GE Ecomagination AF-600 FP Programming Manual page 151

Parameter Description
T-54 Reset Energy Log
Option:
3 3
[0] Do not
*
reset
[1] Do reset
3.21.4 T-6# Trending
Trending is used to monitor a process variable over a
period of time and record how often the data fall into
each of 10 user-defined data ranges. This is a convenient
tool to obtain 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 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 (parameter T-63 Timed Period Start and
parameter T-64 Timed Period Stop). The 2 sets of data can
be read from parameter T-61 Continuous Bin Data (current)
and parameter T-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 10 pre-defined intervals. The sorting is
based on a relative value of the variable.
The relative value for the operating variable is determined
as:
•
Actual/rated x 100% - for power and current.
•
Actual/max x 100% - for output frequency and
motor speed.
The size of each interval can be adjusted individually, but
is 10% for each for default. Power and current can exceed
rated value, but those registrations are included in 90–
100% (MAX) counter.
150
Function:
Select [1] Do reset to reset all values in the
energy log-counters shown in
parameter T-53 Energy Log. After pressing OK,
the setting of the parameter value automatically
changes to [0] Do not reset.
Illustration 3.54 Time and Relative Values
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 10 s, 10 is added to
the counter value.
The contents of counters can be displayed as bars on the
display. Select Quick Menu⇒Trendings: Trending Continued
Bin/Trending Timed Bin/Trending Comparison.
NOTICE
The counters start counting whenever the frequency
converter is powered up. Power cycle shortly after a
reset zeros the counters. EEPROM data are updated once
per hour.
T-60 Trend Variable
Option:
[0] Power [kW] Power yielded to the motor. Reference for the
[1] Current [A]
[2] Frequency
[Hz]
*
[3] Motor
Speed
[RPM]
03/2016 All rights reserved.
Function:
Select the desired operating variable to be
monitored for trending.
relative value is the rated motor power
programmed in parameter P-07 Motor Power
[kW] or parameter P-02 Motor Power [HP]. The
actual value can be read in
parameter DR-10 Power [kW] or
parameter DR-11 Power [hp].
Output current to the motor. Reference for the
relative value is the rated motor current
programmed in parameter P-03 Motor Current.
The actual value can be read in
parameter DR-14 Motor current.
Output frequency to the motor. Reference for
the relative value is the maximum output
frequency programmed in
parameter F-15 Motor Speed High Limit [Hz]. The
actual value can be read in
parameter DR-13 Frequency.
Reference for the relative value is the
maximum motor speed programmed in
parameter F-17 Motor Speed High Limit [RPM].
DET-620D