Connecting up
4.2 Power supply
SCALANCE XB-200
Operating Instructions, 09/2015, C79000-G8976-C359-03
25
Power supply
Notes on the power supply
Never operate the device with AC voltage or DC voltage higher than 32 V DC.
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 SCALANCE CB-200 IE
switches to electromagnetic interference 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 XB-200 with suitable overvoltage protection.
Information on the power supply
● The power supply is connected using a 3-pin plug-in terminal block (spring-loaded
terminal). The terminal block ships with the device and can also be ordered as a spare
part.
● The power supply can be connected redundantly. Both inputs are isolated. There is no
distribution of load.
● The power supply is connected over a high resistance with the enclosure to allow an
ungrounded set up. The two power inputs are non-floating.
● To wire up the power connector, use a copper cable of category 24-16 AWG or a cable
with a cross-section of 0.25 to 1.5 mm².
● To wire up the functional ground, use a copper cable of category 20-16 AWG or a cable
with a cross-section of 0.75 to 1.5 mm².
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