I have just recently purchased a lathe which I am going to retrofit, I have never had servos before and am totally clueless when it comes to them.
I dont actually have the lathe yet but the below is a pic of the motors plate, I believe they are running on 90v at the moment but unsure of the current although it could be 40A but how could I find out?. Anybody know where I could find info about them?
Most of the numbers on the sides are not visible. They use tachs for feedback. If you plan on using a modern controller you will need encoders. You can give a Gecko 320 a try see if it will push the motor, if not then buy or build a UHU servo controller, some people run them to 200+V and 30 amp. I will have 3 in a few weeks.
Are you the same person on the MachSupport forum that makes the cool mach screens?
I don't think they are 40amp as it looks like they are rated at torque of 5.15 in-lbs/amp.
Originally Posted by Hood
That would make them max 200 in/lbs max.
Are they permanent magnet field?
Thanks for the replies,
yes same hood, wouldnt really say they were cool screens, just they suit the way I work and were made up to make my touch screen easier to use. I will have a look at these UHU drives, thanks.
I dont have a clue I am afraid, I know nothing about servos whatsoever.
I have had a reply from Womel (Polish manufacturers). I asked if they could supply torque/current and voltage/speed curves. What they said was
"We cannot supply you the curves you are asking about but as there
is linear dependence between Nm and Amps, and Volts and RPM the
torque constant [Nm/Amps] for K-7716 motor is 0,638
Voltage constant [V/RPM] for K-7716 motor is 0,0667"
So basically I think they are saying that for say 80V i should get about 1200RPM
and with a current of say 20A I will get a torque of 12.76NM
Does this sound about right?
Thanks again for the replies