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11.52
SEL-421 Relay
Instruction Manual
Date Code 20171021
Relay Word Bits
Row Lists
Table 11.23
Relay Word Bits: Remote Bits
Row
Name
Description
96
RB25–RB32
Remote Bit 25–32
97
RB17–24
Remote Bit 17–24
98
RB09–16
Remote Bit 9–16
99
RB01–RB08
Remote Bit 1–8
Table 11.24
Relay Word Bits: Settings Group Bits
Row
Name
Description
100
SG1–SG6
Settings Group 1–6 active
100
CHSG
Settings group change
100
*
Reserved
Table 11.25
Relay Word Bits: Future Breaker Failure Bits
Row
Name
Description
101–103 *
Reserved
Table 11.26
Relay Word Bits: Input Elements
Row
Name
Description
104
*
Reserved
104
IN101–IN107
Main Board Input 1–7
105–107 *
Reserved
108
IN201–IN208
First optional I/O board Input 1–8 (if installed)
109
IN209–IN216
First optional I/O board Input 9–16 (if installed)
110
IN217–IN224
First optional I/O board Input 17–24 (if installed)
111
*
Reserved
112
IN301–IN308
Second optional I/O board Input 1–8 (if installed)
113
IN309–IN316
Second optional I/O board Input 9–16 (if installed)
114
IN317–IN324
Second optional I/O board Input 17–24 (if installed)
115
*
Reserved
Table 11.27
Relay Word Bits: Protection SEL
OGIC
Variables
Row
Name
Description
116
PSV01–PSV08
Protection SEL
OGIC
Variable 1–8
117
PSV09–PSV16
Protection SEL
OGIC
Variable 9–16
118
PSV17–PSV24
Protection SEL
OGIC
Variable 17–24
119
PSV25–PSV32
Protection SEL
OGIC
Variable 25–32
120
PSV33–PSV40
Protection SEL
OGIC
Variable 33–40
121
PSV41–PSV48
Protection SEL
OGIC
Variable 41–48
122
PSV49–PSV56
Protection SEL
OGIC
Variable 49–56
123
PSV57–PSV64
Protection SEL
OGIC
Variable 57–64
Summary of Contents for SEL-421-4
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