Connecting The Operating Voltage - Festo CP-FB5-E Manual

1. Installation
1.4

Connecting the operating voltage

1-12
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.
Please note
By the use of PELV power units, protection against electric
shock (protection against direct and indirect contact) is guar-
anteed with the Festo valve terminals in accordance with
EN 60204-1/IEC 204. Safety transformers with the adjacent
symbol must be used for supplying PELV networks. The valve
terminals must be earthed to ensure that they function cor-
rectly (e.g. EMC).
Information on the procedure as well as on the connecting
cables and power requirements can be found in the manual
"CP system, installation and commissioning."
Festo P.BE-CP-FB5-E-EN en 0112a