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J.7
Date Code 20081022
Instruction Manual
SEL-787 Relay
Relay Word Bits
Definitions
87HB
Harmonic block differential element asserted.
16
87HR
Harmonic restrained element (HR1 OR HR2 OR HR3).
b
16
87HR1
Harmonic restrained element 1.
16
87HR2
Harmonic restrained element 2.
16
87HR3
Harmonic restrained element 3.
16
87R
Restrained differential element Trip (87HR OR 87HB).
5
87R1
Restrained differential element 1 (not considering harmonic blocks).
5
87R2
Restrained differential element 2 (not considering harmonic blocks).
5
87R3
Restrained differential element 3 (not considering harmonic blocks).
5
87U
Unrestrained differential element Trip (87U1 OR 87U2 OR 87U3).
5
87U1
Unrestrained differential element 1 Trip.
5
87U2
Unrestrained differential element 2 Trip.
5
87U3
Unrestrained differential element 3 Trip.
5
AIHAL
Analog inputs High Alarm Limit. If any AI
nnn
HAL = 1, then AIHAL = 1.
91
AIHW1
Analog inputs High Warning, Level 1. If any Ai
nnn
HW1 = 1, then AIHW1 = 1.
91
AIHW2
Analog inputs High Warning, Level 2. If any Ai
nnn
HW2 = 1, then AIHW2 = 1.
91
AILAL
Analog inputs Low Alarm Limit.If any AI
nnn
LAL = 1, then AILAL = 1.
91
AILW1
Analog inputs Low Warning, Level 1. If any Ai
nnn
LW1 = 1, then AILW1 = 1.
91
AILW2
Analog inputs Low Warning, Level 2.If any Ai
nnn
LW2 = 1, then AILW2 = 1.
91
AI
nnn
HAL
Analog inputs 301–504 Warnings/Alarms (where
nnn
= 301–504) High Alarm Limit.
92-103
AI
nnn
HW1
Analog inputs 301–504 Warnings/Alarms (where
nnn
= 301–504) High Warning, Level 1.
92-103
AI
nnn
HW2
Analog inputs 301–504 Warnings/Alarms (where
nnn
= 301–504) High Warning, Level 2.
92-103
AI
nnn
LAL
Analog inputs 301–504 Warnings/Alarms (where
nnn
= 301–504) Low Alarm Limit.
92-103
AI
nnn
LW1
Analog inputs 301–504 Warnings/Alarms (where
nnn
= 301–504) Low Warning, Level 1.
92-103
AI
nnn
LW2
Analog inputs 301–504 Warnings/Alarms (where
nnn
= 301–504) Low Warning, Level 2.
92-103
AMBALRM
Ambient Temperature Alarm. AMBALRM asserts if the healthy ambient RTD temperature
exceeds its alarm set point.
18
AMBTRIP
Ambient Temperature Trip. AMBTRIP asserts when the healthy Ambient RTD temperature
exceeds its trip set point.
18
BFI1
Breaker 1 Failure Initiation. Asserts when the SEL
OGIC
control equation BFI1 results in a
logical 1. Use to indicate that the Breaker 2 Failure logic has started.
18
BFI2
Breaker 2 Failure Initiation. Asserts when the SEL
OGIC
control equation BFI2 results in a
logical 1. Use to indicate that the Breaker 1 Failure logic has started.
18
BFT1
Breaker 1 Failure Trip. Asserts when the relay issues a Breaker 1 Failure trip.
7
BFT2
Breaker 2 Failure Trip. Asserts when the relay issues a Breaker 2 Failure trip.
7
CBADA
Channel A, channel unavailability over threshold.
74
CBADB
Channel B, channel unavailability over threshold.
74
CC1
Close command. Asserts when serial port command CC1 (CLOSE Breaker1) or front-panel or
Modbus/ DeviceNet
CLOSE
command is issued to Close Breaker1.
32
CC2
Close command. Asserts when serial port command CC2 (CLOSE Breaker2) or front-panel or
Modbus/ DeviceNet
CLOSE
command is issued to Close Breaker2.
32
CF1
Breaker 1 Close condition failure on.
32
CF2
Breaker 2 Close condition failure on.
32
Table J.2
Relay Word Bit Definitions for the SEL-787
(Sheet 4 of 9)
Bit
Definition
Row
Summary of Contents for SEL-787
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