Siemens 6GK5786-1FC00-0AA0, Operating Instructions Manual

Page: 48 / 86

Note
The requirements of EN61000-4-5, surge immunity tests on power supply lines, are met only
when a Blitzductor is used with 12 to 24 VDC:
BVT AVD 24
article number: 918 422
Manufacturer: DEHN+SÖHNE GmbH+Co.KG, Hans Dehn Str. 1, Postfach 1640, D -
92306 Neumarkt, Germany
Safety extra low voltage
WARNING
Power supply
The device is designed for operation with a directly connectable safety extra low voltage (SELV)
or through a limited power source (LPS).
The power supply therefore needs to meet at least one of the following conditions:
• Only safety extra low voltage (SELV) with limited power source (LPS) complying with IEC
62368-1 / EN 62368-1 / VDE 62368-1 can be connected to the power supply terminals
(exception: Power supply adapter for 100 - 240 VAC for the SCALANCE W786).
• The power supply unit for the device must meet NEC Class 2 according to the National
Electrical Code (r) (ANSI / NFPA 70).
If the equipment is connected to a redundant power supply (two separate power supplies),
both must meet these requirements.
Exception:
Power supply with PELV (according to VDE 0100-410 or IEC 60364-4-41) is also possible if the
generated rated voltage does not exceed the voltage limits 25 VAC or 60 VDC.
Grounding
WARNING
Danger to life from overvoltage, fire hazard
When using outdoor antennas, the shared or grounded pin of the circuit must be connected to
the shield of the coaxial cable and to all touchable conductive parts and circuits. Otherwise,
there may be impermissibly high voltages on touchable parts in the event of a fault.
Connecting up
6.1 Safety when connecting up
SCALANCE W786-x
48
Operating Instructions, 12/2021, A5E03678337-14