For the closed-loop control of drives and the implementation of basic technological tasks, for SINAMICS S120 the CU320‑2 Control Unit is available for multi-axis applications, and the CU310‑2 Control Unit is available for individual drives.

Sophisticated Motion Control tasks are best supported using the powerful SIMOTION D Control Units (D410‑2, D425‑2, D435‑2, D445‑2, D455‑2) with scaled performance.

Each of these Control Units is based on object-orientated SINAMICS S120 standard firmware, which includes all of the usual V/f control modes, scalable so that even the highest performance requirements can be satisfied.

The following are ready-to-configure drive objects (drive controls):

• The control for a line infeed:
  Infeed Control
• The control for the broad scope of rugged asynchronous (induction) motors and torque motors, including sensorless:
  Vector Control
• The control for permanent-magnet excited synchronous and servo asynchronous (induction) motors with demanding dynamic requirements:
  Servo Control

All these control versions are based on the principle of field-oriented, closed-loop vector control, with a special expansion for reluctance motors.

The most commonly used V/f control modes are stored in the "Vector control" drive object and are ideal for implementing even simple applications such as group drives with SIEMOSYN motors.