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sunit

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sunit last won the day on August 19 2015

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About sunit

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  • Birthday 10/05/1982

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    PLC AND SERVO PROGRAMMER

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  1. Transferring autocad coordinates to excel file . Importing that excel to data table.
  2. I REPLACED A CNC CONTROLLER WITH V130-J-TR34 FOR CONTROLLING X,Y TABLE OF AUTO PUNCHING MACHINE FOR SHEET METAL. FEATURES 1. AUTO , SEMI AUTO , MANUAL MODE 2. SYNCHRONIZING THE X,Y TABLE WITH THE PRESS MACHINE. 3. SHEET METAL SIZE 2M x 2M UPTO 1000 HOLES POSITION CAN BE STORED 4. AUTOCAD FILE CAN BE TRANSFERRED TO PLC
  3. Replaced one more CNC controller with V130-J-TR34 It was a Auto Punching Machine for metal sheets. The CNC controller of the X,Y table failed. The X,Y table had two servo motors. I used the V130-J-TR34 for this application. Customer wanted to transfer the AutoCad drawing directly to the PLC. So i used some tools from unitronics site to convert autocad file to excel file and then transferring the excel to PLC. The idea worked and now the machine is running.
  4. Hi all friends Till now i have used almost 250 to 300 unitronics PLC which consist of V130, V350, V570, V1040. The best in this i feel is the V130, V350. I have got failure in only 3-5 PLC till now. The best thing about unitronics is its very reliable and has a very strong ladder development software which is free for users. It also has other set of softwares which are very useful for project development. I can easily make my own software in VB or VB.net and connect to my unitronics plc for doing different type of applications. There is a big scope of doing adventurous development in unitronics. The info mode is the best feature in the unitonics plc , i can do trouble shooting in my plc sitting in my office and talking to my customer on phone. The SD card is also one of the best feature in this segment. S7-200 , AB and other big brands do not have such features in this segment.
  5. Aluminium extrusion Machine My customer had a complete automatic aluminium extrusion machine which had a S7-300 in main extrusion machine and two S7-200 PLC in conveyor system. The conveyor system has a trolley which travels 40m in both direction in high speed. There were some hydrollic system on the trolley which use to clamp the aluminium profile and pull it out of the extrusion machine. The trolley use to automatically synchronized with the speed of the extrusion. There was one more S7-200 plc in trolley system which use to control the hydrolic system in the trolley. Both the PLC in the trolley as well as the main panel were connected to each other through a bus bar system to exchange communication signals while the trolley was moving. Trolley use to have frequent breakdowns due to communication error between the plc. I was given this task to make this system more durable. The first thing i did is replaced both the S7-200 plc with V130 PLC. In the trolley we installed the V130-j-TR20 and in main panel we installed V130-J-TR34 with IO_AI4_AO2. Then we developed a new program and synchronized every thing with the extrusion machine as it was before. V130-J-TR20 was in the trolley and V130-J-TR34 was in main panel and they need to be communicated with each other so that all trolley function should work. The previous system was bus bar system and was causing frequent problems, so i decided to go for a wireless communication system. I took two simple TP-link routers and installed one in trolley with v130-tr20 and other in main panel with v130-tr34. Then i setup a modbus ip link between them and exchanged all my signal between them. See the link of the video below https://www.facebook.com/shriramauto/videos/927412653974856/ https://www.facebook.com/shriramauto/videos/927412367308218/ https://www.facebook.com/shriramauto/photos/pcb.927396570643131/927395883976533/?type=3 https://www.facebook.com/shriramauto/photos/pcb.927396570643131/927395853976536/?type=3 https://www.facebook.com/shriramauto/photos/pcb.927396570643131/927395827309872/?type=3 Now the system is working perfectly and once again unitronics proves that it is the best and most user friendly PLC.
  6. Yes but we will require PWM outputs in order to control the RPM of the motors. Inputs are not required. My handheld V350 will send communication messages to the v130 in the plane with the help of xbee communication module in order to control the RPM of motors.
  7. I want to use a V130 plc as a reciver in a RC plane. Is it posible to power the plc on a 12v battery 1. I will be using a v130 cpu and IO board 2. 4 BLDC motors with ESC 3. xbee moudle for wireless communication. 4. 12v battery Please suggest me if this is posible.
  8. A Samba 70 has a USB programming port and one optional port for Ethernet or RS232/485. I want to install a ethernet port but at the same time i want to use the USB programming port for MODBUS RTU to communicate with a remote IO by using a USB to RS485 converter, Is this posible?
  9. For such application you actually require a hardware input interrupt subroutine, This type of subroutine trigers on every rising or falling edge of the input. In unitronics we don't have such subroutine. You can use a read immediate input function but action will be taken as per scan time of PLC. Minimum time will be 1.25mS. 2nd profile is posible because the speed is very slow before stoping, But in 1st profile there may be some errors as speed is very high and it may miss the stop plus because it will be scaned every 1.25 mS. I had tried using a V130-J-TR20 for labeling application but i had problems while stoping plus.
  10. Can you explain your appication more in detail
  11. Hi I replaced the CNC controller for WIDIA single spindle gun drilling machine with our vision 430-TR34 and used the PTO function for positioning of the drill deapth. Earlier it was done with a CNC controller which failed. The customer was having no replacement for it from the OEM because the a machine was old. So then i adviced my clinet to change the full controls of the machine with new PLC the vision 430-TR34 and used the PTO function for position controll. Please see the link below for the photos of the project https://www.facebook.com/shriramauto
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