Danfoss VLT FC 103, Programming Manual

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23-54 Reset Energy Log
Option: Function:
Select [1] Do reset 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
[0] Do not reset .
[0] Do not reset
[1] Do reset
3.18.6 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 focus on
improvement of operation.
Two sets of data for Trending can be created to make it
possible to com 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
exceed rated value, but those registrations will be included
in 90%-100% (MAX) counter.
Relative value
operating variable
Counter 1: +1
Counter 0: +5
Counter 2: +0
Counter 3: +1
Counter 4: +0
Counter 5: +11
Counter 6: +1
Counter 7: +2
Counter 8: +6
Counter 9: +0
130BA281.10
80
70
50
60
30
40
10
20
%
90
100
Illustration 3.60
Once a second, the value of the operating variable
selected is registered. If a value has been registered to
equal 13%, the counter “10% - <20%” will be updated with
the value “1”. If the value stays at 13% for 10s, then “10”
will be added to the counter value.
The contents of counters can be displayed as bars on LCP.
Select
Quick Menu
⇒
Loggings : Trending Continued Bin/
Trending Timed Bin/Trending Comson .
NOTE
The counters starts counting whenever the frequency
converter is powered-up. Power cycle shortly after a reset
will zero the counters. EEPROM data are updated once per
hour.
23-60 Trend Variable
Option: Function:
Select the desired operating variable to be
monitored for Trending.
[0]
*
Power [kW] Power yielded to the motor. Reference for
the relative value is the rated motor power
programmed in
1-20 Motor Power [kW] or
1-21 Motor Power [HP] . Actual value can be
read in 16-10 Power [kW] or 16-11 Power [hp] .
[1] Current [A] Output current to the motor. Reference for
the relative value is the rated motor current
programmed in
1-24 Motor Current
. Actual
value can be read in
16-14 Motor current
.
[2] Frequency
[Hz] Output frequency to the motor. Reference
for the relative value is the maximum output
frequency programmed in
4-14 Motor Speed
High Limit [Hz] . Actual value can be read in
16-13 Frequency .
[3] Motor Speed
[RPM] Speed of the motor. Reference for relative
value is the maximum motor speed
programmed in
4-13 Motor Speed High Limit
[RPM] .
Parameter Description
VLT
®
Refrigeration Drive Programming Guide
MG16H102 - VLT
®
is a registered Danfoss trademark 147
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