Can VSD-E drive DC fanuc/getty

[asuratman]

I have cnc lathe Ikegay FX-25-N with fanuc 5T. This controller is not working anymore but this machine has 2 motor in very good condition. Motor is Fanuc DC 10M (on Z) and Fanuc 5M (on X). Can I use VSD-E to drive this motor to replace old fanuc 5T controller. What voltage and amp required? How to control turret with 6 toolpost, coolant and spindle?

Thanks.

[JerryFlyGuy]

I would think the answer is yes and no.

Yes once the 160v version is released but not likely w/out [at least not w/ the same performance as the OEM system]. I'm not sure what the listed voltage on 10M motors would be, on my 5M's it's 151Vdc and 9amps.. the VSD-A drives [which is what I've got] will drive these handily, however now as Tero has moved to the VSD-E drives, I'd think it' be best to wait until the 160Vdc version is release [which I suspect isn't tooo far away..]

Fwiw..

J

[asuratman]

Thanks J. You are right wait on VSD-E 160. I still have question in my mind what should be considered to choose motor servo DC to work with this VSD-E 160? If only amp and volt, that will be easy for me. I will double check my M10 spec. If spec not met, what motor and where to buy such big dc servo motor to replace fanuc M10. Maybe motor with voltage below 160 V, but greater ampere. Thanks.

[JerryFlyGuy]

Well, I'd approach it this way. #1 I'm pretty sure that the VSD-E's w/ the higher voltage will drive that motor. If they won't [first I'd be terribly suprised] I'd keep the motors and find a different drive that will drive them [possibly the UHU drives?] or maybe some of the more main-stream commercial unit's like an AB or..?

Lastly, if you don't want to go that route and need to replace the motors, I'd first sell them to me and then use the proceeds to buy something that fits the drives you want to use [ the "Selling to me" part being the most important part ].

Seriously though, I'm sure these drives will fit the bill. [I just can't see Fanuc going that far off the reservation w/ the voltages.. but then I might be suprised too ]

Hth

J

[keebler303]

Even if it is rated for more voltage, you can still run it with less, you will just lose a little bit of speed. I'd be more worried about the encoders being compatible, could be absolute or something which won't work with VSD Drives.

Matt

[asuratman]

Yes, you maybe right about encoder. How about if encoder does not match, can we replace encoder in motor with another encother that match with VSD-E-160. The one like rotary encoder US Digital is one of candidate, or maybe anybody in zone have any experience.

[WGoyer]

The encoders on these machines are very standard. 5V operation, Incremental, Quadrature with markers and line driver outputs: A,A*, B,B*, Z, Z*. The resolution will be either 2000 or 2500 lines and that will be printed on the side. The motors do NOT have tachometers though, since the 5T made its own velocity signals from internal Freq to Voltage converters on each axis.


Warren

www.uptimecorp.com

[gavztheouch]

Im looking to do something similer with a couple of high voltage DC motors for my cnc build. Think the voltage is 110v, I have the power supply setup already from the previous drives so a 160v Granite devices drive would save me having to run them at a lower voltage ie below the 80v upper limit.

Drives should be available in 2.5/3 months time, problem is I dont think I can wait that long.....

Was looking at a advanced motion controls drive as an alternative, they seem to pack as many features with a built in scope for tuning, High voltage, support for differential encoders. Has anyone had any experiance with these drives?

[WGoyer]

AMC drives are great - we've used them for many years on all kinds of projects. The setup wizard for the digital/brushless drives works well. The brush type drives need a tach for velocity feedback to get CNC performance so be sure to choose the right drive.

Warren

www.uptimecorp.com

[keebler303]

Originally Posted by WGoyer The encoders on these machines are very standard. 5V operation, Incremental, Quadrature with markers and line driver outputs: A,A*, B,B*, Z, Z*. The resolution will be either 2000 or 2500 lines and that will be printed on the side. The motors do NOT have tachometers though, since the 5T made its own velocity signals from internal Freq to Voltage converters on each axis. Warren www.uptimecorp.com

The VSD Drives do not need a tach. It should be easy enough to check what type of encoders are on the motors before getting too deep. I think I have read about some Fanuc encoders using SPI or something similar for encoder feedback. I have no personal experience but it would be a good idea to check. If they are not appropriate, replacements could be fitted from US Digital, Renco, etc.

Originally Posted by gavztheouch Drives should be available in 2.5/3 months time, problem is I dont think I can wait that long.....

You could always get a few geckos and run them at a little reduced speed until the 160V is out. The Geckos seem to have around 80% resale value on ebay so it wouldn't cost much to just swap them out. You would have to get an appropriate power supply as well though so it might not be worth it to you.

Matt