Sel 751A - Control Pins; Relay Word Bits Information; Table C.9 Communications Processor TARGET Region

C.10
SEL-751A Relay Instruction Manual Date Code 20100129
SEL Communications Processors
SEL Communications Processor Example
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-751A. You must enable Fast
Operate messages by using the FASTOP setting in the SEL-751A 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-751A.
Breaker bit BR1 operates differently than remote bits. There is one breaker bit
in the SEL-751A. For Circuit Breaker 1, when you set BR1, the SEL
communications processor sends a message to the SEL-751A that asserts the
OC bit for one processing interval. If you clear BR1, the SEL communications
processor sends a message to the SEL-751A that asserts the CC bit for one
processing interval. OC will open the breaker (via SEL
OGIC equation TR) and
CC will close the breaker (via SEL
OGIC equation CL). See Figure 4.29 and
Figure 4.30 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
*****PWRUPSTSET*
2805h See Ta ble J.1, Row 0
2806h See Ta ble J. 1 , Row 1
2807h See Ta ble J.1, Row 2
2808h See Ta ble J. 1 , Row 3
2809h See Ta ble J.1, Row 4
280Ah See Table J.1, Row 5
280Bh See Table J.1, Row 6
280Ch See Ta ble J.1, Row 7
280Dh See Table J.1, Row 8
280Eh See Table J.1, Row 9
280Fh See Ta b le J. 1 , Row 10
2810h See Ta ble J.1 , Row 11
2811h See Ta ble J.1 , Row 12
•
•
•
•
•
•
287Ch See Table J.1, Row 119