Federal Signal Corporation ez1 echo Installation Instructions Manual - page 4
ateswhentheintercomisinringmode.AsingleN.O.contactisprovided,ratedat250
volts a.c. / 3 amps. This module is fully encapsulated and an internal fuse protects the
contacts. In the event of a fuse failure, the module must be disconnected and replaced.
This station must be powered from an Echo Central Control. The data/power
issuppliedfromtheCentralControllinecards.Pleaserefertotheinstructionspro-
vided with the Central Control for full operational details of the Echo system.
C. Surface Mounting and Wiring.
TheEZ1ECHOintercomsaredesignedformountingonaflathorizontalor
vertical surface.
1. LoosenthefourM6fixingscrewstoaccessthemountingholes.The
cover opens right to left.
2. MounttheunitthroughthefourcornerM6fixingholeslocatedonthe
lower moulding. Mounting hardware is to be user supplied.
3. RemovethefourM3fixingscrewsandremovetheencapsulationcham-
bercovertogainaccesstothefieldwiringterminalblock.
4. ThelowermouldingissuppliedwiththreeM20cableentriessuitablefor
glandsapprovedExdorExeforconnectionofthefollowingcables:
•
Data/Power(fromCentralControl)
•
ExternalLoudspeaker
•
RelaySwitchedOutput-N.O.contact
5. Atwelve-polescrewterminalsocketblockisprovidedforfieldwiring.
Theseterminalsareratedforthefollowingwireranges:22-12AWG(.5-4mm
2
).
6. Terminate wires as follows:
Terminals1&2-ConnectwirepairforswitchedN.O.relaycontact
(250VAC,3Amax.)
Terminals3&4-Usedforinternalwiringofrelaycoil
Terminals5&6-LinkforHandsetOperation/Removelinkforhands
free operation
Terminals7&8-Linkforsensitivity/Linkincreasesgainonmicro-
phone
Terminals9&10-Connectwirepairfromexternalloudspeaker
Terminal11-Power/Dataline24V-fromcentralcontrol
Terminal12-Power/Dataline24V+fromcentralcontrol
Earth Stud - M6 stud for termination of earth wires
7. RefitencapsulationchambercoverwithM3screws.
8. Refitcoverensuringthatcablesarecorrectlyroutedtoavoiddamageto
conductors. Secure M6 screws to ensure weather-tightness.
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