Siemens SCALANCE X-400 Operating Instructions Manual page 92

Installation
4.4 Installing / uninstalling the extender modules for SCALANCE X414-3E
5. The spring clip must be located behind the edge of the DIN rail so that it is visible from
the rear of the frame.
6. Press the extender module down and push in the lower part until you hear it click into
place in the DIN rail.
7. 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.
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 4-7
Removing the twisted pair extender from the 35 mm DIN rail
To remove the device, you require a slotted screwdriver with a 2.8 mm wide blade. The
captive screw in the lower part of the extender module between slot 12 and 13 is not used
for mounting on an 35 mm DIN rail. When removing a twisted pair extender from a 35 mm
DIN rail, the basic device remains in position. Follow the steps below:
1. Remove the cover from slot 11 of the basic device.
2. 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.
3. 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.
92
Installing the twisted pair extender on the 35 mm DIN rail
Operating Instructions, 06/2015, C79000-G8976-C186-12
SCALANCE X-400