Binary Input And Output Module - Toshiba GRT100 Series Instruction Manual

3.1.4

Binary Input and Output Module

There are four types of binary input and output module (IO module): IO1 to IO3. IO1 and IO2 are
used for all the relay models, while IO3 is used depending on the model (see Section 3.1.1).
3.1.4.1 IO1 Module
As shown in Figure 3.1.6, the IO1 module incorporates a DC/DC converter, 13 photo-coupler
circuits (BI1-BI13) for binary input signals and 5 auxiliary relays (TP-1 to TP-5) dedicated to the
circuit breaker tripping command.
The input voltage rating of the DC/DC converter is 48/60V, 110V/125V or 220V/250V. The
normal range of input voltage is 20% to +20%.
The five tripping command auxiliary relays are the high-speed operation type and have one
normally open output contact.
DC
supply
Binary
input
signals
IO1 module
(+)
Line filter

( )
FG
Photo-coupler
BI1
BI 2
BI 3
BI 12
BI 13
Figure 3.1.6 IO1 Module
 50 
DC/DC
converter
Auxiliary relay
(high speed)
TP-1
-
TP-2
TP-3
TP-4
TP-5
6 F 2 S 0 7 8 9
Tripping
command