P-27 Voltage filter time const.
Range:
Function:
distort the calculated voltage and affect
the stability of the system.
3.6.3 P-3# Adv. Motor Data
Parameters for advanced motor data. The motor data in
P-30 Stator Resistance (Rs)
to
P-39 Motor Poles
must match
the relevant motor in order to run the motor optimally.
The default settings are figures based on common motor
parameter values from normal standard motors. If the
motor parameters are not set correctly, a malfunction of
the frequency converter system may occur. If the motor
data is not known, running an Auto Tune is recommended.
See the
Auto Tune
section. The Auto Tune sequence will
adjust all motor parameters except the moment of inertia
of the rotor and the iron loss resistance (
P-36 Iron Loss
Resistance (Rfe)
).
Illustration 3.20 Motor Equivalent Diagram for an Asynchronous
Motor
Illustration 3.21 Motor Equivalent Circuit Diagram for a PM Non
Salient Motor
P-30 Stator Resistance (Rs)
Range:
Function:
1.4000
Ohm
*
[0.0140 -
140.0000
Ohm]
Set the line to common stator resistance
value. Enter the value from a motor data
sheet or perform an Auto Tune on a
cold motor.
NOTE
For PM motors:
Auto Tune is not available.
If only line-line data are available,
divide the line-line value by 2 to
achieve the line to common
(starpoint) 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.
P-31 Rotor Resistance (Rr)
Range:
Function:
1.0000
Ohm
*
[0.0100 -
100.0000
Ohm]
Fine-tuning R
r
will improve shaft
performance. Set the rotor resistance value
using one of these methods:
1.
Run an Auto Tune on a cold
motor. The frequency converter
will measure the value from the
motor. All compensations are
reset to 100%.
2.
Enter the R
r
value manually.
Obtain the value from the motor
supplier.
3.
Use the R
r
default setting. The
frequency converter establishes
the setting on the basis of the
motor nameplate data.
NOTE
will not have effect when
P-20 Motor Construction
= [1] PM, non salient SPM.
P-33 Stator Leakage Reactance (X1)
Range:
Function:
4.0000
Ohm
*
[0.0400 -
400.0000
Ohm]
Set the stator leakage reactance of the
motor using one of these methods:
1.
Run an Auto Tune on a cold
motor. The frequency converter
will measure the value from the
motor.
2.
Enter the X
1
value manually.
Obtain the value from the motor
supplier.
Parameter Descriptions
AF-650 GP Programming Guide
58
DET-618C
3
3
