7-42
Inputs, Outputs, Timers, and Other Control Logic
Date Code 20011205
SEL-311A Instruction Manual
If the display point setting does not match the format correctly, the relay will display the setting
text string as it was actually entered, without substituting the time-overcurrent element setting
value.
Displaying Time-Overcurrent Elements Example
This example demonstrates use of the rotating display to show time-overcurrent elements in
primary units. This example will set the 51PP and 51GP to display in the rotating default
display.
Set the following:
SET
SET T
SET L
CTR = 200
DP1_0 = PHASE TRIPS AT
DP1 = 0
CTRP = 200
DP2_0 = ::51PP
DP2 = 0
E51P = Y
DP3_0 = NEUTRAL TRIPS AT
DP3 = 0
E51G = Y
DP4_0 = ::51GP
DP4 = 0
51PP = 6
51GP = 0.75
Setting DP
n
= 0 and using the DP
n
_0 in the text settings allows the setting to permanently rotate
in the display. The DP
n
logic equation can be set to control the text display—turning it on and
off under certain conditions. With the relay set as shown above, the LCD will show the
following:
PHASE TRIPS AT
1200.00 A pri
then,
NEUTRAL TRIPS AT
150.00 A pri
With the control string set on the even display points “DP2, DP4, DP6, …” and the description
set on the odd display points “DP1, DP3, …” each screen the relay scrolls through will have a
description with the value below it.
For additional format control for the setting elements only, use the following
SET T
control
string:
Dpi_j = XXX;;[;]ABCDE;YYY
where:
·
i is a number between 1 and 16, representing the 16 display points, and j is either 1 or 0
representing logic high or low, respectively.
·
XXX is an optional pre-label. YYY is an optional post label that is preceded by a single
semicolon (;) character. The label character count is the sum of the characters used in
the pre and post labels.
·
ABCDE is a relay setting variable from the table below.
Summary of Contents for SEL-311A
Page 6: ......
Page 8: ......
Page 10: ......
Page 24: ......
Page 40: ......
Page 66: ......
Page 96: ......
Page 98: ......
Page 112: ......
Page 114: ......
Page 122: ......
Page 170: ......
Page 202: ......
Page 204: ......
Page 246: ......
Page 248: ......
Page 286: ......
Page 290: ......
Page 304: ......
Page 306: ......
Page 334: ......
Page 384: ......
Page 386: ......
Page 394: ......
Page 398: ......
Page 402: ......
Page 404: ......
Page 410: ......
Page 412: ......
Page 426: ......
Page 444: ......
Page 460: ......
Page 474: ......