Schweitzer Engineering Laboratories SEL-751 - Page 890

K.20
SEL-751 Relay Instruction Manual Date Code 20170927
Relay Word Bits
Definitions
RSTTH3 Thermal Element 3 reset
148
RSTTRGT SELOGIC control equation: reset trip logic and targets when asserted
26
RTD1A–RTD4A
RTD1T–RTD4T
RTD1 through RTD4: alarms and trips
27
RTD5A–RTD8A
RTD5T–RTD8T
RTD5 through RTD8: alarms and trips
28
RTD9A–RTD12A
RTD9T–RTD12T
RTD9 through RTD12: alarms and trips
29
RTDFLT Asserts when an open or short circuit condition is detected on any enabled RTD input, or com-
munication with the external RTD module has been interrupted
26
RTDIN Indicates status of contact connected to SEL-2600A RTD module
26
SALARM Software alarms: invalid password, changing access levels, settings changes
13
SC01QD–SC07QD SEL
OGIC counters 01 through 08 asserted when counter = 0
60
SC01QU–SC08QU SELOGIC counters 01 through 08 asserted when counter = preset value
59
SC09QD–SC16QD SELOGIC counters 09 through 16 asserted when counter = 0
62
SC09QU–SC16QU SELOGIC counters 09 through 16 asserted when counter = preset value
61
SC17QD–SC24QD SELOGIC counters 17 through 24 asserted when counter = 0
64
SC17QU–SC24QU SEL
OGIC counters 17 through 24 asserted when counter = preset value
63
SC25QD–SC32QD SELOGIC counters 25 through 32 asserted when counter = 0
66
SC25QU–SC32QU SELOGIC counters 25 through 32 asserted when counter = preset value
65
SF Asserts when frequency difference (slip frequency) of voltages VP and VS is less than the
maximum slip frequency setting 25SF
114
SG1 Asserts when Setting Group 1 is active
32
SG2 Asserts when Setting Group 2 is active
32
SG3 Asserts when Setting Group 3 is active
32
SG4 Asserts when Setting Group 4 is active
32
SH0 Reclosing relay shot counter = 0
30
SH1 Reclosing relay shot counter = 1
30
SH2 Reclosing relay shot counter = 2
30
SH3 Reclosing relay shot counter = 3
30
SH4 Reclosing relay shot counter = 4
30
SV01–SV08 SEL
OGIC control equation variables SV01 through SV08
47
SV01T–SV08T SELOGIC control equation variable SV01T through SV08T with settable pickup and dropout
time delay
48
SV09–SV16 SEL
OGIC control equation variables SV09 through SV16
49
SV09T–SV16T SELOGIC control equation variable SV09T through SV16T with settable pickup and dropout
time delay
50
SV17–SV24 SEL
OGIC control equation variables SV17 through SV24
51
Table K.2 Relay Word Bit Definitions for the SEL-751 Relay (Sheet 15 of 17)
Bit Definition Row