Schweitzer Engineering Laboratories SEL-387E - Access Levels; Access Level 0

7-14 Communications Date Code 20080110
SEL-387E Instruction Manual
XFMR 1 Date: MM/DD/YY Time: HH:MM:SS.SSS
STATION A
Event: TRIG
Targets:
Winding 1 Currents (A Sec), ABC: 123.0 123.0 123.0
Winding 2 Currents (A Sec), ABC: 123.0 123.0 123.0
Winding 3 Currents (A Sec), ABC: 123.0 123.0 123.0
Winding X Voltages (V Sec), ABC: 123.0 123.0 123.0
Volts/Hertz Percent: 0.0
=>>
• RID and TID settings for the active group
• Date and time the event was triggered
• The event type
• Target information
• All phase currents and voltages
Access Levels
Commands can be issued to the relay via the serial port to view metering values, change relay
settings, etc. The available ASCII serial port commands are listed in
Figure 7.2 and summarized
by level in the SEL-387E Relay Command Summary. A multilevel password system provides
security against unauthorized access. This access scheme allows you to give personnel access to
only those functions they require.
The relay supports four access levels. Each level has an associated screen prompt and password.
The relay is shipped with the default factory passwords shown in the table under PAS
(Passwords) later in this section. Below are the access level hierarchy, the access level prompts,
and commands allowed in each of the four access levels:
Access Level
Prompt Commands Allowed
0 (lowest) = 0
1 => 0, 1
B ==> 0, B
2 (highest) =>> 0, 1, B, 2
Figure 7.2 summarizes the access levels, prompts, and commands available from each access
level and commands for moving between access levels.
The relay responds with “Invalid Access Level” if a command is entered from an access level
lower than the specified access level for the command. The relay responds with “Invalid
Command” to commands not listed or if a command is not followed by the correct number or
letter.
Access Level 0
Once serial port communications are established with the relay, the Access Level 0 prompt (=)
appears. If a different prompt appears, the relay was left in a different access level or the
terminal emulation you are using is translating the characters differently. VT-100 emulation is
recommended.