Schweitzer Engineering Laboratories SEL-701-1, Instruction Manual

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SEL-701-1 Monitor
Date Code 20011009
SEL
OGIC®
Control Equations and Monitor Logic
Relay Word Bits
B.4
Relay Word Bits
The protection and control element results are represented by Relay Word bits.
Each Relay Word bit has a label name and can be in either of the following states:
1 (logical 1) or 0 (logical 0)
Logical 1 represents an element being picked up or otherwise asserted.
Logical 0 represents an element being dropped out or otherwise deasserted.
The Relay Word bits are collected into a table of 20 rows, each row containing 8
bits. The collection is called the Relay Word. Table B.1 and Table B.2 show a complete
listing of Relay Word bits and their descriptions. The Relay Word bit row numbers
correspond to the row numbers used in the
TAR command (see TARGET (Level 1 or 2)
on page 5.27 in Section 5: ASCII Serial Port Operation ).
Table B.1 SEL-701-1 Relay Word Bits
Row Relay Word Bits
1 STARTING RUNNING STOPPED JAMTRIP LOSSALRM LOSSTRIP 46UBA 46UBT
2 49A 49T THERMLO NOSLO TBSLO ABSLO * *
3 50P1T 50P2T 50N1T 50N2T 50QT 50S 50G1T 50G2T
4 47T TRGTR START 52A SPDSTR SPEEDSW RTDBIAS RTDFLT
5 WDGALRM WDGTRIP BRGALRM BRGTRIP AMBALRM AMBTRIP OTHALRM OTHTRIP
6 27P1 27P2 59P1 59P2 59G 81D1T 81D2T 81D3T
7 37PA 37PT 55A 55T VARA VART * *
8 LT1 LT2 LT3 LT4 RB1 RB2 RB3 RB4
9 SV1 SV2 SV3 SV4 SV1T SV2T SV3T SV4T
10 IN1 IN2 IN3 IN4 IN5 IN6 IN7 *
11 TRIP OUT1 OUT2 OUT3 ALARM * * *
12 * LED1 LED2 LED3 LED4 LED5 LED6 LED7
13 RTD1A1 RTD2A1 RTD3A1 RTD4A1 RTD5A1 RTD6A1 RTD7A1 RTD8A1
14 RTD9A1 RTD10A1 RTD11A1 RTD12A1 * * * *
15 RTD1A2 RTD2A2 RTD3A2 RTD4A2 RTD5A2 RTD6A2 RTD7A2 RTD8A2
16 RTD9A2 RTD10A2 RTD11A2 RTD12A2 * * * *
17 RTD1A3 RTD2A3 RTD3A3 RTD4A3 RTD5A3 RTD6A3 RTD7A3 RTD8A3
18 RTD9A3 RTD10A3 RTD11A3 RTD12A3 * * * *
19 RTD1T RTD2T RTD3T RTD4T RTD5T RTD6T RTD7T RTD8T
20 RTD9T RTD10T RTD11T RTD12T * * * *