Messages

1

General Mach Discussion / Re: Closed loop options?

« on: February 23, 2011, 07:20:39 PM »

Thanks Overloaded for the parts #s is this for the F series motors?

2

General Mach Discussion / Re: Closed loop options?

« on: February 22, 2011, 12:42:20 AM »

Hood,
   I have found the connectors for my drives they are made by 3M and some online suppliers.
I am still looking for the motor AMP connector part numbers for the F-4050 motors when I find them I will make me up some cables.

3

General Mach Discussion / Re: Closed loop options?

« on: February 18, 2011, 08:21:21 PM »

Hood
   I also found that some of the reliance drives are the same as the AB drives.
Yes same thing here on the cables connectors are expensive and cable from AB are real expensive.
I will find some from some of the surplus guys around here eventually or make my own.
I did find a cable manufacture that makes cables for around 100 us dollars each.

4

General Mach Discussion / Re: Closed loop options?

« on: February 18, 2011, 04:47:43 PM »

Hood
  Sorry typo on the motors they are F-4050 ferrite magnet motors.
The 1398-009 are very much the same as a 2098-010 in size just older.
I was worried about needing active shunts and I will be on the look out for them.
I have been looking for the proper cables for my motors and they are quite pricey.
Did you use allen-bradley cables or did you make your own?
PM sent DXF is fine

5

General Mach Discussion / Re: Closed loop options?

« on: February 18, 2011, 03:32:41 AM »

I just read your Balding Beaver thread and I like the servo for the spindle you are using that is what I plan to use on mine I think I will use a 5kw motor for my spindle it has a 7 HP motor now. 
As far as the balance resistor I believe the reason we use them on RS485 communication is that is balances the load out over the long wire length.

I have found some 1398-009 drive amps and some J-4050 motors which are I believe overkill but are a good price the motors have 6.9nm of torque and 4000 rpm max speed.
I also have found a 1398-030 drive that would be nice for the spindle motor but have not found any motors for the spindle yet.
 

6

General Mach Discussion / Re: Closed loop options?

« on: February 18, 2011, 12:32:17 AM »

Hood
   Do you use any type of balance resistor between your Diff signals?

7

General Mach Discussion / Re: Closed loop options?

« on: February 17, 2011, 06:18:18 PM »

Do you have the Circuit diagram for it?
Yes the PCB layout would be great to have.
Thanks again

8

General Mach Discussion / Re: Closed loop options?

« on: February 17, 2011, 04:43:22 PM »

Hood
   Do you have a schematic for your interface or do you use a particular on from the app note?

9

General Mach Discussion / Re: Closed loop options?

« on: February 16, 2011, 06:26:18 PM »

Hood
   Are you using an a negative voltage supply with your single end to differential Driver?
I have some chips here that have 55mv to 4.95v single to different on a single 5v supply but 0 to 4.95v with a negative supply.
What are the Chips you are using with your line driver?
I have on hand some LT6450 from Linear Technology but they only have on channel input.
I was just going to use short shielded cable to tie mine together but I am open to try anything to help with reduce noise.
I will look into the PMDX boards thanks again for the help.

10

General Mach Discussion / Re: Closed loop options?

« on: February 16, 2011, 03:09:23 AM »

I do like the Smooth Stepper's output rate does it need an opto isolated breakout card between the Limit switches?
 My drive manual states the drives have opto isolation on the Step/Dir inputs so I should be good their. 
Also the motor data sheet states they have Multi-turn High Resolution Encoders but does not states pulses per revolution in the manual.
Would I loose position resolution if I setup say a 4:1 gear ratio on my Mill with the encoders of the motors that would be around 250IPM ?
Thanks for the help as usual