ABB SM2000 User Manual Supplement page 18

...3 LOGIC CONFIGURATION
3.3 Creating Logic Equations – Fig. 3.2
System Configuration
Common Process
Configuration Group 1
Group 2
I/O
Channels
Modules
Math Blocks
Eqn1
Eqn2 Eqn3 Eqn4
Operand / Operator 1
Operator/Operand Conditions
Operand
Invert Condition
Operator
20 Characters
Eqn Tag & Log Enable
Equation Tag/Log Enable
Equation Tag
Log enable
16
Group 1 Process
Channels Group 2
Functions Logic
Equations
Fig. 3.2 Launching the Equation Editor
Eqn5 Eqn6 --->
End
Digital i/p A1
Non-inverted
and
Reservoir Pump On
Yes
Group 1 Configuration
Eqn 1
Eqn2 Eqn3
Operand/Operator 1
Operand/Operator 2
Operand/Operator 3
Operand/Operator 4
Log Enable & Eqn Tag
Select the logic equation to create or modify
Specify the first operand – can be any digital signal.
Invert the signal, if required.
Select an operator for the next input
OK
l l A n i p u s t h g i h
A n ( y r o A ) l l n i p t u ) s ( o l
A n ( y r o A ) l l n i p t u ) s ( h
N o n i p u s t h g i h
A n , y b t u n t o A , l l n i p t u
Table 3.1 Logic Operators
Repeat these steps until the equation is complete.
Set the equation tag (20 characters maximum) displayed in
alarm/event logs.
Allow changes in the equation's state to be recorded in the
Alarm event log.
OK
Select Logic
Equations 7 to 12
--->
Eqn4 Eqn5 Eqn6
Alarm State 1.1A and
Digital i/p D6, None Alarm State 1.2A or
Alarm State 1.1B or Digital i/p D6, None
Digital i/p C1, End
Inlet Head Calculation, off
A A A A A 0
n I n I n I n I n I p p p p p u u u u u s t s t s t s t s t
B B B B B 0
O O O O O p p p p p e e e e e a r a r a r a r a r o t o t o t o t o t s r s r s r s r s r
A N D 0
w N A N D 1
g i h O R 0
N O R 1
) s ( h g i h X O R 0
0 1 1
1 0 1
O O O O O u u u u u p t p t p t p t p t u u u u u s t s t s t s t s t
0 0 1
1 1 0
1 1 1
0 0 0
1 1 0