Toshiba GR-200 Series Instruction Manual page 190

the trip command is required, the user can set Alarm for the scheme switch [OV1-UseFor].
†Note: For more information about the trip circuit, see Chapter 2.23.
Execution of OV function
(iii)
Set On for scheme switch [OV1-EN]. Otherwise, set Off for the scheme switch [OV1-EN] if the
OV1 element is not required to operate.
Scheme logic
2.15.5
Figure 2.15-4 shows the OV1 logic. Signal connection points "OV1_BLOCK" are provided for
the block of the operation of the OV1 element. For testing, the OV1-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, the user can measure the pickup time after the excess
using both PLC monitoring points "8000011C20" and "8000011C24".
DT
IDMT
OV1-Timer
Original
OV1-EN
On
8000011C20
A
8100011C21
OV1 B
8200011C22
C
8000011B60
≥1
8000011C24
A
8100011C25
OV1 PU
B
8200011C26
C
8000011B61
≥1
800001EBB0 OV1_BLOCK
Block
OV1-VTFBlk
From VTF
VTF_DETECT
≥1
&
&
&
&
&
&
≥1
1
&
Figure 2.15-4 OV1 logic
- 171 -
TOV1
t 0
&
≥1
t 0
&
≥1
t 0
&
≥1
0.00 to 300.00s
&
≥1
&
&
&
&
Trip
OV1-UseFor
Alarm
6F2T0200 (0.15)
To Grouping logic
8000011B62
OV1-OPT-A
8100011B63
OV1-OPT-B
8200011B64
OV1-OPT-C
8000011B65
OV1-OPT
8000011B23
OV1-OPT-TRIP
8100011B66
OV1-OPT-ALARM
OV1-ARC-BLOCK
GRE200 (1,2)