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Delta Industrial Automation

Tips & Tricks

Month

September 2011

How to control Delta AC drive using Step & Direction

There are three basic ways to control a AC drive:
– Torque control (analog signal, digital signal, embedded potentiometer, communication)
– Speed Control (analog signal, digital signal, embedded potentiometer, communication)
– Position Control (Step&Direction, Comunication)

But because the inverters accuracy (usually) is not very good, the engineers, prefer to use Steppers, or Servosystems.
So the majority of the inverter applications used to be Speed or Torque control.

But the last years, in the industry appears the need to realize good positioning with middle power and reliable cost. Servo drives are still too expensive for middle power and steppers are only for low power applications.

Because of that, the new C2000 surprise us again, with the capability to have accurate positioning using Step & Direction control.
The way to achieve the good accuracy, is because some feedback encoder located on the motor and the EMC-PG01L card, to acquire the feedback and position command at the same time.

If you wolud like to set up this system in your factory, or for your customers, check the following tutorial presentation from Mr. Robert Lo.

C2000 Step & Direction

name: den-eindhoven
Password: BuPd2175

EDS Builder

Everytime you need to insert your devices inside some Devicenet or CanOpen network, the master would need some driver.
Those drivers are called EDS files.
That EDS file is different for every drive, and it may be configured depending of the data that we want to send to the master.

Delta have many Inverter and Servodrives models able to communicate trough CANOpen or Devicenet, because of that I would like to introduce you to a software tool to create that specific EDS files for each drive and application.

EDSBuilder V1.01, just released a month ago, we’ll be able to create the EDS file compatible with any brand CANOpen or Devicenet network.
Of course, Delta already have CANOpen master to controll them, but this is another history.

Software EDS Builder V1.01

To use this software, we will need the device to communicate, and some IFD6500 (USB-RS485 converter) to communicate with the device.

And once you have it, just follow the instruction of the following tutorial  “How to create EDS via EDSBuilder”

name: den-eindhoven
Password: BuPd2175

Enjoy!

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