Toshiba GR200 Series - 2.27.2 Scheme logic and settings

6F2S1914 (0.49)
GRL200 (Soft 033 & 037)
- 353 -
2.27.2 Scheme logic and settings
Figure 2.27-4 shows the scheme logic of the OSTV function. The user should set scheme switch
[OSTV-EN] On when the OSTV function is required to operate. The user should note that the
OSTV function should operate together multi-level overcurrent elements (OCMFS), which is
provided in the Failsafe function (FS. For more information of FS, see Chapter Relay
application: Fail safe ).
800000EBB0 OSTV BLOCK
From FS
&
OSTV-EN
On
1
BO
Trip
&
&
OSTV-1
8000011C23
8100021C23
≥1
OSTV-Output
OCMFS_OP_SEP
≥1
OSTV-OPT-TRIP
OSTV-OPT
OSTV-ARC-BLOCK
8200001B61
t 0
0.1s
To TRC
α
β
≥1
OSTV-2
α
β
≥1
Figure 2.27-4 OSTV logic
The signal output of the OSTV function is directed by the scheme switch [OSTV-Output].
When BO is set for [OSTV-Output], the OSTV signal is issued for the binary output circuit of
binary IO modules (BIO
1
). Conversely, when Trip is set for the [OSTV-Output], the OSTV signal
is issued for the trip circuit (TRC
2
).
1
Note: For more information about the binary output circuit, see Chapter Technical
description: Binary IO module .
2
Note: The TRC function is discussed separately. See Chapter Relay application: Trip
circuit .
The can use PLC connection point ‘OSTV_BLOCK’ to program blocking the operation of
the OSTV function, if the user wishes to stop the operation by receiving an external signal.