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Type: Posts; User: rainman

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  1. Replies
    4
    Views
    1,835

    Setup FTP server on Win 7

    Hi all,

    Need some help in setting up FTP server on Win 7.

    Some noob questions.

    1) Is FTP server consider a "software application" that can be setup on any computer?

    2) If the PC's IP...
  2. Replies
    1
    Views
    600

    Current amplifier

    Hi all,

    Basically I need 300-900ma (12/24V) to drive a controllable solenoid.

    Is there a standard amplifier that I can use for this purpose? (Inputs can be potential input or 0-10VDC)

    ...
  3. To simulate sea waves using 4 or 6 actuators

    Hi all,

    I'm trying to simulate the above effect.

    The product will be a platform and holding this platform will be 2 or 3 actuators on each side (made up of total 4 or 6). A person will be...
  4. Replies
    16
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    1,680

    Hi all, Thanks I finally get everything right...

    Hi all,

    Thanks I finally get everything right today. Its a silly mistake of mine.

    I believed I got the phasing at at some point but "overdo" it and make it wrong again because of PID tuning.
    ...
  5. Replies
    16
    Views
    1,680

    Hi Mike, Yes I'm from SG, you are right to say...

    Hi Mike,

    Yes I'm from SG, you are right to say about the drive, I'm using the ZMP controller. The motor is harmonics motor.

    I'm wondering if under the AUXFBDivisor I should set to 8000...
  6. Replies
    16
    Views
    1,680

    Hi Mike, Thanks. There's a very good way to...

    Hi Mike,

    Thanks. There's a very good way to confirm on the motor poles but unfortunately this is a harmonics motor with built in gear, I doubt I can feel the poles.

    I had confirmed the encoder...
  7. Replies
    16
    Views
    1,680

    I only did "reversed" the encoder by changing...

    I only did "reversed" the encoder by changing over the controller side by means of software parameter, unfortunately changing of A,A/,B,B/ are impossible with the right pin extracting tool.

    I...
  8. Replies
    16
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    1,680

    Thank you very much for the kind reply. ...

    Thank you very much for the kind reply.

    Unfortunately I tried all the 6 ways (UVW,UWV,VUW,VWU,WUV,WVU) and all give me the same result. It always enabled motor, give it a slight turn on shaft and...
  9. Replies
    16
    Views
    1,680

    Servo communtation problem?

    Hi all,

    I have a geared servo motor (incremental encoder + halls), a servo amplifier and a controller card.

    The servo amplifier parameters had been configured manually to cater for the servo...
  10. Replies
    6
    Views
    1,096

    That's a straight forward and simple suggestion....

    That's a straight forward and simple suggestion.

    I'm looking at this, http://www.farnell.com/datasheets/57949.pdf

    Probably will get 1-2pc to try out.

    Thanks.
  11. Replies
    6
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    1,096

    The receiving end is IPG YLS-200 laser, basically...

    The receiving end is IPG YLS-200 laser, basically the 0-10VDC is meant to modulate the power of the laser.

    There is no mention of the power requirement for this DAC input from the manual, support...
  12. Replies
    6
    Views
    1,096

    How do I amplify the current of a 0-10VDC?

    Hi all,

    I'm using a controller with differential DAC output of +-10VDC, 3mA. I would like to amplify the output to say 100mA.

    Eg; 6.5VDC 3mA to 6.5VDC 100mA

    Is there any way can I DIY a...
  13. Replies
    4
    Views
    1,877

    Yes I am using XTL xenus drive and CME 2 software...

    Yes I am using XTL xenus drive and CME 2 software for the setup.

    Master has been configured as current - analog. Slave configured as position - camming.

    I'm using DAC output (+-10VDC) from my...
  14. Replies
    4
    Views
    1,877

    Hi Steve, Yes I have a seperate encoder for...

    Hi Steve,

    Yes I have a seperate encoder for the slave axis, the master axis encoder signals that goes back to the CNC controller are parallel connected to the slave's command input (High speed A...
  15. Replies
    4
    Views
    1,877

    Master and slave electronic gearing

    Hi all,

    Currently I'm constructing a master and slave gantry servo system using a single axis from the controller.

    Controller-> X Axis Master->X Axis Slave (via high speed encoder A and B)
    ...
  16. RGH41 linear encoder system...

    RGH41 linear encoder system

    P and Q(Neg Limit) are open collector outputs, does it mean I need put a
    pull up resistor (5kohm) to 5VDC?
  17. Reinshaw RGH41 linear encoder limits termination

    Hi all,

    Can someone tell me if the wiring connection is correct?

    P (Pos Limit)------(-ve of opto coupler)
    +5VDC------------(+ of opto coupler)

    If I connect up this way, by default (no...
  18. Replies
    4
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    937

    I have managed to unsolder it, and only it smell...

    I have managed to unsolder it, and only it smell burnt, even the fuse is intact.

    I'm thinking of buying a standard part and get it replaced, if it's still doesn't work then I will just have to...
  19. Replies
    4
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    937

    Hi all, I realised on the PCB board it says...

    Hi all,

    I realised on the PCB board it says "FIL1", what does FIL means?

    Is it a DC to DC converter?

    Thanks.
  20. Replies
    4
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    937

    Fried PLC!!! Looking for this component

    Hi all,

    I accidentally fried my PLC.

    http://img.photobucket.com/albums/v208/rainman1978/Misc/PCBboard.jpg

    There is an obvious burnt smell on the component as circled. I believe it is an...
  21. Replies
    10
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    909

    Hi vger, Thank you for your reply too. I...

    Hi vger,

    Thank you for your reply too.

    I think I will take your advice to buy a PID controller for it....

    I'm looking at this, specially for peltier


    Do I have to consider the fact...
  22. Replies
    10
    Views
    909

    Hi Martin, Thanks for the useful information,...

    Hi Martin,

    Thanks for the useful information, I'm trying to use it in a lab project, where it will specimen temperature is controlled and there are also some pumps and motors involved. The...
  23. Replies
    10
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    909

    Yup John you are right. It seemed to be quite...

    Yup John you are right.

    It seemed to be quite a useful device, perhaps I can use it on my overclocked CPU.
  24. Replies
    10
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    909

    Anyone use Thermoelectric Coolers before

    Hi all,

    I'm noob to the heating process and would like to know few things about the
    Thermoelectric Coolers.



    http://www.marlow.com/Products/productpage.asp?ProductID=98

    1) Why is it...
  25. Replies
    1
    Views
    1,009

    New to microcontroller

    Hi all,

    I'm new to microcontroller, I wish to try out running a miniature servo motor with it.

    I will be using PICkit and MPLAB, what the the differences between the 2?

    I'm trying to...
  26. Looking for 3 pins metal circular connector

    Hi all,

    I'm looking for the above connector, unfortunately the brand is unknown.

    Anyone comes across this or may have seen equivalent, do let me know.

    Thanks!
    ...
  27. The whole thing looks like this...... ...

    The whole thing looks like this......

    http://img.photobucket.com/albums/v208/rainman1978/Misc/ClimateChamber.jpg
  28. Connection with Humidity sensor (4-20ma) and PLC or temperature controller

    Hi all,

    I would like to know if I am able to connect a (4-20ma output) humidity sensor to temperature controller (PID control)
    Will the PID control goes haywire?

    If I connect the humidity...
  29. Replies
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    1,392

    Thanks Vtxstar and rest who replied, The...

    Thanks Vtxstar and rest who replied,

    The maximum speed difference I can allow is around 2-3%, for instance 1000rpm for 1 motor and 1020rpm for the other.

    The motor inductance is 19mH and...
  30. Replies
    6
    Views
    1,392

    Voltage Divider methods?

    Hi all,

    I have 2 24VDC geared motors, which supposed to be running at the same speed.

    Both motors are supplied with same 24V source. 1 was measured to turn 1 round at 70secs, the other at...
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