Installation
4.8 Installation of modular devices
SCALANCE XR-300M PoE
Compact Operating Instructions, 05/2016, A5E02661178-10
37
CAUTION
Remember the orientation of media modules
On modular devices, there are always two module slots arranged opposite each other.
Remember the correct orientation when installing MM900 media modules.
Example:
•
Install the first media module in slot 1.
•
Install the second media module turned through 180 degrees in slot 2 opposite the first
slot.
On modular devices for rack mounting, pairs of module slots are located one above the
other in which modules can be inserted in a specific order:
Example of a rack device:
•
Install the first media module in slot 1.
•
Install the third media module turned through 180° in slot 3.
Other modules are then installed in slot 2 and 4.
The permitted operating temperature is decided by the fully equipped device (
media SFP transceiver).
With modular devices, it is not only the switch that decides the permitted operating
temperature of the overall device but also the temperature ranges of the MM900 media
modules and the SFP transceivers. You will find details in the technical specifications of the
relevant components.
The following aspects can restrict the maximum permitted operating temperature:
•
The orientation of the carrier device.
•
The use of SFP transceivers.
•
The use of transceivers of the types LH, LH+ or ELH.
Note
Slot number
With modular devices, the MM900 media modules must be given a slot number.
The slot number labels are supplied with the modular devices.
Additional safety notices for the XR 324-4M PoE TS
Note
Loss of conformity with the railway standard EN 50155
If you install unvarnished modules in the XR 324-4M PoE TS, the device no longer meets the
requirements of the railway standard EN 50155.
Only install varnished modules in the XR 324-4M PoE TS.
