Danfoss VLT AutomationDrive FC 302, Руководство по программированию, Страница: 59 / 346

130BA046.11
60%
0%
100%
U
m
Changeover
f
out
Par.1-60 Par.1-61
Illustration 3.11 Changeover
1-61 High Speed Load Compensation
Range: Function:
100 %
*
[0 -
300 %] Enter the % value to compensate voltage in
relation to load when the motor is running
at high speed and obtain the optimum U/f
characteristic. The motor size determines the
frequency range within which this parameter
is active.
Motor size Changeover
0.25–7.5 kW >10 Hz
Table 3.7 Changeover Frequency
1-62 Slip Compensation
Range: Function:
Size
related
*
[-500
-
500 %] Enter the % value for slip compensation to
compensate for tolerances in the value of
n
M,N
. Slip compensation is calculated automat-
ically, that is on the basis of the nominal
motor speed n
M,N
.
This function is not active when
parameter 1-00 Configuration Mode is set to
[1] Speed closed loop or [2] Torque torque
control with speed feedback or when
parameter 1-01 Motor Control Principle is set to
[0] U/f special motor mode.
1-63 Slip Compensation Time Constant
Range: Function:
Size
related
*
[0.05 -
5 s]
NOTICE
Parameter 1-63 Slip Compensation
Time Constant
has no effect when
parameter 1-10 Motor Construction =
[1] PM, non-salient SPM .
Enter the slip compensation reaction
speed. A high value results in slow
1-63 Slip Compensation Time Constant
Range: Function:
reaction, and a low value results in quick
reaction. If low-frequency resonance
problems arise, use a longer time setting.
1-64 Resonance Damping
Range: Function:
Size
related
*
[0 -
1000 %
]
NOTICE
Parameter 1-64 Resonance Damping has
no effect when parameter 1-10 Motor
Construction = [1] PM , non-salient SPM.
Enter the resonance damping value. Set
parameter 1-64 Resonance Damping and
parameter 1-65 Resonance Damping Time
Constant
to help eliminate high frequency
resonance problems. To reduce resonance
oscillation, increase the value of
parameter 1-64 Resonance Damping .
1-65 Resonance Damping Time Constant
Range: Function:
5 ms
*
[1 - 50
ms]
NOTICE
Parameter 1-65 Resonance Damping Time
Constant
has no effect when
parameter 1-10 Motor Construction = [1]
PM, non-salient SPM .
Set parameter 1-64 Resonance Damping and
parameter 1-65 Resonance Damping Time
Constant
to help eliminate high frequency
resonance problems. Enter the time constant
that provides the best dampening.
1-66 Min. Current at Low Speed
Range: Function:
Size
related
*
[ 1 -
200 %
]
NOTICE
If parameter 40-50 Flux Sensorless Model
Shift is set to [0] Off , this parameter is
ignored.
Enter the minimum motor current at low
speed, see
parameter 1-53 Model Shift
Frequency . Increasing this current improves
motor torque at low speed.
Parameter 1-66 Min. Current at Low Speed is
enabled when parameter 1-00 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 4-16 Torque Limit Motor Mode
Parameter Descriptions Programming Guide
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