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 SELOGIC 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
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