Schweitzer Engineering Laboratories SEL-167D, Instruction Manual

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RELAY WORD
Table 2.4 shows the Relay Word for the relay.
Relay elements and intermediate logic results are represented in a 32-bit Relay Word (grouped
into four 8-bit words). The user selects bits in this word to perform the desired functions for
controlling outputs and initiating or cancelling reclose. The selected bits are stored in masks
for each function. You can program the bits in these masks with the LOGIC command.
Table 2.4: Relay Word
51NP 50N1 50N2 50N3 51PP 50P1 50P2 50P3
DFP 67N1 67N2 67N3 DFG
67P1
67P2
67P3
51NT Z1GT Z2GT Z3GT 51PT Z1PT Z2PT Z3PT
ALRM TRIP T C DT
52BT 52AT TOCP DCTH
Table 2.5: Relay Word Bit Summary, on the following page, explains the meaning of each
bit in the Relay Word.
The use of the Relay Word and programmable masks provides application flexibility without
rewiring panels or changing jumpers on circuit boards.
2-14 Specifications
SEL-267D/167D Instruction Manual
Date Code 940512