Danfoss VLT FC 100, Operating Instructions Manual, Page: 121 / 193

6-52 Terminal 42 Output Max Scale
Range: Function:
100.00 %* [0.00 - 200.00 %] 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 par. 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
It is possible to get a value lower than 20mA at full scale by programming values >100% by us-
ing 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 = 0-50Hz
Output signal 0 or 4mA is needed at 0Hz (0% of range) - set
par. 6-51
Terminal 42 Output Min Scale
to 0%
Output signal 20mA is needed at 50Hz (50% of range) - set
par. 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 4mA is needed at 0% (50% of range) - set
par. 6-51
Terminal 42 Output Min Scale
to 50%
Output signal 20mA is needed at 100% (75% of range) - set
par. 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 4mA is needed at Min ref - set par. 6-51
Terminal 42
Output Min Scale
to 0%
Output signal 10mA is needed at Max ref (100% of range) - set
par. 6-52
Terminal 42 Output Max Scale
to 200%
(20mA/10mA x 100%=200%).
6 How to Programme
VLT HVAC Drive High Power Operating In-
structions
120
MG.11.F3.02 - VLT ® is a registered Danfoss trademark
6