Siemens SINAMICS S120 Equipment Manual page 85

Smart Line Modules (5 kW and 10 kW) with
cold plate
6.1 Description
6.1
The Smart Line Module (SLM) is an unregulated line infeed/feedback unit. The SLM supplies
the Motor Module(s) with an unregulated DC voltage at the DC output. As regards the
current and voltage waveform, the SLM in infeed mode exhibits the typical characteristic of a
6-pulse diode rectifier jumper.
In feedback mode, the current waveform is square waved. Feedback can be deactivated by
means of a terminal because these Smart Lines Modules are not equipped with a DRIVE-
CLiQ connection.
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.
Smart Line Modules are suitable for direct operation in TN, IT, and TT systems.
6.2 Safety Information
6.2
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
6
6-1