Siemens SINAMICS DCM Manual page 667

Dc converter

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11.2 Replacing components

Removing the existing CUD

Figure 11-11 CUD replacement 1

● Remove the memory card

● Remove the shield clamp

● Remove the Connector Board

● If a CBE20 is present: Unplug the PROFINET cable.

● Disconnect all plug-in connections on the CUD.

● Remove the support element

● Loosen the fixing screws of the CUD.

● Insert the supplied mounting aid.

● Withdraw the CUD carefully.

After removing the screws and before pulling out the CUD, the module must be raised

slightly and the supplied mounting aid (protective cover) inserted between the CUD and the

assembly bolts in order to prevent any damage to the CUD to be replaced.

There are sensitive components on the rear of the CUD that may be torn off or damaged by

coming into contact with the assembly bolts when pulling the CUD out without the mounting

. The connection wires remain in the terminals.

(only present in standard CUD).

Operating Instructions, 02.2015, A5E34763375/RS-AA/001

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SINAMICS DCM DC Converter