Schweitzer Engineering SEL-387-0, Instruction Manual

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7.22
SEL-387-0, -5, -6 Relay Instruction Manual Date Code 20170601
Serial Port Communications and Commands
SEL ASCII Protocol Details
MET H (Harmonic Metering)
Access Levels 1, B, 2
The METER H command is different from the normal metering functions, in
that it uses 1 full cycle of unfiltered data, at 64 samples per cycle, to provide a
snapshot of total harmonic content of all 12 analog current inputs. It uses a
Fast Fourier transform technique to provide secondary current values for all
harmonics from 1 (fundamental) to 15.
This function is explained more fully in Section 5: Metering and Monitoring
where a sample report also is shown. If the Analog Input Label settings
(IAW1, etc.) have been renamed, these will appear in the report as set.
MET T (Temperature Metering) (SEL-387-5 and SEL-387-6)
Access Levels 1, B, 2
METER T reports the temperature values of up to 24 RTD inputs: RTDA
Input Temperature Data (deg. X); RTD 1A through RTD 12A; RTDB Input
Temperature Data (deg. Y); RTD 1B through RTD 12B.
OPE n (Open)
Access Levels B, 2
The OPE n command asserts the OC n Relay Word bit. This bit must be
included in the TR n trip logic setting for Breaker n , in order for opening to
take place. This logic is described in Section 4: Control Logic .
To open circuit Breaker n by this command, type OPE n <Enter> . The
prompt
Open Breaker n (Y/N) ?
is displayed. Then
Are you sure (Y/N) ?
is displayed. Typing N <Enter> after either of the above prompts aborts the
opening operation with the message
Command Aborted
. If both questions are
answered Y <Enter> , the breaker will be opened, an automatic message
summarizing the trip will be sent, an Event Report will be created, and the
TRIP
LED on the front panel will light. This must be turned off by a TAR R
command or by the {TARGET RESET} pushbutton on the front panel.
If the main board jumper JMP6B is not in place, the relay responds:
Aborted:
Breaker Jumper Not in Place
.
PAS (Passwords)
Access Level 2, C
This device is shipped with default
passwords. Default passwords should
be changed to private passwords at
installation. Failure to change each
default password to a private
password may allow unauthorized
access. SEL shall not be responsible
for any damage resulting from
unauthorized access.
!
WARNING
The factory default passwords for Access Levels 1, B, 2, and C are:
where:
deg X: C or F depending on the TMPREFA setting
deg Y: C or F depending on the TMPREFB setting
Access Level Factory Default Password
1 OTTER
B EDITH
2 TAIL
C CLARKE