GE AF-650 GP Programming Manual page 59

Parameter Descriptions
P-27 Voltage filter time const.
Range:
3 3
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
58
AF-650 GP Programming Guide
Function:
distort the calculated voltage and affect
the stability of the system.
P-30 Stator Resistance (Rs)
Range:
1.4000 [0.0140 -
Ohm 140.0000
*
Ohm]
P-31 Rotor Resistance (Rr)
Range: Function:
1.0000 [0.0100 - Fine-tuning R
Ohm 100.0000 performance. Set the rotor resistance value
*
Ohm] using one of these methods:
NOTE
P-31 Rotor Resistance (Rr) will not have effect when
P-20 Motor Construction = [1] PM, non salient SPM.
P-33 Stator Leakage Reactance (X1)
Range:
4.0000 [0.0400 - Set the stator leakage reactance of the
Ohm 400.0000 motor using one of these methods:
*
Ohm]
DET-618C
Function:
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.
will improve shaft
r
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 value manually.
r
Obtain the value from the motor
supplier.
3. Use the R default setting. The
r
frequency converter establishes
the setting on the basis of the
motor nameplate data.
Function:
1. Run an Auto Tune on a cold
motor. The frequency converter
will measure the value from the
motor.
2. Enter the X value manually.
1
Obtain the value from the motor
supplier.