Engineered air EngA W-TRAC User Manual

A W-TRAC
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IOM‐49 6of12 Mar99R4
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CONTROLLERDESCRIPTION
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TERMINALLIST
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Terminal Description
C1 Sensorcommon,and0‐10Vdcresetcommon(‐).
S 0‐10Vdctemperatureresetinput(+).
D Supplyairtemperaturesensorinput.
E Exhaustairtemperaturesensorinput.
A Outsideairtemperaturesensorinput.
RMH 0‐10VdcreturnairRH%input.
EXH 0‐10VdcexhaustairRH%input.
MOD 0‐10Vdcheatwheelcontroloutput(+).
C2 0‐10Vdcheatwheelcontroloutput(‐).
+12 12Vdcoutputpower
+32 32Vdcoutputpower(RH%sensorhot)
T2(N) 24VacNeutralpowerinput.
T1 24VacHotpowerinput.
6 Outputcontactcommon
5 Outputcontactnormallyclosed(N.C.)
4 Outputcontactnormallyopen(N.O.).Startcontact.
P1 Lowoutputpotentiometer(legacy,foroldstyleDCdrivemotors).
P2 Wiperoutputpotentiometer(legacy,foroldstyleDCdrivemotors).
P3 Highoutputpotentiometer(legacy,foroldstyleDCdrivemotors).
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DIPSWITCHES
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W‐TRACconfigurationoptionsareconfiguredbyDIPswitchselectionand/orwiring connections.  These
arefactorysetandshouldnotnormallyneedtobealtered.
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DIPSW Description
BDRHSPEN
‘ON’whenRH%sensingofthereturnairisnotused.W‐TRACwillcontrolbasedon
pre‐definedRH%values.Switchwillbe‘OFF’whensensingactualRH%.
EXRHCTRL ‘ON’whenusingexhaustairRH%sensing.
BDRHCTRL
‘ON’whenRH%sensingofthereturnairisnotused.Switchmustbeinthesame
positionasBDRHSPEN(above).
MANHISPEED* ‘ON’todrivetheoutputtomaximumwheelrotationspeed.
MANLOSPEED* ‘ON’todrivetheoutputtominimumwheelrotationspeed.
*Donotenablebothswitchesatthesametime,orleaveeitherswitch‘on’innormaloperation.
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Engineered air EngA W-TRAC Specifications

General

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