Overview counting, measuring and motion control with PCD's

The aim of this page is to give an overview about the motion control applications with our PLC's, for the details there are links to the relevant product pages.

Tables in order of the complexity:

Fast counting, position detection

• General

   

   

  Products: Classic/PG5

   

   

   

  Products: xx7/Step7

• Due to the input filter of digital input cards and the cycle time of the user program, it is not possible to count fast with standard inputs. To fill this gap we offer interrupt inputs and dedicated I/O modules. For OEM applications we can offer attractive customized solutions.

  Interrupt inputs on PCD2.M120, PCD2.M150, PCD2.M170, PCD4.M170 (1kHz unidirectional max.)

  Counter modules PCD2.H100 (simple, 20kHz max.), PCD2.H110 (versatile, 100kHz max.), PCD4.H120 (versatile, 166kHz max.)

  SSI module PCD2.H150

  Interrupt inputs on PCD2.M157, PCD2.M177 (5kHz bidirectional or unidirectional max.)

  Counter modules PCD2.H100 (simple, 20kHz max.), PCD2.H110 (versatile, 100kHz max.)

  SSI module PCD2.H150

Simple position / speed control

• General

    

  Products: Classic/PG5

  Products: xx7/Step 7

  Restrictions

• When the control speed and precision is not important, counter modules can be combined with standard analogue outputs to control the drive to get a cheap solution. The regulation is done by the user program

  Counting modules as mentioned in the upper table, standard analogue outputs

  Counting modules as mentioned in the upper table, standard analogue outputs

  Due to the cycle time of the user program, the control loop is rather slow 

Single or multiple axis position / speed control without synchronisation

• General

   

  Products: Classic/PG5

   

  Products: xx7/Step7

• To control stepper motors or servo drives dedicated I/O modules are available. The regulation is done in the modules, the user program is used to configure and control the module by means of function blocks

  Stepper motor module PCD2.H210, PCD4.H2x0, PCD4.H225 servo drive module PCD2.H31x, PCD2.H32x, PCD4.H3xx

  Stepper motor module PCD2.H210, servo drive module PCD2.H31x, PCD2.H32x

Multiple axis control with interpolation/gearing

• General

   

   

  Products: Classic/PG5

  Products: xx7/Step7

• To get a smooth interpolation or gearing, powerful and versatile modules with fast control loops are required. The regulation is done in the modules, the user program is used to configure and control the module by means of function blocks

  PCD2.H32x, PCD4.H4xx

  PCD2.H32x

Serial communication with drives

• General

   

   

  Products: Classic/PG5

   

  Products:xx7/Step7

• Instead of using dedicated I/O modules it is possible to use intelligent drives and control them via a serial link. As every drive has another interface, a user program has to be created to allow the PCD to communicate with the drive

  All necessary instructions are available to the programmer, profound instruction list knowledge is required to create a driver

  All necessary instructions are available to the programmer, profound instruction list knowledge is required to create a driver. Step7 examples are available on request