BENSHAW RediStart EXEXMVRMX3 Series, User Manual

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Analog Output Span I/O 22
LCD Display
Range 1 – 125 % (Default: 100)
Description The analog output signal can be scaled using the Analog Output Span parameter. For a 0-10V output or
0-20mA output, a 100% scaling outputs the maximum voltage (10V) or current (20mA) when the selected
output function requests 100% output. A scale of 50% outputs 50% voltage/current when the analog output
function requests a 100% output.
z
NOTE: For a 4-20mA output, set the Analog Output Span to 80% and the Analog Output Offset to 20%.
z
NOTE:
The output does not exceed 100% (10V or 20mA).
Example: 0% output => 4mA, 100% output => 20ma
See Also
Analog Output Offset parameter (I/O 23) on page 95.
Analog Output Offset I/O 23
LCD Display
Range 0 – 99 % (Default: 0)
Description
The analog output signal can be offset using the Analog Output Offset parameter. A 50% offset outputs a
50% output (5V in the 10V case) when 0% is commanded. If the selected variable requests 100% output, the
span should be reduced to (100 minus offset) so that a 100% output request causes a 100% output voltage (x%
(100-x)%span)=100%.
z
NOTE:
For a 4-20mA output, set the Analog Output Span to 80% and the Analog Output Offset to 20%.
See Also Analog Output Span parameter (I/O 22) on page 95.
95
6 - PARAMETER DESCRIPTION
Analog
Output
Selected Output
value = 100%
Aout Offset
= 20%
10V /
20mA
Selected Output
value = 0%
0 V / 0mA
Aout Span =
80%
2V / 4mA
I/O: Aout Offset
23
0 %
I/O: Aout Span
22
100 %