Selecting The Power Unit - Festo CPX Electronic Manual

3. Installation

3.1.4 Selecting the power unit

Festo P.BE−CPX−SYS−EN en 0503b
Warning
In order to provide the electric supply, use only PELV
·
circuits as per IEC/DIN EN 60204−1 (Protective Extra−Low
Voltage, PELV).
Take into account also the general requirements for
PELV circuits as per IEC/DIN EN 60204−1.
Use only power packs which guarantee reliable
·
electrical isolation of the operating voltage as per
IEC/DIN EN 60204−1.
By the use of PELV power units, protection against electric
shock (protection against direct and indirect contact) is guar
anteed in accordance with IEC/DIN EN 60204−1 (electrical
equipment of machines, general requirements).
The current consumption of a CPX terminal depends on the
number and type of integrated modules and components.
Recommendation:
Used closed−loop power units.
·
When selecting the power units, check that they have
·
sufficient output. If required, ascertain here the current
requirement according to the following table.
Please note
Select a power unit which provides sufficient output for
later extensions to the CPX terminal.
Information on the power supply concept of the CPX terminal
can be found in section 1.1.3.
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