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Found 11 results

  1. Tracking,

    ABlearner posted a topic in Allen Bradley / Rockwell Automation

    Hello Guys! I would like to ask your help. I have a conveyor. At the begining of the conveyor i have a sensor which is declare wether a product is good or not. After that 5 meters i have to store out the bad product. In the exact place i have to stop the cv and store out. I have an encoder on the cv so i can calculate the correct position. The only problem is i have to write a tracking because i cant know when will the next wrong product coming. I could make some calculation making couple hundred rungs but its not sounds workable. Thanks ahead for any help.
  2. Hello Guys, I have a Mitsubishi A8000 series vfd with an encoder card and also encoder. With analog (0-10V) signal i can read back the current speed. The conveyor convey paper sheets. Occasionally they change the width of the paper but the the two type of paper is connected. We have a camera on the begging of the conveyor, and we would like to lets say cut it 2 meter later. But the position should be very precise otherwise we are not cut it in the good position. The cutting procedure would happen also an asynchronous motor or with servo motor.  Is it possible to write a tracking program and cut paper sheet in a good position ? My plane is to stop the CV in the position and waiting for the cut and go on.  The plc is Allen Bradley, control logix 5580. Any tip would be appreciated. Thank you so much. 

  3. Product ID tracking in a sorter machine

    arcotangente posted a topic in Mitsubishi

    I'm writing a PLC program (Q Series Mitsubishi PLC, GXWORKS 2 Software) for a package sorting machine. The logic of the machine is the following:   Packages are induced in the conveyor. A barcode reader scanner gets the package barcode. Barcode is send to our SMS (sorting management system), it calcules the exit and send it back to the PLC. Package travels to the calculed exit, then is derived into the chute.   The tracking of the products is done by an encoder and a shift register. This means that every memory address represents a physical position in the conveyor. Then, the shift register move the bits representing the packages along the memory buffer, till the bit arrives to an address that represents an exit, so the package can be derived.   My problem is not the tracking of the product, but the product ID tracking:   When a package enters in the conveyor, an ID is set for that product (1,2,...,n). The idea is that this ID is used to track the state of that package, for example if the package was derived in the correct exit, if it has a damaged barcode, etc.   My question is, how can I track this ID along in an efficient way. I was thinking in use the same shift register not moving a sole bit, but moving a larger number for example |1|0000011|, where the first bit acts like a flag that represents the existence of a product and the rest of the numbers is the product ID. When the flag gets to the exit address I can substract 10000011 - 10000000 = 00000011, to get the product ID.   Is any more efficient way to do this ?
  4. Platform:  Logix5000 I have a relatively simple task I am trying to complete.  I need to track the status of a 100 part sequence to see how many parts have been rejected.  Essentially, I need to keep track of the last 100 cycles and count how many parts of the last 100 have been vision rejects.  I have written most of the logic, using FIFO with an integer with an array of size of 100.  Where I am getting stuck a bit is how to accurately get the count of the array.  I did make a for statement which will count the array and add it to a counter if the first bit is equal to 1, but this doesn't seem to be a clean way to do it, as I would also need to clear that counter before running the for statement.     Thanks,
  5. Hi guys....first post here. It's been about 6 years since I worked heavily with PLC's and automation, but I'm getting back into it. I was hoping you might be able to help me with an issue I've noticed at work.  Problem:  The sensor we use just reads if there's something there, or not. A make or break if you will. When boxes are pushed together and there is no gap between them it thinks there's a jam (after 6 seconds) even when the boxes are moving past (as they should).  A jam stops the conveyor belt requiring someone to physically move the boxes to clear the sensor and restart the equipment.   I'm trying to find a sensor that will see the distance changes from box to box (mounted on the side of the conveyor). Only when there is a true jam and the distance isn't changing will it send a jam signal.  I've tried researching sensors and have been overwhelmed by the endless possibilities and combinations (not all of which I understand).  We are currently using an Allen-Bradley 42EF-P2RJB-A2H It would be ideal to have a similar style plug, but it isn't a deal breaker.  Here's an idea of what I'm dealing with. (The actual conveyor the jams are occurring on is a decline belt, not a roller accumulator.) There are varying box sixes, but they are all packed together. Creating a gap between boxes or using metering belt is not an option here. Thank you for any help/guidance you can offer! -Steve
  6. Hello Screw Conveyor Consist of  Inclined Pipe Trough with Inner Screw Flights with Specific Diameter and Pitch on Pipe connected to End Plates 
  7. Hii Screw conveyors are basically for bulk materials with variable properties depending on the application. They can be sealed against dust or moisture, jacketed to act as dryer or cooler. Where shall I buy Screw Conveyor in Mumbai?
  8. Hii Flat Belt systems are predominantly used for handling all types of packaging or loose products. Depending on the use, the belt finish can either be a grip surface for inclines, low friction or food quality, this is achieved using either rubber, PVC or specified materials. Where shall I buy Flat Belt Conveyor in Mumbai?
  9. Dhanvanthri Engineers Pvt. Ltd., is a private limited company established in 1983 having well-equipped manufacturing facility at TTC Industrial Area, Mahape, Navi Mumbai in the close vicinity of Mumbai.
  10. I'm looking for some general information about different types of vibration/temperature sensors. What type, brand, model number, etc. will best fit my application.  Scenario: I want to monitor the vibration and temperature of multiple motors and gearboxes for a large overhead conveyor system. If an oil leak occurs and temperature increases, I want to see a temp. alert via a HMI. If a something mechanical fails, I want to see a vibration alert via a HMI.  I've looked into sensors that stick to the outside housing of the motors or gearboxes via a magnet. My concern is justifying the temperature readings. How accurate would a sensor that reads an "ambient" temperature be (compared to a thermocouple on the motor coil itself or some sort of probe)? Also, would the location of the magnet  on the motor or gearbox drastically affect the temp. or vib. readings? Has anyone had success with a similar setup? If so, what devices did you utilize? Are these systems truly beneficial?  I'm currently considering Banner's wireless products...
  11. Hi,friends. I have a project which is about control of speed.When I do this ,I need to use  Schneider PLC with M238 by using PID Controller.I decided to  control  speed of electric motor of this PLC . Is there any source material or anyone who struggled with this before  for this project?