SCALANCE X-400 extender modules
Compact Operating Instructions, 04/2013, A5E00367421-10
19
Assembly
4
4.1 Safety notices for installation
WARNING
If a device is operated in an ambient temperature of more than 50 °C, the temperature of
the device housing may be higher than 70 °C. The device must therefore be installed so
that it is only accessible to service personnel or users that are aware of the reason for
restricted access and the required safety measures at an ambient temperature higher than
50 °C.
4.2 Installing/uninstalling the EM495-8 twisted pair extender for
SCALANCE X414-3E
Installing the twisted pair extender on the S7-300 standard rail
You require the following tools:
● slotted screwdriver with a 2.8 mm wide blade
● slotted screwdriver with a 5.5 mm wide blade
Note
Make sure that in addition to the extender width of 87 mm, there is a clearance of 20 mm
to the right of the basic device on the standard rail to be able to align the guide bolts of
the extender with the holes in the basic device during installation.
When installing a twisted pair extender on an S7-300 standard rail,
the basic device remains in position. Follow the steps below:
1. Remove the cover from slot 11 of the basic device.
2. Remove the right-hand side panel of the basic device. To do this, use a slotted
screwdriver with a 2.8 mm wide blade to loosen the two captive slug screws on slot 11 in
the upper and lower recesses as far as they will go.
3. Remove the side panel of the basic device from the basic device to the right.
Note
Keep the panel in a safe place in case the extender needs to be removed again later.
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