CHAPTER 4: INTERFACES
489 GENERATOR MANAGEMENT RELAY – INSTRUCTION MANUAL 4–39
To limit the size of the saved file,
Z Enter a number in the Limit File Capacity To box.
The minimum number of samples is 1000. At a sampling rate of 5
seconds (or 1 sample every 5 seconds), the file will contain data
collected during the past 5000 seconds. The EnerVista 489 Setup
software will automatically estimate the size of the trending file.
Z Press “Run” to start the data logger.
If the Log Samples to File item is selected, the EnerVista 489 Setup
software will begin collecting data at the selected sampling rate and will
display it on the screen. The data log will continue until the Stop button
is pressed or until the selected number of samples is reached, whichever
occurs first.
During the process of data logging, the trending screen appears as shown below.
FIGURE 4–7: Trending Screen
SAVE DATA TO FILE
Select to save the
information to a CSV
file on the PC
MODE SELECT
Select to view Cursor 1,
Cursor 2, or the Delta
(difference) values for
the graph
BUTTONS
Zoom In enlarges the graph
Zoom Out shrinks the graph
Reset clears the screen
Run/Stop starts and stops
the data logger
GRAPH CHANNEL
Select the desired
channel to be captured
from the pull-down menu
LEVEL
Displays the value
at the active
cursor line
WAVEFORM
The trended data
from the 469 relay
CURSOR LINES
Click and drag the
cursor lines with
the left mouse
button
Courtesy of NationalSwitchgear.com
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