Re: Intro questions - Windows/Kflop/Kanalog and a 17k pound milling machine conversio
Originally Posted by
Dancy
Agree Murray;
I am not a fan of this VFD. Originally I was running my mill with a rotary phase converter and a three phase variac to balance the power. I know when that Fanuc tries hard moves it creates some nasty power spikes and twice those spikes have killed the drive to the tune of near $3000 in repairs. For something of the class it's supposed to be, I expect better protection and it not fry it's self. I now use a 30kw propane three phase onan generator set for this reason alone and as such my operating expenses have increased more than I would have liked.
Question for Tom;
some years back when I first looked into a control upgrade, a competitor utilised a device from Galil to manage much of the control. It's a DMC-4080. Have you ever interfaced the Kflop to something like this (I have one of the expensive little critters). Advantages/disadvantages?
Keshka
Just to put things in perspective, I'm running my lathe (7.5 KW spindle) on a well balanced 15 HP rotary phase converter and have not had any problems, even when it was Fanuc powered. I'm still using the Fanuc spindle motor but am powering it with a GS3 VFD. I replaced everything else that said Fanuc on it, now using DMM 1.8KW servos for the axis drives.
There would be no reason to add a Galil DMC 4080 to a Dynomotion system. They both do the same job. It would be redundant. However the DMC-4080 is higher performance and has all of the Kflop/Kanalog features and accessories already built in out of the box. USB, serial, and ethernet interface, 8 axis, 60 I/O, dual encoder inputs on each axis, stepper, PWM, or analog command (selectable for each axis).
I have a DMC-4080 on one machine in my shop, and run two others on DMC-1846s
Jim Dawson
Sandy, Oregon, USA