GE AF-650 GP Programming Manual page 61

Parameter Descriptions
P-25 Low Speed Filter Time Const.
Range:
0.01 s [0.01 - 20 s] This time constant is used below 10%
*
3 3
P-26 High Speed Filter Time Const.
Range:
0.01 s [0.01 - 20 s] This time constant is used above 10%
*
P-27 Voltage filter time const.
Range:
0.001 s [0.001 - 1
*
s]
P-28 Min. Current at No Load
Range:
0 % [0 - 50 %] Adjust this parameter to achieve a smoother
*
3.6.3 P-3# Adv. Motor Data
Parameters for advanced motor data. The motor data in
parameter P-30 Stator Resistance (Rs) to
parameter 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 (parameter P-36 Iron Loss Resistance (Rfe)).
60
Function:
rated speed. Obtain quick control through
a short damping time constant. However,
if this value is too short, the control
becomes unstable.
Function:
rated speed. Obtain quick control through
a short damping time constant. However,
if this value is too short, the control
becomes unstable.
Function:
Reduces the influence of high frequency
ripple and system resonance in the
calculation of supply voltage. Without this
filter, the ripples in the currents can
distort the calculated voltage and affect
the stability of the system.
Function:
motor operation.
02/2016 All rights reserved.
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 [0.0140 - Set the line to common stator resistance
Ohm 140.0000 value. Enter the value from a motor
*
Ohm] datasheet or perform an Auto Tune on a
cold motor.
NOTICE
For salient 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 (star
point) 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.
DET-618D