Re: [Emc-users] Putting Encoder on AC servomotor???

2008-06-08 Thread Mark Wendt (Contractor)
Paul, Not really sure why you insist on being a total ass, but a conversation such as this belongs, if it belongs anywhere, on the developer list. Unless you just want to piss and moan and act like a complete retard. Mark At 03:18 PM 6/7/2008, you wrote: On Thursday 05 June 2008,

Re: [Emc-users] Putting Encoder on AC servomotor???

2008-06-07 Thread paul_c
On Thursday 05 June 2008, Stephen Wille Padnos wrote: We've discussed various methods of handling larger data types, which this would require. I don't recall ever seeing any discusssion about the usage of data types.. The good news is that once we have that, we can use doubles anywhere.

Re: [Emc-users] Putting Encoder on AC servomotor???

2008-06-06 Thread Mark Wendt (Contractor)
At 10:22 PM 6/5/2008, you wrote: [big scissor sound] - Steve I don't know why, but that got a big giggle out of me this morning... ;-) mark - Check out the new SourceForge.net Marketplace. It's the best place to buy or

Re: [Emc-users] Putting Encoder on AC servomotor???

2008-06-05 Thread Jeff Epler
On Wed, Jun 04, 2008 at 09:57:53PM -0600, [EMAIL PROTECTED] wrote: Hi Servo Dynamic told me that have encoder with too much resolution is not help because drive will not be able to process or use too much pulses from encoder. Are there a MAXIMUM limits of pulses from encoder? Typically there

Re: [Emc-users] Putting Encoder on AC servomotor???

2008-06-05 Thread Stephen Wille Padnos
Jon Elson wrote: Jeff Epler wrote: In emc2 there are practical limits on the precision of position values due to the use of float as the fundamental type for analog values such as encoder positions. For instance, the values 1.0 and 1.0 + 0.5**23 (approximately 1.001) are both exactly

Re: [Emc-users] Putting Encoder on AC servomotor???

2008-06-05 Thread Jon Elson
Stephen Wille Padnos wrote: Jon Elson wrote: Jeff Epler wrote: In emc2 there are practical limits on the precision of position values due to the use of float as the fundamental type for analog values such as encoder positions. For instance, the values 1.0 and 1.0 + 0.5**23 (approximately

Re: [Emc-users] Putting Encoder on AC servomotor???

2008-06-05 Thread John Kasunich
Jon Elson wrote: Stephen Wille Padnos wrote: Jon Elson wrote: A very good point! It seems there would be a 25.4 X benefit then by using mm as the user unit instead of inches, in the case of these very high resolution encoders. (I think you mean + 0.5 * 10 ^ -23 in the above) Nope -

[Emc-users] Putting Encoder on AC servomotor???

2008-06-04 Thread amtb
Hi I am looking for more info about why I can not take out encoder from AC servomotor and put another in? I want to try 1000 000 pulse encoder. If I buy it can I install it my self? Encoder counts revolution, so why I can not remove and put it back? I look on google about that but can some one

Re: [Emc-users] Putting Encoder on AC servomotor???

2008-06-04 Thread Jon Elson
[EMAIL PROTECTED] wrote: Hi I am looking for more info about why I can not take out encoder from AC servomotor and put another in? If the motor has commutation sensors (Hall signals) built into the motor, and separate from the encoder, then there is no problem. Many newer motors, like the SEM

Re: [Emc-users] Putting Encoder on AC servomotor???

2008-06-04 Thread amtb
Hi what it is mean accuratly aligned with motor position? Should i use electronics instrument for that or just posion by looking some marker - hole dots? [EMAIL PROTECTED] wrote: Hi I am looking for more info about why I can not take out encoder from AC servomotor and put another in? If the

Re: [Emc-users] Putting Encoder on AC servomotor???

2008-06-04 Thread Peter C. Wallace
] Putting Encoder on AC servomotor??? Hi what it is mean accuratly aligned with motor position? Should i use electronics instrument for that or just posion by looking some marker - hole dots? Accurate magnetic alignment of rotor and stator and mechanical alignment of encoder disk to shaft

Re: [Emc-users] Putting Encoder on AC servomotor???

2008-06-04 Thread amtb
Hi Servo Dynamic told me that have encoder with too much resolution is not help because drive will not be able to process or use too much pulses from encoder. Are there a MAXIMUM limits of pulses from encoder? can i joint to shaft of my motor another encoder -High-resolution