Toshiba GR200 Series - (i)-2 Reception of remote-DIFL-operation signal

6F2S1914 (0.49)
GRL200 (Soft 033 & 037)
- 75 -
[TERM_TOPOLOGY]=2Term-Dual). Therefore, the operation signals in the
DIFL#2 is not generated in the RDIF.
Figure 2.7-3 examples the PLC monitoring signals “DIFL-A,-B, and -C” are sent for the
remote relays using sub-communication channels COM5-4,5,6 bits; communication application
function (COMM_APPL) function provides the features of the sub-communication channel. In
other words, the user should connect the PLC monitoring signals with PLC connection points
“COM5-1,-2,-3_S”†.
Header
Ia3
Ib3
Ic3
COM5
CRC
Header
Ia2
Ib2
Ic2
I
0
CRC
Header
I
0
Ia
V
Ib
Ic
CRC
CRC (8bits)
COM5 (6bits)
1
2
3
4
5
6
a. Sending frames for remote IEDs in IEEE C37.94
N=1
N=2
N=3
COM5-1_S
800216EBB0
COM5-2_S
810216EBB1
COM5-3_S
820216EBB2
b. Connections for sending using PLC function†
8000001C20
8100001C21
8200001C22
DIFL-A
DIFL-B
DIFL-C
COMM_ APPL function (Function ID: 4A9001)
DIFL function
From DIFL
CRC (8bits)
CRC
Figure 2.7-3 Mapping for sending signals using COM5 bits
†Note: For more information, see Chapter Relay application: Communication Application .
For applying N=3 frame, set Wide for scheme switch [CH*_COM_WIDTH].
Reception of remote-DIFL-operation signal
We should receive remote-operation signals at the local RDIF function. Figure 2.7-4 shows the
RDIF reception logic: PLC connection points “R1.DIFL-A,-B, -C_OP” are provided for the
Remote-1_relay, the other PLC connection points “R2.DIFL-A,-B, -C_OP” are provided for the
Remote-2_relay. The signals received from both remote-relays are ORed; then they are ANDed
with the local signals provided the user sets On for scheme switch [DIFL-RDIF-EN].
Consequently, the local DIFL function begins to provide trip signals despite that the local DIFL
function fails to operate.