Festo SPC-10 Series, Manual

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3.3.2 Connecting the operating voltage and the I/Os
WARNING
Use only power units which guarantee reliable isola-
tion of the operating voltages as per IEC 742/EN
60742/VDE 0551 with at least 4 kV isolation resist-
ance. Switch power packs are permitted, providing
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 the SPC-10. Safety transformers with the adjacent
designation must be used for supplying PELV networks.
The SPC-10 must be earthed in order to ensure that it
functions correctly (e.g. EMC).
CAUTION
Connect the earth connection on the left-hand side
of the housing with low impedance (short cable with
large cross-sectional area) to the earth potential.
In this way, you will avoid interference caused by elec-
tromagnetic influences.
PLEASE NOTE
Use only the original cable type KSPC10-SPS-10 for
connecting the voltage supply and the I/Os.
3. Installation
3-26
SPC-10 9902a