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MODULE #5 - PROGRAM INTEGRATOR/TOTALIZER
Programming for the integrator/totalizer consists of four programming
steps: totalizer decimal point position, time base, scale factor and low
temperature disable. Note that the decimal point position of the
integrator/totalizercanbesetindependentofthedecimalpointpositionofthe
input. The totalizer value will roll over and flash when the total exceeds,
999999 or -99999, indicating an overflow condition. Reverse signal input
willcausethetotalizervaluetocountintheoppositedirectionandeventually
no longer be in an overflow condition.
PROGRAM DECIMAL POINT POSITION FOR THE
INTEGRATOR/TOTALIZER
The decimal point position for the totalizer are as follows:
“dECPNt” < > “0”
“0.0”
“0.00”
“0.000”
“0.0000”
PROGRAM INTEGRATOR/TOTALIZER TIME BASE
The time base determines the rate at which readings increase. The
integrator/totalizerdisplayisupdated
2
1
2
timespersecondregardlessoftime
baseselected,butlonger timebasesdecreasethemagnitudeof eachincrease.
Thethreetimebasesarepersecond,perminuteandperhour.Aconstantinput
temperature of 100°, for example, would integrate/totalize to 100° in one
second(withaTBof1sec.),100°inoneminute(withaTBof1min.),and100°
in one hour (with a TB of 1 hr.). (Note: Input changes can be made
synchronous to the display by programming E1 or optional E2-CON pin for
function13,Instrumentreadingsynchronization.)Amultiplyingscalefactor
may be used to span the standard time ranges (or divide if scale factor < 1).
The following equation expresses the integration/totalization process.
S.F. =
D.T.
x
T.B.
x
D.T.D.P.
I.D. TIME I.D.D.P.
S.F. = Programmable Scale Factor
D.T. = Desired Totalizer value for a
fixed time duration
T.B. = Programmable Time Base
TB = If Program Select Number Chosen Is:
Enter in Formula
“0” for sec. 1
“1” for min. 60
“2” for hr. 3600
I.D. = Input Display Value
TIME = Actual Time period in seconds
D.T.D.P. = Desired Totalizer Value Decimal Point
Enter in Formula
01
0.0 10
0.00 100
0.000 1000
0.0000 10000
I.D.D.P. = Input Display Value Decimal Point
Enter in Formula
01
0.0 10
“tbASE” < > “0” - per second
“1” - per minute
“2” - per hour
PROGRAM THE INTEGRATOR/TOTALIZER SCALE FACTOR
As explained in the previous programming step, a multiplying scale factor
can be used to scale the update rate as required. This may be used to span the
standardranges.Ascalefactorof“1.000”hasnoeffectonthestandardranges.
“SCLFAC” < > “0.001” to “100.000”
PROGRAM THE LOW-END CUTOUT (low temperature level
disable)
In order to prevent false integration/totalization in situations where
integration/totalization is undesirable, a programmable setpoint can be used
todisableintegration/totalizationwhentheinputtemperaturefallsbelowthis
low-end cutout level.
“Lo-cut” < > “-999” to “9999”
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