Danfoss VLT AQUA Drive FC 202 Programming Manual page 170

Parameter Description
tool to get a quick overview indicating where to focus on
improvement of operation.
2 sets of data for Trending can be created to make it
possible to comoare current values for a selected
3 3 operating variable with data for a certain reference period,
for the same variable. This reference period can be pre-
programmed (parameter 23-63 Timed Period Start and
parameter 23-64 Timed Period Stop). The 2 sets of data can
be read from parameter 23-61 Continuous Bin Data (current)
and parameter 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 10 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 are included in
90%-100% (MAX) counter.
Relative value
operating variable
%
100
90
80
70
60
50
40
30
20
10
Illustration 3.69 Time and Relative Values
168
Programming Guide
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%" is updated with the
value "1". If the value stays at 13% for 10s, then "10" is
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 Comparison.
NOTICE
The counters starts counting whenever the frequency
converter is powered-up. Power cycle shortly after a
reset zeros the counters. EEPROM data are updated once
per hour.
[0] Power [kW] Power yielded to the motor. Reference for the
[1] Current [A]
[2] Frequency
[3] Motor
Counter 9: +0
Counter 8: +6
Counter 7: +2
Counter 6: +1
Counter 5: +11
Counter 4: +0
Counter 3: +1
Counter 2: +0
Counter 1: +1
Counter 0: +5
Danfoss A/S © Rev. 2014-01-21 All rights reserved.
23-60 Trend Variable
Option: Function:
Select the desired operating variable to be
monitored for Trending.
relative value is the rated motor power
programmed in parameter 1-20 Motor Power
[kW] or parameter 1-21 Motor Power [HP]. Actual
value can be read in parameter 16-10 Power
[kW] or parameter 16-11 Power [hp].
Output current to the motor. Reference for the
relative value is the rated motor current
programmed in parameter 1-24 Motor Current.
Actual value can be read in
parameter 16-14 Motor current.
Output frequency to the motor. Reference for
[Hz] the relative value is the maximum output
frequency programmed in parameter 4-14 Motor
Speed High Limit [Hz]. Actual value can be read
in parameter 16-13 Frequency.
Speed of the motor. Reference for relative value
Speed is the maximum motor speed programmed in
[RPM] parameter 4-13 Motor Speed High Limit [RPM].
MG20O702