Siemens SCALANCE X-400 Operating Instructions Manual page 90

Installation
4.4 Installing / uninstalling the extender modules for SCALANCE X414-3E
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 to slot 11 of the basic device and slots 12 and 13 of the
twisted pair extender.
Figure 4-6
Removing the twisted pair extender from 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
When removing a twisted pair extender from an S7-300 standard rail, the basic device
remains in position. Follow the steps below:
1. To remove an extender module, remove the two covers on the extender.
2. Using a slotted screwdriver with a 5.5 mm wide blade, open the captive screw between
slots 12 and 13 in the lower part of the extender module.
3. Remove the cover from slot 11 of the basic device.
4. Use a slotted screwdriver with a 2.8 mm wide blade to loosen the two captive slug screws
on slot 11 of the basic device in the upper and lower recesses as far as they will go.
5. Push the extender module slowly to the right while keeping it straight until the two guide
bolts of the extender module are completely outside the holes in the basic device.
6. Pull out the lower part of the extender module slightly towards the front and lift it from the
S7-300 standard rail.
90
Installing the twisted pair extender on the S7-300 standard rail
Operating Instructions, 06/2015, C79000-G8976-C186-12
SCALANCE X-400