Schweitzer Engineering Laboratories SEL-700G Series, Instruction Manual

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8.3
Date Code 20170814 Instruction Manual SEL-700G Relay
Front-Panel Operations
Human-Machine Interface
Front-Panel Security
Front-Panel Access Levels
The SEL-700G front panel typically operates at Access Level 1 and provides
viewing of relay measurements and settings. Some activities, such as editing
settings and controlling output contacts, are restricted to those operators who
know the Access Level 2 passwords.
In the figures that follow, restricted activities are indicated by the
padlock symbol.
Figure 8.2 Access Level Security Padlock Symbol
Before you can perform a front-panel menu activity that is marked with the
padlock symbol, you must enter the correct Access Level 2 password. After
you have correctly entered the password, you can perform other Access
Level 2 activities without reentering the password.
Access Level 2 Password Entry
When you try to perform an Access Level 2
activity, the relay determines whether you have
entered the correct Access Level 2 password since
the front-panel inactivity timer expired. If you
have not, the relay displays the screen shown in
Figure 8.3 for you to enter the password. See
PASSWORD Command (Change Passwords) on
page 7.37 for the list of default passwords and for
more information on changing passwords.
Figure 8.3 Password Entry Screen
Table 8.1 Front-Panel Automatic Messages (FP_AUTO := OVERRIDE)
Condition Front-Panel Message
Relay detecting any failure Displays the type of latest failure (see Section 10: Testing
and Troubleshooting).
Relay trip has occurred Displays the type or cause of the trip. Refer to Table 9.1
for a list of trip display messages.
Relay alarm condition has
occurred Displays the type of alarm. The
TRIP
LED is also flashing
during an alarm condition. See Table 8.3 for a list of the
alarm conditions.
Password=
Del Clr Accept
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