Sel 551 - Front-Panel Password Security

6.2
SEL-551 Relay Instruction Manual Date Code 20110408
Front-Panel Interface
Front-Panel Pushbutton Operation
the metering values available via the front-panel {METER} pushbutton, refer to
the MET Command (Meter) on page 5.14) and MET D Command (Demand
Ammeter) on page 5.15.
A few of the front-panel primary functions do not have serial port command
equivalents. These are discussed in the following Functions Unique to the
Front-Panel Interface on page 6.4.
q Front-panel pushbutton functions that correspond to Access Level 1 serial port
commands do not require the entry of the Access Level 1 password through the
front panel.
Figure 6.2 SEL-551 Front-Panel Pushbuttons—Primary Functions
Front-Panel Password Security
Refer to the comments at the bottom of Figure 6.3 concerning the Access
Level 2 password. See PAS Command (Password) on page 5.23 for more
information on passwords.
To enter the Access Level 2 password from the front panel (if required), use
the left-right arrow pushbuttons to underscore a password digit position. Use
the up/down arrow pushbuttons to then change the digit. Press the {SELECT}
pushbutton once the correct Access Level 2 password is ready to enter. The
factory default passwords for Access Levels 1 and 2 are shown in the table in
subsection PAS Command (Password).
LAMP
TEST
TARGET
RESET
EVENTSMETER STATUS
Corresponding
Serial Port
Commands at:
Access Level 1 q
STATUSHISTORY
View Self-
Test
Status
View Event
Summaries
Function
Description
View Instantaneous
Metering Values IA, IB,
IC, IN, IG (residual),
and 3I
2
— both
Magnitude and Angle.
View Demand Metering
Values, Reset Demand
Metering Values
METER
METER D
METER RD
METER RP