Schweitzer Engineering Laboratories SEL-421-4, Instruction Manual

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3.8
SEL-400 Series Relays Instruction Manual Date Code 20171006
Basic Relay Operations
Access Levels and Passwords
Access Level 0 is the least secure and most limited access level, and Access
Level 2 is the most secure level at which you have total relay functionality
(Level C is reserved for SEL factory operations. Only go to level C to change the
level C password or under the direction of an SEL employee). For example, from
Access Level 1, you can view settings, but you cannot change settings unless you
are at a higher access level.
Table 3.2 lists access levels and operator functions for the relay.
The relay performs command interpretation and execution according to your val-
idated access level. Each access level has a password that the relay must verify
before you can control the relay at that level.
Table 3.3 lists the access level com-
mands with corresponding passwords.
Figure 3.6 Access Level Structure
Table 3.2 SEL-400 Series Relay Access Levels
Access Level Prompt Allowed Operations
0 = Log in to Access Level 1.
1 => View data and status information.
B ==> Access Level 1 functions plus breaker control and data.
P P=> Access Level B functions plus protection settings.
A A=> Access Level B functions plus automation settings.
O O=> Access Level B functions plus output settings.
2 =>> Perform all relay access level functions.
C ==>> SEL factory-specific functions. For a list of commands
available, contact SEL.
Table 3.3 Access Level Commands and Passwords
Access Level Command Factory-Default Password
0 QUIT (None)
1 ACCESS OTTER
B BACCESS EDITH
P PACCESS AMPERE
A AACCESS VOLTA
O OACCESS WATT
2 2ACCESS TAIL
C CAL Sel-1
Access
Level 0
Access Level x
(Note: Use xAC to switch
between any of the access
levels x, where x = B,P,A,O,2)
ACC
QUIT
QUIT
ACC
QUIT
ACC
xAC
Access
Level 1
xAC
CAL
(from 2AC only)
Access
Level C