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184 UDC 3300 Controller Product Manual 4/00
8-segment
characterization
This is available as part of the Math Algorithm option. Two 8- selections
can made in Section 3 – Configuration; Set Up group ALGORTHM,
under function prompts:
8SEG CH1
Xn VALUE
Yn VALUE
8SEG CH2
Xn VALU2
Yn VALU2
An 8-segment characterizer can be applied to either Input 1, Input 2,
Output 1, or Output 2. When Input 1 or Input 2 is used, the selected
input’s Ratio and Bias are applied to the Xn values.
When one of the loop outputs is selected, the Xn Values are the output
from the control algorithm, and the Yn Output is the final control element
action.
An example of 8-segment characterization is shown in Figure 4-2.
Totalizer function
A Flow Totalizer is available as part of the Math Algorithm option. This
calculates and displays the total flow volume being measured by Input 1.
Alternatively, it can be applied to either Input Algorithm 1 or Input
Algorithm 2 to totalize the compensated flow rate being calculated by the
algorithm.
The totalizer displays the current totalized flow value (up to seven digits
maximum). Seven scaling factors are available (from one to one million).
The desired scaling factor is applied to the calculated value to extend the
maximum total flow range that can be displayed.
Five integration rates are available to match the totalizer rate to the rate
of flow being measured. The rates are:
Engineering units (EU) per second
EU per minute
EU per hour
EU per day
Millions of units per day
The totalizer value is stored in nonvolatile memory once every eight
hours. If power is lost while the totalizer is in operation, the current value
of the totalizer will be lost. When power is restored, the totalizer will
start operation for the last value stored in nonvolatile memory. The Σ
(Sigma) display will blink to indicate this condition. Reset the totalizer.
The totalizer can be reset from the keyboard whenever desired. The
totalizer should always be reset to initialize the counters whenever it is
enabled, otherwise, the “Σ” (Sigma) display will blink.
Refer to Section 3 – Configuration, Set Up group ALGORTHM, function
prompt TOTALIZER to select an application, and the function prompts
that follow TOTALIZER to enter your scale factor and rate of integration.