SINAMICS S120 - System architecture

SINAMICS S120 - AC-Drives for single-axis applications

SINAMICS S120 AC/AC-Drives - Description

For single-axis drives, the line infeed and the power supply of the motor are combined in one device – the Power Module. For single-axis applications, the closed-loop drive control is handled by a special Control Unit (e.g. CU310-2) mounted on the Power Module; for multi-axis applications, using a Control Unit (e.g. CU 320-2) coupled via DRIVE-CLiQ. In the latter case, instead of the Control Unit, a CU adapter is mounted on the Power Module.


Control Unit CU310-2 Central control intelligence with interface to the control System:

AC-Drives are each equipped with a CU310-2 Control Unit for coupling to a higher-level control. It offers functions from a basic speed controller up to extensive positioning functions. CU310-2 DP with PROFIBUS DP connection or CU310-2 PN with integrated PROFINET interface are available.

Drive-related inputs/outputs in the Control Unit can be simply logically combined using BICO technology. As a consequence, the highest possible degree of decoupling between the drive and higherlevel control system can be achieved. For AC-Drives, when required, an additional encoder and drive-related I/O can be connected via DRIVE-CLiQ

SINAMICS S120 Control Unit CU310-2 Central control intelligence with interface to the control System

Control Unit Adapter CUA31/32 for multi-axis applications with SINAMICS S120 AC-Drive

The drive is connected to a multi-axis Control Unit, e.g. CU320-2, using the CU adapter CUA31 via the DRIVE-CLiQ interface. This Control Unit then handles the drive functions for the AC-Drive. In this configuration, SINAMICS S120 AC-Drives can also be used in mixed operation with SINAMICS S120 multi-axis devices. This facilitates maximum flexibility when using SINAMICS S120 devices. In comparison to the CUA31, the CUA32 also has an integrated HTL/TTL encoder interface to connect an external encoder.

SINAMICS S120 Control Unit Adapter CUA31/32 for multi-axis applications with SINAMICS S120 AC-Drive

SINAMICS S120 AC/AC-Drives - a brief Summary of its Strengths

  • An independent single-motor SINAMICS S120 AC-Drive comprises a Control Unit and Power Module

  • Alternatively, a Power Module can be integrated into a multi-axis lineup via a CU Adapter

  • Optional I/O modules to connect encoders and drive-related I/Os

  • Power Modules are available in the Blocksize and Chassis formats


SINAMICS S120 AC/AC-Drives - Technical Data

Ratings depend on design and type of the motion control drives

Voltage and power ranges:

0,12 - 90 kW 1AC 230 V, 3AC 380 - 480 V

Control principle:

V/f open-loop control, Vector control with/without Encoder, Servo control with/without encoder


SINAMICS S120 AC/AC-Drives - Typical Uses

The single-axis drives are suitable for applications in all sectors, for example travel drives, centrifuges, elevators and extruders as well as for mixers and kneaders. With the integrated technology functions positioning tasks in automatic assembly machines and handling systems can be reliably tackled by SINAMICS S120 AC-Drives

Single-axis SINAMICS S120 AC-Drives are also the ideal solution for multi-axis applications, where the drive axes are located remotely from each other. The same is true for modular machine concepts, which are being increasingly implemented in the packaging and woodworking industry.