西门子1FL2102-4AG00-1HC0 200V低惯量型电机

概述

Motor Control Functions
Motor Control Functions Control philosophy
Drives	SINAMICS S Multi-axis
	SINAMICS G			SINAMICS S Single-axis
Control mode	VectorControl			ServoControl
	Standard DriveControl	DynamicDrive Control	ExpertMode
	Pumps, fans and compressors with flow characteristic Blasting technology Mills, mixers, kneaders, crushers, agitators Horizontal conveyor technology Basic spindles	Demanding applications with high utilzation of themotor/converter Pumps and compressors with displacement machines Extruders Centrifuges Vertical conveyor technology	All applications All setting options are available	Special closed-loop control for highest dynamics servo motorapplications Especially important for machine tool applications
Required data	Rated speed and rated current	Rated speed, rated current and rated power	Depending on commissioning routine	Depending on commissioning routine
Focus	Easy & fast commissioning for the untrained user	Simplified commissioning for most applications	Maximum performance for the expert user	Maximum performance for the expert user

Motor control modes

The control methods are the core of the entire converter firmware.They are responsible for optimum movement of the connected motorand the attached machines.

The better the control functions, the faster, better and moresmoothly the machine operates, thereby significantly enhancing thequality of the production output.

Open loop control

The V/f open-loop control characteristic is the simplest way tocontrol an induction motor.

Several different characteristics, e. g. linear or parabolic,can be configured.

In addition, basic functions like slip compensation, voltage boostor resonance damping are supported.

Universal closed-loop control (Vector Control)

The vector control emulates the motor as precisely as possible toobtain the best results regarding control precision and controlquality.

For most applications and motors, the closed-loop vector control isthe perfect choice. It is optimized for both Siemens and 3rd partymotors.

Unknown motors – regardless of the technology (induction,synchronous reluctance, permanent magnet synchronous) – can beidentified and commissioned easily.

The vector control is characterized by features like

• Best speed accuracy

• Best speed ripple

• Best torque accuracy

• Best torque ripple

• Optimized for control with or without encoder

Closed-loop control for highest dynamics (Servo Control)

In the servo control mode, the connected motor is emulated in avector model based on its equivalent circuit diagram data.

Consequently, the servo control constitutes a field-orientedcontrol. In contrast to vector control, the vector model isoptimized according to other criteria in servo control.

In favor of achieving a high dynamic performance, a smalldeterioration in the control accuracy and control quality isaccepted.

Special features of the servo control include

• Maximum computing speed

• Shortest sampling times

• Maximum dynamic performance

• High output frequencies

• Preferably used with permanent magnet synchronous motors withencoder for the appropriate dynamic performance

General control loop structures

Both servo and vector control share some common used control-loopstructures:

• Extended brake control. It allows complex brake controls, suchas for motor holding brakes and service brakes.

• Setpoint channel. It is the link between the setpoint source andthe motor control. The converter has a special feature thatsupports simultaneous input of two setpoints. Generation andsubsequent modification of the total setpoint (influencing thedirection, skip frequency, up/down ramp) take place in the setpointchannel.

• Command sources. Different sources of command usually resultfrom the requirements to operate a drive from different places(on-site/remote), in different situations (standard/emergency mode)and/or different operating. The BICO binector connector technologyallows SINAMICS to configure and combine the command and setpointsources completely individually.

• Limiters or limits are used to constrain input and/or outputvariables as appropriate to the connected machine; this means thatnot all positioning variables are used over their full range butare limited judiciously to enhance the safety and quality of theproduction process.

• Pulse frequency & modulation.
  Several different pulse frequencies possible to adjust the drive tothe application including asynchronous pulse frequencies tominimize derating and mechanical resonances.
  In addition, wobbling is available to generate a more pleasantacoustic experience.

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