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  9. GSI Group SCR Series User manual

GSI Group SCR Series User manual

NetworkSeriesSCR
BoardSetup Instructions
Instruction
Manual
PNEG-1346
Date:9-14-2006
PNEG-1346
2PNEG-1346
ItisrelativelyeasytocalibratetheSCRDriveBoardandissomethingthat shouldbecheckedperiodically,particularlybeforethe
startof thedryingseasonandalsoasapreventivemeasure.
TherearefoursettingsontheSCRDriveBoard:
IR-IRcompensation.“I”representscurrent(amps)and“R”representstheamountof resistance (Ohms).Thissettingfinetunes
the“curve”of voltageoutputacross the0to100% rangeof settings.
CL -CurrentLimiter.Setsthemaximumcurrentinampsallowed.
Maximum -Setsmax.voltageoutputwhenmeterrollsaresetto100%.
Minimum -Setsmin.voltageoutputwhenmeterrollsaresetto0%.
IRadjustmentpot.
Setto10o’clock
position.
SCRboardIR&CLadjustmentlocations. *Beforestartingthecalibrationprocedureit is
importanttochecktheIRand CLpotentiometers.
Thephotoontheleftshowsthelocationofthese
potentiometers.
Thesetwosettingsarealwaysthesame:
IR -Thepointerontheadjustmentpot. should
besettothe 10 o’clockposition (see photoat
bottomleftof thispage).
CL -Thepointerontheadjustmentpot.should
besettothe 4o’clockposition (see photoat
bottomleftof thispage).
IfthesesettingsarenotcorrecttheSCRmotor
maystall beforeit should,itcouldblowfuses,or
it maybeimpossibletocalibratetheSCRDrive
Board.Forexample,youmayhavethe5% set-
tingrightandfindthatthe100% settingiswrong,
soyoucorrectthe100%settinganditthrows off
the5% settingandsoon.
CLadjustmentpot.
Setto4o’clock
position.
3PNEG-1346
SCR boardterminalsandmin./max.adjustmentlocations.
+12SIGCOML1L2A+A-
MIN
MAX
*TerminalsL1andL2arethe
inputterminals.Whentheun-
loadsystemisturnedonthere
shouldbe220VoltsACacross
theseterminals.
*TerminalsA+andA-arethe
outputterminals.Thevoltage
across theseterminalsis DC
andwill varydependingon
wherethespeedcontrolpo-
tentiometerisset.
*Theitemcircledat thetop
of theSCRboardinthepho-
tographistheminimumset
potentiometer.Thiswillbe
usedintheSCRboardsetup
tosetminimumDCvoltage.
*Theitemcircledat thebot-
tomof theSCRboardinthe
photographisthemaximum
set potentiometer.Thiswillbe
usedintheSCRboardsetup
tosetmaximumDCvoltage.
RESISTOR
IMPORTANT:Afterthenewboardhasbeeninstalledbesuretoremovetheresistor(showninthe
photographabove)fromtheoldboardandinstall itinthenewboard.Justpulltheresistorfromthetwo
pinsocketand install inthesamesocketonthenewboard.
Resistorfor1/3Hp
MeterRoll motors
usedon12 ftdryers
andshorter.(partno.
D03-0039)
Resistorfor3/4Hp
MeterRoll motors
usedon14 ftdryers
andlonger. (partno.
D33-0001)
4PNEG-1346
A+
A-
MAX
1.Atthemeterroll settingsscreenon thedisplaysettheHigh to1000 and the
Lowto50.(Note:Pressing themeterroll speedcontrolknobtogglesbetween
high and lowsettings,and turning theknobwill adjustthesettings).
SettingSCRboardmaximumvoltage.
redmeter
probe
blackmeter
probe
Beforestarting theproceduresetthedryerup asfollows:
1.All fanand heaterswitchestooffposition and loadswitchtooffposition.
2.Controlpowertoon position.
3.Pushthedryerpowerswitch(makesurethattheswitchbutton lights).
4.Moisturecontrolswitchtoon position.
5.Dryermodeswitchtocont.flowposition.
6. Unloadswitchto2speedposition.
MoistureControl
Switch
Unload
Switch
MeterRollSpeedControl
Potentiometer
DryingModeSwitch
Controlpanelswitchlocations.
5PNEG-1346
A+ A-
MIN
redmeter
probe blackmeter
probe
SettingSCRboardminimumvoltage.
1. SwitchtheMoistureControlSwitchbacktotheon position. Thiswill putthemeterroll rotation speedatthelow
setting.
2.Useavoltmetersetatthe20 voltDCrangeand probeterminalA+withtheredvoltmeterprobeand A-withthe
blackvoltmeterprobe.Useasmall screwdriverand adjusttheminsetpotentiometeruntil thevoltageis9VDC.
2. SwitchtheMoistureControlSwitchtotheoff position. Thiswill putthemeterroll rotation speedatthehigh
setting.
3.Useavoltmetersetatthe200 voltDCrangeand probeterminalA+withtheredvoltmeterprobeand A-with
theblackvoltmeterprobe. If thedisplayon yourvoltmeterreads180 voltsDCno maximumadjustmentisneeded.If
yourvoltmeterdoesnotread180 VDC,thenuseasmall screwdriverand adjustthemaxsetpotentiometeruntil the
voltageis180 VDC.
IMPORTANT: Aftersetting theminimumand maximumvoltagesitisrecommendedthatthecalibration procedure
berepeatedafewmoretimesinordertoensureamoreaccuratecalibration.
TheSCR boardisnowsetand dryerisready fornormaloperation atdesiredsettings.
ThisEquipmentshall be installed inaccordance
withthe currentinstallation codesand applicable
regulationswhich shouldbe carefullyfollowed in
all cases.Authoritieshaving jurisdiction shouldbe
consulted beforeinstallation occurs.
Copyright©2006byTheGSIGroup
PrintedintheUSA
TheGSIGroup,Inc.
1004 E.IllinoisSt.
Assumption,IL62510-0020
Phone:217-226-4421
Fax:217-226-4420
e-mail:gsisales@grainsystems.com
internet:http://www.grainsystems.com

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