United Security Products AVD-45c Manual Pagina 114

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100 UDC 6300 Process Controller Product Manual 1/03
4.7 Advanced Math Parameters Set Up Group, Continued
Table 4-6 Advanced Math Group Definitions, continued
Lower Display
Prompt
Upper Display
Range of Setting
or Selection
Parameter
Definition
GATEnTYPE
(continued)
B LT A (B<A)
B LT A (B<A) - B less than A is an Analog
Comparator with two Analog Inputs and one Digital
(On/Off) Output. A fixed Hysteresis Band of 0.1% of
Input B span is applied to these comparators.
INPUT A
INPUT B
OUTPUT (Y)
B<A
Y = 1 if B<A
Y = 0 if (B + .001 * Span of B) >A
Example: (B<A)
B = 900 (Range 0 – 1000)
900 – (1000 * .001) = 899
If A >900, then Output is ON(1)
If A <899, then Output is OFF (0)
B GT A (B>A)
B GT A (B>A) - B greater than A is an Analog
Comparator with two Analog Inputs and one Digital
(On/Off) Output. A fixed Hysteresis Band of 0.1% of
Input B span is applied to these comparators.
INPUT A
INPUT B
OUTPUT (Y)
B>A
Y = 1 if B>A
Y
= 0 if (B + .001 * Span of B) <A
Example: (B>A)
B = 900 (Range 0 – 1000)
900 +(1000 * .001) = 901
If A <900, then Output is ON(1)
If A >901, then Output is OFF (0)
Table 4-6 continued on next page
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