Improvement Of Interference Immunity - Siemens SIPART PS2 Operating Instructions Manual

Connect
5.1 Basic safety instructions
Maximum AC/DC switching voltage with UL approval E344532
The mechanical limit switch module 6DR4004-6K is approved for use for positioners with UL
approval. The maximum supply voltage in this case is 30 V AC/DC.
The mechanical limit switch module 6DR4004-8K is not approved for use for positioners with
UL approval.
If this information is ignored, the UL approval for the mechanical limit switch module for the
positioner becomes invalid.
Two-wire mode
NOTICE
Connection of voltage source to current input
Device damage if a voltage source is connected to the current input I
● Never connect the current input I
● Always use a voltage source with a maximum output current of I = 20 mA.
5.1.1

Improvement of interference immunity

Note
Improvement of interference immunity
● Lay signal cables separate from cables with voltages > 60 V.
● Use cables with twisted wires.
● Avoid getting too close to large electrical process cells.
● Use shielded cables to guarantee the full specification.
● Take account of the conditions for communication specified in the technical data.
Electromagnetic compatibility
The Macrolon enclosure is metalized from inside to increase the electromagnetic compatibility
(EMC) with respect to high-frequency radiation. The shield is connected to the threaded bush
shown in the following picture such that it is electrically conductive.
Note that this protection is effective only if you connect at least one of these bushes to the
earthed control valves through electrically conductive (bare) attachments.
80
CAUTION
destroyed.
to a voltage source, otherwise the positioner may be
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Operating Instructions, 02/2016, A5E00127926-AB
(terminals 6 and 7).
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SIPART PS2 with PROFIBUS PA