西门子1FL2103-4AG01-1HC0 S200 200V低惯量电机

The SINAMICS Motor Control Extended (license) software option forSINAMICS G220 enables high-performance encoderless closed-loopcontrol of synchronous reluctance motors from standstill, byenabling pulse technique at very low speeds.

Main benefits

• Reduces commissioning time and effort
  (less configuration, tuning and wiring)

• Saves energy due to permanent operation in closed-loop vectorcontrol

• Saves cost for encoder, cable, installation, spares, etc.

• Allows continuous operation at near zero speeds including torquecontrol

• Improves system stability and robustness

• Improves drive dynamic performance

• Improves reliability and availability by reducing systemcomplexity

Example 1: Low speeds,robustness and energy efficiency

The following diagram shows a measured load cycle. In the low speedrange, the software option Motor Control Extended leads tosignificant reduced currents and therefore increased energyefficiency. Also, continuous operation with high loads is possiblenear zero speed.

When medium speeds are reached (in diagram: rectangle), the controlswitches from the pulse technique to standard sensorless vectorcontrol.

Example 2: Dynamicbehavior

In the following measurement, a sinusoidal signal was used todemonstrate the dynamic performance of the pulse technique. Thesinusoidal signal is reproduced perfectly with the pulse techniquewhile maintaining a relatively low current compared to the standardsensorless control near zero speed. For higher sinusoidalfrequencies, the standard control would not be able to work.

This shows perfectly that with the software option Motor ControlExtended, also high dynamic applications that need fast reactiontimes at low speeds without ramps are possible.

In which cases should theMotor Control Extended software option be used?

With synchronous reluctance motor drive

• the application requires frequent or long or even permanentoperation at very low speeds during operation cycle and/or precisetorque control from 0 rpm is required (e. g. winders, mixers,extruders).

• If the load peak at start is difficult to predict or changesdynamically and/or positioning in the application is required (e.g. logistics, cranes, hoists).

• If the drive dynamic performance is critical, requiringoperation with no or very short ramps in closed-loop (e. g. servopumps).

• If the motor works in harsh conditions or it is impossible touse an encoder (dust, heavy vibrations, mechanical restrictions)(e. g. heavy industry).

SD card