Wiring Front Connectors - Siemens simatic s7-400 FM 450-1 User Manual

4.3

Wiring Front Connectors

Cables
There are a few rules you must observe when selecting the cables:
● The cables for the digital inputs must be shielded.
● The cables for the count signals must be shielded.
● You must apply the shields to the count signal cables both on the pulse encoder and in
● Cables A and /A, B and /B, N and /N of the incremental 5-V encoder must be twisted in
The following figure shows details relating to the connection of incremental 5-V encoders.
Counter module FM 450-1
Manual, 02/2014, A5E03648739-02
close proximity to the module, e.g. via the shield application element.
pairs.
4.4 Module status after power is switched on
Wiring
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