Danfoss VLT AutomationDrive FC 301 Programming Manual page 106

VLT AutomationDrive FC 301/302
Programming Guide
-
All frequency/current limit points from the motor nameplate or motor datasheet must be programmed.
1 0 0 %
8 0 %
4 0 %
5 Hz 15 Hz 25 Hz
Illustration 38: Example of ATEX ETR Thermal Limitation Curve
x-axis: f [Hz]
m
y-axis: I /I x 100 [%]
m m,n
Table 144: Interpolation Points
Parameter 1-98 ATEX ETR interpol. points freq.
[0]=5 Hz
[1]=15 Hz
[2]=25 Hz
[3]=50 Hz
All operating points underneath the curve are allowed continuously. Above the line, however, these are only allowed for a limited
time calculated as a function of the overload. When machine current is greater than 1.5 times the rated current, shutdown is imme-
diate.
Parameter 1-99 ATEX ETR Interpol. Points Current
Table 145: Parameter 1-99 ATEX ETR Interpol. Points Current
1-99 ATEX ETR Interpol. Points Current
Default value: Size related
Conversion index: 0
Definition of the thermal limitation curve. For example, see parameter 1-98 ATEX ETR Interpol. Points Freq.
Use the 4 current points [A] from the motor nameplate. Calcualte the values as percentage of nominal motor current, I
[%], and enter the values into this array.
Together with parameter 1-98 ATEX ETR Interpol. Points Freq., these constitute a table (f [Hz], I [%]).
All frequency/current limit points from the motor nameplate or motor datasheet must be programmed.
106 | Danfoss A/S © 2022.12
N O T I C E
50 Hz
Parameter type: Range, 0 - 100%, Array [4]
Data type: Uint16
N O T I C E
Parameter 1-99 ATEX ETR interpol. points current
[0]=40%
[1]=80%
[2]=100%
[3]=100%
Setup: 2 setups
Change during operation: True
Parameter Descriptions
/I x 100
m m,n
AU275636650261en-000101 / 130R0334