Schweitzer Engineering Laboratories SEL-787 - Table C.9 Communications Processor TARGET Region

C.10
SEL-787 Relay Instruction Manual Date Code 20081022
SEL Communications Processors
SEL Communications Processor and Relay Architecture
Relay Word
Bits Information
Table C.9 lists the Relay Word bit data available in the SEL communications
processor TARGET region.
Control Points
The SEL communications processor can automatically pass control messages,
called Fast Operate messages, to the SEL-787. You must enable Fast Operate
messages by using the FASTOP setting in the SEL-787 port settings for the
port connected to the SEL communications processor. You must also enable
Fast Operate messages in the SEL communications processor by setting the
automessage setting SEND_OPER equal to Y.
When you enable Fast Operate functions, the SEL communications processor
automatically sends messages to the relay for changes in remote bits RB01–
RB32 on the corresponding SEL communications processor port. In this
example, if you set RB01 on Port 1 in the SEL communications processor, it
automatically sets RB01 in the SEL-787.
Breaker bits BR1 and BR2 operate differently than remote bits. There are two
breaker bits in the SEL-787. For Circuit Breaker n, when you set BRn, the
SEL communications processor sends a message to the SEL-787 that asserts
the OCn bit for one processing interval. If you clear BRn, the SEL
communications processor sends a message to the SEL-787 that asserts the
CCn bit for one processing interval. OCn will open the breaker (via SEL
OGIC
equation TRx) and CCn will close the breaker (via SEL
OGIC Equation CLx).
See Figure 4.44 and Figure 4.45 for the breaker trip and breaker close logic
diagrams, respectively.
Table C.9 Communications Processor TARGET Region
Address
Relay Word Bits (in Bits 7–0)
7 6 5 4 3 2 1 0
2804h * * * * * PWRUP STSET *
2805h See Table J.1, Row 0
2806h See Table J.1, Row 1
2807h See Table J.1, Row 2
2808h See Table J.1, Row 3
2809h See Table J.1, Row 4
280Ah See Table J.1, Row 5
280Bh See Table J.1, Row 6
280Ch See Table J.1, Row 7
280Dh See Table J.1, Row 8
280Eh See Table J.1, Row 9
280Fh See Table J.1, Row 10
2810h See Table J.1, Row 11
2811h See Table J.1, Row 12
•
•
•
•
•
•
286Fh See Table J.1, Row 106