Nord Drivesystems NORDAC FLEX SK 205E Series - Page 149

5 Parameter
BU 0200 en-3118 149
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P208
Stator resistance
(Stator resistance)
S P
0.00 ... 300.00 W
{ see information }
Motor stator resistance ⇒
resistance of a phase winding with a DC motor.
Has a direct influence on the current control of the FI. Too high a value will lead to a possible
overcurrent; too low a value to a motor torque that is too low.
The parameter P220 can be used for simple measurement. Parameter P208 can be used for
manual setting or as information about the result of an automatic measurement.
NOTE:
For optimum functioning of the current vector control, the stator re
sistance must be automatically
measured by the FI.
Information
Default setting
The default setting is dependent upon the FI nominal power and the setting in P200.
Pos: 34 3 /Anlei tung en/El ektr onik/FU und Star ter/5 . Par ameter/ Par ameter aufli stung (P000 .. .)/P2 00-P2 99/Par amet er P209 – Leerlaufstrom @ 0\mod_1327589796537_388.docx @ 8068 @ @ 1
P209
No load current
(No load current)
S P
0.0 ... 1000.0 A
{ see information }
This value is always calculated automatically from the motor data if there is a change in the
parameter >cos ϕ< P206 and the parameter >Nominal current< P203.
NOTE: If the value is to be entered directly, then it must be set as the last motor data. This is
the only way to ensure that the value will not be overwritten.
Information
Default setting
The default setting is dependent upon the FI nominal power and the setting in P200.
Pos: 34 4 /Anlei tung en/El ektr onik/FU und Star ter/5 . Par amet er/ Par amet erau fli st ung (P 000 .. .)/P 200- P299 /Par amet er P210 – Sta tischer Boost @ 0\mod_1327590156790_388.docx @ 8094 @ @ 1
P210
Static boost
(Static boost)
S P
0 ... 400 %
{ 100 }
The static boost affects the current that generates the magnetic field. This is equivalent to the no
load current of the respective motor and is therefore load-independent
. The no load current is
calculated using the motor data. The factory setting of 100% is sufficient for normal applications.
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P211
Dynamic boost
(Dynamic boost)
S P
0 ... 150 %
{ 100 }
The dynamic boost affects the torque generating current and is therefore a load-dependent
parameter. The factory 100% setting is also sufficient for typical applications.
Too high a value can lead to overcurrent in the FI. Under load therefore, the output voltage will be
raised too sharply. Too low a value will lead to insufficient torque.
Pos: 34 6 /Anlei tung en/El ektr onik/FU und Star ter/5 . Par ameter/ Par ameter aufli stung (P000 ...) /P2 00-P2 99/Par amet er P211 / P212 – Inf orma tio n U/ f - Kennlinie @ 2\mod_1347351841929_388.docx @ 44896 @ @ 1
Information
V/f characteristic curve
With certain applications, particularly those with high centrifugal mass (e.g. fan drives), it may be
necessary to control the motor with the aid of a U/f characteristic. In order to do this, parameters
P211 and P212 must each be set to 0%.
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