Dependent Setting (Menu Index 4.4.4) - Danfoss iC2 Application Manual

Application Guide | iC2-Micro Frequency Converters
Make a U/f characteristic based on 6 definable voltages and frequencies. See figure below.
Voltage Point
P 4.4.3.1 [x]
P 4.4.3.1 [5]
P 4.4.3.1 [4]
P 4.4.3.1 [3]
P 4.4.3.1 [2]
P 4.4.3.1 [1]
P 4.4.3.1 [0]
P 4.4.3.2 P 4.4.3.2 P 4.4.3.2
[0] [1] [2]
Figure 70: Example of U/f Characteristic

Dependent Setting (Menu Index 4.4.4)

7.5.3.4
P 4.4.4.1 Slip Comp. Gain
Enter the % value for slip compensation to compensate for tolerances in the value of n
that is, based on the rated motor speed n
[2] Torque closed loop, or [4] Torque open loop, or when P 5.4.3 Motor Control Principle is set to [0] U/f, or when P 4.2.1.1 Motor Type is
set to [1] PM, Non-salient SPM or [3] PM, Salient IPM.
Default value:
Size Related
Parameter
162
number:
Data type:
int16
P 4.4.4.2 Slip Comp. Time Constant
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.
Default value:
0.10
Parameter
163
number:
Data type:
uint16
P 4.4.4.3 High Speed Load Comp.
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.
Default value:
100
Parameter
161
number:
Data type:
int16
132
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P 4.4.3.2 P 4.4.3.2 P 4.4.3.2
[3] [4] [5]
Frequency Point
P 4.4.3.2 [x]
. This function is not active when P 5.4.2 Configuration Mode is set to [1] Speed closed loop,
M,N
. Slip compensation is calculated automatically,
M,N
Parameter type:
Unit:
Access type:
Parameter type:
Unit:
Access type:
Parameter type:
Unit:
Access type:
Range (Size Related)
%
Read/Write
Range (0.05–5.00)
s
Read/Write
Range (0–300)
%
Read/Write
AB413939445838en-000301 / 130R1254