Syil X5 motor drive

[bubblevisor]

sdsv

Hi guys. New to this forum and in need of some expert advice.
I am in the process of converting a Syil x5 with acorn. However I cannot get the motor to run on a VFD. THe vfd runs fine on other 3 phase motors but run very slow (circa 100rpm) and hot with the syil motor. What am I doing wrong? I cannot find any data on this motor but it has 3 power cables plus ground and a separate set of data cables connecting to its hall sensor. Does this motor need the hall sensor connected to the VFD to run? Any help appreciated!

[Centroid188]

Can you read the voltage required on the motor tag?
That looks like a AC brushless Servo, not a 3 phase induction motor as a Inverter would use..

[bubblevisor]

Yes I looked up other ac servo motors and it does look very similar. Would you be able to suggest a suitable driver device?

[bubblevisor]

I found these servo drive on aliexpress.
https://www.aliexpress.com/item/1005002 ... 2799%21sea

Any advice on the suitability?

[Muzzer]

That motor has Hall sensors, so it needs to be driven with trapezoidal (rectangular) voltages. VFDs (and servo drivers like the one you linked) generate sinusoidal voltages and run either an open loop arrangement (typically an induction motor) or expect an incremental encoder (for a servo motor).

You need a BLDC (brushless DC) drive although the terminology is not black and white. It would need to have 3 Hall sensor inputs.

TBH, it may be better just to put this on the shelf and buy a matched servo+motor set that you know will work.

[bubblevisor]

I see. SOunds like good advice. And I can use the opportunity to uprate the power from 1kw to 2kw.

Are there any limitations/considerations with regards to Acorn controlling a servo drive? Presumably you will not be using the 0-10v output signal used with VFDs? Here's the motor/drive combo I am thinking of.
https://www.aliexpress.com/item/4000010 ... 8036%21sea

[suntravel]

I use JMC Servos. This one could fit with some modification, its 110mm frame:

https://de.aliexpress.com/item/32961677 ... ae%21%21sh

Wiring is here:

https://centroidcncforum.com/viewtopic.php?f=60&t=7119

Uwe

[Muzzer]

Here's the motor/drive combo I am thinking of.
https://www.aliexpress.com/item/4000010 ... 8036%21sea

I've used these LiChuan systems on my 2 lathes (600W and 1kW) and they work well for the money. The fans were a bit noisy so I changed them for quiet PAPST equivalents. Compared to a Yaskawa, they are fairly light on features but as a step/dir driven servo system they work fine. They connect up to an Acorn without any issues.

[bubblevisor]

THanks Uwe. That's very helpful. THe documentation seems to be very good too with the JMC servos. Did you find it necessary to use a cooling fan for your motor? Also will this setup work for rigid tapping? The encoder seems to be sufficient to support it.

[suntravel]

No fan needed, and yes it taps fast:



I run them on lathe and mill for hours at the upper speed, and they not even become luke warm...

Uwe