1-39 Motor Poles
Range: Function:
Size
related*
[2 - 132 ]
NOTICE
This parameter cannot be
adjusted while the motor is
running.
Enter the number of motor poles.
Poles ~n
n
@ 50 Hz ~n
n
@ 60 Hz
2 2700–2880 3250–3460
4 1350–1450 1625–1730
6 700–960 840–1153
Table 3.7 Pole Counts and
Related Frequencies
Table 3.7 shows the number of
poles for normal speed ranges of
various motor types. Dene motors
designed for other frequencies
separately. The motor pole value is
always an even number, because it
refers to the total pole numbers,
not pairs of poles. The frequency
converter creates the initial setting
of parameter 1-39 Motor Poles based
on parameter 1-23 Motor Frequency
and parameter 1-25 Motor Nominal
Speed.
1-40 Back EMF at 1000 RPM
Range: Function:
Size
related*
[1 - 9000 V] Set the nominal back EMF for the
motor when running at 1000 RPM.
This parameter is only active when
parameter 1-10 Motor Construction is
set to [1] PM, non-salient SPM.
1-47 Torque Calibration
Option: Function:
Use this parameter to optimize the
torque estimate in the full speed
range. The estimated torque is
based on the shaft power, P
shaft
=
P
m
- R
s
x I
2
. Make sure that the R
s
value is correct. The R
s
value in this
formula is equal to the power loss
in the motor, the cable, and the
frequency converter. When this
parameter is active, the frequency
converter calculates the R
s
value
during power-up, ensuring the
optimal torque estimate and
optimal performance. Use this
feature in cases when it is not
possible to adjust
parameter 1-30 Stator Resistance (Rs)
on each frequency converter to
compensate for the cable length,
frequency converter losses, and the
temperature deviation on the
motor.
[0] O
[1] 1st start after
pwr-up
Calibrates at the 1
st
start-up after
power-up and keeps this value until
reset by a power cycle.
[2] Every start Calibrates at every start-up,
compensating for a possible change
in motor temperature since last
start-up. The value is reset after a
power cycle.
[3] 1st start with
store
The frequency converter calibrates
the torque at the rst start-up after
power-up. This option is used to
update motor parameters:
•
Parameter 1-30 Stator
Resistance (Rs).
•
Parameter 1-33 Stator
Leakage Reactance (X1).
•
Parameter 1-34 Rotor
Leakage Reactance (X2).
•
Parameter 1-37 d-axis
Inductance (Ld).
[4] Every start
with store
The frequency converter calibrates
the torque at every start-up,
compensating for a possible change
in motor temperature since last
start-up. This option is used to
update motor parameters:
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