ABB ControlMaster CM15 User Manual page 54

ControlMaster CM15
Universal process indicator
...Functions / ...Math Blocks / ...Block Type
Real Time Average
Max Hold
Min Hold
Multiplexer
Square Root
52
1
/ DIN
8
Calculates the average value of a parameter over a user-configurable duration. The output of the
math block is updated at the end of the set duration only. A reset signal can be configured to
restart the calculation of the average value.
The average value is stored in case of power failure. If the duration of the power failure is longer than
the Average Duration (see page 54), the math block output value is set to zero.
The math block output represents the highest value of the signal since it was reset.
The math block output represents the lowest value of the signal since it was reset.
Enables 1 of 2 analog signals or constant values to be selected using a digital signal.
A
B
Output
Select
Calculates the square root of the selected sources value. If the input is less than 0, the output is
set to zero and the math block output state set to invalid.
0 1
Select
A B
Output
7 Advanced Level
IM/CM/I–EN Rev. D