Active Line Modules With Internal Air Cooling; Description; Safety Information - Siemens SINAMICS S120 Equipment Manual

Line Modules Booksize

3.2 Active Line Modules with internal air cooling

3.2 Active Line Modules with internal air cooling
3.2.1

Description

Active Line Modules generate a constant, regulated DC voltage in the DC link from the three-
phase line supply voltage that supplies the connected Motor Modules with power.
This ensures that they are not influenced by network fluctuations.
When the motors are in feedback mode, Active Line Modules supply power back to the
network. The regenerative feedback capability of the modules can be deactivated by
parameterization.
The DC link starts precharging as soon as the supply voltage is applied and is independent
of its phase sequence direction. Load can be applied to the DC link after the modules have
been enabled. An optional main contactor is required for disconnecting the voltage.
Active Line Modules can be directly connected to TN and TT line supplies - both with
grounded neutral point and also with grounded protective conductor; they can also be
connected to IT line supplies. The Line Modules have an integrated overvoltage protection
function.
3.2.2

Safety information

Risk of electric shock. A hazardous voltage is present for 5 minutes after the power supply
has been switched-off.
It is only permissible to open the protective cover after this time has expired.
When opening the protective cover for the DC link, you must activate the release.
A suitable tool (e.g. screwdriver) must be used for this purpose.
The components must only be operated when the protective cover of the DC link is closed.
Damaged components must not be used further, as this could result in secondary damage
or accidents.
The DC link discharge time warning in the local language must be attached to all of the
components.
A set of labels in 16 languages is supplied with the component.
136
DANGER
DANGER
Equipment Manual, (GH2), 07/2007, 6SL3097-2AC00-0BP5
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