Totalizer Configuration - ABB C1300 User Manual

C1300
Advanced circular chart recorder

3.7 Totalizer Configuration

Overview.
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Up to four, 9-digit totalizers – assignable to any pen, analog input or math block (if math software option enabled by
installation of the appropriate software key).
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Count up or count down.
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Automatic count rate calculation – wherever possible, the recorder calculates the count rate automatically according to
source units, totalizer units and engineering range, from 0.0001 to 99.9999 counts/second.

External counter pulse – can be used to energize relays or digital outputs (a maximum of 4 pulses per second are generated).

Wrap function – with external wrap pulse used to energize relays or digital outputs.
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Programmable preset and predetermined count values – for (batch) flow total.

Adjustable cut-off values.
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Operator level reset and stop/go.

Digital signal reset and stop/go.
When enabled by installation of the appropriate software key, the totalizer software provides indication and recording of flow rates
from input signals with linear, square law or power law characteristics. Totalization is available for each channel and can be switched
on or off as required.
The flow total for any channel can be viewed on the same display screen as the input (pen) channel to which it is assigned. The flow
total can also be reset using the control keys on the associated faceplate. An additional internal 'Secure' total is also provided that
can be reset only in the Totalizer Configuration level.
External counters with their own power supplies can be driven using 4 relay and digital output module options.
Count Rate
Totalizers are normally used in flow applications and their purpose is to summate the volume of process fluid passing the point of
measurement. Totalizers have no relationship to time and continue to count up or down (dependant on setting) until instructed to
reset. A trip meter on a typical family car is an example of a basic totalizer – the meter counts and displays the distance travelled by
the vehicle until reset by the driver. In this example, the speedometer and trip meter read in the same unit of distance.
Flow totalization is more complex than that of a trip meter. In flow totalization, the flow recorder typically measures the instantaneous
value in one flow unit whilst the totalizer counts in a larger flow unit. When configuring a totalizer, a count rate must be calculated and
entered to compensate for the difference between the totalized measurement unit and the instantaneous measurement unit.
Where possible, the recorder calculates automatically the count rate for the most popular measurement units, e.g. gallons, cubic feet,
liters and cubic meters. When configuring a totalizer, first ensure that the unit of measurement (Channel Units) selected for the
channel to which the totalizer is assigned is a volumetric unit (i.e. quantity per unit of time, for example gallons per hour) – see Section
3.5, page 24. Finally, enter the required Totalizer unit of measurement. If the recorder holds the relationship data between the selected
measurement and totalizer units, 'Automatic' is displayed under the count rate to indicate that it has been set automatically. If the
relationship data is not in the recorder's look-up table, 'Manual' is displayed and the count rate must be set manually – see next
page.
IM/C1300 Rev. J
3 Configuration
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