Re: [Emc-users] Running servo amplifiers in velocity mode vs. torque mode

We found out in Wichita that the Pico drives can't handle a high enough voltage for these servos. So that is why the decision to get the the AMC BE25A20 drives when some became available. The 'E' in the part number is because they will accept encoder input for running in velocity mode, so in this

Re: [Emc-users] Running servo amplifiers in velocity mode vs. torque mode

On 03/01/2017 07:46 AM, dragon wrote: > I have a project coming up soon that involves a retrofit of a Cel-Con > HMC. The owner has a bunch of AMC BE25A20 drives to use on it. The servo > motors are Fanuc red caps and we have some of Pico Systems' converters > that give us the hall and encoder

Re: [Emc-users] Running servo amplifiers in velocity mode vs. torque mode

Ah... so in this case, the amplifier itself would do the inner velocity loop. The outer position loop is all that is expected from LinunxCNC then. On 03/01/2017 11:24 AM, Nicklas Karlsson wrote: > On Wed, 1 Mar 2017 07:46:24 -0600 > dragon wrote: > >> I have a project

Re: [Emc-users] Running servo amplifiers in velocity mode vs. torque mode

On Wed, 1 Mar 2017 07:46:24 -0600 dragon wrote: > I have a project coming up soon that involves a retrofit of a Cel-Con > HMC. The owner has a bunch of AMC BE25A20 drives to use on it. The servo > motors are Fanuc red caps and we have some of Pico Systems' converters > that

Re: [Emc-users] Running servo amplifiers in velocity mode vs. torque mode

ragon" <tfishw...@gmail.com> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> Sent: Wednesday, March 1, 2017 10:59:48 AM Subject: Re: [Emc-users] Running servo amplifiers in velocity mode vs. torque mode Thanks Chris... Yeah, if no one chimes in wit

Re: [Emc-users] Running servo amplifiers in velocity mode vs. torque mode

Thanks Chris... Yeah, if no one chimes in with some actual experience I might just have to do that experiment. That Cel-Con should be capable of some pretty decent speeds and does have a bit of mass so that should be a good test. On 03/01/2017 09:23 AM, Chris Radek wrote: > On Wed, Mar 01,

Re: [Emc-users] Running servo amplifiers in velocity mode vs. torque mode

On Wed, Mar 01, 2017 at 07:46:24AM -0600, dragon wrote: > better to run the servo amplifiers in velocity mode or torque mode. I I think the benefits of velocity mode are that it better tolerates (still gives smooth motion with) low encoder resolution and low servo cycle update rates, and it's

[Emc-users] Running servo amplifiers in velocity mode vs. torque mode

I have a project coming up soon that involves a retrofit of a Cel-Con HMC. The owner has a bunch of AMC BE25A20 drives to use on it. The servo motors are Fanuc red caps and we have some of Pico Systems' converters that give us the hall and encoder signals from the motors. I have been doing a