Danfoss VLT AutomationDrive FC 301 Programming Manual page 64

Parameter Descriptions
1-93 Thermistor Source
Option:
[6] Digital input
33
NOTICE
3 3
Valid for FC 302 only.
1-94 ATEX ETR cur.lim. speed reduction
Range:
0 % [0 - 100 %] Only visible if parameter 1-90 Motor Thermal
*
Configure the reaction for operating in Ex-e current limit.
0%: The frequency converter does not change anything
besides issuing Warning 163 ATEX ETR cur.lim.warning.
>0%: The frequency converter issues Warning 163 ATEX ETR
cur.lim.warning and reduces motor speed following ramp 2
(parameter group 3-5* Ramp 2).
Example:
Actual reference = 50 RPM
Parameter 1-94 ATEX ETR cur.lim. speed reduction = 20%
Resulting reference = 40 RPM
1-95 KTY Sensor Type
Option:
KTY Sensor 1 1 kΩ at 100 °C.
[0]
*
KTY Sensor 2 1 kΩ at 25 °C.
[1]
KTY Sensor 3 2 kΩ at 25 °C.
[2]
1-96 KTY Thermistor Resource
Option:
[0] None
*
[2] Analog
Input 54
62
VLT
Function:
Function:
Protection is set to [20].
Function:
Select the used type of KTY sensor. FC 302
only.
Function:
NOTICE
Valid for FC 302 only.
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 parameter 3-15 Reference Resource
1 to parameter 3-17 Reference Resource 3).
FC 302 only.
NOTICE
Connection of KTY sensor between term.
54 and 55 (GND). See Illustration 3.15.
Danfoss A/S © 02/2016 All rights reserved.
®
AutomationDrive FC 301/302
NOTICE
Valid for FC 302 only.
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.
Range:
Size related
*
Enter the 4 frequency points [Hz] from the motor
nameplate into this array. Together with
parameter 1-99 ATEX ETR interpol points current, these can
be presented in Table 3.10.
NOTICE
All frequency/current limit points from the motor
nameplate or motor datasheet 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
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
Function:
motor thermal protection.
Function:
NOTICE
[ 0 - 1000.0
Hz]
Valid for FC 302 only.
Only visible if parameter 1-90 Motor
Thermal Protection is set to [20].
15 Hz 25 Hz
x 100 [%]
Parameter 1-99 ATEX ETR
interpol points current
[0]=40%
[1]=80%
[2]=100%
[3]=100%
50 Hz
MG33ML02