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2.5
Date Code 20081022
Instruction Manual
SEL-787 Relay
Installation
I/O Configuration
Communications Card
Either the DeviceNet (see
Appendix G: DeviceNet Communications
) or the
EIA-232/ EIA-485 communications card is supported in Slot
C
. The EIA-232/
EIA-485 card provides one serial port with one of the following two serial
port interfaces:
➤
Port 4A
, an isolated EIA-485 serial port interface
➤
Port 4C
, nonisolated EIA-232 serial port interface, supporting
the +5 Vdc interface
Select either EIA-232 or EIA-485 functionality using the
Port 4
Setting
COMM Interface.
shows the port number, interface, and type of
connector for the two protocols.
The communications card supports all of the following protocols:
➤
Modbus RTU Slave
➤
SEL ASCII and Compressed ASCII
➤
SEL Fast Meter
➤
SEL Fast Operate
➤
SEL Fast SER
➤
SEL Fast Message Unsolicited Write
➤
SEL Settings File Transfer
➤
SEL M
IRRORED
B
ITS
(MBA, MBB, MB8A, MB8B, MBTB,
MBTA)
➤
Event Messenger
➤
DNP3 Slave Level 2
➤
C37.118 (Synchrophasor Data)
Current Card (6 ACI)
Supported in Slot
Z
only, this card provides Winding 1 and Winding 2 current
inputs for three-phase CTs. You can order the following secondary current
ratings:
➤
1 A Winding 1, 1 A Winding 2
➤
1 A Winding 1, 5 A Winding 2
➤
5 A Winding 1, 5 A Winding 2
Table 2.2
Communication Card Interfaces and Connectors
Port
Interface
Connectors
4A
EIA-485
5-pin Euro
4C
EIA-232
D-sub
Table 2.3
Current Card Terminal Allocation
Terminal Number
Designator
Description
01, 02
IAW1
Phase A Winding 1 current input
03, 04
IBW1
Phase B Winding 1 current input
05, 06
ICW1
Phase C Winding 1 current input
07, 08
IAW2
Phase A Winding 2 current input
09, 10
IBW2
Phase B Winding 2 current input
11, 12
ICW2
Phase C Winding 2 current input
Содержание SEL-787
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