Siemens 9810 Series, Руководство пользователя, Страница: 140 / 218

Power quality
7. The High Speed Recording screen displays the settings for the high-speed
Sag/Swell data recorder (Sg/Sw HS Log — Data Recorder #6). You can
configure these settings for the meter to perform burst data logging.
Parameter Description
Enable Burst Data
Logging Select or clear this check box to turn burst data logging on or off.
Pre-trigger
recording
1
Specifies, in seconds, how many pre-event records to capture. The
actual number of records set in the high-speed Sag/Swell data
recorder’s
Pre-trigger Records setup register = (2 x system
frequency) x (number of seconds).
Post-trigger
recording
1
Specifies, in seconds, how many post-event records to capture. The
actual number of records set in the high-speed Sag/Swell data
recorder’s
Post-trigger Records = (2 x system frequency) x (number
of seconds).
Total # of recordings 2 Specifies how many burst data log sets to save in long-term memory
(NVRAM). The actual number of records is configured in the high-
speed Sag/Swell data recorder’s
Depth setup register = (Total # of
recordings) x ( Pre-trigger Records + Post-trigger Records + 1). See
“Data recorder burst data”, page 152 for an example of how a data log
set is calculated.
1 If system frequency is changed, the recording duration for Pre-trigger recording and Post-
trigger recording automatically adjusts to reflect the new frequency setting.
2 When burst data logging is enabled, the equivalent number of records for 2 burst data log
sets is allocated in short-term memory (RAM). The actual number of records set in the high-
speed Sag/Swell data recorder’s
Buffer Depth setup register = 2 x ( Pre-trigger Records +
Post-trigger Records + 1).
Click Next .
8. The Waveform Log Setup screen allows you to configure the waveform
recorder for Standard or Delayed waveform capture.
NOTE: The Sag/Swell Logging Wizard does not support Extended
waveform capture. See “Waveform capture”, page 153 for details on
Standard, Delayed and Extended waveform capture.
Parameter Description
Waveform Depth Specifies the maximum number of waveform records stored on the
meter.
Waveform Format Specifies the number of samples per cycle and the number of cycles
that are stored in a waveform record.
Trigger Position Specifies the number of cycles to capture before the waveform versus
after the waveform. Trigger position can be set using the pre-cycle
arrows or the slider bar.
NOTE: The maximum number of cycles (pre-event + post-event) cannot
exceed the total number of cycles in the waveform format.
Click Next .
9. Configure your meter’s COMTRADE settings:
a. Select or clear the Generate COMTRADE files check box to enable or
disable the creation of COMTRADE records.
NOTE: The waveform viewer on your meter’s webpages uses the
meter’s COMTRADE files. If you want to view waveforms on the
meter’s webpages, select
Generate COMTRADE files .
NOTE: The factory-default configuration for COMTRADE only
supports Standard waveform capture.
b. Set the Log depth for the COMTRADE files to specify the maximum
number of records stored on your meter’s FTP site.
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