6-51 Terminal 42 Output Min Scale
Range:
Function:
0.00 %
*
[0.00 - 200.00
%]
Scale for the minimum output (0 or 4 mA)
of the analogue signal at terminal 42.
Set the value to be the percentage of the
full range of the variable selected in
6-52 Terminal 42 Output Max Scale
Range:
Function:
100.00
%
*
[0.00 -
200.00
%]
Scale for the maximum output (20 mA) of the
analog signal at terminal 42.
Set the value to be the percentage of the full
range of the variable selected in
.
130BA075.11
(mA)
0%
20
0/4
100%
Current
Analogue
output
Min Scale
par. 6-51
Variable
for
output
example:
Speed
(RPM)
Analogue
Output
Max Scale
par. 6-52
It is possible to get a value lower than 20 mA at
full scale by programming values >100% by
using a formula as follows:
20
mA / desired maximum current × 100 %
i.e. 10mA : 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 4 mA is needed at 0 Hz (0% of range) - set
6-51 Terminal 42 Output Min Scale
to 0%
Output signal 20 mA is needed at 50 Hz (50% of range) - set
6-52 Terminal 42 Output Max Scale
to 50%
0/4 mA
20 mA
50%
100%
0%
50Hz
100Hz
0Hz
130BA858.10
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
6-51 Terminal 42 Output Min Scale
to 50%
Output signal 20 mA is needed at 100% (75% of range) - set
6-52 Terminal 42 Output Max Scale
to 75%
0/4 mA
20 mA
50%
75%
100%
0%
0%
+100%
+200%
-200%
130BA856.10
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
6-51 Terminal 42 Output Min Scale
to 0%
Output signal 10 mA is needed at Max ref (100% of range) -
set
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 20/10
Min ref
130BA857.10
6-53 Terminal 42 Output Bus Control
Range:
Function:
0.00 %
*
[0.00 - 100.00 %] Holds the level of Output 42 if
controlled by bus.
Parameter Description
VLT
®
HVAC Drive Programming Guide
72
MG.11.CB.02 - VLT
®
is a registered Danfoss trademark
3
3
