Apollo Intelligent Meter Series IMY Manual de usuario descargar pdf (Pagina 15)

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/totalizer can be set independent of the decimal point position of the

input. The totalizer value will roll over and flash when the total exceeds,

999999 or -99999, indicating an overflow condition. Reverse signal input

will cause the totalizer value to count in the opposite direction and eventually

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/totalizer display is updated

times per second regardless of time

base selected, but longer time bases decrease the magnitude of each increase.

The three time bases are per second, per minute and per hour. A constant input

temperature of 100°, for example, would integrate/totalize to 100° in one

second (with a TB of 1 sec.), 100° in one minute (with a TB of 1 min.), and 100°

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

function 13, Instrument reading synchronization.) A multiplying scale factor

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.

T.B.

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

0.0 10

0.00 100

0.000 1000

0.0000 10000

I.D.D.P. = Input Display Value Decimal Point

Enter in Formula

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

standard ranges. A scale factor of “1.000” has no effect on the standard ranges.

“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

to disable integration/totalization when the input temperature falls below this

low-end cutout level.

“Lo-cut” < > “-999” to “9999”

-13-

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Apollo Intelligent Meter Series IMY Manual de usuario Pagina 15

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