Synchronous or asynchronous, with or without a gear unit. When you want the optimum motor for your motion control application, Siemens is the right contact partner for you. Siemens offer the widest range of servomotors around the world.

Synchronous servomotors are drives in which the rotor is synchronously driven by a rotating field in the stator by means of permanent magnets attached to it. A synchronous motor rotates synchronously with the applied frequency of the rotating field.

Classic applications:

food industry
construction
automotive
packaging technology
woodworking

The principle of operation of servos

The controller is programmed for a specific operating mode and sends a signal to the frequency converter. The device supplies the electric motor with a voltage of the required frequency and magnitude. The power unit moves the actuator at a given speed and torque corresponding to the load. Upon reaching the specified position of the working body, a corresponding signal is sent from the position sensors to the controller, which stops the engine.

The principle of operation of the servo drive is identical to the automatic regulator with negative feedback. A reference signal is set, called zero, with which the signal from the position sensor is compared. If their values are equal, the servo stops; if they deviate in a negative or positive direction, voltage is applied to the motor until the working tool or actuator takes the required position.

Types of servo motors

Servo drives are distinguished by the type of motor used, the transmission mechanism, purpose and technical parameters.
As power units in devices use:

DC motors.
Asynchronous electric motors.
Synchronous motors with stator windings or permanent magnets.

With the advent of modern materials for permanent magnets, which do not lose their properties when heated and shocked, permanent magnet synchronous motors or PMSM have become the most widely used for servo drives. The main advantage of such electric machines is their small size. So, a motor of the same power of a synchronous type with rotor windings has dimensions 2 times larger than the dimensions of the PMSM.

In addition, these motors:

have high efficiency. over the entire speed range.
have the ability to maintain a given torque on the shaft, regardless of the load.
have a relatively simple design.
have low inertia.

Scope of application of servo drives

The equipment is used in various automatic devices and installations. Servo drives install:

In industrial robots and manipulators.
In lifting and packaging equipment.
In automated machines.
In highly precise actuators of systems for automatic control of technological parameters.
In automatic car transmissions.

Servo drives allow you to increase the accuracy and productivity of industrial equipment, automate production processes, and eliminate the influence of the human factor.

The Siemens 1FK7042 electric motor belongs to the simotics 1fk7 category. The presented model is a small electric motor with magnets. The motors also work with the SIMAMICS S120 converter, forming an excellent servo system. SIMOTIC 1fk7 are designed with an internal cooling system, so they do not need external fans.

The presented motors have a degree of protection IP67 on a flange with a shaft seal. 1fk70422ak711fh0 have fast dynamic response and short rotor spacing. Electric motors can operate in machine tools with high precision of motion sequences. They are produced with a transverse profile and are very easy and quick to install.

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