Festo SFC-DC series, Manual

Page: 50 / 202

3. Installation
3−6
Festo P.BE−SFC−DC−IO−EN en 0801a
3.2 Power supply
Warning
·
In order to provide the electric supply, use only PELV
circuits as per IEC/DIN EN 60204−1 (Protective Extra−Low
Voltage, PELV).
Take into account also the general requirements for
PELV circuits as per IEC/DIN EN 60204−1.
·
Use only
power packs
which guarantee reliable electrical
isolation of the operating voltage as per IEC/DIN
EN60204−1.
By the use of PELV power units, protection against electric
shock (protection against direct and indirect contact) is guar
anteed in accordance with IEC/DIN EN 60204−1 (electrical
equipment of machines, general requirements).
The internal power and controller electronics are supplied
with DC voltage via the power supply connection.
Please note
Note that the tolerances for the power supplies must be
observed, see Tab.3/4. The tolerance must be observed
directly at the power connection of the SFC−DC.
·
For the power supply, use exclusively one of the follow
ing cables from the Festo accessories:
power supply cable KPWR−MC−1−SUB−15HC−...
cable length max. 10 m.
·
Use a closed−loop power unit with:
at least 5 A peak current.