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38 UDC3200 Universal Digital Controller Operator Manual 04/08
Function
Prompt
Lower Display
Selections or
Range of Setting
Upper Display
Parameter Definition
ALG1 INB
INPUT 1
INPUT 2
OUTPUT
ALGORITHM 1, INPUT B SELECTION will represent one of the
available selections.
Input 1
Input 2
Output – Should not be used for Three Position Step Control
applications)
ALG1 INC
NONE
INPUT 1
INPUT 2
OUTPUT
ALGORITHM 1, INPUT C SELECTION will represent one of the
available selections.
None
Input 1
Input 2
Output – Should not be used for Three Position Step Control
applications)
PCT CO
0.020 to 0.350
(fractional percent
of CO)
PERCENT CARBON is only applicable when Carbon Potential is
selected. Enter the value in percent carbon monoxide that is
applicable for the enriching gas used in fractional form.
FOR EXAMPLE:
Natural Gas = 20.0 % CO, then setting is 0.200
Propane Gas = 23.0 % CO, setting is 0.230
ALG1 BIAS
-999 to 9999
floating (in
engineering units)
INPUT ALGORITHM 1 BIAS—Does not apply to selections:
FFWRD, FFWDMU, HISEL or LOSEL.
PCT H2
1.0 to 99.0 (% H
2
)
HYDROGEN CONTENT FOR DEWPOINT is only applicable when
Dewpoint is selected. Enter a value for the percentage of Hydrogen
content that is applicable.
Math Algorithm Notes:
1. Calculation ranges for the Math Algorithms are set via CALC HI and CALC LO parameters and
are between –999. and 9999. The SP High and Low values (SP Range) are independent of
these settings and can be any value between –999. and 9999.
2. The CALC HI and CALC LO values determine the range limits for the SP High and Low values
for the Weighted Average, Summer, Hi Select and Low Select algorithms.
3. If the Ratio for Input 2 is set to 0.0, then a constant value may be used for the Input 2 value via
the Input 2 Bias setting. For this configuration, the Input 2 low range and the Sooting diagnostic
messages are disabled.