Toshiba GR200 Series - 2.2.2 Check relays characteristics (OCs and UVs)

6F2S1914 (0.49)
GRL200 (Soft 033 & 037)
- 32 -
2.2.2 Check relays characteristics (OCs and UVs)
OC-
DIFL
A
B
C
8000011C20
8100011C21
8200011C22
≥1
DIFLFS-OP
To DIFL main logic
ADD.DIFLFS
830001EBB0
≥1
DIFL-A
≥1
8000011B60
&
On
DIFLFS-OC-EN
S 1
R
OCD-
DIFL
A
B
C
8400011C24
8500011C25
8200011C26
S 1
R
S 1
R
S 1
R
S 1
R
S 1
R
UVD-
DIFL
(†)
A
B
C
8800011C28
8900011C29
8A00011C2A
≥1
≥1
≥1
≥1
≥1
≥1
DIFL-B
DIFL-C
From DIFL main logic
REMOTE.DIFL-A
From RDIF
≥1
≥1
≥1
REMOTE.DIFL-B
REMOTE.DIFL-C
8100011B61
≥1
8A00011B62
UV-
DIFL
A
B
C
8000111C20
8100111C21
8200111C22
≥1
8800111B60
&
On
DIFL-UV-EN
UVS-
DIFL
AB
BC
CA
8400011C20
8500011C21
8600011C22
≥1
8900011B61
&
On
DIFL-UVS-EN
On
DIFLFS-OCD-EN
On
DIFL-DUV-EN
&
&
8300011BB0
UVD-DIFL-AT (†)
UVD-DIFL-BT (†)
UVD-DIFL-CT (†)
To CT failure detection
UV-DIFL-OP
UVS-DIFL-OP
To CT failure detection
Off
DIFLFS-EN (‡)
Figure 2.2-4 Check relays logic
†Note: UVD-DIFL element and signal are programmed with settings [DUV-DIFL] etc.
Refer to (v).
‡Note: The user should set Off for the scheme switch [DIFLFS-EN] when the operation of
check relays is not required.
To remove unnecessary operations in the DIFL function, check relays are introduced and
the DIFL function is allowed to operate during the check relays being in operation. The check
relays consists of five relay elements, a signal aggregated with the five relay elements is
injected into the DIFL logic, as shown in Figure 2.2-4. The user should set On for scheme