Atkinson Dynamics AD-27 Specifikace stáhnout pdf (Strana 5)

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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5and6.)

 NormallyopenfootswitchescanalsobeconnectedtotheRemote

Controllineandgroundinordertoallow“handsfree”operationofthe

listen/talkfunctions.

CALLBUTTONANDCALLDRYCONTACTSTOEXTERNALDE-

VICE:

 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.Depressingthecallbuttonalsoclosesanormallyopendrycon-

tactratedat0.4amps@125Vacor1.25amps@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gure7.)

CAUTION

The call signal is substantially louder than normal voice mes-

sagesbeingcarriedontheline.Donotdepressthecallswitch

while carrying on a conversation with someone on the system.

This will subject the listener to very loud sound levels.

24Vdc:

 TheAD-28LD-MViscapableofsendingDCpowertoanotherunit

thatismountedinaremotelocationwithoutlocalpower.24Vdcis

availablefrompositions6and7ofterminalblockJ7.Itcanberun

alongwiththesignallinestoanintercominaremotelocation.Only

one unit should share the power supply of another unit in any instal-

lation.Figure8inthewiringdiagramssectionshowshowtwointer-

comscanbehookedupifnoremotepowerisavailable.

CAUTION

Ifanintercomisintendedtoberunoffofaseparate24Vdc

supply,theoutputmustbelimitedto24Vdc,760mAoutput.

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Atkinson Dynamics AD-27 Specifikace Strana 5