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VFD

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

VFDLINK FB

VFDLink_example

Successful Application: Top cleaner greenhouse deck

Another successful application from our parters in Netherlands Innomotion.

On below video new top cleaner unit for cleaning the glass roofs of greenhouses, and since last year fully equipped with delta inverters

http://www.dailymotion.com/video/xpbwg1_van-der-waay-machinebouw-top-cleaner-greenhouse-deck-cleaner-village-farms_tech

For the cleaning brushes they use VFD-L, And to drive the car over the roof our VFD-E.
And finally to control all the sequence a simple SS2 makes all the job.

Congratulations Innomotion!

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 Application – Profibus communication with VFD-EL & CME-PD01

It’s well known that Profibus is quite extended within industrial enviroment.
But this doesn’t mean that you need to use Siemens inverter when the fieldbus network is already setup!

We know that Simatic Step7 is not a piece of cake…
So, on the tutorial below you will find step by step, how to manage Simatic Step7 to be able to add Delta Inverter VFD-EL (with Profibus card CMA-PD01) into some profibus network.

Probably you will need GDS file.
GSD file (For VFD-B, VFD-F, VFD-M, VFD-S, VFD-L, VFD-E)
GSD for CME-PD01 GSD

And the tutorial
Delta – Siemens comunication VFD-EL via CME-PD01 (Profibus)

Let us know If this information is important for you, and we’ll post the same for new inverters like C2000 or CP200.
Ah! and remeber our profibus slave module in case you need to add cost effective remote I/O

Announcement: WPLSoft v2.30

Be ready programmers, new update for the WPLSoft!

Many new stuff added on that new version, program password protection (on the PC), Float type on the edit register memory, new SE added on the PLC list, and many other thinks that you can check on the announcement below
Technical announement WPLSoft v2.30

Warning! the DVP format has change! so the previous WPLSoft can not open the programs saved on WPLSoft 2.30.

As always the software is for free, and you can download it on Delta website or our FTP site.
Delta Website Delta PLC Software
FTP Site Delta PLC Software
name: den-eindhoven
Password: BuPd2175

Just for your information, be aware that other Delta software has been update this month. VFDSoftv1.46 and DCISoftv1.08.
And pretty soon ISPSoft will be update too.

Don´t hesitate to let us know your thoughts

PLC Link (PLC to VFD)

PLC-Link is not only a tool to exchange data between PLC’s.
With PLC-link you can also share memory space with a servo, inverter, temperature controller, etc…
In this case I would show you the procedure to do it with VFD-E series drive.

The advantage of this method agains the “sending frames one” is that you don’t need to program and trigger one frame for every value read or write to the slave.
With this method, you only have to configurate the communication, and you will have any Slave value in your master buffers.
follow the next steps:

1. Hardware
use exactly the same advices as the PLC-VFD communication post.

2. Decide the protocol to be used.
And write it on a post it in front of you. In this case we use protocol Modbus ASCII, 9600 baud,7,Even,1

3. Inverter configuration (almost same as PLC-VFD communcation post)
The important think on this step is get ready the inverter to receive orders from RS485 interface, so depending the inverter the values are going to be different. In this example I use VFD-E.
Check the parameters If you are going to use another inverter.

2.00 = 3
Source of First Master Frequency Command
3: RS-485 (RJ-45) communication

2.01 = 3
Source of First Operation Command
3: RS-485 (RJ-45) communication. Keypad STOP/RESET enabled.

9.00 = 2
Communication Address
in my example 2

9.01 = 1
Transmission Speed
3: Baud rate 9600bps

9.04 = 1
Communication Protocol
0: 7,E,1 (Modbus, ASCII)

4. PLC Software
In this case I recommend to have the manual opened, because basically is a matter to configure the PLC-Link special registers properly.

D1399:ID address of the first slave
D1434:Number of consecutive registers to be Read (by the master)
D1355:First register direction of the slave to be Read (H2102 = Frequency command)
D1450: Number of consecutive registers to be Write (by the master)
D1415: First register direction of the slave to be Write (H2001 = Frequency command)
D1480:Readed values Master Buffer (Slave 1)
D1496:Writed values Master Buffer (Slave 1)

To find what register I need to edit in each case, look in the manual for any of those registers, and look for the proper one.

And Check the following program and test it.
PLC Link COM2 (PLC – VFD)

I’m pretty sure that system will save you a lot of time and efforts.

PLC – VFD Comunication

Another communication post.

This time I’ll give you the tools to control some Delta Inverter with Delta PLC trough RS-485.
I’ll made this tutorial step by step, starting as always from the hardware.

1. Hardware
The pinout in this case is really simple, the middle pins of the RJ11 (or RJ45) are the positive and negative of the RS485 communication. So I recommend to buy some RJ01 from Delta inverter range, or some telephone wiring, cut one side and use the flying leads to connect to the PLC.

2. Decide the protocol to be used.
And remember to write the protocol in a paper avoids future problems!
In this case I’m going to use the next (7, N, 2, 38400, ASCII)

3. Configuration of the Inverter.
The important think on this step is get ready the inverter to receive orders from RS485 interface, so depending the inverter the values are going to be different. In this example I use VFD-E.
Check the parameters If you are going to use another inverter.

2.00 = 3
Source of First Master Frequency Command
3: RS-485 (RJ-45) communication

2.01 = 3
Source of First Operation Command
3: RS-485 (RJ-45) communication. Keypad STOP/RESET enabled.

9.00 = 2
Communication Address
in my example 2

9.01 = 3
Transmission Speed
3: Baud rate 38400bps (max speed for some inverters)

9.04 = 0
Communication Protocol
0: 7,N,2 (Modbus, ASCII)

4. PLC Software (send).
To send some frame trough the PLC RS485 port, we’re going to use the instruction MODWR (API 101) and the special mark M1122 to trigger the communication.

The MODWR has the next composition:
MODWR S1 S2 N
S1 = Device Address of the slave (2 as we configure on steps 3, 4 and 5)
S2 = Data Address of the slave (H2001 to change frequency)
N = Data to be written (just 1 word)

You can found the inverter slave data address on the inverter manual or in following file
Inverter Data Address for VFD-E.

5. PLC Software (read).
To read some frame trough PLC RS485 port, for example the Frequency Output. We’re going to use the instruction MODRD (API 100) and again the special mark M1122 to trigger the communication.
But this time, we will use the special registers D1050 to D1055, where we could found the data received.

The MODRD has the next composition:
MODWR S1 S2 N
S1 = Device Address of the slave (2 as we configure on steps 3, 4 and 5)
S2 = Data Address of the slave (H2102 to read output frequency)
N = Data to be read (3 words)

You can download the PLC program examples on the next link.
Read-Write to Inverter.rar

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