Danfoss VLT AQUA Drive Operating Instructions Manual page 84

8. How to programme the frequency converter
6-51 Terminal 42 Output Min Scale
Range:
*
0% [0 – 200%]
6-52 Terminal 42 Output Max Scale
Range:
*
100% [0 – 200%]
8
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 par. 6-51 to 0%
Output signal 20 mA is needed at 50 Hz (100% of range) - set par. 6-52 to 50%
84
Function:
See the drawing below for details.
Scale for the minimum output (0 or 4 mA) of the selected analogue signal at terminal 42.
Set the value to be the percentage of the full scale value range of the variable selected in par. 6-50.
Function:
Scale for the maximum output (20 mA) of the selected analog signal at terminal 42.
Set the value to be the percentage of the full scale value range of the variable selected in par. 6-50.
It is possible to get a value lower than 20 mA at full scale by programming values >100% by using a formula as
follows:
m A desired maximum current
20 /
m A
20
i e m A
. . 10 : × 100 % = 200 %
m A
10
®
MG.20.M4.02 - VLT is a registered Danfoss trademark
× 100 %
(See example 3).
®
VLT AQUA Drive
Operating Instructions