Auxiliary Power Supply System; General Information - Siemens SINAMICS S120 Manual

Electrical installation
4.4 Connections
CAUTION
The screws must only be loosened rather than removed because otherwise the nuts could
fall into the device.
The torque (50 Nm) must be observed to avoid excessive heating of the terminal contacts
during operation.
All jumpers of the DC busbar must always be connected in busbar systems.
For each cabinet row installed, you must mount one side panel on the right (option M26)
and one on the left (option M27).
Before mounting the side panels on an installed cabinet row, you must remove any jumpers
present in the DC busbars of the cabinet on the right.
Note
In the case of transport units with standard integrated DC busbars within the cabinet group,
you only need to connect the ends of the busbars of the transport units.
4.4.4

Auxiliary power supply system

4.4.4.1

General information

Availability
To facilitate the auxiliary voltage supply to S120 Cabinet Modules, the individual modules are
fitted with a special, standardized auxiliary voltage supply system. This system is delivered
pre-installed. The cabling required from the auxiliary power module into the relevant Cabinet
Module are factory-installed.
In the following S120 Cabinet Modules, two further voltage taps are available to the
customer on the auxiliary power module for each voltage level:
● Smart Line Modules
● Active Line Modules
● Booksize Base Cabinets
● Chassis format Motor Modules
● Central Braking Modules
Description
The auxiliary power supply system installed in the Cabinet Module is used to distribute the
voltages provided by an auxiliary power supply.
68
Cabinet Modules
Manual, (GH5), 05/2010, A5E03263538A