Siemens SIMATIC FS400 Anleitung Seite 169

+ 24V
-W1
1
-A1 -A2
1 3 4
SIMATIC FS400 3RG7845
Transmitter
2 5
-W1
2 SH
0V
PE
Shielded connection cables are recommended for extreme electromagnetic interferences. The
shield should be connected with FE on a large surface.
The safety-related transistor outputs carry out the spark extinction. With devices with transistor
outputs, it is therefore not necessary to use the spark extinction elements recommended by
safety/valve manufacturers etc. (RC modules, varistors or recovery diodes). These extend the
delay times of inductive switching elements.
Fig. 7.3-2: Connection example, machine interface, MIN-style plug
-K1
-K2
-W2
2 5 6
2 5 6
SIMATIC FS400 3RG7845
Receiver
1 3 4 7
-W2
1 3 4 SH
A1 A1
-K1 -K2
A2 A2
Var. B
Var. A
-K1
-K1 -K2
-K2
+ 24V
0V
PE
169