Toshiba V Series Manual page 147

SPI01 module internal circuitry
PI1(+)
PI1( - )
PI4(+)
PI4( - )
External
24 Vdc
power
supply
SPI01 module external wiring
 When mounted on UTBA1
(TB1/TB2)
GND
Pulse
generator
+
24 Vdc
GND
A ground bar (FSBR2) is used for shielding.
AMP
Trans-
former
insula-
tion
circuit
0 V
External power
supply monitoring
Module connector
SPI01
FG FG
1 PI1 (+)
2 PI1 ( - )
3 PI2 (+)
4 PI2 ( - )
5 PI3 (+)
6 PI3 ( - )
7 PI4 (+)
8 PI4 ( - )
9
10
11
12
13
14
15
16
17 (24 Vdc)
18 (0 V)
19
20
( - ) side internal
connection.
Internal CPU
circuit
Internal power
supply
Fixed voltage power
supply circuit
RS-485
trans-
ceiver
Phase A
System power supply Dual I/O bus
(24 Vdc)
(TB1/TB2)
GND FG
+ 1
- 2
Pulse
3
generator
4
5
6
7
8
9
10
11
12
13
14
15
16
17
+
18
24 Vdc
19
20
( - ) side internal
connection.
5. PI/O Module
Status
indicator/
switch
RS-485
trans-
ceiver
Phase B
SPI01
FG
PI1 (+)
PI1 ( - )
PI2 (+)
PI2 ( - )
PI3 (+)
PI3 ( - )
PI4 (+)
PI4 ( - )
(24 Vdc)
(0 V)
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