Siemens SINAMICS S120 Equipment Manual page 270

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7.2 DC link supply adapter
Caution
It is only permissible to establish connections to the DC link using the adapters that Siemens
has recommended (DC link adapter and DC link infeed adapter).
Danger
Components for which the recesses for the DC link supply adapter have been removed must
no longer be operated without them. If components need to be operated without neither the
recess nor DC link supply adapter, the DC link cover must be replaced.
Caution
The DC link discharge voltage hazard warning on the modules on which the adapter is
installed must be in the local language.
A set of labels in 16 languages is available under Order No.: 6SL3166-3AB00-0AAx.
Caution
The screw tightening torque (1.8 Nm, tolerance: +30%) for securing components to the
module-side DC link busbar must be checked before commissioning to ensure that it is
correct. After transportation, the screws must be tightened.
Danger
If a 50 mm wide module or if a DC link component with the appropriate width (e.g. Braking
Module, Control Supply Module, Voltage Clamping Module) is located at the lefthand end of
the drive line-up, then the DC link bridge including all of the screws must be removed. It is
not permissible to insert the screws without a DC link bridge.
For all other power units and DC link components (e.g. Capacitor Module) that are wider
than 50 mm, it is not permissible to remove the DC link bridge.
If this is not carefully observed, this can result in damage and accidents.
Caution
To ensure safe electrical separation, the 24 V supply cables and those for the DC link
connection cables must be physically separated (> 100 mm), or the 24 V cables must be
doubly insulated (e.g. light plastic-sheathed cable).
7-18
Equipment Manual for Booksize Power Units
Equipment Manual, (GH2), 03/2006 Edition, 6SL3097-2AC00-0BP3