Sel 421 - Page 189

U.4.51
Date Code 20090715 User’s Guide SEL-421 Relay
Basic Relay Operations
Reading Oscillograms, Event Reports, and SER
The latest 200 SER events are viewable from the front panel. For more
information, see Section 5: Front-Panel Operations.
Setting the SER and Examining an SER Record: ACSELERATOR QuickSet
The procedure in the following steps shows you how to use ACSELERATOR
QuickSet to program relay elements into the SER. Also, use these procedures
to review SER records with
ACSELERATOR QuickSet.
This example assumes that you have successfully established communication
with the relay (see Making an EIA-232 Serial Port Connection on page U.4.5).
In addition, you must be familiar with relay access levels and passwords (see
Changing the Default Passwords: Terminal on page U.4.9 to change the
default access level passwords). You should also be familiar with
ACSELERATOR QuickSet (see Section 3: PC Software).
Step 1. Configure the communications port.
a. Start
ACSELERATOR QuickSet.
b. On the top toolbar, open the Communication menu,
and then click Port Parameters.
You will see the Port Parameters dialog box similar to
Figure 4.7.
c. Select the Data Speed, Data Bits, Stop Bits, Parity,
and RTS/CTS that match the relay settings. The
defaults are 9600, 8, 1, None, Off, respectively.
d. Click OK to update the
ACSELERATOR QuickSet
communications parameters.
e. Confirm that the Communications Status bar at the
bottom of the
ACSELERATOR QuickSet window says
Connected.
Step 2. Confirm the correct
ACSELERATOR QuickSet passwords.
a. Reopen the Communication menu and click Port
Parameters.
b. 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.
c. Click OK to accept changes and close the dialog box.
Step 3. Download the present configuration in the SEL-421 by clicking
Settings > Read.
The relay sends all configuration and settings data to
ACSELERATOR QuickSet.
Step 4. Click the Report branch of the
ACSELERATOR QuickSet
Settings tree view structure (see Figure 4.42) to view the SER
settings entry screen.
You will see the SER Points and Aliases window similar to
Figure 4.43.
Courtesy of NationalSwitchgear.com