Festo CP-A08 Series, Manual, Page: 53 / 67

2.3.3 Connecting the load voltage
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 if they guarantee
reliable isolation in accordance with EN 60950/
VDE 0805.
By using PELV power units, protection against electric
shock (protection against direct and indirect contact) in
accordance with EN 60204-1 / IEC 204 is guaranteed
on Festo valve terminals. Safety transformers with the
adjacent designation must be used for supplying PELV
networks. The valve terminals must be earthed in order
to ensure their function (e.g. EMC).
The connected actuators are supplied with + 24 V DC
via the load voltage connection on the output module.
Use a cable with sufficiently large cross-sectional area
for the operating voltage.
2. Output module type CP-A08...-M12-...
2-14
CP-A08...-M12 9901b