Disassembly - Siemens SIMATIC NET MM900 Compact Operating Instructions

Pulling a media module
To pull a media module, follow the same steps as when plugging, but in the reverse order:
1. Pull out the handle of the media module.
2. Pull the media module out of the device slot.
3. Close the device slot with a dummy cover if you are not plugging in another module.
Exchanging media modules - with change of medium
Exchanging a media module
If you replace an electrical media module with an optical media module (or vice versa), this can
lead to malfunctions. The IE switch therefore reacts as follows:
• The media module is disabled.
• The red fault LED "F" lights up.
• The event is shown in the log table in WBM.
Enabling a media module
To enable the replacement media module, restart the IE switch:
• The media module is active.
• The red fault LED "F" goes off.
5.2

Disassembly

Improper disassembly
Improper disassembly may result in a risk of explosion in hazardous areas.
For proper disassembly, observe the following:
• Before starting work, ensure that the electricity is switched off.
• Secure remaining connections so that no damage can occur as a result of disassembly if the
MM900 media modules for SCALANCE XR-500M
Compact Operating Instructions, 04/2022, A5E03275846-05
NOTICE
Operating the device only with closed module slots
The device meets degree of protection IP20, if all the module slots have either media
modules inserted or are closed by dummy covers. Do not start up the device with open
module slots since the ingress of objects can lead to damage.
If you operate the device with open module compartments, it is also not possible to
guarantee the maximum ambient temperature.
WARNING
system is accidentally started up.
installing and removing
5.2 Disassembly
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