Schweitzer Engineering SEL-387-0, Instruction Manual, Page: 349 / 556

8.19
Date Code 20170601 Instruction Manual SEL-387-0, -5, -6 Relay
Front-Panel Interface
Rotating Default Display
Display Formats and Settings
The SEL-387 presents dynamic Display Points in a dual-line or a same-line
format. Dual-line dynamic displays require two Display Points; the same-line
format uses only one Display Point.
Dual-Line Format
Apply special control characters in display-point settings DP n _0 and DP n _1
to display relay values. Use the Display Point settings with a leading two-
character sequence “::” (double colon) followed by the element name or
mnemonic text setting. For a dual-line complementary-screen presentation
format for the deasserted state (logical 0) use:
DPn_0 = ::XXXXXXXXXXXXXXXX
DP(n+1)_0 = ::NAME
For the asserted state (logical 1), replace DP n _0 with DP n _1.
For a setting example, see Dual-Line Setting Example on page 8.20 .
Same-Line Format (Time-Overcurrent Elements Only)
You can display time-overcurrent pickup settings on a single Display Point.
For a same-line presentation format, use the Display Point settings with a
prelabel (if needed), an embedded two-character sequence or an embedded
three-character sequence, the mnemonic text, and a postlabel (if needed). The
format for a same-line Display Point setting for the deasserted state (logical 0)
is:
DPn_0 =
XXX;;51nnP;YYY
or
DPn_0 = XXX;;;kk;YYY
For the asserted state (logical 1) replace DP n _0 with DP n _1.
Table 8.4 shows the time-overcurrent element settings, resolution, and the
maximum label characters. The maximum number of label characters in a
same-line display is either six or nine characters. The relay shows six label
characters when you use the embedded double semicolon (;;) and the actual
name of the overcurrent element pick up; the relay displays nine label
characters when you use the embedded triple semicolon (;;;) and overcurrent
element number shown in
Table 8.4 . You can vary the number of label
characters in the prelabel and the postlabel as long as the sum does not exceed
the maximum.
where:
X s indicate as many as 16 label characters,
n is Display Point 1, 3, 5, 7, 9, 11, 13, or 15,
( n +1) is the next Display Point, and
NAME is a relay element or mnemonic representing a time-
overcurrent element pick up, a metering value, a breaker
wear monitor value, or RTD readings.
where:
XXX is the prelabel,
YYY is the postlabel,
51 nn P is the time-overcurrent element pickup, and
kk is a shorthand number indicating a particular time-
overcurrent element pickup.