—————— TPD32-EV ——————
490
REG PARAMETERS \ Percent values \ DC Curr PI reg
DCCurrP
847 Float 0 100/CDfactorP
(P839)
0.5
ü
R/W - -
DCCurrI
848 Float 0.0 100/CDfactorI
(P840)
30
ü
R/W - -
DCCurrPbase
849 Float 0.001 Pmax 0.98 *
Pmax(*)
ü
R/Z - -
DCCurrIbase
850 Float 0.01 Imax 0.45*
Imax(*)
ü
R/Z - -
(*)
For calculations performed internally by the congurator
:
Pmax = 360 * (2000 / IPA465) * (2
4
/ 2
15
); Imax = 360 * (2000 / IPA465) / 2
2
* f_vecon / 2
15
).
f_vecon
= 24009,6.
DC curr P Proportionalgain(aspercentageofDC Curr P base) for T current ref =0.
DC Curr I Integralgain(aspercentageofDC Curr I base)forT current ref =0.
DC curr P base Defaultproportionalgaininphysicalunits.
DC Curr I base Defaultintegralgaininphysicalunits.
Parameter No. Format
Value Access via
min max Factory Keyp.
RS485/
BUS/
Opt2-M
Term.
Opt2-A/
PDC
REG PARAMETERS \ In use values
CurrPinuse[%]
845 Float 0.0 100.0 S
ü
R - -
CurrIinuse[%]
846 Float 0.0 100.0 S
ü
R - -
Curr P in use DisplayofproportionalgainofcurrentregulatorinuseasapercentageofDC Curr P
base.
Curr I in use DisplayofintegralgainofcurrentregulatorinuseasapercentageofDC Curr I base.
A2.3 Autotune function of PI current regulator
TheautotuneprocedureforthecurrentregulatorcalculatesthebestgainvaluesforthePIregulator.Theprocedure
canbeusedonlywhenthedriveisconnectedtoahighlyinductiveload.
TheautotuneprocedurecanbelaunchedfromGF_eXpress (ParameterP915Autotuneonthe CURRENT
REGULATORmenu)orfromthekeypadviaAutotuneontheCURRENTREGULATORmenu.Inordertorun
autotune,thecontrolmethodmustbesettoDigital – LocalandtheEnableandStart contactsmustbeclosed.
Whentheprocedureislaunchedfromthekeypad,themessage"Start?"isdisplayedrst.PressEntertostart
theprocedure;pressCANCtoabort.
WhethertheprocedureislaunchedfromthekeypadorfromGF_eXpress,whenrunningitsstatusisdisplayed
onthekeypadandviatheP1526Autotune Statusparameter
Duringnormalrunningofautotuning,thekeypaddisplaysthemessage"Currregtuning"andthevalueofP1526
issetto1(Inprogress).Ifeverythinggoeswell,whentheprocedureendsthekeypaddisplaysthemessages
"Ready"and"Endcurrtune"andparameterP1526issetto2(Success).
TheautotuneprocedurecanbeinterruptedbeforeitendsbypressingtheCANCbuttononthekeypadorfrom
GF_eXpressbyclickingtheDisablebuttonontheControlPanel.
Iftheautotuneproceduredoesnotendcorrectly(dueeithertoerroreventsduringtheprocedureortointerrup-
tioncommandedbytheuser)thePIparametersareresettothevaluespresentbeforetheprocedurewasstarted,
otherwisetheyareoverwrittenwiththenewvaluescalculated.
Inadditiontothemessagesshownaboveregardingcasesinwhichtheprocedurebeginsandendscorrectly,the
keypadmayalsodisplaythefollowingmessages:
"Nocurrent" Thismessageisdisplayedif,duringtheautotuneprocedure,theregulationcannotbe
activatedorifcurrentisnotcalculated(notevenwithaproportionalgainvalueof100%).
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