Load Profile - ABB A43 User Manual

Technical Description

5.10 Load Profile

Load profile is a collection of 8 channels that can store register values for register
General
quantities or interval averages for instrumentation quantities. Through Modbus
and EQ-bus communication each channel can be assigned one register or instru-
mentation quantity, a time interval and a maximum amount of snapshots to be
stored in the channel.
Interval length per channel can also be configured via the buttons on the meter.
The load profiles can be read via communication or directly on the display.
The stored register values in a channel are read as a list of register snapshots and
for instrumentation values as a list of interval averages.
Note –
If a power failure occurs that lasts over the end of an interval, the value will be
stored when the meter powers up again only if time/date are still correct.
The interval lengths for Load Profiles can be one of the following: 1, 2, 5, 10, 15,
Intervals
20, 30, 60, 120, 180, 240, 360, 480, 720 or 1440 minutes.
If the interval is evenly divisible with an hour, the start of each hour will mark the
start of a new interval. If the interval is evenly divisible with a day, the start of a
day will mark the start of a new interval.
The interval date and time is stored as end of interval. For instance, if an interval
starts 2010.01.01 00:00.00 and ends 2010.01.01 00:15.00, then the stored period
will be 2010.01.01 00:15.00.
Interval is set to 120 minutes, current time 12:13. Evenly divisible with a day. The
Example 1
next interval end/start times will be: 14:00, 16:00, 18:00, 20:00, 22:00, 00:00,
etc,...
Interval is set to 15 minutes, current time 12:13. Evenly divisible with an hour.
Example 2
The next interval end/start times will be: 12:15, 12:30, 12:45, 13:00, 13.15, 13.30
etc,...
Channels and
Each channel has its own interval configuration. That means that snapshots in one
channel can be stored with a different interval than snapshots in another channel.
snapshots
Each channel can be assigned a number of snapshots. A total of 40 000 snapshots can
be stored in a load profile. All channels in a load profile share the same mem-ory
area, which means that one channel can store 40 000 snapshots if no other
A43/A44
User Manual
Before any load profiles can be stored, time/date must be set.
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Revision: C