Danfoss VLT AutomationDrive FC 301 Programming Manual page 44

Parameter Descriptions
P 1-30
I
1
R
s
U
1
3 3
Illustration 3.6 Motor Equivalent Diagram of an Asynchronous
Motor
1-30 Stator Resistance (Rs)
Range:
1.4000 [0.0140 -
Ohm 140.0000
*
Ohm]
1-31 Rotor Resistance (Rr)
Range:
1.0000 [0.0100 -
Ohm 100.0000
*
Ohm]
42
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 is 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.
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
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
shaft performance using 1 of these
methods:
•
Run an AMA on a cold motor. The
frequency converter measures the
Danfoss A/S © 01/2018 All rights reserved.
®
AutomationDrive FC 301/302
1-31 Rotor Resistance (Rr)
Range:
P 1-31
R'
r
1-33 Stator Leakage Reactance (X1)
Range:
4.0000 [0.0400 -
Ohm 400.0000
*
Ohm]
1-34 Rotor Leakage Reactance (X2)
Range:
4.0000 [0.0400 -
Ohm 400.0000
*
Ohm]
to improve
r
Function:
value from the motor. All compen-
sations are reset to 100%.
•
Enter the R value manually.
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:
NOTICE
This parameter is only relevant for
asynchronous motors.
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 value manually.
1
Obtain the value from the motor
supplier.
•
Use the X default setting. The
1
frequency converter establishes
the setting based on the motor
nameplate data.
See Illustration 3.6.
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
This parameter is only relevant for
asynchronous motors.
Set the rotor leakage reactance of the
motor using 1 of these methods:
•
Run an AMA on a cold motor.
The frequency converter
MG33MO02