Festo CPX-FB13 Electronic Manual page 40

1. Installation
1.6 Pin assignment of power supply
1-26
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
EN 60950/VDE 0805.
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 CPX terminal 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.
Festo P.BE-CPX-FB13-EN en 0112NH