Danfoss VLT AutomationDrive FC 300 Programming Manual page 54

Parameter Descriptions
1-93 Thermistor Source
Option:
3 3
[0] None
[1] Analog Input 53
[2] Analog Input 54
[3] Digital input 18
[4] Digital input 19
[5] Digital input 32
[6] Digital input 33
NOTE
Digital input should be set to [0] PNP - Active at 24 V in
5-00 Digital I/O Mode.
1-94 ATEX ETR cur.lim. speed reduction
FC 302 only.
Only visible if 1-90 Motor Thermal Protection is set to [20].
Range:
0 %
*
The reaction for operating in Ex-e current limit must be
configured.
0%: The frequency converter does not change anything
besides issuing warning 163 ATEX ETR cur.lim.warning.
>0%: The frequency converter issuing warning 163 and
reduces motor speed following ramp 2 (parameter group
3-5* Ramp 2).
Example:
Actual reference = 50 RPM
1-94 ATEX ETR cur.lim. speed reduction = 20%
Resulting reference = 40 RPM
1-95 KTY Sensor Type
Option:
[0] KTY Sensor 1 1 kΩ at 100 °C
[1] KTY Sensor 2 1 kΩ at 25 °C
[2] KTY Sensor 3 2 kΩ at 25 °C
52
VLT
Function:
NOTE
This parameter cannot be adjusted
while the motor is running.
Select the input to which the thermistor
(PTC sensor) should be connected. An
analog input option [1] or [2] cannot be
selected if the analog input is already in
use as a reference source (selected in
3-15 Reference 1 Source, 3-16 Reference 2
Source or 3-17 Reference 3 Source).
When using MCB 112, choice [0] None must
always be selected.
Function:
[0 - 100 %]
Function:
Select the used type of KTY sensor. FC 302
only.
MG33MG02 - VLT
®
AutomationDrive Programming Guide
1-96 KTY Thermistor Resource
Option:
[0] None
[2] Analog
Input 54
1-97 KTY Threshold level
Range:
80 °C [-40 - 140 °C] Select the KTY sensor threshold level for
*
1-98 ATEX ETR interpol. points freq.
FC 302 only.
Only visible if 1-90 Motor Thermal Protection is set to [20].
Range:
Size related
*
Enter the four frequency points [Hz] from the motor name
plate 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 name
plate or motor data sheet must be programmed.
1 0 0 %
8 0 %
4 0 %
5 Hz
Illustration 3.18 Example of ATEX ETR thermal limitation curve.
x-axis: f [Hz]
m
y-axis: I /I
m m,n
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is a registered Danfoss trademark
Function:
Selecting analog input terminal 54 to be used
as KTY sensor input. Terminal 54 cannot be
selected as KTY source if otherwise used as
reference (see 3-15 Reference Resource 1 to
3-17 Reference Resource 3).
FC 302 only.
NOTE
Connection of KTY-sensor between term.
54 and 55 (GND). See Illustration 3.15.
Function:
motor thermal protection.
FC 302 only.
[ 0 - 1000.0 Hz]
15 Hz 25 Hz
x 100 [%]
Function:
50 Hz