Danfoss VLT AutomationDrive FC 301 Programming Manual page 79

Parameter Descriptions
1-95 Thermistor Sensor Type
Option: Function:
[4] Ni1000 (6178
ppm/K)
[5] Ni1000-LG Examples:
(TC5)
1-96 Thermistor Sensor Resource
Option: Function:
NOTICE
Valid for FC 302 only.
Selecting analog input terminal 54
to be used as thermistor sensor
input. Terminal 54 cannot be
selected as thermistor source if
otherwise used as reference (see
parameter 3-15 Reference Resource 1
to parameter 3-17 Reference Resource
3).
NOTICE
Connection of thermistor
sensor between terminals 54
and 55 (GND). See
Illustration 3.15.
[0] None
*
[2] Analog Input
54
1-97 Thermistor Threshold level
Range: Function:
80 °C [ -40 - Select the thermistor sensor
*
220 °C] threshold level for motor thermal
protection.
1-98 ATEX ETR interpol. points freq.
Range: Function:
NOTICE
Size [ 0 - 1000.0
related Hz]
*
Valid for FC 302 only.
Only visible if parameter 1-90 Motor
Thermal Protection is set to [20].
Enter the 4 frequency points [Hz] from the motor
nameplate into this array. Table 3.10 shows the example of
frequency/current points.
NOTICE
All frequency/current limit points from the motor
nameplate or motor datasheet must be programmed.
M0013101
Programming Guide
•
Siemens LG-Ni1000
•
Tasseron RTD Ni1000-TC5
1000 Ohm
Danfoss A/S © 10/2019 All rights reserved.
1 0 0 %
8 0 %
4 0 %
5 Hz 15 Hz 25 Hz
Illustration 3.18 Example of ATEX ETR Thermal Limitation
Curve
x-axis: f [Hz]
m
y-axis: I /I x 100 [%]
m m,n
Parameter 1-98 ATEX ETR interpol.
points freq.
[0]=5 Hz
[1]=15 Hz
[2]=25 Hz
[3]=50 Hz
Table 3.10 Interpolation Points
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 immediate.
1-99 ATEX ETR interpol points current
Only visible if parameter 1-90 Motor Thermal Protection is set to
[20] or [21].
Range: Function:
NOTICE
Size [0 - 100 %]
related
*
Valid for FC 302 only.
Definition of thermal limitation
curve. For example, see
parameter 1-98 ATEX ETR interpol.
points freq.
Use the 4 current points [A] from the motor nameplate.
Calculate the values as percentage of nominal motor
current, I /I x 100 [%], and enter into this array.
m m,n
Together with parameter 1-98 ATEX ETR interpol. points freq.,
these constitute a table (f [Hz],I [%]).
50 Hz
Parameter 1-99 ATEX ETR
interpol points current
[0]=40%
[1]=80%
[2]=100%
[3]=100%
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