Siemens SIMATIC NET SCALANCE XF-200BA Operating Instructions Manual page 52

Connecting up
5.4 Power supply
Damage to the device due to overvoltage
The connector of the external power supply is not protected against strong electromagnetic
pulses that can, for example, result from lightning strikes or switching large loads.
One of the tests used to attest the immunity of devices of the IE switches SCALANCE XF-200BA
to electromagnetic interference, among others, is the "surge immunity test" according to
EN61000-4-5. This test requires overvoltage protection for the power supply lines. A suitable
device is, for example, the Dehn Blitzductor BVT AVD 24, article number 918 422 or a
comparable protective element.
Manufacturer: DEHN+SOEHNE GmbH+Co.KG, Hans-Dehn-Str.1, Postfach 1640, D92306
Neumarkt, Germany
Operate the SCALANCE XF-200BA with suitable overvoltage protection.
Information on the power supply
• The power supply is connected via two 2-pin plug-in terminal blocks that ship with the device.
• The power supply can be connected redundantly.
– Both inputs are isolated.
– No load distribution.
– The power supply unit with the higher output voltage supplies the device alone.
• Power: 24 VDC
• Cable cross-section: max. 2.5 mm
• The power supply is connected over a high resistance with the enclosure to allow an
ungrounded set up.
• The power supply is non-floating.
• The signal cables of the electrical Ethernet interfaces are floating.
Position and assignment
Figure 5-1
52
CAUTION
Position of the power supply and assignment of the terminal blocks
2
Operating Instructions, 02/2023, C79000-G8976-C470-08
SCALANCE XF-200BA