Technical information

23-51 Period Start
Range: Function:
Size
related*
[ 0 -
0 ]
Set the date and time at which the Energy
Log starts update of the counters. First data
will be stored in counter [00] and start at
the time/date programmed in this
parameter.
Date format will depend on setting in
0-71 Date Format and time format on setting
in 0-72 Time Format.
NOTE
When mounting an Analog I/O MCB 109 option card, a
battery back up of the date and time is included.
23-53 Energy Log
Range: Function:
0
*
[0 -
4294967295 ]
Array with a number of elements equal to the
number of counters ([00]-[xx] below
parameter number in display). Press OK and
Step between elements by means of
▲
and
▼
buttons on the Local Control Panel.
Array elements:
130BA280.11
23-5*
23-5*
23-5*
23-5*
23-5*
23-5*
23-5*
23-53 Ener gy met er
(00)
Ener gy met er
Ener gy met er
23-53 Ener gy met er
(01)
23-53 Ener gy met er
(02)
Ener gy met er
23-53 Ener gy met er
(03)
Ener gy met er
23-53 Ener gy met er
(04)
Ener gy met er
23-53 Ener gy met er
(05)
Ener gy met er
23-53 Ener gy met er
(06)
Ener gy met er
Data from latest period is stored in the
counter with the highest index.
At power down all counter values are stored
and resumed at next power up.
NOTE
All counters are automatically reset when changing the
setting in 23-50 Energy Log Resolution. At overflow the
update of the counters will stop at maximum value.
NOTE
When mounting an Analog I/O MCB 109 option card, a
battery back up of the date and time is included.
23-54 Reset Energy Log
Option: Function:
Select Do reset [1] to reset all values in the
Energy Log counters shown in 23-53 Energy
Log. After pressing OK the setting of the
parameter value will automatically change to
Do not reset [0].
[0] Do not reset
[1] Do reset
3.21.4 23-6* Trending
Trending is used to monitor a process variable over a
period of time and record how often the data falls into
each of ten user-defined data ranges. This is a convenient
tool to get a quick overview indicating where to put focus
for improvement of operation.
Two sets of data for Trending can be created in order to
make it possible to compare current values for a selected
operating variable with data for a certain reference period,
for the same variable. This reference period can be pre-
programmed (23-63 Timed Period Start and 23-64 Timed
Period Stop). The two sets of data can be read from
23-61 Continuous Bin Data (current) and 23-62 Timed Bin
Data (reference).
It is possible to create Trending for following operation
variables:
- Power
- Current
- Output frequency
- Motor Speed
The Trending function includes ten counters (forming a
bin) for each set of data containing the numbers of
registrations reflecting how often the operating variable is
within each of ten pre-defined intervals. The sorting is
based on a relative value of the variable.
The relative value for the operating variable is
Actual/Rated * 100%
for Power and Current and
Actual/Max * 100%
for Output Frequency and Motor Speed.
The size of each interval can be adjusted individually, but
will default be 10% for each. Power and Current can
Parameter Description
VLT
®
HVAC Drive Programming Guide
MG11CD02 - VLT
®
is a registered Danfoss trademark 165
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