[Sneap] Vacuum stepper motors

Wed May 20 11:56:35 EDT 2009

Alistair – Emrick is away for the moment but I can reply in his place.

We have a problem with the controller cards (the ones that are one for each
motor) dying on us. I think we can get them repaired here in France, but
they are apparently obsolete. We don’t know what is killing them from time
to time, but we DO have some nasty mains power supply issues since the
entire University is a huge building site at present due to renovations so
there are outages (bulldozer cut main supply cable, for example) and spikes.
However these cards have always been a bit of a problem for us – maybe we
just use them badly 

The main problem is the motors themselves which are no longer supplied. We
have one that  has a shorted coil and another that mostly vibrates rather
than turns. They have done around 15 years (or more 
) of service so we
can’t complain – but we do need to replace them.

It looks as though we have found a supply of second hand motors that should
keep us in business until we can re-design the stage to accommodate
available modern steppers.

Many thanks for your time

Ian V.

De : sneap-bounces at tunl.duke.edu [mailto:sneap-bounces at tunl.duke.edu] De la
part de Alistair Muirhead
Envoyé : mercredi 20 mai 2009 00:35
À : Symposium of Northeastern Accelerator Personnel
Objet : Re: [Sneap] Vacuum stepper motors

A quick search on Google and I found this second hand controller.
http://www.alltest.net/Newport-MM4006

What sort of issues are you having with the controller and the motors?

Regards
Alistair

Emrick Briand wrote: 

  _____  

Dear sneapers,

We have a motion controller MM4006 from Newport which pilots some vacuum
stepper motors (10-7 mbar). We are having some problems with the electronic
part of the controller and with the motors themselves
 Does anyone know
where we could find second-hand motors? Do you know of any companies which
sell them?

Many thanks in advance.

Emrick BRIAND

---------------------------------------------------

Emrick BRIAND

SAFIR, Sous-sol 23-13
Institut des NanoSciences de Paris

 UMR 7588 du CNRS
Universite de Paris 6
Campus Jussieu
4, Place Jussieu
75252 Paris Cedex 05 France

Phone : +33 1 44 27 47 10
Fax : +33 1 44 27 47 11

Planning SAFIR :  <http://www.insp.jussieu.fr/safir/>
http://www.insp.jussieu.fr/safir/

  _____  

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Alistair Muirhead
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