms 3 The Fire Mic s PTT input is in an untriggered state i e only the 6k8 end of line is present If calibration is done with the Fire Mic s PTT input in a triggered state AVAC will calibrate the Fire Mic circuit incorrectly and the Fire Mic may not work as expected 4 The PLK2 Local Fault link has been temporarily removed from ALL slave AVACs Note you MUST refit the PLK2 Local Fault links to all sl...

Страница 17: ...shown The I O units should be programmed via the fire panel s own programming software to operate as appropriate To meet BS 5839 8 the I O units should be mounted adjacent to the Master AVAC s such that they can be consid ered to be one cabinet When interfacing a conventional fire alarm panel to the conventional interface the M1 Evacuate input is normally triggered via a monitored sounder circuit ...

Страница 18: ...2 1 AVAC MAIN PCB LOOP ISOLATOR LOOP ISOLATOR Interfacing an Apollo protocol analogue panel to the AVAC s analogue interface 1 1000000 2 0100000 3 1100000 4 0010000 5 1010000 6 0110000 7 1110000 8 0001000 9 1001000 10 0101000 11 1101000 12 0011000 13 1011000 14 0111000 15 1111000 16 0000100 17 1000100 18 0100100 19 1100100 20 0010100 21 1010100 22 0110100 23 1110100 24 0001100 25 1001100 26 010110...

Страница 19: ...level control until you are satisfied with the sound quality and the limit LED flickers red only very occasionally Failure to do so could lead to poor sound quality If the microphone is too loud too quiet or too distorted the master output level of the VA405 may need to be adjusted Refer to the VA405 instructions for details Please note to ensure the microphone is monitored correctly the right han...

Страница 20: ...on will override all relevant background music signals but have no effect on higher priority triggers such as Alert messages Evacuate messages or Emergency Mic broadcasts PTT SIG 0V MAIN PCB 1 Paging Input CAT 5 CABLE CONTINUE DAISYCHAIN TO NEXT AVAC FOR OPTIONAL LARGER AREA PAGING IF REQUIRED PTT SIG 0V MAIN PCB2 Paging Input Local Fault FireMic PLK2 Master Phantom Page PLK3 10 Audio Limit FireMi...

Страница 21: ...etc The simplest way to connect a background music source is via an APL double phono line level outreach plate which can be wall mounted in a location convenient for the user to change CDs etc 0V 24V 0V 24V TO BGM SOURCE IN OUT V GND OUT OUT Belden 8723 screened 2 pair twisted cable Connect screen to 0V at one end only Connect screen to 0V at one end only To further outreach plates if fitted APL O...

Страница 22: ...rogrammable seven day multiple event timer unit These should be connected to the AVAC s BGM input directly or via an outreach plate as shown in the diagram below Refer to to page 21 for additional information on how the BGM input works Class Change timer connection TU16 NC C NO NC C NO NC C NO 230 VAC 50 HZ Tone 5 NC C NO NC C NO Tone 4 Tone 3 Tone 2 Tone 1 Sig Out TPG5 230 VAC 50 HZ To AVAC or pr...

Страница 23: ... 0V V Fire Mic Input PTT SIG 0V Paging Input SIG 0V BGM Input BGM Input To next slave if fitted SLAVE AVAC 0V Go Slave output Local Fault FireMic PLK2 Master Phantom Page PLK3 10 Audio Limit FireMic Page BGM Local Fault FireMic PLK2 Master Phantom Page PLK3 10 FireMic Page BGM Local Fault FireMic PLK2 Master Phantom Page PLK3 10 FireMic Page BGM All emergency microphone broadcasts see page 19 for ...

Страница 24: ...h will issue the relevant control signal Evacuate message selection Listed below are the four Evacuate messages available at the AVAC together with details of the PLK4 option links you need to fit or remove to select them Evacuate message 1 Siren three seconds silence Attention please attention please Fire has been reported in the building Please leave the building immediately by the nearest avail...

Страница 25: ...sages can be globally adjusted using the MP3 player s volume control which is located on the digital message store PCB as shown below Alert message selection Two Alert messages are available The actual message played will depend on the position of Message Link 2 as shown in the diagrams below Note altering the position of Message Link 2 will also affect the content of the Evacuate message describe...

Страница 26: ...eset button SW2 on the indicator PCB inside the panel If the fault reoccurs the Main PCB may be faulty See also section 1 2 page 28 General fault Flashes when there is a fault on any part of the voice alarm system This light is always lit in tandem with at least one other fault light which will convey more precise information on the type of fault detected Message fault this indicator does not appe...

Страница 27: ...eck the Power Supply PCB and Main Control PCB for signs of dam age If none is found replace the fuse with the correct type ensuring that the fuse clip is not damaged when re inserting the fuse d Refit the Main PCB and reconnect the batteries If the green Supply Present light is lit reconnect the mains supply and check that the power supply fault has cleared If the Supply Present light is not lit e...

Страница 28: ...LD or the AVAC contact your supplier for assistance If the fault lies with the external wiring there may be several causes First refit the EOLDs at the end of line 1 The Loudspeaker circuit may be overloaded The absolute maximum loading for each amplifier module is 60 watts not less than167 ohms at 1 KHz If this is exceeded the amplifier will shut down as announcements are made or audio is played ...

Страница 29: ...C as speaker faults Note that the Speaker Fault A and Speaker Fault B indicators will also illuminate for open and or short circuit faults To ascertain if there is an earth fault open the AVAC and check to see if the Speaker Earth Fault A or B indicators on the main PCB are lit Amplifier faults occur on the system but when reset they do not reoccur for some con siderable time An audio input which ...

Страница 30: ...is provided for you to record the number type location and tapping of each loudspeaker on the AVAC s circuits On heavily populated systems you may wish to make multiple photocopies of this page before using it SPEAKER LOUDSPEAKER SPEAKER AVAC AVAC ADDITIONAL TYPE LOCATION TAPPING LOCATION CIRCUIT COMMENTS www acornfiresecurity com www acornfiresecurity com ...

Страница 31: ...ord sheet DAU0000407 is provided in the accessory pack supplied We strongly recommend the relevant side of this sheet master or slave is completed by the engineer for future reference Should you experience any technical problems wih AVAC our technical department will require information from this sheet in order to assist you www acornfiresecurity com www acornfiresecurity com ...

Страница 32: ... RMS 1 kHz tone with gain adjust set to Max sensitivity BGM 230 mV RMS BGM with link 2 3 V RMS Page 230 mV RMS Page with link 2 3 V RMS Fire Mic input 230 mV RMS Page PTT Volt Free contacts non triggered state Open circuit Page PTT Volt Free contacts triggered state Closed circuit Fire Mic PTT non triggered state 6K8 Fire Mic PTT triggered state 1K in parallel with 6K8 Manual inputs M1 M2 M3 RES 1...

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