Appendix L L-PRO Setting Example
D02706R02.30
L-PRO 4000 User Manual
Appendix L-5
Using Three
External Inputs
to Toggle
Setting Group
Three external inputs connected to an 8 position selector switch. The output
contact is used to build a truth table to toggle between 8 setting groups. In this
example we connect EI 1, EI 2, and EI 3 to the selector switch output contacts.
Setting Group 1…8 – Logic Statements
The following Group Logic statements are entered into each of the 8 setting
groups.
When the selector switch is rotated to the appropriate position the correspond-
ing setting group becomes active. Each setting group logic can have a specific
time delay pickup setting. The user can also provide 2 additional logic inputs
in each statement to be used to provide qualifiers before switching setting
groups. We are using a ProLogic statement and an external input as qualifiers,
see “Using ProLogic to Qualify Group Logic Statements” in Appendix L’ on
page Appendix L-8.
EI 1 low, EI 2 low, and EI 3 low
Figure L.7: Group Logic 16
Selector
Switch
Input States
Setting Group to Activate
EI 3
EI 2
EI 1
1
0
0
0
Setting Group 1
2
0
0
1
Setting Group 2
3
0
1
0
Setting Group 3
4
0
1
1
Setting Group 4
5
1
0
0
Setting Group 5
6
1
0
1
Setting Group 6
7
1
1
0
Setting Group 7
8
1
1
1
Setting Group 8
Summary of Contents for L-PRO 4000
Page 1: ...L PRO 4000 Transmission Line Protection Relay User Manual Version 2 3 Rev 0...
Page 2: ......
Page 4: ......
Page 8: ......
Page 10: ......
Page 14: ......
Page 40: ......
Page 50: ......
Page 116: ......
Page 146: ......
Page 218: ......
Page 252: ...Appendix B IED Settings and Ranges Appendix B 34 L PRO 4000 User Manual D02706R02 30...
Page 260: ......
Page 270: ......
Page 302: ......
Page 308: ......
Page 310: ......
Page 312: ......