Siemens SCALANCE XR324-4M EEC, Краткое руководство по эксплуатации

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6.7.2.2 Connecting the 100 to 240 VAC power supply
Power supply 100 to 240 VAC / 60 to 250 VDC
The switch is available in the following versions for power supply with the multirange power
supply unit 100 to 240 VAC / 60 to 250 VDC:
● With single power supply unit (1 x 100 to 240 VAC / 60 to 250 VDC)
● With redundant power supply unit (2 x 100 to 240 VAC / 60 to 250 VDC)
Each power supply unit PS1 and PS2 has a separate supply connector.
You can recognize the type of power supply from the labeling on the device and the labeling of
the terminal block for the power supply of the switch.
On devices with a 100 to 240 VAC power supply, the connectors of the signaling contact and
the power supply are identical. To avoid confusion, the two pins have a different coding.
Grounding
WARNING
Danger from line voltage
Grounding simply via the housing is inadequate.
In this case, connect the functional ground to ensure reliable operation.
With devices with a supply voltage of 100 to 240 VAC / 60 to 250 VDC, you should also
connect the protective earth to the grounding bolt.
On the SCALANCE X-300EEC, the grounding bolt is on the bottom of the device.
On the SCALANCE XR-300M EEC, the grounding bolt is on the rear of the housing between
the power connectors.
Connecting to the power supply
The connection is made via one (or two) 3-pin connector(s) on the terminal block for the power
supply.
NOTICE
Damage to the device due to incorrectly wiring the terminal blocks
With devices with a supply voltage of 100 to 240 VAC and 60 to 250 VDC, the terminal blocks
for the power supply and signaling contact are plugged in and screwed down in the device.
Both terminal blocks have three pins but coding prevents the two terminal blocks being
confused.
Make sure that the cables of the power supply and the cables for the signaling contact are
connected to the correct terminal block.
Connecting
6.7 Power supply
SCALANCE XR-300M EEC
Compact Operating Instructions, 11/2019, A5E02661176-14
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