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Connecting up
4.5 Power supply 240 VAC
Information on the power supply
• The power supply is connected using two 2-pin plug-in terminal blocks). The terminal blocks
ship with the device.
• The power supply can be connected redundantly. Both inputs are isolated. There is no
distribution of load. When a redundant power supply is used, the power supply unit with the
higher output voltage supplies the SCALANCE XR-100WG alone.
• 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.
• Note the wiring rules.
Position and assignment
Figure 4-1
Contact
L1
M
4.5
Power supply 240 VAC
Notes on the power supply
Danger from line voltage for devices with a 240 VAC power supply
This device can only function correctly and safely if it is transported, stored, set up, and installed
correctly, and operated and maintained as recommended.
Connecting and disconnecting may only be performed by an electrical specialist.
Connect or disconnect power supply cables only when the power is turned off!
36
Position of the terminal block on a SCALANCE XR-100WG
Assignment
+24 VDC
Ground
WARNING
Contact
L2
M
Operating Instructions, 09/2020, C79000-G8976-C455-04
Assignment
+24 VDC
Ground
SCALANCE XR-100WG
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