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kikitron

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Posts posted by kikitron


  1. @Joe Tauser  Thank you for the link and I dont know what did you think by homework and C programming.

    I dont need to test encoder directly on the machine with original panel and V430. I was just asking if it is possible to test encoder at home on the bench that I can know if its working properly.

    One solution is that can be tested with LED diodes on the output signals but is only visual and I think not 100% test, so i thought to use my V430 for better test.

    I allready connected the encoder on my V430 like you saw on the video and configure HSC input (A,B) Shaft encoder (X2) / MI 0 and link MI 0 on HMI Variable: Numeric .


  2. Correct, real lenght is not OK at the end. I look the machine and everything is ok.
    Encoder is directly driven from metal sheet by the wheel. Wheel is connected with encoder with a clutch between.

    "Between someone changed encoder with new one (RLS RE36IA0613B10F2A00)  and it was working only 1 week and then died. "

    How can I make a program on V430 that I can test old encoder and see that A and B channels are working ok without Z ?


  3. Hi to all

    Thank you for the answers.

    Encoder is 24VDC and I allready connected it on the PLC (picture in attachment).

    On HMI I add Variable numeric to see numbers when I turn encoder CW it goes from 0 to 32128 and then switches on -32000 to 0 and again from 0 to 32xxx.

    I have one machine that encoder is installed and Im not shore if the fault is in encoder so I would like to test it to be shore before I buy new one.

    The encoder measures the length of the sheet metal on the machine and does not show it correctly. On 6000mm of length he shows more then 500mm more, every time different.

    Encoder is connected on external panel that has connections A, B, +24V and GND (picture in attachment)

     

    Now I would like to write some simple program that I can see that channel A and channel B working ok.

    So its just for bench testing.

     

    encoder_kon.png

    IMG_0329.JPG

    IMG_1995.jpg


  4. 1 hour ago, kikitron said:

    Hi to all,

    I have one project that I read analog pressure sensor 4-20mA (0-250BAR). I need to switch valve ON and OFF on setted value min and max.

    Now I have setted that valve is on allways when he is below 160bar and when he reach 160bar he goes off. And when pressure drops below 150bar he is ON again till 160bar.

    Program is working but if I would like to change minimum and maximum values I need to set it in the program and writte it to plc.

    Is it possible to do changes directly on the display for MIN=0-250bar and for MAX=0-250bar?

    For example I would like to change MAX=180bar and MIN=100bar directly on display.

    test.U90 77.25 kB · 0 downloads

    I found the sollution :)

    Thank you anyway, admin can delete this because I was to quick to open new topic.

     

    Regards


  5. Hi to all,

    I have one project that I read analog pressure sensor 4-20mA (0-250BAR). I need to switch valve ON and OFF on setted value min and max.

    Now I have setted that valve is on allways when he is below 160bar and when he reach 160bar he goes off. And when pressure drops below 150bar he is ON again till 160bar.

    Program is working but if I would like to change minimum and maximum values I need to set it in the program and writte it to plc.

    Is it possible to do changes directly on the display for MIN=0-250bar and for MAX=0-250bar?

    For example I would like to change MAX=180bar and MIN=100bar directly on display.

    test.U90


  6. I tryed with different values of linearization on analog input but with no luck. 

    I would like that when I have potentiometer in the middle on scale 5 analog output needs to be 0V. Now 0V is on scale 8. I have less rotation adjustment from 0V to 10V (scale 8 to 10). And I have more rotation adjustment from 0V to -10V (scale 8 to 0).

    Linearizarion is working ok only that 0V is not in the middle of the potentiometer.


  7. Another question about potentiometer.

    To regulate analog output +/- 10V Im useing potentiometer 4,7kOhm + resistor on analog input (4...20mA).

    Potentiometer scale is 0-10 (pic in attachment) and now I have problem that my 0V is on scale 8 and not 5.

    Is it possible to calibrate somehow that my 0V will be in the midle (scale 5) ?

    +/-10V is now working ok but my 0V is on scale 8 and I regulate 0..10V from scale 8...10 and 0V...-10V from scale 8-0.

     

    prime_presentation_pres_0007.jpg


  8. Here is my test program that its not finished yet, because I need to add function that cylinder automaticaly moves back to Home Switch when I release button.

    In my project I have proportional valve that needs +/-10V to drive it and I have 2 valves that has to work together.

    1. When I press and hold Button_1 first it has to activate Valve_1 and after some time (timer T0) it has to activate Valve_2 and proportional valve on speed MI 0.

    (Cylinder is moveing when proportional valve is acivated).

    1.1 This is written in the program in Part 1 and its working.

    2. When cylider activates End Switch it has to move back automaticaly until he activates Home Switch:

    -  Button_1 is not pressed

    - Valve_1 is activated

    - Delay activated Valve_2 and Proportional valve on speed MI 2

    2.1 This I have to add in the program Part 2 :/

     

    test_analog-out_KIki.U90


  9. Hi to all again.

    I have one question about ladder program that attached me @Flex727.

    I have only one button and two end switches. I have on hydraulic cylinder to move down manualy and up automaticaly.

    When I hold button I need setted output from MI 0 to move cylinder to the end position.

    And when cylinder activates end switch 1 then I need output from MI 2 to move cylinder automaticaly  in zero position.

    And when he reaches zero position he activates end switch 2 and he stops.

     

    Is it possible to do that?

    I know how to do it with digital outputs Reset and Set, but with analog outputs no :unsure:

     

     

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