Replacing The Pre-Charging Resistors Of The Dc Interface (Option L37) - Siemens SINAMICS S120 Device Manual

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Table of Contents

Maintenance and servicing

6.4 Replacing components

Replacing the pre-charging resistors of the DC interface (option L37)

Preparatory steps

● Disconnect the cabinet from the power supply (do not forget the external power supplies).

1. Remove the DC interface (see section "Replacing the DC interface")

2. Remove the fastening screws for the pre-charging resistors.

3. Remove the resistors.

Installation

1. Insert the new resistors.

2. Tighten the fastening screws of the pre-charging resistors.

3. Re-install the DC interface.

Cabinet Modules NEMA

Manual, 04/2014, A5E03586450A