Danfoss VLT Programming Manual page 41

Parameter Description
NOTE
•
For the best adaptation of the frequency converter,
run AMA on a cold motor
•
AMA cannot be performed while the motor is
running
3 3
NOTE
Avoid generating external torque during AMA.
NOTE
If one of the settings in ameter group 1-2* Motor Data is
changed, 1-30 Stator Resistance (Rs) to 1-39 Motor Poles, the
advanced motor ameters, will return to default setting.
This ameter cannot be adjusted while the motor is running.
NOTE
Full AMA should be run without filter only while reduced
AMA should be run with filter.
See section: Application Examples > Automatic Motor
Adaptation in the Design Guide.
3.3.3 1-3* Adv. Motor Data
ameters for advanced motor data. The motor data in
1-30 Stator Resistance (Rs) to 1-39 Motor Poles must match the
relevant motor in order to run the motor optimally. The
default settings are figures based on common motor ameter
values from normal standard motors. If the motor ameters
are not set correctly, a malfunction of the frequency
converter system may occur. If the motor data is not known,
running an AMA (Automatic Motor Adaptation) is
recommended. See the Automatic Motor Adaptation section.
The AMA sequence will adjust all motor ameters except the
moment of inertia of the rotor and the iron loss resistance
(1-36 Iron Loss Resistance (Rfe)).
P 1-30
I
1 R
1s
U
1
Illustration 3.1 Motor equivalent diagram for an asynchronous
motor
1-30 Stator Resistance (Rs)
Range:
Size related
*
40
VLT
X
X'
1δ
2δ
P 1-36 P 1-35
R X
R'
Fe h
[0.0140 - 140.0000 Ohm]
MG.11.CB.02 - VLT
®
HVAC Drive Programming Guide
1-31 Rotor Resistance (Rr)
Range:
Application dependent
1-35 Main Reactance (Xh)
Range:
Size related
*
NOTE
This parameter cannot be adjusted while running.
1-36 Iron Loss Resistance (Rfe)
Range:
Size related
*
NOTE
This parameter cannot be adjusted while the motor is
running.
NOTE
This parameter is not available from the LCP.
1-39 Motor Poles
Range:
Size
related 100 ]
*
2
Function:
®
is a registered Danfoss trademark
[Application dependant]
*
[1.0000 - 10000.0000 Ohm]
[0 - 10000.000 Ohm]
Function:
[2 - Enter the number of motor poles.
Pole ~n @ 50 Hz
n
s
2 2700 - 2880
4 1350 - 1450
6 700 - 960
The table shows the number of poles for
normal speed ranges of various motor types.
Define motors designed for other frequencies
separately. The motor pole value is always an
even number, because it refers to the total
number of poles, not pairs of poles. The
frequency converter creates the initial setting
of 1-39 Motor Poles based on 1-23 Motor
Frequency Motor Frequency and 1-25 Motor
Nominal Speed Motor Nominal Speed.
This parameter cannot be adjusted while the
motor is running.
Function:
Function:
Function:
~n @60 Hz
n
3250 - 3460
1625 - 1730
840 - 1153