Atkinson Dynamics AD-27 Especificaciones descargar pdf (Pagina 4)

To conﬁgure an intercom in the Slave mode, perform the following steps:

Disconnectpowertotheintercombeforeanyinstallation,maintenance,or

conﬁguration changes are performed.

1.MovetheJ2jumperontheP.C.boardfromtheMAStoSLAposition(seeFigure6).Thiscan

bedoneusinglongnosepliers,pullingthejumperoffthe“MAS”andcenterpositionandplacing

itonthe“SLA”andcenterposition.

2.AnintercomconguredintheSlavemodeneedstohavetheListen/Talkswitchdefaulttothe

talkpositiononthecoverplate(seeFigure2).

ThesecondchangerequiredistorotatethepositionoftheTalk/Listenswitch.Thiscanbeac‑

complished by loosening the rubber boot covering the toggle switch enough to allow the toggle

switchtoturn180degrees.Thedimpleonthelockingringmustseatitselfinthelocatinghole

(seeFigure3).Therubberbootisthentightenedupagainstthecoverplatewiththetoggleswitch

leaningtothetalkposition,asshowninFigure2.

3. The third change involves the interconnect wiring. When a unit is placed in the Slave mode it

defaultstotheTalkortransmitposition.WhenhookedtoaMasterunititisnecessarytooverride

theSlaveunitinorderfortheMasterunittobeabletotransmit.The#6pin(remotecontrol)on

bothterminalblocks(seeFigure4)mustbeconnectedbetweentheMasterandtheSlaveunit.

Figures 7 to 13 contain wiring diagrams of typical intercom conﬁgurations.

REMOTE CONTROL:

Remotecontrolisusedtochangetheoperationmodeofaremoteintercomfromlistentotalk

orfromtalktolistenuponactivationofalocalintercom.Thewiringdiagramsectionillustrates

Master/SlaveInstallationandUsingFootSwitchesDiagrams.(Seegures9,10,and12).

Normally open foot switches can also be connected to the Remote Control line in order to allow

“handsfree”operationofthelisten/talkfunctions.

CALL BUTTON:

Depressingthecallbuttonsendsa1kHztoneontothesignallines.Allunitslisteningtotheline

will then broadcast this signal as a call.

The call signal is substantially louder than normal voice messages being car‑

riedontheline.Donotdepressthecallswitchwhilecarryingonaconversa‑

tion with someone on the system. This will subject the listener to very loud

sound levels.

The volume of the call signal is affected by the volume control on the receiving unit, so if the

volume is turned all the way down at a receiving station, the call signal will not be heard. To avoid

thisproblem,thecalldrycontactscanbeutilizedtodriveanexternalsignallingdevice.

CALL BUTTON ACTUATED DRY CONTACTS FOR OPERATING AN EXTERNAL

DEVICE:

Depressingthecallbuttonalsoclosesanormallyopendrycontactratedat0.5Aat125Vacor

1.25Aat24Vdc.Thiscontactcanbeusedtotriggeraremotesounderorlightinordertoaccent

thecallfeature.Thewiringdiagramillustrateshowanexternallightorhorncanbewiredinto

augmentthecalltone.(SeeFigure11.)

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Atkinson Dynamics AD-27 Especificaciones Pagina 4