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.
NB!
All counters are automatically reset when changing the setting in par.23-50. At overflow the update of the counters will stop at maximum
value.
NB!
When mounting an Analog I/O MCB109 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 par. 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. Trending, 23-6*
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 (par. 23-63,
Timed Period Start
, and par. 23-64,
Timed
Period Stop
). The two sets of data can be read from par. 23-61,
Continuous Bin Data
(current) and par. 23-62,
Timed Bin Data
(reference).
3. Parameter Description VLT
®
HVAC Drive Programming Guide
196
MG.11.C5.02 - VLT
®
is a registered Danfoss trademark
3
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