Belajar PLC dan SCADA

Just another Blog about Programmable Logic Controller & SCADA.

PLC Programming Tutorial for Beginners

Written by Kang Abu on 11:45 AM

In this lesson we will learn how to write a PLC program using an "S7 300” PLC and “STEP 7” software.
We have two pumps which are being used to transfer two separate liquids into this tank.Inside the tank there are two level switches installed in the lower and upper parts of the tank respectively.

There is also an electrically powered mixer inside the tank which starts working for a defined period of time, mixing the two liquids together after the tank has filled.
We also have a discharge valve in the bottom of the tank which controls the draining of the liquid from the tank.
When the level of the liquid drops to the level of the switch's position the contact closes, sending a 24 volt DC signal to the PLC input.

We want to write the program so that when the level of the liquid reaches this minimum, the pumps will be activated and begin filling the tank with the liquids. 
The pumps continue filling the tank until the level reaches its maximum at the higher level switch. When this happens the open contacts in the switch will be closed and another 24 volt signal will be sent to the PLC input telling us that the tank is full. 

When this signal has been sent, first the pumps should shut down so that no more liquid enters the tank, and then this mixer should be turned on.

We want the mixer to operate for seven seconds, mixing the liquids that have been pumped into the tank.
After seven seconds the mixer should automatically shut down and this discharge valve should open.
With the valve open the liquid will be discharged from the tank and transferred to another location within the factory to be processed.

When the level of the liquid in the tank drops to the minimum set level of the lower switch, the switch contacts will close again thus starting a repeat of the cycle!






This is the third video of “star-delta starter PLC program and wiring video series”. In this video you’re going to learn the wiring of star-delta starter. 
The basic concept of star-delta starter is to first run the motor in the star connection for a few seconds to reduce the start current. Then when the motor has gained sufficient speed, change the winding connections to delta. 

PLC Training_Star-Delta Starter PLC program and Wiring_ Part 1:
https://youtu.be/skcaCBxyNSk

PLC Training_ Star-Delta Starter PLC Program and Wiring_Part 2:
http://youtu.be/FOKSkCR6JQY

PLC Training_ Star-Delta Starter PLC Program and Wiring_Part 3:
https://youtu.be/aEkQuqEdlVA

PLC Training_ Star-Delta Starter PLC Program and Wiring_Part 4:
https://youtu.be/SOZwFUzTQsU

PLC Training_ Star-Delta Starter PLC Program and Wiring_Part 5:
https://youtu.be/qA3Yg5CS-F8

PLC Training_ Star-Delta Starter PLC Program and Wiring_Part 6:
https://youtu.be/J9RMP8l3vDA

PLC Training_ Star-Delta Starter PLC Program and Wiring_Part 7:
https://youtu.be/0q-CDJinDVw

PLC Training_ Star-Delta Starter PLC Program and Wiring_Part 8:
https://youtu.be/nqlEK_ERTxk

PLC Training_ Star-Delta Starter PLC Program and Wiring_Part 9:
https://youtu.be/fiPSMyFIiFY


Related Posts by Categories



Widget by Hoctro | Jack Book
Related Posts with Thumbnails

Our Advertising

Bantuan Pencarian

Jika anda seorang pemula dan tertarik untuk belajar PLC silahkan cek artikel di arsip artikel atau gunakan bantuan pencarian artikel di bawah ini. TQ Bro..

Email Subscribe

Dapatkan informasi dan artikel yang update dari situs ini. Jika anda barminat silahkan masukan email address anda di bawah ini. Terimakasih! (Please write email to subscribe our news).

Enter your email address:

Delivered by FeedBurner

Disclaimer (Privacy Policy)

No PDF Files stored in this site. http://belajarplc.co.nr are not responsible if you download and distribute files or links. Noted that http://belajarplc.co.nr not related in any way with upload files with a copyright material that available for download. Just we collects the information using google search and other search engines links hosted or posted by other website. The link Free Book Download available here are for EDUCATIONAL PURPOSES ONLY... and its recommended to buy the products from the original Owner or Publisher.

For Detail Please Click Here!

Jika anda mempunyai artikel sepurtar dunia automation (PLC dan SCADA) dan ingin sharing buat teman-teman blogger silahkan kirim ke duniaengineering@gmail.com
Terimakasih.

Jika anda menginginkan semua berita yang ada disitus dan links yang ada di situs ini menjadi bagian dari situs yang anda punyai silahkan masukan address ini (copy & paste):
http://feeds2.feedburner.com/belajarplcdanscadaok di fungsi RSS Feeder situs anda.