Specifications

Core Software Operation
ADDvantage-32 PLUS ● AC to DC Power Converter
3-21
3.9 ANALOG OUTPUT FUNCTIONS
X*** Parameters Y*** Parameters
X***:OUTPT 1 CAL Y***:ANLG OUT 1
X***:OUTPT 1 ZER Y***:ANLG OUT 2
X***:OUTPT 2 CAL Y***:ANLG OUT 3
X***:OUTPT 2 ZER Y***:ANLG OUT 4
X***:OUTPT 3 CAL
X***:OUTPT 3 ZER
X***:OUTPT 4 CAL
X***:OUTPT 4 ZER
Analog outputs read information from the analog data table, scale it, and produce a
-10 VDC to +10 VDC output signal. Each analog output is configurable to any data table
value. The output is then scaled by the following function:
Output VDC = (Data Table Value + X***:OUTPUT 1 ZERO) X***:OUTPT 1 CAL
For example, to generate a -10 VDC to +10 VDC signal from the second analog output of
the ADDvantage-32 PLUS microprocessor board which represents actual speed
(0 - 2500 FPM), perform the following:
1. Find A***:ACT SPEED in the analog data table.
2. Configure Y***:ANLG OUT 2 to A***:ACT SPEED. This will send the output
to the second analog output.
3. Find the calibration values as follows:
-10VDC=( 0 FPM+X***:OUTPUT 1 ZERO)(X***:OUTPT 1 CAL)
+10VDC=(2500 FPM+X***:OUTPUT 1 ZERO)(X***:OUTPT 1 CAL)
Solving the above equations yields the following:
X***:OUTPT 1 CAL = .008 VDC/FPM
X***:OUTPT 1 ZERO = -1250 FPM