Danfoss vlt FC 102 - Page 114

0/4 mA
20 mA
50% 100%0%
50Hz 100Hz0Hz
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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%.
0/4 mA
20 mA
50% 75% 100%0%
0% +100% +200%-200%
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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%).
20 mA
10 mA
0/4 mA
100% 200%
0%
Max ref Max ref X 20/10Min ref
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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 - 100 %] Holds the preset level of output 42.
If a timeout function is selected in
parameter 6-50 Terminal 42 Output,
the output is preset to this level if a
eldbus timeout occurs.
6-55 Analog Output Filter
Option: Function:
The following readout parameters
from selection in
parameter 6-50 Terminal 42 Output
have a lter selected when
parameter 6-55 Analog Output Filter
is on:
Selection 0–20
mA
4–20
mA
Motor current
(0–I
max
)
[103] [133]
Torque limit (0–
T
lim
)
[104] [134]
Rated torque (0–
T
nom
)
[105] [135]
Power (0–P
nom
) [106] [136]
Speed (0–
Speed
max
)
[107] [137]
Table 3.17 Readout Parameters
[0] * O Filter o.
[1] On Filter on.
Parameter Descriptions
VLT
®
HVAC Drive FC 102
112 Danfoss A/S © 10/2019 All rights reserved. M0010001
33