I.12
SEL-311C Relay Instruction Manual Date Code 20060320
DNP Communications
DNP3 Documentation
Binary inputs (objects 1 and 2) are supported as defined by the previous table.
Binary inputs 0–499 and 1000–1023 are scanned approximately once per
second to generate events. When time is reported with these event objects, it is
the time at which the scanner observed the bit change. This may be
significantly delayed from when the original source changed and should not
be used for sequence-of-events determination.
In order to determine an element’s point index, consult Table 9.5. Locate the
element in question in the table and note the Relay Word row number. From
that row number, subtract the row number of the first Relay Word row (usually
2) and multiply that result by 8. This is the index of the right-most element of
the Relay Word row of the element in question. Count over to the original
element and add that to get the point index. Binary Inputs 500–999 are derived
from the Sequential Events Recorder (SER) and carry the time stamp of actual
occurrence. Static reads from these inputs will show the same data as a read
from the corresponding index in the 0–499 group. Only points that are actually
in the SER list (SET R) will generate events in the 500–999 group.
Analog Inputs (objects 30 and 32) are supported as defined by the preceding
table. The values are reported in primary units. Analog inputs 28–35, 42–57,
63–78, 84–102, and 104 are further scaled according to the DECPLM setting
(e.g., if DECPLM is 3, then the value is multiplied by 1000). Analog inputs
58–62, 79–83, and the even-numbered points in 0–7 and 16–21 (current
magnitudes) are scaled according to the DECPLA setting. The even-numbered
points in 8–15 and 22–27 (voltage magnitudes) are scaled according to the
DECPLV setting. Analog inputs 36–41, 106, and the odd-numbered points in
0–27 (angles) are scaled by 100. The remaining analogs are not scaled.
30,32 63–66 A-, B-, C-, and 3-phase demand MW in.
30,32 67–70 A-, B-, C-, and 3-phase demand MVAR in.
30,32 71–74 A-, B-, C-, and 3-phase demand MW out.
30,32 75–78 A-, B-, C-, and 3-phase demand MVAR out.
30,32 79–83 Peak demand IA, IB, IC, IG, and 3I2 magnitudes.
30,32 84–87 A-, B-, C-, and 3-phase peak demand MW in.
30,32 88–91 A-, B-, C-, and 3-phase peak demand MVAR in.
30,32 92–95 A-, B-, C-, and 3-phase peak demand MW out.
30,32 96–99 A-, B-, C-, and 3-phase peak demand MVAR out.
30,32 100–102 Breaker contact wear percentage (A, B, C).
30 103 Fault type (see table for definition).
30 104 Fault location.
30 105 Fault current.
30 106 Fault frequency.
30 107 Fault settings group.
30 108 Fault recloser shot counter.
30 109–111 Fault time in DNP format (high, middle, and low 16 bits).
40,41 00 Active settings group.
Ta ble I . 5 S EL -31 1C-Wye D NP Da ta M ap (Sheet 3 of 3)
DNP
Object Type
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