GE AF-650 GP Programming Manual page 75

Parameter Descriptions
H-64 Resonance Dampening
Range:
100 [0 -
% 500 %]
*
3 3
H-65 Resonance Dampening Time Constant
Range:
5 ms [5 - 50
*
ms]
H-66 Min. Current at Low Speed
Range:
100 [1 -
% 200 %]
*
74
Function:
NOTICE
Parameter H-64 Resonance Dampening has
no effect when parameter P-20 Motor
Construction=[1] PM, non-salient SPM.
Enter the resonance damping value. Set
parameter H-64 Resonance Dampening and
parameter H-65 Resonance Dampening Time
Constant to help eliminate high frequency
resonance problems. To reduce resonance
oscillation, increase the value of
parameter H-64 Resonance Dampening.
Function:
NOTICE
Parameter H-65 Resonance Dampening
Time Constant has no effect when
parameter P-20 Motor Construction = [1]
PM, non-salient SPM.
Set parameter H-64 Resonance Dampening and
parameter H-65 Resonance Dampening Time
Constant to help eliminate high frequency
resonance problems. Enter the time constant
that provides the best dampening.
Function:
Enter the minimum motor current at low speed,
see parameter H-53 Model Shift Frequency.
Increasing this current improves motor torque at
low speed.
Parameter H-66 Min. Current at Low Speed is
enabled when parameter H-40 Configuration
Mode [0] Speed open loop only. The frequency
converter runs with constant current through
motor for speeds below 10 Hz.
For speeds above 10 Hz, the motor Flux model
in the frequency converter controls the motor.
Parameter F-40 Torque Limiter (Driving) and/or
parameter F-41 Torque Limiter (Braking) automat-
ically adjust parameter H-66 Min. Current at Low
Speed. The parameter with the highest value
adjusts parameter H-66 Min. Current at Low Speed.
The current setting in parameter H-66 Min.
Current at Low Speed is composed of the torque
generating current and the magnetizing current.
Example: Set parameter F-40 Torque Limiter
(Driving) to 100% and set parameter F-41 Torque
Limiter (Braking) to 60%. Parameter H-66 Min.
Current at Low Speed automatically adjusts to
about 127%, depending on the motor size.
H-67 Torque Limit Factor Source
Option:
[0] No function
*
[2] Analog in 53
[4] Analog in 53 inv
[6] Analog in 54
[8] Analog in 54 inv
[10] Analog in X30-11
[12] Analog in X30-11
inv
[14] Analog in X30-12
[16] Analog in X30-12
inv
H-68 Speed Limit Factor Source
Option:
[0] No function
*
[2] Analog in 53
[4] Analog in 53 inv
[6] Analog in 54
[8] Analog in 54 inv
[10] Analog in X30-11
[12] Analog in X30-11
inv
[14] Analog in X30-12
[16] Analog in X30-12
inv
02/2016 All rights reserved.
Function:
Select an analog input for scaling the
settings in parameter F-40 Torque Limiter
(Driving) and parameter F-41 Torque
Limiter (Braking) 0–100% (or inverse). The
signal levels corresponding to 0% and
100% are defined in the analog input
scaling, for example parameter group
AN-1#. This parameter is only active
when parameter H-40 Configuration Mode
is in Speed Open Loop or Speed Closed
Loop.
Function:
Select an analog input for scaling the
settings in parameter F-03 Max Output
Frequency 1 0–100% (or the other way
around). The signal levels corresponding
to 0% and 100% are defined in the
analog input scaling, for example
parameter group AN-1#. This parameter
is only active when
parameter H-40 Configuration Mode is in
[4] Torque Open Loop.
DET-618D