Air-Cooled Sinamics S120 Cabinet Modules; General Configuring Process - Siemens SINAMICS G130 Engineering Manual

Standardized coolant piping in liquid-cooled units
In addition to the standardized DC busbar near the top of the Cabinet Modules, liquid-cooled SINAMICS S120
Cabinet Modules are also equipped with standardized coolant piping. This piping is made of corrosion-resistant
plastic (PP-R), has an inner diameter of around 60 mm, an outer diameter of 75 mm and is mounted near the bottom
of the Cabinet Modules. EPDM hoses are used to connect the piping to the liquid-cooled components inside the
Cabinet Modules. Quick-coupling connectors are optionally available for connecting the hoses.
Standardized coolant pipingfor liquid-cooled S120 Cabinet Modules

7.2 Air-cooled SINAMICS S120 Cabinet Modules

7.2.1 General configuring process

The first step in engineering a drive system is to determine the performance required of the individual motors in the
drive line-up. The components are selected according to physical interdependencies and the selection process is
usually carried out in the following sequence of steps:
Step Description of the engineering sequence for air-cooled S120 Cabinet Modules
1. Clarify the type of drive and Infeed, and the line supply voltage
· Basic Line Module
· Smart Line Module
·
Active Line Module
2. Define the supplementary conditions and integration into an automation system
3. Define the load, calculate the maximum load torque, select the motor
4. Select the SINAMICS S120 Motor Module
5. Repeat steps 3 and 4 for any further drives
6. Calculate the required DC link power, taking the simultaneity factor into account, and select the SINAMICS S120 Line
Module and the DC busbar.
7. If the DC link power required is calculated to be such that a parallel connection of Infeed Modules is needed to provide the
necessary Infeed power, then the correct Infeed Modules for the parallel connection must be selected. Only Infeed
Modules with the same output power rating may be connected in parallel. Note derating data!
8. Select the Line Connection Modules based on the assignment table (see section "Line Connection Modules")
9. Determine the line-side power options (main circuit breaker, fuses, line reactors, etc.)
10. Check the precharging of the DC link by calculating the DC link capacitance
11. Select further system components
12. Calculate the required current for the electronics with 24V DC (please see technical data for the Cabinet Modules) as well
as for optional components.
13. Calculate the required current for the components with 230 V AC (please see technical data for the Cabinet Modules).
14. Calculate the required current for the fans with 380 V to 480V AC resp. 500 V to 690 V AC (please see technical data for
the Cabinet Modules)
15. Determine the power supplies for auxiliary power requirements (external or option K70 or K76 or Auxiliary Power Supply
Module)
16. Determine the required control performance, select the SINAMICS S120 Control Unit and the Compact Flash Card, define
the component cabeling (DRIVE-CLiQ topology)
Select the components for connections.
Select the DRIVE-CLiQ cables, including those which have to be installed and connected on site. Select the PROFIBUS
17. cables, if communication is established by means of PROFIBUS and several CU320-2 DP Control Units have to be
connected to one another. Select the PROFINET cables, if several CU320-2 PN Control Units have to be connected.
Alternatively selection of order-specific integration engineering (please see Catalog D21.3)
Determine the sequence of components in the drive line-up
18.
Split the drive line-up into individual transport units
19.
SINAMICS S120 Cabinet Modules
Engineering Information
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