Siemens SCALANCE X-400 Operating Instructions Manual page 94

Installation
4.4 Installing / uninstalling the extender modules for SCALANCE X414-3E
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.
4. Remove the four covers from the extender.
5. Place the extender module on the edge of the S7-300 standard rail with the upper groove
angled slightly towards the back and tilt the extender towards the back. Make sure that
there is adequate clearance between the guide bolts of the extender module and the
basic device. In this position, the extender module should not be able to slip off, however
it can be moved horizontally in both directions.
6. Push the extender module slowly to the left while keeping it straight and without skewing
and check that the two guide bolts on the extender fit into the holes in the basic device.
Then push the extender module to the left as far as it will go so that it is flush with the
right side of the basic device.
7. Using a slotted screwdriver with a 5.5 mm wide blade, tighten the captive screw between
slots 13 and 14 in the lower part of the extender module.
8. Using a slotted screwdriver with a 2.8 mm wide blade, tighten the two captive slug screws
on slot 11. The screws lock the two guide bolts, so do not use excessive force when
tightening them.
9. Fit the CV490 4x100 cover on slot 11 of the basic device. Make sure that the media
module terminal strips of slots not occupied by media modules have protective caps fitted
and that the CV490 2x100 covers are in place.
Figure 4-8
94
Installing the media module extender on the S7-300 standard rail
Operating Instructions, 06/2015, C79000-G8976-C186-12
SCALANCE X-400