Siemens X-400 - Manual (Page 76)

Installation and Commissioning
Operating Instructions for SCALANCE X-400 Industrial Ethernet Switches
76 C79000-G8976-C186-03
6.3 Installing / Removing Extender Modules
6.3.1 Installing / Removing the Twisted Pair Extender
Installing the Twisted Pair Extender on the S7-300 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 S7-300 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 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.
4. Remove the two covers from the extender.
5. Place the extender module on the edge of the S7-300 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 ex-
tender 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 di-
rections.