Danfoss VLT Refrigeration Drive FC 103 Programming Manual page 86

Parameter Description
20 mA
3 3
0/4 mA
0%
0Hz
Illustration 3.32 Example 1
Example 2:
Variable = feedback, range = -200% to +200%.
Range needed for output = 0–100%.
Output signal 0 mA 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%.
20 mA
0/4 mA
0%
-200%
Illustration 3.33 Example 2
Example 3:
Variable value = reference, range = minimum reference–
maximum reference
Range needed for output = minimum reference (0%)–
maximum reference (100%), 0–10 mA.
Output signal 0 mA or 4 mA is needed at minimum
reference. Set parameter 6-51 Terminal 42 Output Min Scale
to 0%.
Output signal 10 mA is needed at maximum reference
(100% of range). Set parameter 6-52 Terminal 42 Output
Max Scale to 200%.
(20 mA/10 mA x 100%=200%).
84
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VLT Refrigeration Drive FC 103
50% 100%
50Hz 100Hz
50% 75% 100%
0% +100% +200%
Danfoss A/S © 05/2016 All rights reserved.
20 mA
10 mA
0/4 mA
0%
100%
Min ref Max ref
Illustration 3.34 Example 3
6-53 Terminal 42 Output Bus Control
Range: Function:
0 % [0 - 100 %] Holds the level of output 42 if controlled by
*
bus.
6-54 Terminal 42 Output Timeout Preset
Range: Function:
0 % [0 - Holds the preset level of output 42.
*
100 %] If a timeout function is selected in
parameter 6-50 Terminal 42 Output, the output
is preset to this level if a fieldbus timeout
occurs.
3.8.8 6-6* Analog Output 2 MCB 101
Analog outputs are current outputs: 0/4–20 mA. Common
terminal (terminal X30/8) is the same terminal and
electrical potential for analog common connection.
Resolution on analog output is 12 bit.
6-60 Terminal X30/8 Output
Same options and functions as parameter 6-50 Terminal 42
Output.
6-61 Terminal X30/8 Min. Scale
Range: Function:
0 % [0 - Scales the minimum output of the selected analog
*
200 %] signal on terminal X30/8. Scale the minimum value
as a percentage of the maximum signal value, that
is 0 mA (or 0 Hz) is required at 25% of the
maximum output value and 25% is programmed.
The value can never exceed the corresponding
setting in parameter 6-62 Terminal X30/8 Max. Scale
if the value is below 100%.
This parameter is active when VLT
Purpose I/O MCB 101 is mounted in the frequency
converter.
200%
Max ref X 20/10
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General
MG16H202