Schweitzer Engineering Laboratories SEL-251 - Relay Command Summary

Date Code 970103 Command Summary
SEL-251, -2, -3 Instruction Manual
SEL-251, -2, -3 RELAY COMMAND SUMMARY
Access Level 0
ACCESS Answer password prompt (if password protection is enabled) to enter Access Level 1. Third
unsuccessful attempt pulses ALARM contacts closed for one second.
Access Level 1
2ACCESS Answer password prompt (if password protection is enabled) to enter Access Level 2. This
command always pulses the ALARM contacts closed for one second.
BREAKER Displays running sum of circuit breaker trips for relay and external trips (circuit breaker trip
counters). Also display running sum of interrupted current in each circuit breaker pole for relay
and external trips. Current values are displayed in amperes.
BREAKER R Resets circuit breaker trip counters and interrupted current sums to zero for both relay and
external trips. Relay stores reset date and time.
DATE m/d/y Sets or displays date. DAT 4/1/93 sets date to April 1, 1993. IRIG-B time code input overrides
existing month and day settings. DATE pulses ALARM contacts when year entered differs from
year stored. To display the date only, enter DATE.
EVENT n Shows event record. EVE or EVE 1 shows newest event; EVE 12 shows oldest (n=1, 2, 3,...,11,
or 12).
HISTORY Shows DATE, TIME, EVENT, LOCAT (location), SHOT, TARGETS, and CURR (maximum
fault current) for the last twelve events.
IRIG Forces immediate attempt to synchronize internal relay clock to time code input.
METER n Displays present phase, residual, and negative-sequence current values; present real and reactive
power values; present line-to-neutral, line-to-line, zero-sequence, and negative-sequence voltage
values. Optional n displays METER data n times.
METER D Displays demand and peak demand values of phase, residual, and negative-sequence current
values and real and reactive power values.
METER RD Resets demand values.
METER RP Resets peak demand values.
QUIT Returns control to Access Level 0; returns target display to Relay Targets.
SHOWSET n Displays settings of setting group n without affecting them (n = 1, 2, 3, 4, 5, or 6).
STATUS Shows self-test status.
TARGET n k Shows data and sets target LEDs as follows (n = 0, 1, 2, . . . 7, or 8):
TAR 0: Front Panel Targets TAR 1: Relay Word row R1
TAR 2: Relay Word row R2 TAR 3: Relay Word row R3
TAR 4: Relay Word row R4 TAR 5: Relay Word row R5
TAR 6: Relay Word row R6 TAR 7: Input States
TAR 8: Output Contact States Optional k displays target data k times.