Technical information

23-16 Maintenance Text
Range: Function:
The text is written according to the guidelines in
0-37 Display Text 1.
3.21.3 23-5* Energy Log
The frequency converter is continuously accumulating the
consumption of the motor controlled, based on the actual
power yielded by the frequency converter.
These data can be used for an Energy Log function
allowing the user to compare and structure the
information about the energy consumption related to time.
There are basically two functions:
- Data related to a pre-programmed period,
defined by a set date and time for start
- Data related to a predefined period back in time
e.g. last seven days within the pre-programmed
period
For each of the above two functions, the data are stored in
a number of counters allowing for selecting time frame
and a split on hours, days or weeks.
The period/split (resolution) can be set in 23-50 Energy Log
Resolution.
The data are based on the value registered by the kWh
counter in the frequency converter. This counter value can
be read in 15-02 kWh Counter containing the accumulated
value since the first power up or latest reset of the counter
(15-06 Reset kWh Counter).
All data for the Energy Log are stored in counters which
can be read from 23-53 Energy Log.
130BA282.10
Σ kWh
(P 15-02, kWh Counter)
Counter 1
Counter 0
Counter 2
Counter 3
Counter 4
Counter 5
Counter 6
Days
Counter 00 will always contain the oldest data. A counter
will cover a period from XX:00 to XX:59 if hours or 00:00 to
23:59 if days.
If logging either the last hours or last days, the counters
will shift contents at XX:00 every hour or at 00:00 every
day.
Counter with highest index will always be subject to
update (containing data for the actual hour since XX:00 or
the actual day since 00:00).
The contents of counters can be displayed as bars on LCP.
Select Quick Menu, Loggings, Energy Log: Trending
Continued Bin / Trending Timed Bin / Trending Comparison.
23-50 Energy Log Resolution
Option: Function:
Select the desired type of period for logging
of consumption. Hour of Day [0] , Day of
Week [1] or Day of Month [2]. The counters
contain the logging data from the
programmed date/time for start (23-51 Period
Start) and the numbers of hours/days as
programmed for (23-50 Energy Log Resolution).
The logging will start on the date
programmed in 23-51 Period Start, and
continue until one day/week/month has gone.
Last 24 Hours [5], Last 7 Days [6] or Last 5
Weeks [7]. The counters contain data for one
day, one week or five weeks back in time and
up to the actual time.
The logging will start at the date programmed
in 23-51 Period Start. In all cases the period
split will refer to Operating Hours (time where
frequency converter is powered up).
[0] Hour of
Day
[1] Day of
Week
[2] Day of
Month
[5] * Last 24
Hours
[6] Last 7 Days
[7] Last 5
Weeks
NOTE
The frequency converter has no back up of the clock
function and the set date/time will reset to default
(2000-01-01 00:00) after a power down unless a Real Time
Clock module with back up is installed. Consequently the
logging will be stopped until date/time is readjusted in
0-70 Date and Time. In 0-79 Clock Fault it is possible to
program for a Warning in case clock not has been set
properly, e.g. after a power down.
Parameter Description
VLT
®
HVAC Drive Programming Guide
164 MG11CD02 - VLT
®
is a registered Danfoss trademark
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