,
Network No. 1
-
Simple
Set Point Control
Network #l compares the value from an
analog input in register 3001 with a preset
value in register 4009. If the input value is
greater than or equal to the preset value,
coil 0001 is ON. Conversely, if the input is
less than or equal to the preset value, coil
0002 is ON. This comparison is performed
on every Micro-84’” scan.
Natwork No. 2
.
Set Point Control
Network #2 performs a similar set point
function as Network #l, but both coils do
not go ON when the input value in register
3001 is equal to the preset value in register
4009. Coil 0002 is ON only when the input
is less than the preset value. Greater than
or equal input values turn on coil 0001.
Alternatively, a normally closed 0002 con-
tact positioned prior to coil 0001 (while
removing contact 0001) will prevent equal
values from turning ON coil 0001.
Network No, 3
l
“Dead Band” Set Point
Control
Network #3 will turn ON coil 0001 when the
analog input value is less than or equal to
the preset value in register 4009. Coil 0002
is ON when the input value is greater than
or equal to the preset in register 4011. The
preset value in register 4011 is greater than
the preset value in register 4009. Values
between these will turn both coils OFF.
Network #4 performs the inverse of Net-
work #3. Coil 0001 is ON only when the
analog input is between or equal to preset
values in registers 4009 and 4011. The
preset value in register 4011 is greater than
the preset value in register 4009.
+ GOULD
Electronics
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