Danfoss VLT 8000 AQUA Instrukcje Operacyjne Pobierz pdf (Strona 109)

VLT

8000 AQUA

Programming

124 Stator reactance

(STATOR R EACT.)

Value:

✭depends on the choice of motor

Function:

After setting motor data in parameters 102-106, a

number of adjustments of various parameters are

made automatically, including the stator resistance

. The shaft performance can be improved by

fine-tuning R

and X

, see procedure below.

Description of choice:

can be set as follows:

1. Automatic motor adaptation, where the frequency

converter actually tests the motor to determine this

value. All compensations are reset to 100%.

2. The values are stated by the motor supplier.

3. These values are obtained by means of

manual measurements:

-X

can be calculated by connecting a motor to

mains and measuring the phase-to-phase voltage

as well as the idling current I.

Alternatively, these values can be recorded

during operation in idle running state at the

rated motor frequency f

M,N

, slip compensation

(par. 115) = 0% and load compensation at

high speed (par. 114) = 100%.

4. The factory settings of X

, selected by the

frequency converter itself on the basis of the

motor nameplate data, are used.

✭ = factory setting. () = display text [] = value for use in communication via serial communication port

MG.83.A2.02 - VLT is a registered Danfoss trademark

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Danfoss VLT 8000 AQUA Instrukcje Operacyjne Strona 109