Werner Turck GmbH & Co. KG TNS32XL 用户手册

D101583 0207

The measures for prevention of the interference (EMC) are relevant 
for all three components. The manufacturer is obliged to undertake 
all possible measures to counter the development of sources of 
interference.

The installation design must be implemented to ensure that mutual 
interference of the individual components is avoided or kept to as 
low a level as possible.

„

Problem: interference radiation from the power supply when 
switching mode power supplies are used.
Remedy: use of a stabilized power supply

„

Problem: interference via the serial connection cable.
Remedy: improved cable shielding and/or read-write head 
earthing

„

HF interference via the antenna from another read-write head or 
via an external source of interference which operates using the 
same frequency.
Remedy: the interference from another read-write head can be 
avoided by using the selective mode (see manual 
BL ident Proxy-Ident-Block (PIB), D101578).

There are four possibilities for coupled interference:

„

Galvanic coupled interference

„

Capacitive coupled interference

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Inductive coupled interference

„

Radiated interference

There are different causes for the radiated interference on the data 
interface paths:

With cables and wiring:

„

Incorrect or poorly laid

„

Missing or incorrectly connected shield

„

Unfavourable arrangement of the cable