Protouch-wide: user documentation
DOC/PROTOUCH-WIDE; V1.5
DOC_PROTOUCH_WIDE_V1.5.docx
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3.2
Installation and cabling
3.2.1
Introduction
Installation and cabling of the PROTOUCH-WIDE system has to be done with great care; the correct cabling is essential for high operational
reliability and the correct grounding is necessary for protection and EMC. To meet the requirements of
CE
-certification all cables must be shielded.
The enclosure must be connected to ground via the designated fastener (see 1.1for details).
Important
Note
To meet the requirements of EMI/RFI
CE
-certification, correct mounting, installation and cabling of the
PROTOUCH-WIDE system according to these guidelines is absolutely necessary.
3.2.2
Powering the PROTOUCH-WIDE System
The
logic supply voltage
, i.e. the power driving the electronic circuits (motherboard and extensions) is internally generated from the 12/24VDC
power supply input. Remember that the power supply is non-isolated. The power supply has to be connected according to paragraph 2.4.3 .
When selecting the external power supply, the maximum power dissipation of the system has to be considered.
Please make sure that the input voltage does not exceed the recommended operating
range otherwise the electronics board could get damaged and correct operation
cannot be guaranteed.
Use an overload protected power supply to prevent damage in case of a short inside
the system.
The AC/DC power supply must fulfil the requirements for EMI/RFI
CE
-certification.
3.2.3
Cabling the interfaces
Use appropriate cabling for all interfaces. Shielded cabling is required to meet the EMI/EMC limits.
