Yaskawa Minertia motor connections

[belli]

Good day all,
I have a few Yaskawa Minertia DC servo motors, Part No. UGJMEE-02SJB31 I wish to know what wires are what on the encoder, there are 5 wires and a screen into a 6 pin plug, blue, brown purple,orange and white. Any others specs on these motors also appreciated.

Thanks
Greg
www.hobbycnc.co.za

[lucas]

There is some info for the motor in this document:

http://www.yaskawa.com/site/dmservo.nsf/link2/TKUR-5ELHNF/$file/KAE-C240-0H.pdf

For the encoder: did you open it? The Minertia I have has wire markings on the PCB.

[belli]

Hi Lucas,
Thanks for the link, it doesn't have any info on the encoders though. There are no markings on the PCD. There is a capacitor on the board and I would guess that it goes across the power and that would leave A,B and I. Maybe I will just try.

Thanks
Greg
www.hobbycnc.co.za

[Nic Scheepers]

Hi there,

Did you find out which wires is which on the encoder?

Regards

Nic

[belli]

Hi Nic,

I opened the cover and determined the pin outs, I never did find a datasheet with the pinouts. I haven't used these motors as they were destined for a laser project, I bought a sealed laser tube last year Feb, it arrived in March, smashed to a thousand pieces. I submitted my insurance claim then and what followed can only be described as an exercise of sheer frustration! Once I had the mobile number of the CEO (he was dimissed two weeks after I got my cheque incidently) my claim was paid within a month, that was four weeks ago. I might restart my project now that the matter is settled but I am still shaking from the experience. (I won't go into details, maar ek is seker jy weet wat ek bedoel!)

Greg

[Nic Scheepers]

Hi there,

Glad the matter is at least settled

I am trying to determine it myself but I am not very good at it I am afraid. Sat the hole night last night and still not sure what is going where.

I will wait on your reply.

Thanks in advance.

Regards

Nic

[belli]

Hi Nic,

If your encoder is similar to my own, do this:

Remove the cover and you will find a small capacitor across the power terminals (a small blue blob about 2mm square), mine were blue and brown, brown being positive and blue negative, connect a 5V (regulated) power supply across these and then connect any 2 of the other wires to an oscilliscope, when turning the motor you should see either 2 quadrature signals 90deg. out of phase in which case the third is the index pulse or you will see one quadrature and a single pulse per rev, the single pulse is difficult to see unless you can turn the motor really slowly.

Hope this helps.

[Nic Scheepers]

Thanks Belli,

Will have a look at it. And report back.