J.8
SEL-751A Relay Instruction Manual Date Code 20100129
Relay Word Bits
Definitions
AFS4EL Arc-Flash Sensor input 4 excessive ambient light pickup for 10 seconds. 116
AIHAL Analog inputs High Alarm Limit. If any AIxxxHAL = 1, then AIHAL = 1. 63
AIHW1 Analog inputs High Warning, Level 1. If any AIxxxHW1 = 1, then AIHW1 = 1. 63
AIHW2 Analog inputs High Warning, Level 2. If any AIxxxHW2 = 1, then AIHW2 = 1. 63
AILAL Analog inputs Low Alarm Limit. If any AIxxxLAL = 1, then AILAL = 1. 63
AILW1 Analog inputs Low Warning, Level 1. If any AIxxxLW1 = 1, then AILW1 = 1. 63
AILW2 Analog inputs Low Warning, Level 2. If any AIxxxLW2 = 1, then AILW2 = 1. 63
AIxxxHAL Analog inputs 301–508 Warnings/Alarms (where xxx = 301–508) High Alarm Limit. 64–87
AIxxxHW1 Analog inputs 301–508 Warnings/Alarms (where xxx = 301–508) High Warning, Level 1. 64–87
AIxxxHW2 Analog inputs 301–508 Warnings/Alarms (where xxx = 301–508) High Warning, Level 2. 64–87
AIxxxLAL Analog inputs 301–508 Warnings/Alarms (where xxx = 301–508) Low Alarm Limit. 64–87
AIxxxLW1 Analog inputs 301–508 Warnings/Alarms (where xxx = 301–508) Low Warning, Level 1. 64–87
AIxxxLW2 Analog inputs 301–508 Warnings/Alarms (where xxx = 301–508) Low Warning, Level 2. 64–87
AMBALRM Ambient Temperature Alarm. Asserts if the healthy ambient RTD temperature exceeds the alarm/
warning set point for that temperature.
12
AMBTRIP Ambient Temperature Trip. Asserts when the healthy ambient RTD temperature exceeds its trip
set point.
12
BCWA Phase A breaker contact wear has reached the 100 percent wear level. 109
BCWB Phase B breaker contact wear has reached the 100 percent wear level. 109
BCWC Phase C breaker contact wear has reached the 100 percent wear level. 109
BCW BCWA OR BCWB OR BCWC has asserted. 109
BFI Breaker Failure Initiation. Asserts when the SEL
OGIC control equation BFI result in a logical 1. 12
BFT Breaker Failure Trip. Asserts when the relay issues a breaker failure trip (see Figure 4.51). 12
BKMON SEL
OGIC equation BKMON asserts (initiates breaker monitoring (see Figure 5.19)12
BRGALRM
BRGTRIP
Bearing Temperature Alarm and Trip. BRGALRM asserts when any healthy bearing RTD tem-
perature exceeds the corresponding alarm set point. BRGTRIP asserts when one or two (when
EBRGV = Y) healthy bearing RTD temperatures exceed corresponding trip set points.
21
CBADA Channel A, channel unavailability over threshold. 92
CBADB Channel B, channel unavailability over threshold. 92
CC Close command—asserts when serial port command CLOSE or front-panel or Modbus
®
/
DeviceNet CLOSE command is issued (see Table 4.25 and Figure 4.30).
29
CF Close condition failure–asserts for 1/4 cycle. 27
CFGFLT Asserts on failed settings interdependency check during Modbus setting change. 14
CL Close SEL
OGIC equation. 34
CLOSE Close logic output. 27
COMMFLT Time-out of internal communication between CPU board and DeviceNet board. 14
COMMIDLE DeviceNet Card in programming mode. 14
COMMLOSS DeviceNet Card communication failure. 14
DCHI Station dc battery instantaneous overvoltage element pickup. 110
DCLO Station dc battery instantaneous undervoltage element pickup. 110
DI_A Distortion index phase A (see Overcurrent Elements on page 4.5). 28
DI_B Distortion index phase B (see Overcurrent Elements on page 4.5). 28
DI_C Distortion index phase C (see Overcurrent Elements on page 4.5). 28
Table J.2 Relay Word Bit Definitions for the SEL-751A (Sheet 5 of 11)
Bit Definition Row
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