Siemens SIMATIC SCALANCE X-300M PoE, Compact Operating Instructions

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Note
Use media modules only in an approved modular device
Use an MM900 media module only for a device equipped with suitable slots for such modules.
Example: X308-2M.
The names and labeling of the media modules differ
● Example: The device is called, for example, MM992‑2SFP" [6GK5 992‑2AS00‑8AA0], the
labeling on the device is “9922AS”. You will find detailed information on the labeling of the
media modules in the "MM900 media modules" compact operating instructions.
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 third media module turned through 180° in slot 2.
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.
Assembling
5.6 Installation of modular devices
SCALANCE X-300M PoE
Compact Operating Instructions, 11/2019, A5E02630810-13
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