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  1. karkas44

    Running Synchronous AC brushless servo (Mavilor BLS 112A & Mavilor 113A) on VFD

    Okay, now I'm kind of disheartened. Then what's the use of the open-loop control for synchronous PM motors? It will only work with perfectly and eternally constant loads? Even with all the necessary parameters, the system will fail with a slight momentary increase in load torque?
  2. karkas44

    Running Synchronous AC brushless servo (Mavilor BLS 112A & Mavilor 113A) on VFD

    Okay okay, hold on a bit. I am starting to study this type of control for these VFDs, but why isn't it going to work in open loop if there's any load attached to the motor? I talked to the customer and asked to check again if there's a manual or something to give me the most info they can on...
  3. karkas44

    Running Synchronous AC brushless servo (Mavilor BLS 112A & Mavilor 113A) on VFD

    Hello everyone, mikekilroy: You're absolutely right, actually I told them we could install the servo modules in the AB chassis and get them to work with the drives as in the other machines, but they in fact told us they didn't even want to buy the programming cable for the servodrives to...
  4. karkas44

    Running Synchronous AC brushless servo (Mavilor BLS 112A & Mavilor 113A) on VFD

    Hello Curt, In the slection guide for these drives, I found a resolver-drive compatibility table that shows most of all Tamagawa resolvers, actually the resolver specs for these Mavilor motors has been very hard to find, in the specs of the motors they only give excitation voltage and...
  5. karkas44

    Running Synchronous AC brushless servo (Mavilor BLS 112A & Mavilor 113A) on VFD

    Hello Curt, Thank you very much for your response. I have found a Drive with Permanent Magnet Brushless motor capabilities, this is the drive http://www.ab.com/en/epub/catalogs/36265/1323285/9544342/Introduction.html As you can see it can control this kind of motors and in supports...
  6. karkas44

    Running Synchronous AC brushless servo (Mavilor BLS 112A & Mavilor 113A) on VFD

    Hello everyone, I am new to servomotors, and there's a client I have who wants to see if it's possible to run these motors mentioned (Mavilor BLS112A & 113A) which are brushless, synchronous AC motors on a VFD. They are having problems with their maintenance staff to work with the...

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