Active Line Modules With Cold Plate; Description; Safety Information - Siemens SINAMICS S120 Equipment Manual

Active line modules with cold plate

5.1

Description

5.1
The Motor Modules are connected to the power supply network via the Active Line Modules
which provide the Motor Modules with a constant DC link voltage.
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.
The Active Line Modules are suitable for direct operation on TN, IT, and TT systems.
5.2

Safety Information

5.2
Warning
After disconnecting all the supply voltages, a hazardous voltage will be present in all
components for another 5 minutes. The protective cover must not be opened until this time
has elapsed.
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, otherwise this could result in secondary damage
or accidents.
Warning
A sufficiently high short-circuit power is required for tripping the fuses within the predefined
time in the event of a ground fault. Insufficient short-circuit power increases the time to trip
beyond permissible levels (e.g. fire possible).
Equipment Manual Booksize Cold-Plate Power Sections
Manual, (GH4), Edition 06.2005, 6SL3097-2AJ00-0BP2
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5-1