AN-52 Terminal 42 Output Max Scale
Range:
Function:
100
%
*
[0 -
200
%]
Scale for the maximum output (20 mA) of the
analog signal at terminal 42.
Set the value to be the percentage of the full
range of the variable selected in
parameter AN-50 Terminal 42 Output
Illustration 3.28 Output Current vs Reference
Variable
It is possible to obtain a value lower than 20 mA
at full scale by programming values >100% by
using 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 = 0–50 Hz.
Output signal 0 mA or 4 mA is needed at 0 Hz (0% of
range). Set
parameter AN-51 Terminal 42 Output Min Scale
to 0%.
Output signal 20 mA is needed at 50 Hz (50% of range).
Set
parameter AN-52 Terminal 42 Output Max Scale
to 50%.
Illustration 3.29 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 AN-51 Terminal 42 Output Min Scale
to 50%.
Output signal 20 mA is needed at 100% (75% of range).
Set
parameter AN-52 Terminal 42 Output Max Scale
to 75%.
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 AN-51 Terminal 42 Output Min
to 0%.
Output signal 10 mA is needed at maximum reference
(100% of range). Set
parameter AN-52 Terminal 42 Output
to 200%.
(20 mA/10 mA x 100%=200%).
Illustration 3.30 Example 3
AN-53 Terminal 42 Output Bus Control
Range:
Function:
0 %
*
[0 - 100 %] Holds the level of output 42 if controlled by
bus.
AN-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 AN-50 Terminal 42 Output
, the output
is preset to this level if a fieldbus timeout
occurs.
Parameter Description
74
03/2016 All rights reserved.
DET-620D
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