Siemens SCALANCE XR-300M Compact Operating Instructions page 34

Mounting
5.3 19" rack mounting
19" rack mounting
3. Insert the rack device (R) in the 19" cabinet and hold the
rack device (R) at the required height. Make sure that
nothing is obstructing air from entering the ventilation
grilles.
Fit the securing screws to the two mounting brackets to
secure the rack device (R) in the 19" cabinet.
4. Connect the grounding bolts. On the SCALANCE
X-300EEC, the PE connector is on the bottom of the de‐
vice. On the SCALANCE XR-300M EEC, the PE connec‐
tor is on the rear of the device between the power con‐
nectors.
5. Fit the connectors for the power supply.
Note that the SCALANCE X-300 is available for different
power supplies (100 to 240 VAC and 24 VDC variants).
6. Fit the remaining connectors, for example the signaling
contact.
Example of individual installation
Note
Individual installation of the SCALANCE XR-300M
Devices of the XR-300M category can also be installed upright in a cabinet door. In this case,
the LED display is at the front and the data cable outlet at the back at the cabinet door.
Make sure that the mounting bracket is correctly positioned on the rack device (R) so that the
rack device (R) can be mounted securely on the cabinet door.
Desktop operation (only 24 V DC variants with adhesive feet)
No desktop operation for devices with 100 to 240 V AC power supply
Desktop operation is permitted only for the 24 VDC variants of the rack devices (R).
The adhesive feet ship with the 24 VDC variants. The permitted ambient temperature for
desktop operation is -40 °C to +50 °C.
Desktop operation (only 24 VDC variants with adhesive feet)
1. Select the required 24 V variant of the rack device (R).
2. Lay out the four adhesive feet in preparation.
34
CAUTION
Compact Operating Instructions, 11/2019, A5E02661171-15
SCALANCE XR-300M