SATEC PM174 Manual - Manual (Page 90)

Chapter 4 PAS Application Configuring Recorders
90 Series PM174 Powermeters
Option Range Description
Record size The size of the file record for a single channel or a section. Set
automatically depending on the file and on the number of parameters
in the data record
Parameters 0-16 The number of parameters in a single data record
Memory is allocated for each file statically when you set up
your files and will not change unless you re-organize the files.
The meter automatically performs de-fragmentation of the
memory each time you re-organize your files. This helps keep
all free memory in one continuous block and thus prevents
possible leakage of memory caused by fragmentation.
To change the file properties or to allocate the memory for a
new file, double click on the file partition you want to change,
select desired parameters for your log, and click OK. For your
reference, the record size and the number of records available
for your file are reported in the dialog box.
To delete an existing file partition, click on Delete and then
click OK.
The following table shows how to calculate a file size for
different log files.
File Record Size, Bytes File Size, Bytes
Event Log 20 Record size × Number of records
Data Log 12 + 4 × Number of parameters Record size × Number of records
TOU Profile Log, Data
log #16 12 + 4 × (Number of season
tariffs + 1 if the TOU summary
register is ordered)
Record size × Number of TOU registers x
Number of records ( × 2 if the maximum
demand profile is also ordered)
Waveform Log 1068 (per channel) Record size × Number of Channels ×
Number of series (events) × Number of
records per series
IEEE 1159 Power
Quality Log
32 Record size x Number of records
For more information on configuring specific files, see
“Configuring Data Log Files” and “Configuring Waveform Files”
below.
The memory is pre-configured for common data trending and
fault recording applications as shown in the following table.
No. File Type Size,
Bytes
Channels Number of
Records
Number of
Events
Description
1 Event log Wrap around 20000 1000 1000
2 Data log #1 Wrap around 109440 1440 1440 Configured for
data trending
3 Data log #2 Wrap around 109440 1440 1440 Configured for
data trending
18 Waveform log
#1
Wrap around 256320 6 40 20 32 samples/cycle
× 32 cycles/series
19 Waveform log
#2
Wrap around 256320 6 40 20 128 samples/cycle
× 8 cycles/series
27 IEEE 1159
Power Quality
Log
Wrap around 32000 1000 1000