Toshiba GR200 Series Instruction Manual page 472

Initiation logic – setting (TREADY1, TRESET)
(v)
Figure 2.34-15 illustrates the initiation logic for CB#1, which has 'ARC1 READY' signal issued
by the reception of signals 'ARC1-MODE=ON' and 'CB1_ALLPH_CLOSE'. Note that the user
should connect a ready signal of the CB with PLC connection point 'CB1-ARC READY' using
the BI circuit. Reclaim timer [TREADY1] is provided; the flip-flop is set to issue 'ARC1 IN-
PROG' signal when signals 'ARC_READY', 'SHOT_1ST' and 'ARC1 START' are provided.
'ARC1-S1 IN-PROG' signal succeeds followed by the 'ARC1 IN-PROG' signal.
CB1-ARC READY
800001EBB7
From PROT-COMMON
CB1_ALLPH_CLOSE
ARC1-MODE input logic
ARC1-MODE=ON
Start logic
ARC_START
Shot counter logic
SN TEST
SHOT_1ST
SHOT_2ND
SHOT_3RD
SHOT_4TH
SHOT_5TH
Shot1–Shot5 logics for CB#1
Done issuing
ARC1 SHOT1
ARC1 SHOT2
ARC1 SHOT3
ARC1 SHOT4
ARC1 SHOT5
From PROT-COMMON
CB2_ALLPH_CLOSE
810002EBB8 CB2-ARC READY
ARC2-MODE input logic
ARC2-MODE=ON
ARC NO ACT
800000EBB3
Success check
ARC1 RS
ARC2 RS
A ARC1 RESET
ARC2 RESET
B
ARC2 SHOT
If the 'ARC1 UNREADY' signal is present, Initiation logic abandons to reclose the CB#1;
then, the status of the ARC function reaches the Final Trip stage (FT); three-phase trip signal
(CB1_94TT) is generated transferred for the TRC function.
TREADY1
8000011B60
&
t 0
1
0.0-600.0s
8200011B61
S
&
R
1
≥1
&
≥1 8700011B70
8700021B6C
≥1
Figure 2.34-15 Initiation and its outside logics
8800011B62
8000011B6D
ARC1 READY
&
ARC1 UNREADY
&
&
ARC1 IN-PROG
ARC1 NOT_IN-PROG
Initiation for CB#1
&
&
&
&
&
&
&
&
&
TREADY2
t 0
1
0.0-600.0s
S
R
&
1
- 449 -
6F2S1914 (0.49)
FT ARC1 UNREADY ARC1 FT
S
R
S
R
S
R
S
R
S
R
TRESET
≥1
&
8800021B62
8000021B69
FT ARC2 UNREADY ARC2 FT
&
8000021B60
ARC2 READY
To CB#2 bridge, Final trip logic
&
ARC2 UNREADY
&
ARC2-S1 IN-PROG
8200021B61
To Shot logic for CB#2
ARC2-S1 IN-PROG
S
≥1
R
Initiation for CB#2
TRESET
t
&
0.0-300.0s
GRL200 (Soft 033 & 037)
To TRC
CB1_BRIDGE
CB1_94TT
To ARC1 Shot
To Start / Condition
ARC1-S1 IN-PROG
ARC1 IN-PROG OR
ARC1-S1 IN-PROG
ARC1-S2 IN-PROG
ARC1-S3 IN-PROG
ARC1-S4 IN-PROG
ARC1-S5 IN-PROG
t 0
A
0.0-300.0s
To TRC
CB2_BRIDGE
CB2_94TT
To Start
0
B