VLT
®
8000 AQUA
Programming
124 Stator reactance
(STATOR REACT.)
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
X
S
. The shaft performance can be improved by
fine-tuning R
S
and X
S
, see procedure below.
Description of choice:
X
S
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
S
can be calculated by connecting a motor to
mains and measuring the phase-to-phase voltage
U
L
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
S
, 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
107
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