IB IL 24 AI 2/SF-230
4
6232A
Internal Circuit Diagram
Figure 3
Internal wiring of the terminal
points
Other symbols are explained in the
IB IL SYS PRO UM E User Manual.
5 5 6 4 A 0 0 3
+ 2 4 V ( U
M
)
+ 2 4 V ( U
S
)
I N T E R B U S
O P C
E E P R O M
R E F
2 4 V
+ 5 V
/ + 1 0 V
U
I N
U
I N
I
I N
I
I N
U
L +
U
A N A
U
L -
M U X
µ P
1
Key:
Protocol chip
Optocoupler
Power supply unit with electrical
isolation
Microprocessor with multiplexer
and analog/digital converter
Reference voltage
Electrically erasable
programmable read-only memory
Amplifier
Coupling network
O P C
x x x
X X X
M U X
µ P
R E F
E E P R O M