1-30 Stator Resistance (Rs)
Range:
Function:
Size
related
*
[ 0.0 -
99.99 Ohm]
NOTICE
This parameter cannot be
adjusted while the motor is
running.
Set the stator resistance value. Enter
the value from a motor datasheet or
perform an AMA on a cold motor.
1-31 Rotor Resistance (Rr)
Range:
Function:
Size
related
*
[ 0.010 -
100.000
Ohm]
Enter the rotor resistance value.
Obtain the value from a motor
datasheet or by performing an AMA
on a cold motor. The default setting is
calculated by the frequency converter
from the motor nameplate data.
1-33 Stator Leakage Reactance (X1)
Range:
Function:
Size
related
*
[ 0.0 -
999.9 Ohm]
Set the stator leakage reactance value.
Obtain the value from a motor
datasheet or perform an AMA on a
cold motor. The default setting is
calculated by the frequency converter
from the motor nameplate data.
1-35 Main Reactance (Xh)
Range:
Function:
Size
related
*
[ 0.0 -
999.9
Ohm]
Set the main reactance of the motor using
one of these methods:
•
Run an AMA on a cold motor. The
frequency converter measures the
value from the motor.
•
Enter the X
h
value manually.
Obtain the value from the motor
supplier.
•
Use the X
h
default setting. The
frequency converter establishes
the setting based on the motor
nameplate data.
1-37 d-axis Inductance (Ld)
Range:
Function:
Size related
*
[ 0 - 1000
mH]
Enter the value of the d-axis
inductance. Obtain the value from
the permanent magnet motor
datasheet.
1-38 q-axis Inductance (Lq)
Range:
Function:
Size
related
*
[ 0.000 -
1000 mH]
Set the value of the q-axis
inductance. Find the value in the
motor datasheet. This parameter
cannot be changed while the motor
is running.
1-39 Motor Poles
Range:
Function:
Size
related
*
[2 -
100 ]
NOTICE
This parameter cannot be adjusted
while the motor is running.
Enter the number of motor poles.
The motor pole value is always an even
number, because it refers to the total pole
numbers, not pairs of poles.
4.2.5 1-4* Adv. Motor Data II
Set parameters for advanced motor data.
1-40 Back EMF at 1000 RPM
Range:
Function:
Size
related
*
[0 -
9000 V]
Set the nominal back EMF for the motor
when running at 1000 RPM.
Back EMF is the voltage generated by a PM
motor when no frequency converter is
connected and the shaft is turned
externally. Back EMF is normally specified
for nominal motor speed or for 1000 RPM
measured between 2 lines. If the value is
not available for a motor speed of 1000
RPM, calculate the correct value as follows.
If back EMF is, for example, 320 V at 1800
RPM, it can be calculated at 1000 RPM:
Example
Back EMF 320 V at 1800 RPM. Back EMF =
(Voltage/RPM)*1000 = (320/1800)*1000 =
178.
This parameter is only active when
parameter 1-10 Motor Construction
is set to
options that enable PM (permanent
magnet) motors.
NOTICE
When using PM motors, it is
recommended to use brake resistors.
1-42 Motor Cable Length
Range:
Function:
50 m
*
[0 - 100 m]
Set the motor cable length in metres.
Parameter Descriptions
Programming Guide
MG06C602
Danfoss A/S © 7/2015 All rights reserved.
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