Application
Ref. no. 2103 REG ES
Page 13
of 44
5.2.2. Energy
counter
The device possesses 32 counting units (hereinafter referred to as counter), which
count the electrical energy. Exactly one communication object of type DPT 13.010 is
assigned to each of these counters and their value reflects the current counter level
or the counter in Watt/hours. The following figure shows an overview of the counters
of the device:
Overview of all energy counters of the device
All the counters of a device each count the active energy measured in the
appropriate channel. Mathematically, the counting of the active energy corresponds
to a temporal integration of the active power. Thus, a counter only counts when the
basic active power does not equal zero. The counting is balanced, i.e. if the active
power is positive, then the counter increases. If it is negative, then it decreases. A
negative active power corresponds to a reverse output flow. The balanced counting
means that the counter level can contain both positive and negative values.
Fig. 6 shows the relationship between the appropriate counters and the
corresponding active power. The counters of Channel 1, 2 or 3 are alternating current
counters, which only count the energy in one channel or one phase. By contrast, the
counters for the three-phase current count the total energy flowing in all three
channels or all three phases.
In addition, each type of counter possesses special characteristics. These are shown
as a comparison in the following table:
