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Entry type: Application example Entry ID: 23684572, Entry date: 03/21/2014
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Wobble generator for standard converters

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  • Associated product(s)

Task
For drives with periodic traversing motion, for technological reasons, the drive inverter frequency should periodically change around the selected frequency setpoint. To implement this, a periodically changing supplementary setpoint (the wobble signal) is superimposed on the frequency setpoint.

Solution
The wobble generator function has not been implemented in standard drive inverters. However, there are various ways of generating a "wobble generator".

The following example is described using the free blocks of a MICROMASTER 440.

The example describes the emulation of the wobble function using...

  • the free blocks – index term OSCILLATOR,
  • the PID controller,
  • the S7 control.

Downloads

Content of Downloads

Download

Documentation 23684572_Wobbelgenerator_DOCU_V1_1_en.pdf ( 2012 KB )
Code
(STEP 7 V5.x)
23684572_Wobbelgenerator.zip ( 381 KB )

Last Changes
Reference to SINAMICS CU240x with firmware < V4.0 removed.

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