Danfoss VLT AQUA FC 202 User Manual

6-52 Terminal 42 Output Max Scale
Range: Function:
100
%*
[0 -
200
%]
Scale for the maximum output (20mA) 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.
130BA075.12
(mA)
0%
20
0/4
100%
Current
Analogue
output
Min Scale
par. 6-93
Variable
for
output
example:
Speed
(RPM)
Analogue
Output
Max Scale
par. 6-94
Illustration 5.19
It is possible to get a value lower than 20mA at
full scale by programming values >100% by using
a formula as follows:
20 mA / desired maximum current ×100%
i . e . 10 mA :
20 mA
10 mA
×100% = 200%
Example 1:
Variable value= OUTPUT FREQUENCY, range = 0-100 Hz
Range needed for output = 0-50 Hz
Output signal 0 or 4mA is needed at 0 Hz (0% of range) -
set parameter 6-51 Terminal 42 Output Min Scale to 0%
Output signal 20 mA is needed at 50 Hz (50% of range) -
set parameter 6-52 Terminal 42 Output Max Scale to 50%
0/4 mA
20 mA
50% 100%0%
50Hz 100Hz0Hz
130BA858.10
Illustration 5.20
Example 2:
Variable= FEEDBACK, range= -200% to +200%
Range needed for output= 0-100%
Output signal 0 or 4 mA is needed at 0% (50% of range) -
set parameter 6-51 Terminal 42 Output Min Scale to 50%
Output signal 20 mA is needed at 100% (75% of range) -
set parameter 6-52 Terminal 42 Output Max Scale to 75%
0/4 mA
20 mA
50% 75% 100%0%
0% +100% +200%-200%
130BA856.10
Illustration 5.21
Example 3:
Variable value= REFERENCE, range= Min ref - Max ref
Range needed for output= Min ref (0%) - Max ref (100%),
0-10 mA
Output signal 0 or 4 mA is needed at Min ref - set
parameter 6-51 Terminal 42 Output Min Scale to 0%
Output signal 10 mA is needed at Max ref (100% of range)
- set parameter 6-52 Terminal 42 Output Max Scale to 200%
(20 mA/10 mA x 100%=200%).
20 mA
10 mA
0/4 mA
100% 200%
0%
Max ref Max ref X 20/10Min ref
130BA857.10
Illustration 5.22
5.2.8
20-** Drive Closed Loop
This parameter group is used for configuring the closed
loop PID Controller, that controls the output frequency of
the frequency converter.
20-12 Reference/Feedback Unit
Option: Function:
[0] -
[1] %
[5] PPM
[10] 1/min
[11] RPM
[12] Pulse/s
[20] l/s
How to programme the freque... VLT AQUA Drive FC 202 Operation Instructions
MG20P402 - Rev. 2013-12-16 101
5 5

Danfoss VLT AQUA FC 202 Specifications

General

Brand	Danfoss
Model	VLT AQUA FC 202
Category	DC Drives
Language	English