Danfoss VLT AutomationDrive FC 300 Programming Manual page 96

Parameter Descriptions
6-70 Terminal X45/1 Output
Option: Function:
[142] Bus ctrl. 4-54 Warning Reference Low defines the
4-20mA, behaviour of the analog output in case of bus
timeout time-out.
[150] Max Out In relation to 4-19 Max Output Frequency.
Freq
4-20mA
6-71 Terminal X45/1 Output Min Scale
Range: Function:
0.00% [0.00 - Scale the minimum output of the selected
*
200.00%] analog signal at terminal X45/1, as a
percentage of the maximum signal value.
E.g. if 0mA (or 0hz) is desired at 25% of the
maximum output value, then programme
25%. Scaling values up to 100% can never
be higher than the corresponding setting
in 6-72 Terminal X45/1 Max. Scale.
6-72 Terminal X45/1 Output Max Scale
Range: Function:
100% [0.00 - Scale the maximum output of the selected
*
200.00%] analog signal at terminal X45/1. Set the value
to the maximum value of the current signal
output. Scale the output to give a current
lower than 20mA at full scale; or 20mA at an
output below 100% of the maximum signal
value. If 20mA is the desired output current at
a value between 0 - 100% of the full-scale
output, programme the percentage value in
the parameter, i.e. 50% = 20mA. If a current
between 4 and 20mA is desired at maximum
output (100%), calculate the percentage value
as follows (example where desired max. output
is 10mA):
I RANGE mA
I DESIRED MAX mA
mA
20 − 4
=
10 mA
Current
[mA]
20
0/4
0% Analogue Analogue
output Min Output Max
Scale Scale
par. 6-71 par. 6-72
FC 300 Programming Guide
x 100 %
x 100 % = 160 %
100% Variable for
output
example:Speed
[RPM]
®
MG.33.MB.02 - VLT is a registered Danfoss trademark
6-73 Terminal X45/1 Output Bus Control
Range: Function:
0.00% [0.00 - 100.00%] Holds the level of Analog Output 3
*
(terminal X45/1) if controlled by bus.
6-74 Terminal X45/1 Output Timeout Preset
Range: Function:
0.00% [0.00 - Holds the preset level of Analog Output
*
100.00%] 3 (terminal X45/1).
In case of a bus timeout and a timeout
function is selected in 6-70 Terminal
X45/1 Output the output will preset to
this level.
3.8.9 6-8* Analog Output 4 MCB 113
Parameters for configuring the scaling and limits for analog
output 4. Terminal X45/3 and X45/4. Analog outputs are
current outputs: 0/4 – 20mA. Resolution on analog output is
11 bit.
6-80 Terminal X45/3 Output
Option: Function:
Select the function of Terminal X45/3 as an
analog current output.
[0] No operation Same selections available as for 6-70 Terminal
*
X45/1 Output
6-81 Terminal X45/3 Output Min Scale
Option: Function:
[0.00%] 0.00 - Scales the minimum output of the selected
*
200.00% analog signal on terminal X45/3. Scale the
minimum value as a percentage of the
maximum signal value, i.e. 0mA (or 0hz) is
desired at 25% of the maximum output
value and 25% is programmed. The value
can never be higher than the
corresponding setting in 6-82 Terminal
X45/3 Max. Scale if value is below 100%.
This parameter is active when option
module MCB 113 is mounted in the
frequency converter.
3 3
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