Sel SEL-421 - Page 170

U.4.40
SEL-421/SEL-421-1 Relay User’s Guide Date Code 20020501
Basic Relay Operations
Reading Oscillograms, Event Reports, and SER
Step 2. Apply power to the relay and establish communication. Start
the
ACSELERATOR software. On the top toolbar, open the
Communication menu, and then click Port Parameters. You
will see the Port Parameters dialog box similar to Figure 4.8.
Select the Data Speed, Data Bits, Parity, and Stop Bits that
match the relay settings. Defaults are 9600, 8, N, 1,
respectively. Click OK to update the
ACSELERATOR software
communications parameters. Confirm that the Communications
Status bar at the bottom of the
ACSELERATOR window says
“Connected.”
Step 3. Confirm the correct
ACSELERATOR software passwords.
Reopen the Communication menu and click Port Parameters.
Enter your Access Level 1 password in the Level One
Password text box, and your Access Level 2 password in the
Level Two Password text box. Click the OK button to accept
changes and close the dialog box.
Step 4. Start the
ACSELERATOR software operator interface. In the top
toolbar HMI menu, click Meter and Control.
Step 5. View the Control Window. Click the Control Window button of
the HMI tree view. See Figure 4.31. The
ACSELERATOR
software displays the Control Window similar to that in
Figure 4.32.
Figure 4.31 ACSELERATOR HMI Tree View.
Figure 4.32
ACSELERATOR HMI Control Window.