SMY133-SMY134-SMP133 Operating Manual
For example, when you are interested in imported three-phase active energy registered since 11
o’clock of 5
th
June 2018, create such custom screen in the ENVIS-DAQ program, choose evaluation
period to
bookmark
and set its date & time. Then desired screen appears in the main data group.
When you set the processing period, note that energies evaluated in this screen are
calculated according values stored in the electricity meter archive. If such record is not
stored in the archive, the evaluated energies can be false. To get correct values, the
electricity meter archive recording must be set appropriately and the archive must be filled
with sufficient depth of data. Attention must be paid whenever the electricity meter archive is
cleared!
4.3.3.1.3 Recorded Values of Energy Aggregation
All of electricity meter readings can be optionally archived into the separate archive. Use the ENVIS-
DAQ for the electricity meter archive setup.
You can set
the record period
that defines how often the electricity meter state is stored into the
memory. Minimum record period is 1 minute. The electricity meter history can be later downloaded
into a PC and analysed.
Actual tariff can be controlled either by actual local time using
the tariff zones table
or by a digital
input. In case of
table
selection, a day long timetable for 3 different tariff selections with hourly
resolution can be defined.
In case of
the digital input
selection, chosen digital input specifies actual tariff – open state means
tariff 1, closed state tariff 2. Tariff 3 is not used at this case.
4.3.3.2 Maximum Demand Processing
From the instantaneous measured values of all active powers the instrument evaluates their average
values per preset period using preset averaging method. Such quantities are called
actual demands
(
AD
). Note that the actual demands are processed individually and their averaging method & period
are presetable independently on standard average values (
P
AVG
).
Their maximum values reached since the last clearing or during
the MD evaluation interval
, are called
maximum demands
(
MD
).
Parameters determining maximum demand processing can be set in
the
Setting – AVG – MD
screen. As default,
the floating window
averaging method is set.
The demand registered since the last clearing is marked simply
MD
.
The demands registered during
the MD evaluation interval
, are marked
with additional appropriate index X - see below.
The MD evaluation interval can be set in range 1 day up to 1 year.
The maximum demands are stored including their time stamps. They
can be cleared independently of standard average maximums &
minimums. Time & date of the last clearing can be checked in the MD-
setting screen.
32
Fig. 4.30 : Custom Electricity
Meter Screen with Bookmark
Fig. 4.29 : Electricity
Meter Setting
Fig. 4.31 : Maximum
Demand Setting
