Connecting up
6.5 Connecting a power supply adapter
SCALANCE W786 outdoor access point
48
Operating Instructions, 06/2013, A5E02280428-08
NOTICE
Exceeding the EMC limit values
•
SCALANCE W786 with RJ-45 interface with DC power supply adapter or without power
supply adapter
When using a SCALANCE W786 with RJ-45 connector without a power supply adapter or
with a DC power adapter, no additional measures are necessary for use in a residential
environment.
•
SCALANCE W786 with RJ-45 interface with AC power supply adapter PS791-2AC
When using a SCALANCE W786 with a power supply adapter PS791-2AC (100-240 V AC),
the requirements for use in an industrial environment are met without any additional
measures being necessary.
When used in a residential environment, noise produced by this configuration can be
reduced by fitting an EMC ferrite (a snap ferrite) to the power supply cable as close as
possible to the power supply adapter. You can order suitable ferrites from the following
company:
Würth Elektronik eiSos GmbH & Co. KG
Max-Eyth-Strasse 1 – 3
D-74638 Waldenburg, Germany
Model designation: STAR-TEC with safety key technology
cable diameter 6 – 7.5 mm: Order no. 74271131
cable diameter 7 – 8.5 mm: Order no. 74271132
•
SCALANCE W786 with fiber-optic interface
The SCALANCE W786 devices with a fiber-optic interface generally only meet the emission
limit values for use in an industrial environment.
If you use the power supply adapter PS791-2AC (100 -240 V AC voltage) in a domestic
area (EMV class B), fit an EMC ferrite (a snap ferrite) to the supply cable as close as
possible to the power supply adapter. This measure is unnecessary in an industrial
environment.
