Toshiba GR200 Series Instruction Manual page 271

failure.
Switch of OVS trip command
(ii)
The OVS function issues a trip command for the trip circuit (TRC†) when Trip is set for scheme
switch [OVS1-UseFor] as the normal trip operation. However, when an alarm signal in place
of the trip command is required, the user can set Alarm for the scheme switch [OVS1-UseFor].
†Note: For more information, see Chapter
Execution of OVS function
(iii)
Set On for scheme switch [OVS1-EN]. Otherwise, set Off for the scheme switch [OVS1-EN] if
the OVS1 element is not required to operate.
Scheme logic
2.13.5
Figure 2.13-4 shows the OVS function logic. Signal connection points "OVS1_BLOCK" are
provided for the block of the operation of the OVS elements. For testing, the OVS1-PU element
is provided; it generates a pick-up signal when the entering voltage is excesses of the threshold
anytime. For example, in the IDMT characteristic, using both monitoring points "8000011C20"
and "8000011C24" can facilitate to measure the pickup time after the excess.
8000011C20
AB
8100011C21
OVS1 BC
8200011C22
CA
8000011B60
≥1
8000011C24
AB
8100011C25
OVS1 PU
BC
8200011C26
CA
8000011B61
≥1
On
OVS1-EN
Block
OVS1-VTFBlk
800001EBB0 OVS1_BLOCK
DT
IDMT
Original
OVS1-Timer
Trip
Alarm
OVS1-UseFor
On
OVS2-EN
Block
OVS2-VTFBlk
810002EBB0 OVS2_BLOCK
OVS2-Timer
OVS2-UseFor
From VTF
VTF_DETECT
&
&
&
&
&
&
1
& ≥1
≥1
The logics of OVS2 and OVS2 PU are the same as the
&
logics of OVS1 and OVS2 PU.
Figure 2.13-4 OVS function logics
- 250 -
Relay application: Trip circuit
TOVS1
t 0
&
≥1
t 0
&
≥1
t 0
&
≥1
0.00 to 300.00s
&
≥1
&
&
OVS2-OPT-AB
OVS2-OPT-BC
OVS2-OPT-CA
OVS2-OPT-TRIP
OVS2-OPT-ALAR
M
OVS2-OPT
6F2S1915 (0.46)
.
8000011B62
OVS-OPT-AB
8100011B63 ≥1
OVS-OPT-BC
≥1
8200011B64
OVS-OPT-CA
≥1
8000011B65
OVS1-OPT
OVS2-OPT
&
OVS-OPT-TRIP
≥1
&
OVS-OPT-ALARM
≥1
OVS-ARC-BLOCK
GRZ200 (Soft 031 & 032)
To TRC