Danfoss VLT FC 102 Programming Manual page 222

Parameter Descriptions
23-16 Maintenance Text
Array [6]
Range:
0
*
3 3
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.
This data can be used for an energy log function allowing
to compare and structure the information about the
energy consumption related to time.
There are 2 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,
for example last 7 days within the pre-
programmed period.
For each of the above 2 functions, the data is stored in
several counters allowing for selecting time frame and a
split on hours, days, or weeks.
The period/split (resolution) can be set in
parameter 23-50 Energy Log Resolution.
The data is based on the value registered by the kWh
counter in the frequency converter. This counter value can
be read in parameter 15-02 kWh Counter containing the
accumulated value since the first power-up or latest reset
of the counter (parameter 15-06 Reset kWh Counter).
All data for the energy log is stored in counters, which can
be read from parameter 23-53 Energy Log.
220
Function:
[0 - 20 ] 6 individual texts (Maintenance Text
0...Maintenance Text 5) can be
written for use in either
parameter 23-10 Maintenance Item
or parameter 23-11 Maintenance
Action.
The text is written according to the
guidelines in parameter 0-37 Display
Text 1.
Danfoss A/S © 10/2019 All rights reserved.
®
VLT HVAC Drive FC 102
Counter 6
Counter 5
Counter 4
Counter 3
Counter 2
Counter 1
Counter 0
Illustration 3.68 Energy Log Graph
Counter 00 always contains the oldest data. A counter
covers 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
shift contents at XX:00 every hour or at 00:00 every day.
The counter with highest index is always 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 shown as bars on the LCP.
Select Quick Menu, Loggings, Energy Log: Trending Continued
Bin/Trending Timed Bin/Trending Comparison.
23-50 Energy Log Resolution
Option:
Σ kWh
(P 15-02, kWh Counter)
Function:
NOTICE
The frequency converter has
no back-up of the clock
function. The set date/time
resets to default (2000-01-01
00:00) after a power-down
unless a real-time clock-
module with back-up is
installed. Therefore, the
logging is stopped until date/
time is readjusted in
parameter 0-70 Date and Time.
In parameter 0-79 Clock Fault,
it is possible to program a
warning if the clock has not
been set properly, for example
after a power-down.
Select the type of period for
logging consumption: [0] Hour of
Day, [1] Day of Week, or [2] Day of
Month. The counters contain the
logging data from the programmed
date/time for start
(parameter 23-51 Period Start) and
Days
M0010001