ABB SM2000 User Manual Supplement page 6

...2 MATH CONFIGURATION
2.8 Creating Math Blocks – Figs. 2.2 and 2.3
System Configuration
Common Process Group 1
Configuration Group 1 Channels
Group 2
I/O Functions
Channels Modules
Math Blocks
Note. For information on accessing the configuration level, refer to Section 4.1 of the User Guide.
Source Id
Functions
– see
Table 2.4
Operators
Clears the whole equation
Deletes the function, operator or
source to left of cursor
Return to Main Math Block screen
4
Process
Group 2
Logic
Equations
Fig. 2.2 Launching the Math Block Editor (Math Pad)
Analog Sources
None
Analog i/p A1
Analog i/p A2
Analog i/p A3
Analog i/p A4
Analog i/p A5
Analog i/p A6
Source Configuration
Source Id
None
Analog i/p A1
Analog i/p A2
Analog i/p A3
Analog i/p A4
Analog i/p A5
Analog i/p A6
Math Blocks
Math 1
Math2 Math3
Equation
Rst Src/Dgtl Src 1
Digital Source 2/3
Engineering range
Short tag
Long tag
Digital Sources
Source Id
None
Digital Source 1
Digital Source 2
Digital Source 3
Constants
Enter constant (Ð999 to 9999)
54.33
see Note 2.
Analog I/P
Input Type 4.0 - 20.0 mA
Engineering range
0 to 20000 Litres/sec
Short tag 8 Character
Long tag
20 Characters
Filter time constant
In seconds
Fault detect level (%) 110%
Broken sensor detection Upscale
see Section 4.6.2 of the User Guide
Fig. 2.3 Math Pad
Select math blocks
7 to 12
--->
Math4 Math5 Math6
Launches Math
a1+52.4*Log(a2)-md2
Pad – see Fig 2.3
Digital i/p D6, None
Digital i/p D1, None
-90.0 - 999.9
InltHd
Inlet Head Calculation
Note 1. Digital sources
must first be assigned to
a digital input – see Table
2.3.
Note 2. Use the
button to change the
configuration of the
selected
source, without the
need to exit the maths
block sequence.
channel