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Installation

4.4 Installing / uninstalling the extender modules for SCALANCE X414-3E

SCALANCE X-400

Operating Instructions, 06/2015, C79000-G8976-C186-12

4.4

Installing / uninstalling the extender modules for SCALANCE X414-

4.4.1

Installing/uninstalling the EM495-8 twisted pair extender for SCALANCE X414-

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.

4. Remove the two 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 12 and 13 in the lower part of the extender module.

Siemens SCALANCE X-400 User Manual

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