Spring-Loaded Terminal; Power Supply - Siemens SIMATIC NET SCALANCE XM-400 Operating Instructions Manual

Connecting up

6.2 Spring-loaded terminal

6.2 Spring-loaded terminal
The following figure shows the individual components of a spring-loaded terminal:
①
②
③
6.3

Power supply

Notes on the power supply
Incorrect power supply
If the device is connected to a redundant power supply (two separate power supplies), both
must meet these requirements.
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 CM-400 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 XM-400 with suitable overvoltage protection.
Note
The extenders and pluggable transceivers are supplied with power via the basic device.
58
Wire inlet For connecting the wire
Button For releasing the wire
Test contact For measuring the voltage
WARNING
CAUTION
Operating Instructions, 09/2018, C79000-G8976-C306-08
SCALANCE XM-400