Arrangement Of Components And Equipment; General; Drive Line-Up - Siemens SINAMICS S120 Equipment Manual

7.5

Arrangement of components and equipment

7.5.1

General

The arrangement of the components in the cabinet takes the following into account:
• Space requirements
• Cable routing
• Air conditioning
• EMC
7.5.2

Drive line-up

The components must be arranged primarily in accordance with their function and the
current capacity of the DC link.
The following criteria must be taken into account when the drive line-up for devices in
chassis format is designed:
• Depending on the required Motor Modules, the Line Module must be positioned centrally.
• It is not permissible to install more than one type of Line Module, i.e. a mixture of different
Line Module types, in a single drive line-up.
• The Motor Modules must be positioned to the left or right of the Line Module with
decreasing rated currents (i.e. the Motor Module with the highest rated current is
positioned next to the Line Module on the left or right, while the Motor Module with the
lowest rated current is at the end). When laying the cables or busbar for the DC link, you
must ensure that the cable/busbar is compatible with the current-carrying capacity of all
the connected Motor Modules.
• The drive line-ups must be configured in such a way that all the power cables for motor
supply cables and power supply cables that should preferably be shielded do not exceed
the lengths specified in Table 7-3.
Fig. 7-7
All the components in the drive line-up should preferably be installed on a conductive
mounting surface to minimize the impedance between the component and the mounting
surface. If the mounting surface comprises more than one mounting plate, these must be
connected conductively over the greatest possible surface area. If the components are
installed individually, they must be grounded individually too.
Chassis Power Units Liquid Cooled
SINAMICS S120 Equipment Manual, Edition 12/2007, 6SL3097-2AM00-0BP4
Motor Motor
Module Module
Low power High power
Power-based arrangement of chassis Motor Modules
Example of a drive line-up
7.5 Arrangement of components and equipment
DC connection
Power supply Line Module
Cabinet Design and EMC
Motor Motor
Module Module
High power
Motor
Module
Low power
7-13