Fail-Safe Modules
7.6 EM 4 F-DI/3 F-DO DC24V PROFIsafe digital electronic module
ET 200S Distributed I/O System - Fail-Safe Modules
152
Installation and Operating Manual, 08/2008, A5E00103686-07
Application 1.3: Wiring diagram of the nonequivalent connection of a nonequivalent sensor to two
channels
A nonequivalent connection of a 2-channel sensor is connected nonequivalently to two
inputs of the F-I/O module for each process signal (1oo2 evaluation).
The left-hand channels on the F-module (DI0 through DI3) supply the wanted signals. If no
faults are detected, these signals will be available in the I/O area for inputs on the F-CPU.
The wiring is carried out on the appropriate terminal module.
30(
)',)'2
/
0
/
0
96
',
6
6
6
6
',
',
',
',
',
',
',
7KHOHIWKDQGFKDQQHOVRQWKH)PRGXOHVXSSO\
WKHZDQWHGVLJQDOV
Figure 7-42 Wiring diagram EM 4 F-DI/3 F-DO DC24V - a nonequivalent 2-channel sensor
connected via two channels non-equivalently, internal sensor supply
30(
)',)'2
/
0
/
0
96
',
6
6
6
6
',
',
',
',
',
',
',
7KHOHIWKDQGFKDQQHOVRQWKH)PRGXOHVXSSO\
WKHZDQWHGVLJQDOV
Figure 7-43 Wiring diagram EM 4 F-DI/3 F-DO DC24V - a non-equivalent sensor connected via two
channels non-equivalently, external sensor supply
