Application 1: Safety Mode Ak4/Sil2/Category 3 - Siemens SIMATIC ET 200S Installation And Operating Manual

Fail-Safe Modules
7.5 4/8 F-DI VDC24V PROFIsafe Digital Electronic Module
7.5.6

Application 1: Safety Mode AK4/SIL2/Category 3

Sensor Supply
The EM 4/8 F-DI 24 VDC PROFIsafe provides sensor supply Vs1 for inputs 0 to 3 and
sensor supply Vs2 for inputs 4 to 7. The sensor supply can be provided internally or
externally.
Wiring Diagram for Application 1 - Connecting One Sensor to One Channel
One 1-channel sensor (1oo1 evaluation) is connected for each process signal.
The wiring is carried out on the appropriate terminal module.
Figure 7-20
Figure 7-21
7-56
Wiring Diagram for EM 4/8 F-DI DC24V PROFIsafe - One Sensor Connected via One
Channel, Internal Sensor Supply
Wiring Diagram EM 4/8 F-DI DC24V PROFIsafe - One Sensor 1-Channel Connected,
External Sensor Power Supply
Hardware Installation and Operating Manual, 07/2005, A5E00103686-04
ET 200S Distributed I/O System - Fail-Safe Modules