On Tuesday 26 July 2016 02:36:35 Bruce Layne wrote: > Russtuff just uploaded a quick video showing how to program a Huanyang > VFD that might be helpful. > > https://www.youtube.com/watch?v=7OszQS_BQMk > Thanks Bruce. I'll look tomorrow as its the middle of the night for me ATM and the video might wake my missus.
> He's programming it for RS485 control, which would be nice now that > Huanyang VFD support is in LinuxCNC 2.7 and above. I think many of > the Huanyang inverters do not support the com port and it's difficult > to tell which do from a visual inspection. The eBay specs are usually > cut-and-paste and are often incorrect. I've read that even if the > Huanyang VFD has the proper chipset to support the com port, it may > not have the hardware as a cost saving "feature". I have a few of > these VFDs. I should connect them to a motor one at a time and see if > any of them support RS485, and use that for future CNC projects > instead of relays and 0-10V analog control if possible. I am not sure if RS-485 is supported on the device I bought. But in emails from the seller, I was assured it would run with run/stop, dir, and a straight pwmgen output for the analog input, just feed it into the 0-5 volt port. However, and this is a huge IF, I have found that powering it down overnight restores it to default settings, so I'll take it apart and see if its got a dead CR2032 or similar in it, because the defaults, while safe, suck at about 10ee-37 tor. Something similar to where the Voyagers are now. If it doesn't have a backup battery thats dead, then an rs485 channel will be needed to be setup and an initial configuration stream will have to be fed to it. That rather sounds like a PIMA to me. > However, even if you aren't interested in RS485, you might be > interested in the part of the video that deals with the parameters for > ramp up time, ramp down time, motor current, etc. Absolutely. I suspect I might have to have Peters help in cobbling up an upload to the 5i25 I'll run it with, to put some different stuff on the P2 plug header as I don't think its present setup can do RS-485 anyplace. The image I have in it now essentially dups the 4 stepgens, a pwmgen and an encoder on each port for 8 stepgens, two pwmgens and 2 encoders per card with whats left as GPIO's. But first, read the fine but tiny manual. It also has mention of braking R's, but no terminals to attach them were to can be found. I did take it apart looking for those. > On 07/25/2016 02:56 AM, Gene Heskett wrote: > >>> Greetings to you who are running an inverter driven spindle; I > >>> have one of those 1 HP 230 volt 3 phase motors on the table, in > >>> this case the one with the noisy bearings but it still rolls dead > >>> free. With the inverter set to 90 hertz and its running, pushing > >>> the green run/stop to stop it gets a rapid drop to around 75 hz, > >>> then its turned loose to coast for quite a spell, 10 secs maybe, > >>> at the end of which the DC comes on and its dead in its tracks in > >>> less than 1 more rev. > Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic patterns at an interface-level. Reveals which users, apps, and protocols are consuming the most bandwidth. Provides multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make informed decisions using capacity planning reports.http://sdm.link/zohodev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
