Alex1277

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Posts posted by Alex1277

  5. Posted

    Ok, I understood your point,but nothing to do with OEM. This "machine" were disigned internally 3 years ago and company just send out contract for control panels assembling. After controls panels arrived they hooked them up and call me to start up this creation.

  7. Posted · Edited by Alex1277

    So why am I mentioning this? Because at one point, I'm sure that the way your dual-PLC was designed made sense to someone. That doesn't mean necessarily that it continues to make sense today. Would your process be more robust if it were redesigned to use only one PLC in one cabinet? How much downtime does it have? How much do you think it would have if it were rewired the way that makes better sense to you? Do you have any opportunity to take it out of production long enough to retrofit it? Can you get management to support this decision? These are the questions you need to get answers to. And if for one reason or another you CAN'T do anything to it, then I guess you are just going to have to understand it and make the best of it. I asked chef of engineering department what is for you need 2 PLC to control single Dc glue pump .and AC water pump as well as stay allone timers and counters.And I got the answer. Folks! If you are not sitting now you better set down.. He said-we need 2 plc because we have 2 chambers and plc do scan and one single plc can not make scanning for 2 chambers I was speechless about 2 hours... By the way this system never been working and finally I created another one with single controller, flow meters insted of pumps and HMI instead of timers and conters.

  8. Posted · Edited by Alex1277

    Yes, this panels in separate locations and both of them have DC Drive and AC starter and 2PLCs and 3 timers and 2 counters just to control single existing DC glue pump and AC water pump.

  9. Posted

    Hi to all! In the company ,I am working for , I met very strange machine( you can see pics here http://forums.mrplc.com/index.php?act=modu...si&img=276) This is a double mixer. This mixer has 2 chambers, 1 glue pump(dc motor) one water pump (ac motor) 1motor to rotate mixing srew for both chambers,glue and water valves. As you can see from pics. above each chamber they hooked the control panels. Now....... each control panel has PLC(telemechanik twido) 2 timers (!!!),2counter(!!!),and ech panel has DC Drive to control single glue pump +bunch of PB and water pump starters for single water pump. But that is not all......This is the really funny ---on the shaft of glue pump they installed inductive sensors to count the glue amount respecting glue pump RPM. This sensors connected to the STAND ALONE COUNTER(Look at the pics)!!!! water amount counts respecting to the time of opennig valve(simply flow meters would not do it more precisely?) and water amount sets by stand alone timer! (I know...You might started think that I am crazy...but look at the pics.) What is for they need 2!!! PLC??????? I traced PLC outputs wiring---almost all outputs used for flash lights tower I relally confused ....and need any logical explanations . Any ideas?

  10. Posted

    Hi to all! I got hardware problem with Servo Drive (R7D-AP04). Instead of max 235VAC (as manual stays)it was powered up with 255V( 220V plug pulls out almost 260 V because of transformer never been adjusted ) Now I am getting error code A40(overvoltage) occurs when power supply is turned ON. This error does not reset. Looks like main-circuit power supply is damaged. I believe it is possible to fix "at field" instead of replacment this quite expensive unit. I have no time to go throughout cycle board. May be someone has an experience with it? Any help will be appreciated. Thanks!

  17. Posted

    Thank you evrebody for your responds in my previous topic. My project with load cell becomes over budget and I have to find other wayes to do that. Now I want to try GF flow meter(http://www.gfsignet.com/products/fs2537.htm) I have choise between 4-20ma and pulse output. As I considering since FX1N hase hifreq. inputs and outputs that pulse output is going be the chip solution. Otherwise I have to bay A/D module for 4-20ma .What do you think about this?