Danfoss VLT AutomationDrive FC 301 Programming Manual page 50

Parameter Descriptions
parameters are not set correctly, a malfunction of the
frequency converter system may occur. If the motor data
are unknown, running an AMA (automatic motor
adaptation) is recommended. See parameter 1-29 Automatic
Motor Adaptation (AMA).
Parameter groups 1-3* Adv. Motor Data and 1-4* Adv. Motor
3 3
Data II cannot be adjusted while the motor is running.
NOTICE
A simple check of the X1 + Xh sum value is to divide the
line-to-line motor voltage by the sqrt(3) and divide this
value by the motor no load current. [VL-L/sqrt(3)]/I
X1 + Xh, see Illustration 3.6. These values are important
to magnetize the motor properly. For high-pole motors,
it is highly recommended to perform this check.
P 1-30
I
1 R
s
U
1
Illustration 3.6 Motor Equivalent Diagram of an Asynchronous
Motor
1-30 Stator Resistance (Rs)
Range:
Size [ 0.0140 -
related 140.0000
*
Ohm]
48
VLT
P 1-34
P 1-33
X
X'
1δ 2δ
P 1-36 P 1-35
R X
Fe h
Function:
Set the line to common stator resistance
value. Enter the value from a motor
datasheet or perform an AMA on a cold
motor.
NOTICE
For salient PM motors:
AMA is not available.
If only line-line data are available,
divide the line-line value by 2 to
achieve the line to common (star
point) value. Alternatively, measure
the value with an ohmmeter. This
also takes the resistance of the
cable into account. Divide the
measured value by 2 and enter the
result.
Danfoss A/S © 02/2016 All rights reserved.
®
AutomationDrive FC 301/302
1-30 Stator Resistance (Rs)
Range:
=
1-31 Rotor Resistance (Rr)
NL
Range:
Size
related 100.0000
*
Ohm]
P 1-31
R'
r
1-33 Stator Leakage Reactance (X1)
Range:
Size
related 400.0000
*
Ohm]
Function:
NOTICE
The parameter value is updated
after each torque calibration if
option [3] 1st start with store or
option [4] Every start with store is
selected in parameter 1-47 Torque
Calibration.
Function:
NOTICE
[ 0.0100 -
Parameter 1-31 Rotor Resistance (Rr)
does not have effect when
parameter 1-10 Motor Construction is
set to [1] PM, non-salient SPM, [5]
Sync. Reluctance.
Set the rotor resistance value R
improve shaft performance using 1 of
these methods.
•
Run an AMA on a cold motor.
The frequency converter
measures the value from the
motor. All compensations are
reset to 100%.
•
Enter the R
r
Obtain the value from the motor
supplier.
•
Use the R default setting. The
r
frequency converter establishes
the setting based on the motor
nameplate data.
Function:
[ 0.0400 - Set the stator leakage reactance of the
motor using 1 of these methods:
•
Run an AMA on a cold motor.
The frequency converter
measures the value from the
motor.
•
Enter the X
Obtain the value from the
motor supplier.
•
Use the X
1
frequency converter establishes
the setting based on the motor
nameplate data.
See Illustration 3.6.
to
r
value manually.
value manually.
1
default setting. The
MG33ML02