GE AF-650 GP Programming Manual page 66

Parameter Descriptions
H-47 Motor Angle Offset
Range: Function:
This parameter is only active when P-20 Motor
Construction is set to [1] PM, non-salient SPM
(Permanent Magnet Motor).
H-48 Clockwise Direction
Option: Function:
NOTE
This parameter cannot be adjusted while the
motor is running.
This parameter defines the term "Clockwise"
corresponding to the keypad direction arrow. Used
for easy change of direction of shaft rotation
without swapping motor wires.
[0] Normal Motor shaft will turn in clockwise direction when
*
the frequency converter is connected U ⇒ U; V⇒V,
and W ⇒ W to motor.
[1] Inverse Motor shaft will turn in counter clockwise direction
when the frequency converter is connected U⇒U;
V⇒V, and W⇒ W to motor.
3.7.4 H-5# Load Indep. Settings
Parameters to configure the load-independent motor
settings.
H-50 Motor Magnetisation at Zero Speed
Range: Function:
100 [0 - Use this parameter along with H-51 Min Speed
% 300 Normal Magnetising [RPM] to obtain a different
*
%] thermal load on the motor when running at low
speed.
Enter a value which is a percentage of the rated
magnetizing current. If the setting is too low, the
torque on the motor shaft may be reduced.
Illustration 3.25 Motor Magnetisation
NOTE
H-50 Motor Magnetisation at Zero Speed will not have effect
when P-20 Motor Construction = [1] PM, non salient SPM.
AF-650 GP Programming Guide
H-51 Min Speed Normal Magnetising [RPM]
Range:
15 RPM
*
NOTE
H-51 Min Speed Normal Magnetising [RPM] will not have
effect when P-20 Motor Construction = [1] PM, non salient
SPM.
H-52 Min Speed Normal Magnetising [Hz]
Range:
12.5 Hz
*
H-53 Model Shift Frequency
Range:
4.0
Hz 18.0
*
Hz]
DET-618C
Function:
[10 - 300 Set the required speed for normal
RPM] magnetising current. If the speed is set
lower than the motor slip speed,
H-50 Motor Magnetisation at Zero Speed
and H-51 Min Speed Normal Magnetising
[RPM] are of no significance.
Use this parameter along with H-50 Motor
Magnetisation at Zero Speed. See
Table 3.15.
Function:
[0 - 250.0 Set the required frequency for normal
Hz] magnetising current. If the frequency is set
lower than the motor slip frequency,
H-50 Motor Magnetisation at Zero Speed is
inactive.
Use this parameter along with H-50 Motor
Magnetisation at Zero Speed. See drawing
for H-50 Motor Magnetisation at Zero
Speed.
Function:
[4 - Flux Model shift
Enter the frequency value for shift between two
models for determining motor speed. Choose the
value based on settings in H-40 Configuration
Mode and H-41 Motor Control Principle. There are
two options: shift between Flux model 1 and Flux
model 2; or shift between Variable Current mode
and Flux model 2.
This parameter cannot be adjusted while the
motor is running.
Flux Model 1 – Flux model 2
This model is used when H-40 Configuration Mode
is set to [1] Speed closed loop or [2] Torque and
H-41 Motor Control Principle is set to [3] Flux w/
motor feedback. With this parameter it is possible
to make an adjustment of the shifting point
where AF-650 GP changes between Flux model 1
and Flux model 2, which is useful in some
sensitive speed and torque control applications.
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