Toshiba GR200 Series Instruction Manual page 234

after the reception of the DEFCAR signal that is prolonged by the setting [TDEFCF]. Figure
2.13-12 shows the relationship of sending-signal, receiving-signal, and tripping in the
DEFCAR function.
Sending DEFCAR signal
Receiving DEFCAR signal
DEFCAR issuing a trip signal
Figure 2.13-12 Sending signal and receiving signal shared in DEFCAR
Carrier signal reception
2.13.5
IED has two types of carrier signal transmission style. One is the general style of outputting
and sending a carrier signal from a binary output and receiving it from a binary input. It is
called "external carrier communication". The other is a special style that uses the transmission
control function (DIF_COMM) to send and receive carrier signals, which can only be used with
IEDs that has the DIF_COMM function. It is called "integral carrier communication".
Figure 2.13-13 shows how to receive carrier signals from the remote terminal 1. In the external
carrier communication, the carrier signal received by the binary inputs is connected to PLC
connection point (DEFCAR-R1). As a result, (External DEFCAR-R1) signal will be generated.
In addition, DEFCAR has the scheme switch [DEFCAR-CHSEL]. By this setting, (External
DEFCAR-R1) signal generation is as follows.
(External DEFCAR-R1) signal will be generated by only (DEFCAR-R1).
Single:
(External DEFCAR-R1) signal will be generated by (DEFCAR-R1) and
And:
(DEFCAR-R1-2) for fail safe.
(External DEFCAR-R1) signal will be generated by (DEFCAR-R1) and non
Guard:
(DEFCAR-R1-2) for fail safe.
In the integral carrier communication, the received carrier signals transmitted by the
DIF_COMM function are connected to PLC connection point (INT.DEFCAR-R1-*). As a result,
(Integral DEFCAR-R1-*) signals will be generated.
DEFCAR pickup
[TDEFCF]
- 211 -
BO Off delay
Communication delay
[TDEFC]=0
6F2S1914 (0.49)
GRL200 (Soft 033 & 037)