Schweitzer Engineering Laboratories SEL-387E - Page 120

ii Control Logic Date Code 20080110
SEL-387E Instruction Manual
LED 11 – C – C-Phase Involved in the Fault (Programmable LEDC)...............................4-16
LED 12 – N – Residual Overcurrent Element Trip ............................................................4-16
LED 13 – W1 – Winding 1 Overcurrent Element Operation .............................................4-16
LED 14 – W2 – Winding 2 Overcurrent Element Operation .............................................4-16
LED 15 – W3 – Winding 3 Overcurrent Element Operation .............................................4-17
LED 16– 50/51 – Overcurrent Trip ....................................................................................4-17
Trip and Close Logic ..................................................................................................................4-17
Trip Logic ...........................................................................................................................4-17
Close Logic .........................................................................................................................4-20
SEL OGIC Control Equations .......................................................................................................4-22
SEL OGIC Control Equations Fundamental Description......................................................4-22
SEL OGIC Control Equation Logical Operators...................................................................4-23
Parentheses Operator, ( )............................................................................................4-23
NOT Operator, !..........................................................................................................4-23
Rising-Edge and Falling-Edge Operators, / and \ .......................................................4-24
AND and OR Operators, * and + ................................................................................4-24
Ways of Setting SEL OGIC Control Equation Relay Settings..............................................4-24
Limitations of SEL OGIC Control Equations .......................................................................4-25
Relay Word Bits .........................................................................................................................4-26
TABLES
Table 4.1: Definitions for Active Setting Group Switching SEL OGIC Control Equation Settings
SS1 through SS6 ............................................................................................................
4-4
Table 4.2: Active Setting Group Switching Input Logic..........................................................................4-5
Table 4.3: SEL OGIC Control Equation Settings for Rotating Selector Switch.........................................4-6
Table 4.4: SEL OGIC Control Equation Variable Mix by Set....................................................................4-8
Table 4.5: LED Assignments..................................................................................................................4-13
Table 4.6: SEL OGIC Control Equation Operators...................................................................................4-23
Table 4.7: Maximums for SEL OGIC Control Equations.........................................................................4-25
Table 4.8: SEL-387E Relay Word Bits and Locations...........................................................................4-26
Table 4.9: Relay Word Bit Definitions...................................................................................................4-27
Table 4.10: Relay Word Bits Sorted Alphabetically ..............................................................................4-39
FIGURES
Figure 4.1: Remote Control Switches Drive Remote Bits RB1 Through RB16 ......................................4-2
Figure 4.2: Rotating Selector Switch for Active Setting Group Selection...............................................4-6
Figure 4.3: Timed Variables in SEL OGIC Control Equation Sets ............................................................4-9
Figure 4.4: Traditional Latching Relay ..................................................................................................4-10
Figure 4.5: Latch Bits in SEL OGIC Control Equation Sets.....................................................................4-10
Figure 4.6: SEL-387E Relay Front-Panel LEDs ....................................................................................4-13
Figure 4.7: SEL-387E Relay Trip Logic (TRIP1) ..................................................................................4-18
Figure 4.8: SEL-387E Relay Close Logic (CLS1) .................................................................................4-20