Engineered air EngA W-TRAC User Manual

A W-TRAC


IOM‐49 10of12 Mar99R4



(over50ft.eq.length),theuseofaminimum20gauge‐shieldedwireisrecommended.Theshieldshould
begroundedatthecontrollerendonly,withtheotherendtaped.

Itisimportanttoensurecorrectpolaritywhenwiringintothesystem.

NOTE:Fieldanalogcontrolinputsrequiresignalisolationtopreventgroundloop
signalcorruptionand/ordamagetothecontroller(s).


SERVICENOTES

ROTATION

Mostheatwheelshaveapurgesectiontopurgeexhaustairtrappedinthewheelflutesbeforetheyrotate
tothesupplyairside.Thecorrectwheelrotationdirectionisnotedonthefaceoftheheatwheel.Drive
motorrotationmaybechangedatthemotorwireconnectionsorontheinverterdrivefeedingthemotor
(ifused).

MOTORSPEEDCONTROL

Themodulating0‐10Vdcmotorspeedoutputmaybeconnectedtoavarietyofcontrollersand/or
inverters.Refertotheequipmentwiringdiagramforconnectiondetails.Thefollowingsetupparameters
aretypical.Alwaysrefertotheequipmentfunctionsheetforanychanges.Toensurepropersetup
operation,donothaveDIP4andDIP5onatthesametime.
KBVF/SIVF(R)
TheKBVFinverterdriveandSIVFsignalisolatoraremanufacturedbyKBElectronicsInc.Theinverterand
isolatorinstallationandoperationmanualsareincludedintheinformationpackage,originallylocatedin
themainequipmentelectricalpanel.The0‐10VdcW‐TRACcontroloutputfeedsintotheSIVFsignal
isolatorwhich,inturn,feedsanisolated0‐5VdcsignaltotheKBVFinverterdrive.

HighSpeed

TurnonW‐TRACDIP4toforcetheW‐TRACtomaximumoutput(near10Vdc).Notethatifthe
W‐TRACisoperatinginfrostmodeDIP4willnotallowthedrivetogotofullspeed.Measurethemotor
ampsandconfirmthereadingsarelessthanthemaximummotorampacity.Ifpossible,measureand
confirmtheoutputfrequencyis60Hz.

TheKBVFisfactorysetto100%ofratedfrequency(60Hz)andshouldnotbeadjusted.


Engineered air EngA W-TRAC Specifications

General

Brand	Engineered air
Model	EngA W-TRAC
Category	Controller
Language	English