Configuring sag and swell logging

Use ION Setup to configure your meter to log data and waveform records related to sag/swell events, and to export the waveform data to COMTRADE files.

There are two data recorders for logging sag/swell related data:

• Sag/Swell Log (Data Rec 5) records data for plotting the ITIC (CBEMA) curve.
• Sg/Sw HS Log (Data Rec 6, Advanced and Standard) records voltage and current data from the High-Speed Power Meter module.

To configure the Sag/Swell Log, Sg/Sw HS Log (Advanced and Standard), Sag/Swell Waveform Log, and Sag/Swell COMTRADE files:

1. Start ION Setup.
2. Open the Setup Assistant for your meter.
3. Click Power Quality > Sag/Swell Logging.
4. Select the data log and click Edit.
5. Enter the meter password, if prompted.

   The Sag/Swell Logging Wizard appears.

6. The Device setting verification screen shows results of the meter configuration check for possible errors related to sag/swell monitoring and reporting. Click Fix to view details or click Next to ignore the results and proceed to the next screen.
7. The Disturbance Logging Setup screen displays the Log Depth setting for the Sag/Swell Log (Data Rec 5). (Optional) Change the maximum number of records to store in this log.
8. Click Next. If you have an Essential meter, proceed to Waveform Log Setup.
9. (Advanced and Standard) The High Speed Recording screen displays the settings for the high-speed Sag/Swell data recorder (Sg/Sw HS Log - Data Rec 6). Configure these settings for the meter to perform burst data logging.

   Parameter	Description	Notes
   Enable Burst Data Logging	Select or clear this check box to turn burst data logging on or off.	-
   Pre-trigger recording	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).	If system frequency is changed, the recording duration for Pre-trigger recording and Post-trigger recording automatically adjusts to reflect the new frequency setting.
   Post-trigger recording	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).	If system frequency is changed, the recording duration for Pre-trigger recording and Post-trigger recording automatically adjusts to reflect the new frequency setting.
   Total # of recordings	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). For details on how a data log set is calculated, see Data recorder burst data.	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).

10. Click Next.
11. Use the Waveform Log Setup screen to configure the waveform recorder for Standard or Delayed waveform capture.

    NOTE: The Sag/Swell Logging Wizard does not support Extended waveform capture. For more information on Standard, Delayed, and Extended waveform capture, see 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.

12. Click Next.
13. Configure your meter’s COMTRADE settings:
    1. Select or clear the Generate COMTRADE files checkbox 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.

    2. Set the Log depth for the COMTRADE files to specify the maximum number of records stored on your meter’s SFTP site.
14. Click Finish.

    You are returned to the Sag/Swell Logging screen and the entry shows your new configuration.

    If nothing happens after you click Finish, check the log depths and buffer depths for your other data logs to make sure that the meter has enough memory for these changes. Adjust the log depth and buffer depth of the data and waveform recorders, if needed.