L37, Dc Interface Incl. Pre-Charging Input Circuit For The Relevant Dc Link Capacitance; General Information; Dc Interface Incl. Pre-Charging For Motor Module In Chassis Format - Siemens SINAMICS S120 Equipment Manual

Options

8.20 L37, DC interface incl. pre-charging input circuit for the relevant DC link capacitance

8.20 L37, DC interface incl. pre-charging input circuit for the relevant DC
link capacitance
8.20.1

General information

Availability of option
This option is available for the following S120 Cabinet Modules:
● Motor Module in chassis format
● Booksize Cabinet Kit
Description
If the Motor Module is to be disconnected or reconnected to the DC link of a drive line-up
while the other Motor Modules and Line Modules remain in operation, this can be
accomplished via the DC interface.
8.20.2

DC interface incl. pre-charging for Motor Module in chassis format

The main component of option L37 is a switch disconnector. This switch disconnector is
installed on the busbar between the Motor Module and the DC busbar. This option also
includes a pre-charging switch for the DC link capacitors of the relevant Motor Module so
that it can be switched in to the pre-charged DC busbar.
This switch can be actuated using an operating lever but only when the cabinet door is
closed.
As an air guide, option L37 also includes option M60 (additional shock protection).
Note
This option is not used for switching the module on and off during operation.
382
S120 Cabinet Modules Equipment Manual
Manual, (GH5), 10/2008, A5E00427098A