gefran TPD32-EV-...-4B - Page 179

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aconsequence,thevalueoftheeldcurrentwillbedeterminedbythischaracteristic
(seeFlux/ifcurveparagraph5.3.7).
Reset ux / if CommandfortheresetoftheuxcurvesetviacommandSet ux / if.
 WiththiscommandtheMotor nom ux parameterwillbeagainlinearlychanged
throughFlux current max/Flux reference.(seeFlux/ifcurveparagraph5.3.7)
Nom ux curr RatedcurrentI
FN
oftheeldregulator.Inordertoimprovethebehaviouroftheregula-
tion,themaximumeldcurrentcanbereducedbysettingtheS14dip-switches(onthe
regulationboard,seetable2.4.3.2).
Example
Armature: 500VDC  Field:  230VDC
    102ADC    0.8ADC
Drivetype: TPD32-EV-500/...-140...
(Fieldcurrentsetto14Amps=default)
 SetthedipswitchesS14todecreasetheeldcurrentfromthedrivesupplied,asbelow:
Switch ohms
168.5Ohm 333Ohm 182Ohm 36.4Ohm 845Ohm 1668Ohm
Equivalent
resistance
Nom ux curr S14-1 S14-2 S14-3 S14-4 S14-5 S14-6
1.0 A
OFF OFF OFF OFF OFF ON 1668Ohm
GD6111g
Set Nom ux curr parameterto0.8.
Motor nom ux RatedeldcurrentI
FN
oftheconnectedmotor.
FC limit ramp WhenusingtheTPD32EV-FC,youcanaddaramptimeatthecurrentlimitsofthe
armaturetoachievebestcontrolofarmaturecurrentduringreversalofthebridgefrom
“positive”to“negative”(andviceversa).
 IfEnabled,afterswitchingoftheSCRbridge,thesettingusedforthearmaturecurrent
limitis1%ofthecurrentsetting.Thislimitwillgraduallybesetto100%basedonthe
ramptimespeciedintheFC lmt ramp timeparameter.
FC lmt ramp time Ramptimevaluerelativetochangeinarmaturecurrentfrom0to100%.