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6.4
Grounding
Mounting the switch on a DIN rail
The switch is grounded over the DIN rail.
Mounting the switch on an S7 standard rail
The switch is grounded over the screw on the rear of the device.
Mounting the switch on a wall
IE Switches X-300 must be grounded with minimum resistance.
The switch is grounded via the unpainted holes in the housing of the switch and the securing
screws.
If the switch is mounted on a non-conductive base, you will need to use the grounding cable.
The grounding cable is not supplied with the device. Connect the paint-free surface of the
switch to the nearest grounding point using the grounding cable.
6.5
24 VDC signaling contact
24 V DC signaling contact
Note
Supply voltage at signaling contact for XR-300M and XR-300M-PoE
At the signaling contact, there is always a voltage of 24 VDC even if the device can be operated
with 100 to 240 VAC.
● The signaling contact is connected to a 2-pin plug-in terminal block.
The signaling contact can be subjected to a maximum load of 100 mA (safety extra‑low
voltage SELV, 24 V DC).
SCALANCE X-300M PoE
Compact Operating Instructions, 11/2019, A5E02630810-13
Connecting
6.5 24 VDC signaling contact
47
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