Danfoss VLT AQUA Drive FC 202 Programming Manual page 87

Parameter Description
6-50 Terminal 42 Output
Option: Function:
[137] Speed 0 - Speed High Limit (4-13 Motor Speed High
4-20mA Limit [RPM] and parameter 4-14 Motor Speed
High Limit [Hz])
[138] Torque
4-20mA
[139] Bus ctrl. 0 - 100%, (0-20 mA)
[140] Bus ctrl. 0 - 100%
4-20 mA
[141] Bus ctrl t.o. 0 - 100%, (0-20 mA)
[142] Bus ctrl t.o. 0 - 100%
4-20mA
[143] Ext. CL 1 0 - 100%
4-20mA
[144] Ext. CL 2 0 - 100%
4-20mA
[145] Ext. CL 3 0 - 100%
4-20mA
[146] Cascade
Ref.
4-20mA
[147] Main act
val 0-20mA
[148] Main act
val 4-20mA
[150] Out frq 0-
Fmax
4-20mA
[254] DC Link With this parameter selected, the terminal
0-20mA output represents the scaled DC Link voltage.
Table 3.13 shows the relationship between
the DC Link voltage and the terminal output.
DC Link voltage (V)
V <= undervoltage limit
V >= overvoltage limit
Voltage within range:
undervoltage < V <
overvoltage
Table 3.13 Relationship between the DC
Link voltage and the terminal output
Table 3.14 shows the undervoltage and
overvoltage limits for different frequency
converter sizes.
MG20O702
Programming Guide
6-50 Terminal 42 Output
Option:
[255] DC Link
4-20mA
NOTICE
Terminal
Values for setting the Minimum Reference is found in
output
parameter 3-02 Minimum Reference and values for
0 %
maximum reference in parameter 3-03 Maximum
100 %
Reference.
Linearly
interpolated
6-51 Terminal 42 Output Min Scale
Range:
0 %
*
%]
Danfoss A/S © Rev. 2014-01-21 All rights reserved.
Function:
Frequency Undervoltage
Converter Limit
Size
T2/S2 185 V
T4/S4 373 V
T6/T7 553 V
Table 3.14 Undervoltage and overvoltage
limits for different frequency converter
sizes
I
1
20
2
10
0
0 400
1 Analog output.
2 Undervoltage limit.
3 Overvoltage limit.
Illustration 3.31 Example: The analogue
output of Terminal 42 on the T4 frequency
converter with option [254] DC Link
0-20mA selected
The function is the same as [254] DC Link
0-20mA.
Function:
[0 - 200 Scale for the minimum output (0 or 4 mA) of
the analog signal at terminal 42.
Set the value to be the percentage of the full
range of the variable selected in
parameter 6-50 Terminal 42 Output.
Overvoltage
Limit
3
410 V
855 V
1130 V
3
800 1200 V
DC
85
3