Honeywell UDC3500 Product Manual page 233

8 Segment Characterizers
Characterizers are available as part of the Math Algorithm option. See Section 3.12.
8SEG CH1
Xn VALUE
Yn VALUE
8SEG CH2
Xn VALU2
Yn VALU2
An 8-segment characterizer can be applied to any Analog Input, Output 1, or Output 2.
When an Analog Input is used, the selected input's Ratio and Bias are applied to the Xn
values. The characterizers can be linked in order to provide a single 16-segment
characterizer.
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 an 8-segment characterizer can be found in Figure 3-2.
Totalizer
A Flow Totalizer is available as part of the Math Algorithm option. See Section 3.12..
This calculates and displays the total flow volume being measured by one of the analog
inputs. Alternatively, it can be applied to either Input Algorithm 1 or Input Algorithm 2
to totalize the compensated flow rate as being calculated by the selected 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.
Alarm on totalizer value
The alarm type configuration includes an Alarm on Totalizer value. This allows an alarm
setpoint value to be used to cause an alarm when exceeded. The alarm setpoint represents
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Monitoring and Operating the Controller
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