Atex Etr Interpol. Points Freq; Atex Etr Interpol Points Current - Danfoss VLT AutomationDrive Programming Manual

Parameter Descriptions
1-96 KTY Thermistor Resource
Option:
[2] Analog
3 3
input 54
1-97 KTY Threshold level
Range:
80 C
*

1-98 ATEX ETR interpol. points freq.

FC 302 only.
Only visible if 1-90 Motor Thermal Protection is set to [20].
Range:
Application
dependent
*
Enter the four frequency points [Hz] from the motor
nameplate into this array. Together with 1-99 ATEX ETR
interpol points current, these make up a table (f [Hz],I [%]).
NOTE!
All frequency/current limit points from the motor
nameplate or motor data sheet must be programmed.
1 0 0 %
8 0 %
4 0 %
5 Hz 15 Hz
Figure 3.7 Example of ATEX ETR thermal limitation curve.
x-axis: f [Hz]
m
y-axis: I /I x 100 [%]
m m,n
1-98 ATEX ETR interpol. points freq. 1-99 ATEX ETR interpol points
[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, only for a limited
time calculated as a function of the overload. In the event
3-28
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Function:
Function:
[-40 - 140 C]
Function:
[Application Definition of
dependant] thermal limitation
curve.
25 Hz
current
[0] = 40%
[1] = 80%
[2] = 100%
[3] = 100%
MG33MD22 - VLT
FC 300 Programming Guide
of a machine current greater than 1.5 times the rated
current, shut down is immediate.

1-99 ATEX ETR interpol points current

FC 302 only.
Only visible if 1-90 Motor Thermal Protection is set to [20] or [21].
Range:
Application
dependent
Use the four current points [A] from the motor nameplate.
Calculate the values as percentage of nominal motor
current, I
Together with 1-98 ATEX ETR interpol. points freq., these
make up a table (f [Hz],I [%]).
NOTE!
All frequency/current limit points from the motor
nameplate or motor data sheet must be programmed.
50 Hz
®
is a registered Danfoss trademark
Function:
[0 - 100 %] Definition of thermal
limitation curve. For
*
example, see 1-98 ATEX
ETR interpol. points freq.
/I x 100 [%], and enter into this array.
m m,n