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  1. Minder

    Da sander blowing fuses ?

    By da sander i assume you mean Dual action? Most of these have a Universal motor, That could be a suppression network, but resembles a toroidal choke, can you take the shrunk cover off of it to expose it some? M.
  2. Minder

    Triac dimming

    It sounds as though you have SMPS switch mode P.S.'s, these do not take to SCR dimming, the most reliable is a linear supply, either standard EI transformer or Toroidal, these will often take Triac dimming on the input, but secondary is best, if possible. M.
  3. Minder

    Triac dimming

    What are the details of the 'IP rated drivers'? M.
  4. Minder

    Triac dimming

    Ideally it is best to use simple Triac control the output (12v) side than the input to a transformer. M.
  5. Minder

    Connecting wires

    You did not mention what part of the CNC system this involves? If it is integral to the machine, although I see you are in Lithuania, there are usually regulation's in place for installations in an industrial environment, for e.g. in N.A. we have the NFPA79 which covers the electrical codes for...
  6. Minder

    Which relay should I use?

    Relays made to switch very large DC inductive loads have special qualities built in in the form of arc quenching such as magnetic arc-blowout etc, when a contact carrying this type of load opens that does not have protection, a plasma arc can be produced that continues to conduct Well after the...
  7. Minder

    Help with sensing a stopped sprocket

    I have initially worked on the premise of Relay energized to run, this makes it fail safe in as much as if the power or the unit should fail, it will stop the VFD. Otherwise it could have failed without the operator knowing it. Also it would be a nice advantage to use the Up-To-Speed feature out...
  8. Minder

    Help with sensing a stopped sprocket

    This raises the question as to if there is an intended/order sequence of bringing the systems on line, IOW is it random? VFD and/or pulse checker? M.
  9. Minder

    Help with sensing a stopped sprocket

    Is that a Fanuc control? I used to retro-fit using Mitsubishi, Fanuc were to hard to get on with, as a company. M.
  10. Minder

    180vdc to 75 vdc

    I assume it a battery bank? If so why not do as others have suggested and tap off the appropriate point on the bank. M.
  11. Minder

    Varnish vs enamel

    That appears to be a form of Conformal coating which is aimed at circuit boards etc, if so it is a little different from winding varnish that is very hi-temp rated and can be dipped and baked as in motors/coils etc. M.
  12. Minder

    Help with sensing a stopped sprocket

    Prelim. files sent. M.
  13. Minder

    Protective grounding

    AKA GFI in N.A. I.T. is Information system as in computer etc. M.
  14. Minder

    Help with sensing a stopped sprocket

    Just out of interest, how fast does the sprocket come up to the accepted rpm after a restart? M.
  15. Minder

    Help with sensing a stopped sprocket

    Did you want it sent via Inbox or email? M.
  16. Minder

    How to remove solder from plated-through holes?

    They have pulled out of Canada also, But I got someone in the US to ship one to me. Works pretty slick. I think it was only around $25.00. M.
  17. Minder

    How to remove solder from plated-through holes?

    Some thing like this, https://www.radioshack.com/products/radioshack-45-watt-desoldering-iron?variant=20331816069 Hollow tip. You can even add a small vacuum pump if needed. Not sure if it is avail in UK? M.
  18. Minder

    Help with sensing a stopped sprocket

    So even if the stop is issued just for a brief time, it would stay in stop, regardless of the state of the relay. M.
  19. Minder

    Help with sensing a stopped sprocket

    The method I have used is the VFD is stopped when any two pulses are longer than the min setting. It will automatically reset when when the sprocket starts up above the min rpm. Craig, did you say the when the VFD is stopped this way, does it automatically stay stopped until manually or...
  20. Minder

    Variable speed water pump controller

    Water flowing to the intake constitute a head of water present, so it should be OK. M.
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