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Unity DAU

Voice Alarm System

Installation and Maintenance Manual

Revision 1A − June 2005

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Содержание Unity DAU

Страница 1: ...Unity DAU Voice Alarm System Installation and Maintenance Manual Revision 1A June 2005 ...

Страница 2: ...d up the evacuation especially in malls and large airport environments Product Overview Unity has been developed to replace talking sounders in many voice alarm applications and is available in several forms The DAU is a complete VA system in a single wall mount box which is complete with messages fire interface dual 30W monitored amplifiers power supply monitored battery charger and the ability t...

Страница 3: ...wise Operation The Unity DAU is fully automatic in operation the only user controls available once the unit has been commissioned are the front panel Reset and Test buttons Pressing the test button will broadcast the test message to the speaker circuits and latch until the Reset button is pressed The Unity DAU has fully compliant fault monitoring when correctly installed and commissioned if any st...

Страница 4: ...e Music Lights green when the music channel is open no other inputs in use Test This is a recessed push button pressing this starts the test message broadcasting to the speakers Reset This recessed push button cancels any message playing this will not cancel messages triggered from the fire alarm if the trigger is still active the message always plays to the end of the current cycle once Reset Fau...

Страница 5: ...d a site it is essential all units are on the same mains phase as they are classified TEN 230V powering from different phases can mean a 440V potential can be present in a unit during a major fault incident Anti static handling guidelines Make sure that electro static handling precautions are taken immediately before handling PCBs and other static sensitive components Before handling any static se...

Страница 6: ...y Link Lead f Black jumper header to Enable Fire Microphone Monitoring Using the HEX key supplied remove the front cover Verify the following items are present 1 2 off speaker connectors 2 1 off 2 way fault connector 3 2 off 4 way fire interface connectors 4 1 off 8 way fire microphone connector 5 1 off 5 way paging microphone connector 6 1 off 2 way remote volume connector If there are any Items ...

Страница 7: ...d quality cable gland 18 knockouts are provided 8 on the top face from left to right Speaker Network A Speaker Network B Fault Fire alarm Interface Fire Microphone connection Paging Microphone connection and finally music input These glands are repeated on the rear face On the bottom face a single knockout is for the incoming mains this is repeated on the rear mains SHOULD NOT enter the box by any...

Страница 8: ...e connections required for the fire alarm interface loudspeakers fireman s microphone paging background music equipment and slave amplifiers please refer to the relevant sections later in this manual Note that correct cable glanding is essential and due regard should be paid to any system specifications which demand a certain cable type providing it meets the appropriate national wiring regulation...

Страница 9: ...teries are required these will need to be fitted in an external battery enclosure the monitored charger in the Unity DAU is capable of charging and monitoring these batteries Safety Information Sealed Lead acid batteries contain sulphuric acid which can cause burns if exposed to the skin the low internal resistance of these batteries means large currents will flow if they are accidentally short ci...

Страница 10: ...o prevent Shock hazard Speaker Circuits on Unity are DC monitored Suitable speakers for Unity MUST have a thermal fuse to disconnect the speaker if it is in the area in fire and a DC blocking capacitor fitted typically the capacitor is 2 2uF 250V DC The wiring goes through each speaker and in the last speaker the end of line resistor Each circuit can have 2 spurs the DAU is provided with two end o...

Страница 11: ...ogbook Speaker cables must be earthed to the safety earth connection point see earlier in this manual preferred types are screened soft skin cables such as FP200 although MICC can be used Cable Length Chart The following table shows the maximum cable run to achieve a drop of no more than 1dB as required by BS5839 pt 8 the table also takes into account high frequency losses which prevent systems pe...

Страница 12: ...the Au pin is at the bottom of the block The DAU is shipped as standard with the monitoring of the Fire Microphone DISABLED to enable the monitoring fit the jumper supplied in the accessory pack as shown below Link fitted to enable monitoring The level of the Fire Microphone can be independently adjusted using the front panel recessed control marked FIRE MIC the fire microphone is always the top p...

Страница 13: ...sage Once triggered the inputs latch Evacuate always over rides Alert If the alert input is not used simply omit all connections as it is the fire alarm which monitors this link To silence messages the reset connection must have 10 to 33V applied this can be done from a relay which closes on fire panel reset or silence as shown below the fire trigger Alert or Evac must be removed for reset to work...

Страница 14: ...then the relay modules should be glanded to the Unity DAU case note the connections between the relay contacts and the Unity control board will not be monitored so the integrity of this wiring should be mechanically protected again permission from the controlling authorities should be sought before using this arrangement The level of the fire messages can be independently adjusted using the front ...

Страница 15: ...pping of the DAU and corrects for poor microphone technique The UNDM1 provides busy indication and first come first served logic for cascading microphones Unity Microphone connections Using 3 rd Party Microphones Third party microphones can be used with Unity as long as they can provide a volt free Ptt contact and a balanced line level 0dBV audio output A 24V 100mA feed is available on the page co...

Страница 16: ...h BS5839pt8 to preserve battery life The level of the paging microphone can be independently adjusted using the front panel recessed control marked MUSIC NOTE If music is to be broadcast on the Unity DAU an appropriate PRS Licence should be obtained within the UK The level of the music can be remotely adjusted using the Unity VC remote pot this should be wired across the two way header and the dis...

Страница 17: ...dBV Ptt Type 5V to access Power 24V nominal 100mA self resetting fuse Fire Interface Inputs 3 off isolated 12V to 33V Alert Evacuate Reset Outputs 1 Relay open on fault 30V 1A Max Power 24V nominal 100mA self resetting fuse Fire Microphone Audio Sensitivity 0dBV Balanced Line Control Inputs 4 off Monitored triggers PTT MSG1 MSG2 CNCL 1 8V rest 5V active Power 24V nominal 100mA self resetting fuse ...

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