Use Case 1: Safety Mode Sil2/Category 3 - Siemens SIMATIC Operating Instructions Manual

8.1.6

Use Case 1: Safety Mode SIL2/Category 3

Sensor Supply
The sensors can be powered internally or externally.
Table 8-4
Input channels DI 0 to DI 3: Sensor supply Vs1
Input channels DI 4 to DI 7: Sensor supply Vs2
Input channels DI 8 to DI 11: Sensor supply Vs3
Input channels DI 12 to DI 15: Sensor supply Vs4
Wiring Diagram for Use Case 1 – Connecting One Sensor Via One Channel
One sensor is connected via one channel for each process signal (1oo1 evaluation).
The wiring is carried out at the appropriate connection module.
The figures below illustrate an example wiring diagram for channel groups 1 and 2.
1L+
1L+ M
L+
Figure 8-3
1L+
1L+ M
L+
Figure 8-4
ET 200pro Distributed I/O System - Fail-Safe Modules
Operating Instructions, 05/2007, A5E00394073-02
Use Case 1: Assignment of Sensor Supply to Input Channels
8/16 F-DI DC24V PROFIsafe
Vs1 DI0
S0
M
Wiring Diagram for F-DI Modules - One Sensor Connected Via One Channel, Internal
Sensor Supply
Vs1 DI0
S0
M
Wiring Diagram for F-DI Modules - One Sensor Connected Via One Channel, External
Sensor Supply
8.1 8 /16 F-DI DC24V PROFIsafe Digital Electronic Module
4/8 F-DI/4 F-DO DC24V/2A PROFIsafe
Input channels DI 0 to DI 3: Sensor supply Vs1
Input channels DI 4 to DI 7: Sensor supply Vs2
8/16 F-DI
4/8 F-DI/4 F-DO
DI1 DI2 DI3
S1 S2 S3
8/16 F-DI
4/8 F-DI/4 F-DO
DI1 DI2 DI3
S1 S2 S3
Fail-Safe Electronic Modules
Vs2 DI4 DI5 DI6
S4 S5 S6
Vs2 DI4 DI5
S4 S5 S6
DI7
S7
DI6 DI7
S7
65