
4.29
Date Code 20090730
Instruction Manual
SEL-734 Meter
Metering
Load Profile Report
At the interval given by load profile acquisition rate setting LDAR, the meter
adds a record to the load profile buffer. This record contains the time stamp
and the present value of the 16 selected analog quantities listed from the load
profile list setting LDLIST.
These settings are made and reviewed with the
SET R
and
SHO R
serial port
commands, respectively.
The load profile acquisition rate supports the following values: 3–59 seconds
(SEL-734P only) or 1, 5, 10, 15, 30, and 60 minutes.
to see a list of labels available in
setting LDLIST.
IMPORTANT:
Changes to the
LDLIST setting erase all previously
recorded Load Profile data.
Labels are entered into the LDLIST setting, either comma or space delimited,
but are displayed as comma delimited. Load profiling is disabled if the
LDLIST setting is empty (i.e., set to NA or 0), which is displayed as
LDLIST = 0.
The load buffer is stored in nonvolatile memory and the acquisition is
synchronized to the time of day, with a resolution of ±5 seconds. Changing the
LDAR setting may result in up to two acquisition intervals before
resynchronization occurs. If the LDAR setting is increased, the next
acquisition time does not have a complete interval; therefore, no record is
saved until the second acquisition time, which is a complete cycle. When the
buffer fills up, newer records overwrite older records.
The SEL
AC
SEL
ERATOR
QuickSet software automatically calculates available
LDP storage space depending on the meter configuration. Please refer to
for device-specific LDP storage capacity.
The load profile report is retrieved via the
LDP
command, which has the
following format:
LDP
[
a
] [
b
]
LDP2
[
a
] [
b
]
The date entries in the above example LDP commands are dependent on the
Date Format setting DATE_F.
where:
[
a
] = numeric or date parameter
[
b
] = numeric or date parameter
Table 4.15
LDP Serial Port Commands
Example LDP Serial
Port Command
Response
LDP
The SEL-734 returns all LDP data.
LDP 17
The SEL-734 returns the most recent 17 LDP rows.
LDP 10 33 or LDP 33 10
The SEL-734 returns LDP rows 10–33 or 33–10 in
chronological or reverse chronological order, respec-
tively.
LDP 1/1/2009
The SEL-734 returns all LDP data recorded after
1/1/2009.
LDP 1/1/2009 2/1/2009 or
LDP 2/1/2009 1/1/2009
The SEL-734 returns all LDP data recorded between
1/1/2009 and 2/1/2009 in chronological or reverse
chronological order, respectively.
Содержание SEL-734
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