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
. In
it is possible to
program for a Warning in case clock not has been set
properly, e.g. after a power down.
23-51 Period Start
Range:
Function:
Size related
*
[0 - 0 ]
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
. 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
.
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 (
and
). The two sets of data can be read from
(current) and
(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%
Parameter Description
VLT
®
HVAC Drive Programming Guide
158
MG.11.CB.02 - VLT
®
is a registered Danfoss trademark
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