Toshiba GR200 Series Instruction Manual page 55

Check relays characteristics (OCs and UVs)
2.2.2
A
OC-
B
DIFL
C
DIFLFS-OC-EN
8400011C24
A
OCD-
8500011C25
B
DIFL
8200011C26
C
DIFLFS-OCD-EN
8800011C28
UVD- A
DIFL
8900011C29
B
(†)
8A00011C2A
C
DIFL-DUV-EN
From DIFL main logic
DIFL-A
DIFL-B
DIFL-C
From RDIF
REMOTE.DIFL-A
REMOTE.DIFL-B
REMOTE.DIFL-C
A
UV-
B
DIFL
C
DIFL-UV-EN
AB
UVS-
BC
DIFL
CA
DIFL-UVS-EN
830001EBB0
DIFLFS-EN (‡)
†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
8000011C20
≥1
8000011B60
8100011C21
8200011C22
On
≥1
≥1
≥1
S 1
R
S 1
R
S 1
On
R
≥1
≥1
≥1
S 1
R
S 1
R
S 1
R
On
≥1
≥1
≥1
8000111C20
≥1
8800111B60
8100111C21
8200111C22
&
On
8400011C20
≥1
8900011B61
8500011C21
8600011C22
&
On
ADD.DIFLFS
Off
Figure 2.2-4 Check relays logic
- 32 -
&
≥1
≥1
8100011B61
&
≥1
8A00011B62
&
8300011BB0
6F2S1914 (0.49)
To DIFL main logic
DIFLFS-OP
To CT failure detection
UVD-DIFL-AT (†)
UVD-DIFL-BT (†)
UVD-DIFL-CT (†)
To CT failure detection
UV-DIFL-OP
UVS-DIFL-OP
GRL200 (Soft 033 & 037)