Nord Drivesystems NORDAC LINK SK250E-FDS

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NORDAC LINK (SK 250E-FDS ... SK 280E-FDS) – Users Manual for Frequency Inverters as Field Distributors

96 BU 0250 en-3021

Pos: 282 /Anleitungen/ Elektronik/F U und Starter/5. Parameter/ Parameterauflis tung (P000 ...)/P200- P299/Parameter P210 – Sta tischer Boost @ 0\mod_132759015 6790_388.docx @ 809 4 @ @ 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.

Pos: 283 /Anleitungen/ Elektronik/F U und Starter/5. Parameter/ Parameterauflis tung (P000 ...)/P200- P299/Parameter P211 – Dy namischer Boost @ 0\mod_1327590 224915_388.doc x @ 8117 @ @ 1

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: 284 /Anleitungen/ Elektronik/F U und Starter/5. Parameter/ Parameterauflis tung (P000 ...)/P200- P299/Parameter P211 / P212 – Information U/f - Kennlinie @ 2\mod_1347 351841929_388.doc x @ 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%.

Pos: 285 /Anleitungen/ Elektronik/F U und Starter/5. Parameter/ Parameterauflis tung (P000 ...)/P200- P299/Parameter P212 – Sc hlupfkompensation @ 0\mod _1327590275572_388.doc x @ 8140 @ @ 1

P212

Slip compensation

(Slip compensation)

S P

0 ... 150%

{ 100 }

The slip compensation increases the output frequency, dependent on load, to keep the

asynchronous motor speed approximately constant.

The factory setting of 100% is optimal when using DC asynchronous motors and correct motor data

has been set.

If several motors (different loads or outputs) are operated with one FI, the slip compensation P212

must be set to 0%. This excludes any negative influences. With PMSM motors, the parameter must

be left at the factory setting.

Pos: 286 /Anleitungen/ Elektronik/F U und Starter/5. Parameter/ Parameterauflis tung (P000 ...)/P200- P299/Parameter P211 / P212 – Information U/f - Kennlinie @ 2\mod_1347 351841929_388.doc x @ 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%.

Pos: 287 /Anleitungen/ Elektronik/F U und Starter/5. Parameter/ Parameterauflis tung (P000 ...)/P200- P299/Parameter P213 – Verst. I SD-Regelung @ 0\mod_132759032 3026_388.docx @ 8163 @ @ 1

P213

ISD ctrl. loop gain

(Amplification of ISD control)

S P

25 ... 400 %

{ 100 }

This parameter influences the control dynamics of the FI current vector control (ISD control). Higher

settings make the controller faster, lower settings slower.

Dependent on application type, this parameter can be altered, e.g. to avoid unstable operation.

Pos: 288 /Anleitungen/ Elektronik/F U und Starter/5. Parameter/ Parameterauflis tung (P000 ...)/P200- P299/Parameter P214 – Vor halt Drehmoment @ 0\mod_13275 90368794_388.doc x @ 8186 @ @ 1

P214

Torque precontrol

(Torque precontrol)

S P

-200 ... 200 %

{ 0 }

This function allows a value for the expected torque requirement to be set in the controller. This

function can be used in lifting applications for a better load transfer during start-up.

NOTE:

Motor torques (with rotation field right) are entered with a positive sign, generator

torques are entered with a negative sign.

The reverse applies for the counter