PROTOUCH-WIDE MONITOR: user documentation - PRELIMINARY
DOC/PROTOUCH-WIDE_MONITOR; V0.2
DOC_PROTOUCH-WIDE_MONITOR_V0.3.docx
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3.2
Installation and cabling
3.2.1
Introduction
Installation and cabling of the PROTOUCH-WIDE MONITOR 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 4.3 for details).
Important
Note
To meet the requirements of EMI/RFI
CE
-certification, correct mounting, installation and cabling of the
PROTOUCH-WIDE MONITOR system according to these guidelines is absolutely necessary.
3.2.2
Powering the PROTOUCH-WIDE MONITOR 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 2.4.2 .
Maximum allowed cable length between AC/DC power supply and system power input is 3m. If the cable is longer than 3m or routed outside
the building, special overvoltage and filtering elements have to be installed to comply with the requirements of EMI/RFI
CE
-certification.
When selecting the external power supply, the maximum power dissipation of the system has to be considered.
The PROTOUCH-WIDE MONITOR system must only be operated indoors and must be
connected to an indoor power supply. Maximum cable length allowed for power
supply connection is 3m. If longer cables are used, special overvoltage and filtering
elements must be installed to comply with the requirements of EMI/RFI
CE
-
certification.
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.
