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.
NOTE
When mounting an Analog I/O MCB 109 option card, a
battery back up of the date and time is included.
23-64 Timed Period Stop
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.
23-65 Minimum Bin Value
Range:
Function:
Size related
*
[0 - 100. %]
23-66 Reset Continuous Bin Data
Option:
Function:
Select
Do reset
[1] to reset all values 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
23-67 Reset Timed Bin Data
Option:
Function:
Select
Do reset
[1] to reset all counters 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
3.21.5 23-8* Payback Counter
The frequency converter includes a feature which can give a rough calculation on payback in cases where the frequency
converter has been installed in an existing plant to ensure energy saving by changing from fixed to variable speed control.
Reference for the savings is a set value to represent the average power yielded before the upgrade with variable speed control.
130BA259.11
P
Actual power yielded
with variable
speed control
(read P 16-10/11)
Reference power
(at fixed speed)
(P 23-80)
Rated power for the
motor size used
(P 1-20/21)
The difference between the Reference Power at fixed speed and the Actual Power yielded with speed control represent the
actual saving.
As value for the fixed speed case, the rated motor size (kW) is multiplied with a factor (set in %) representing the power
produced at fixed speed. The difference between this reference power and the actual power is accumulated and stored. The
difference in energy can be read in
.
The accumulated value for the difference in power consumption is multiplied with the energy cost in local currency and the
investment is subtracted. This calculation for Cost Savings can also be read in
Parameter Description
VLT
®
HVAC Drive Programming Guide
160
MG.11.CB.02 - VLT
®
is a registered Danfoss trademark
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