Delta Industrial Automation

Tips & Tricks



Easy control of Delta VFD drives

This week we would like to show you two new function blocks (FB) that we have developed to make even easier to use Delta Industrial Automation products.

Usually we need to control several AC drives from a single Master PLC and Modbus communication is a cheap and helpful way to get it.

In order to reduce programming and commissioning time we have developed two FB:

  • COM2_VFDLINK: Configures the communication parameters (baudrate, number of bits, parity,…) that all the nodes on the network have to share and informs about the communication state of each node.
  • DELTA_VFD: Controls each one of the slaves VFD, we can Start/Stop, Forward/Reverse, frequency command and reset faults. On the other side, the FB informs us about the status of the drive, alarm code, output frequency and output current.

Below you’ll find the FB library ready to be imported in your ISPSoft and a little pdf explaining the I/O of each FB, enjoy it!

VFDLINK FB explanation



Succsessful Application: Galvanizing production line on metal industry

Another Delta successful application!


This time, the problem comes because of the big number of drives needed for the application.
Up to 68 Slaves to be controlled by a PLC, and even in Modus the theoretic limit is 128 nodes, the ones who are really in the field should know than more than 32 nodes means big troubles.

According to this, we recommend to our customer to use CANOpen in two different CANOpen Networks of 34 slaves each.
See the below picture with the network configuration


Just let you know that it wasn’t easy, but is working, thanks for the great technicians of our Turkish distributor FastLTD.

Feel free to download the presentation with full explanation of the application.
CanOpen_ Galvanizing production line on metal industry

Succesful Application: Electric Concrete Truck

This is a new application for our Netherlands distributor Innomotion.
The idea is to make a concrete truck more economic and silent.

Normally the drum is turned with diesel power (hydraulics) from the truck.
Now the drum is loaded at the factory on electric power (cable) and on the road a small generator is supplying just enough power for slow turning and unloading of the truck.

It will save fuel but most of all were possible the truck can unload on the cable so in the innercities there is less pollution on the building site and less noise.

Inside the big cabinet there is a C2000 45KW delta PLC and HMI.
Nice eco-project Innomotion!
Dank u wel

Successful Aplication: C2000 for Injection Molding Machine

Injection Molding machines is a quite common application, because of that, Delta develop several solution depending on the different type of injection moldign machine.


In frirst place, we develop specific solution for this application called HES
This system provides precise pressure and flow controls, with our Delta key point in power: The energy savings.
In this moments, this product is under field test in Asia, and really soon on the rest of the world!
But If you want to take a look over our technology, check the below presentation

HES Techology

But for standard systems we got another solution.
Probably many of you already hear about our new C2000 Delta Inverter series, and possibly many of you already work with it in some application.
So this is one of the multiple ways to squeeze the capabilities of this versatile product.

Hybrid System based on C2000

The keypoint in this system is use the internal PLC and the PG card (encoder feedback) of C2000 to create a standalone control system able to adjust itself without any extra controller.
On the below links you will find the parameter configuration and PLC program to beable to test by yourselves.

Parameter configuration & PLC program

And to have full explanation of the application, don´t hesitate to download the following presentation.

C2000 for Injection Molding Machine

Don´t hesitate to test with your Injection molding machines customers!
And let us know your results

Successful Application: Pitch Driving on Wind Power Generation

Another successful application, in this case from our global service centre in China.
The application consist in move the inclination of the blades of the big power generation windmills, to get the maximum power from the wind.
And at the same time, when the wind is too strong, protect the windmill situating the blades in less friction position against the win direction.

You can take a look on the complete explanation of the project in the following pdf
The Application of Delta C2000 in Pitch Driving of Wind Power Generation

Just remind you that Delta is a huge multinational, and a part from Industrial Automation BU we already have the Wind Energy Business Unit able to provide the full system for anyone interested.
Delta WindEnergy

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

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