Danfoss VLT FC 100 Series Programming Manual page 196

3. Parameter Description
3
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:
*
Do not reset
[0]
[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,
Period Stop
). The two sets of data can be read from par. 23-61,
196
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.
Function:
Do reset
Select [1] to reset all values in the Energy Log counters shown in par. 23-53,
OK the setting of the parameter value will automatically change to
Continuous Bin Data
MG.11.C5.02 - VLT ® is a registered Danfoss trademark
®
VLT HVAC Drive Programming Guide
Do not reset [0].
Timed Period Start
Timed Bin Data
(current) and par. 23-62,
Energy Log
. After pressing
Timed
, and par. 23-64,
(reference).