It is going to vary from motor to motor and drive to drive. Some of the drives I have messed about with can have a huge array of settings and variables to get everything set right for your particular motor. I recently found out that about a dozen drives we have were never properly configured by the machine builder for the spindles they were running (all default settings). After I reset the drives, to where they should have been, I noticed a huge increase in motor torque. Cuts that used to stall the motors, now don't even noticeably slow them. It also made a big difference in the rate of the motors accel/deccel times and the current drawn under loads. (I think I ended up adjusting a dozen or more parameters, and looked at a lot more than that.)
But most drives have some parameters for adjusting DC injection braking, timing and more. ----- Original Message ----- From: "Gene Heskett" <ghesk...@shentel.net> To: emc-users@lists.sourceforge.net Sent: Sunday, July 24, 2016 6:40:28 PM Subject: [Emc-users] Nother Q about these Chinese inverters 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. Can anyone tell me how to put the DC to it until its stopped? I have a 5 second stop time set, and the voltage has been adjusted from 8 volts on up to the default of 30, with no noticeable effect on how fast it actually is brought to a stop. 30 volts under other conditions will make it jump off the table at least an inch. So, is there a treatise on setting these things up someplace on the web my googleing hasn't found? Thanks. 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 ------------------------------------------------------------------------------ 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
