Micromod MOD: Modcell 2050R Users Guide - Manual (Page 183)

IB-23C650
TOTALIZER OPERATION
TOTALIZER OPERATION
DESCRIPTION OF INTEGRATION/TOTALIZATION FUNCTION
The integrator/totalizer provides the capability to integrate process signals and
display totalized values on the front panel. Signals which have a linear
relationship can be integrated and totalized directly. Flow signals, which are
proportional to differential pressure, require the application of square law
linearization which is available as a standard function. Integration/totalization
also applies to thermocouple or RTD inputs (to count BTUs, calories, etc.).
The integrator/totalizer algorithm converts process signals representing
engineering units in terms of units per unit time (e.g., gal/hr) into counts which
are summed to provide a continuous readout of the total units. The
integrator/totalizer can be configured to accept rate time bases in hours,
minutes, or seconds. Alarm relays (A, B and C) can be used to signal the
point at which the totalized value reaches the predetermined count.
The totalized value can be selected for readout on the lower engineering
display using the control keys. When the totalizer display is selected, the total
value is continuously displayed until the operator selects another display. The
totalized number is a seven digit number; leading zeros are not suppressed.
Integrator/totalizer parameters are configured using the front panel keys in the
same manner as for other parameters. Features which can be configured are
as follows:
• Preset Value (0 to 9,999,999)
The value from which the totalizer starts its count.
• Predetermined Count (0 to 9,999,999)
The value at which the totalizer automatically resets when the wrap
function is selected. Also, optional relays trip when the count reaches the
predetermined count.
• Wrap Function
When selected, the wrap function causes the totalizer to automatically
reset to the preset value and start over each time the predetermined
count is reached.
• Threshold Value
The process input value below which the signal is not totalized.
• Totalizer Type
This feature permits the totalizer to be set up to count either up or down.
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