Festo CPX-FB23, Electronic Manual

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1. Installation
1−29
Festo P.BE−CPX−FB23−EN en 0308NH
1.4 Pin assignment for power supply
Warning
Use only power units which guarantee reliable isolation of
the operating voltages as per IEC 742/EN 60742/VDE 0551
with at least 4 kV isolation resistance (Protected Extra Low
Voltage PELV). Switch power packs are permitted, provid
ing they guarantee reliable isolation in accordance with
EN60950/VDE0805.
By the use of PELV power units, protection against electric
shock (protection against direct and indirect contact) is guar
anteed in accordance with EN 60204−1/IEC 204. Safety trans
formers with the adjacent symbol must be used for supplying
PELV networks. The device must be earthed to ensure that it
functions correctly (e.g. EMC).
The current consumption of a CPX terminal depends on the
number and type of integrated modules and components.
Read the information on power supply as well as on the
earthing measures to be carried out in the CPX system
manual.