Danfoss VLT AQUA Drive FC 202 Programming Manual page 57

Parameter Description
3.3.10 1-6* Load Depend. Setting
1-60 Low Speed Load Compensation
Range: Function:
NOTICE
100 [0 -
% 300 %]
*
Parameter 1-60 Low Speed Load Compen-
sation has no effect when
parameter 1-10 Motor Construction = [1]
PM, non-salient SPM.
Enter the % value to compensate voltage in
relation to load when the motor is running at
low speed and obtain the optimum U/f charac-
teristic. The motor size determines the frequency
range within which this parameter is active.
Motor size [kW]
0.25–7.5
11–45
55–550
Table 3.8 Changeover Frequency
U
m
Par.1-60
100%
60%
0%
Changeover
Illustration 3.10 Low Speed Load Compensation
1-61 High Speed Load Compensation
Range: Function:
NOTICE
100 [0 -
% 300 %]
*
Parameter 1-61 High Speed Load Compen-
sation has no effect when
parameter 1-10 Motor Construction = [1]
PM, non-salient SPM.
Enter the % value to compensate voltage in
relation to load when the motor is running at
high speed and obtain the optimum U/f charac-
teristic. The motor size determines the frequency
range within which this parameter is active.
MG20OB02
Programming Guide
1-61 High Speed Load Compensation
Range:
1-62 Slip Compensation
Range:
0 %
Changeover [Hz]
<10
<5
<3–4
1-63 Slip Compensation Time Constant
Range:
Par.1-61
Size
related
f
out
1-64 Resonance Damping
Range:
Size
related
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Function:
Motor size [kW]
0.25–7.5
11–45
55–550
Table 3.9 Changeover Frequency
Function:
NOTICE
[-500 -
*
500 %]
Parameter 1-62 Slip Compensation has no
effect when parameter 1-10 Motor
Construction = [1] PM, non-salient SPM.
To compensate for tolerances in the value of
n , enter the % value for slip compensation.
M,N
Slip compensation is calculated automatically,
that is based on the nominal motor speed n
Function:
NOTICE
[0.05 -
5 s]
*
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
reaction, and a low value results in quick
reaction. If low-frequency resonance
problems occur, use a longer time setting.
Function:
NOTICE
[0 -
500 %
*
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.
Changeover [Hz]
>10
3
<5
<3–4
.
M,N
55
3