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December 14, 2017, 08:17:19 AM

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 on: December 14, 2017, 07:00:03 AM 
Started by emco - Last post by cwilken
I am interested to know if anyone was able to Make the Welturn upgrade to the EMCO 5  lathe work with Mach3 or Mach4?HuhHuhHuh

 on: December 14, 2017, 06:03:29 AM 
Started by greenene - Last post by greenene
That may explain the issue. Thanks.

 on: December 14, 2017, 05:50:55 AM 
Started by Tona - Last post by Assignmentglobe
Thank you

 on: December 14, 2017, 05:46:48 AM 
Started by bluebumper - Last post by joeaverage
so I guess its what you want rather than what you need.

I suggest to start with just have Mach turn it on and off with speed set by the VFD control panel. Once you've got that happening program the VFD to accept
a voltage input and use a potentiometer to provide the voltage. Once your happy with that then use  PWM output to supply the control voltage.


 on: December 14, 2017, 05:14:22 AM 
Started by bluebumper - Last post by bluebumper
Hi Craig,

Yes it is all hooked up and working and I can control it from the panel.

This is new to me Craig, I thought it would be easy to set constant surface speed for turning,that is why I went with a vfd and 3 phase motor, I do have another lathe but that is manual and I wanted to get better surface finishes on this one.


 on: December 14, 2017, 04:55:26 AM 
Started by bluebumper - Last post by joeaverage
have you got the VFD hooked to your motor? Can you control the motor (stop/start/speed) from the VFD control panel?


 on: December 14, 2017, 04:48:16 AM 
Started by bluebumper - Last post by joeaverage
constant surface speed requires infinitely variable speed control. Is that what you want or what you need?


 on: December 14, 2017, 04:39:53 AM 
Started by bluebumper - Last post by bluebumper
Hi Craig,

What I want to do is just have the spindle turn counter clockwise as it has a thread on it and not a cam lock, also I want it to have constant surface speed so as the diameter reduces the speed increases and be able to run it through Mach4, that's it...lol


 on: December 14, 2017, 04:30:39 AM 
Started by jlbs00 - Last post by joeaverage
no, you don't have to use position control. Position control is very precise and good for threading but even for threading you can use just speed control.

I suggest then that you concentrate on velocity mode control. Once your familiar with that some of the other strategies will make sense but for most of the
time velocity control will be good for what you want to do.

You will need to program the drive to accept an analogue voltage as a velocity control input.

You will also need the UC300 and BoB to produce an analogue voltage from PWM.

There will probably be two (at least) other control signals between the UC300/BoB and drive, an enable signal to the drive , a fault signal from the drive
to the BoB/UC300 and possibly a fault reset line as well.

What BoB have you attached to the UC300? Can you post the manuals?


 on: December 14, 2017, 04:14:04 AM 
Started by jlbs00 - Last post by jlbs00
Hi Craig,
Thanx a lot,
 So, that means I have to use my servo drive in position control mode.my requirement mostly will be plain and profile turning and boring.so,will position mode be ok for my operations?secondly can u help me with  signals from mach 3 to uc300 to my servo drive asda-B2-0721( I mean which signals to use,I m kinda lost there).
If it's position control mode,will I be getting the reqd torque or power from the drive.
Your answer will help me a lot.
And thanks once again for replying.


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