Rockwell Automation 9307 FactoryTalk EnergyMetrix - Manual (Page 22)

FactoryTalk EnergyMetrix Software
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Unit Setup
The Unit Setup screen provides menus that let you add, delete, and edit Value Types, Base
Units, and Units.
The FactoryTalk EnergyMetrix collection of base units includes many that are commonly
uses in energy management applications. The default collection of units is based on the
base units and includes a scaling factor which relates it to the base unit. For example, VA
(volt-amperes) is a Base unit, and kVA (kilo-volt-amperes) is a Unit, with a scaling factor
of 0.001.
Value types are used by the reporting and billing functions to aggregate values of a
specific type in one or more meters or groups. The default collection of value types in
FactoryTalk EnergyMetrix software represents the most commonly used electrical energy
management parameters. Value types can be set up as Consumption or Demand.
Consumption value types are treated as accumulated values of energy or process output,
for example, real energy net. Demand value types are treated as 'rate' values such as real
power demand.
To add, edit or delete a Unit, Base Unit, or Value Type navigate to the System tab, Unit
Setup screen. Select the appropriate tab and enter the values you desire in the menu fields.
Exercise care not to delete a unit, base unit, or value type that is associated with
tags that exist in the database or unpredictable results may occur.