Re: [CAD_CAM_EDM_DRO] loking for help with power supply for rutex drives...

We use the Rutex drives - Power supply can be very simple - just a straight
isolation transformer with an AC voltage output of say 70 Volts. Couple this to a
full wave silicon bridge rectifier and electrolytic capacitor rated at 8.000 to 10,000uf at
100 Volt working voltage. This should do the trick - Loads of circuits on the web for a
simple supply - email me if you dont have any luck and I will draw one for you.

Couple of other comments, you may want to include a mains filter on the input
side of the transformer - this would protect against any short spikes etc on the mains.

Use good quality caps with a high ripple current ripple rateing

You may get away with a single mains transformer to drive all 3 amps - as long as you
allow for a good current rateing, which should probably be rated at 20 Amps.

Good luck

Dave Fisher


The current rateing.
I not really need to be the doubt would

----- Original Message -----
From: "keith" <jasonkth@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Thursday, December 11, 2003 7:39 AM
Subject: [CAD_CAM_EDM_DRO] loking for help with power supply for rutex drives...


> i want to build or buy a power supply for rutex drives. i want to
> use three of them to power three 3/4 hp micro 100 dc brush servo
> motors on my old knee mill.
>
> i'm not sure which drive are best fitted to my motors, but i'm
> leaning towards the R90H (200V/40A). there are two other sizes
> available that i can use if i can find the right power supply for
> them. R990H2 (200V/10A) or R990H (100V/20A)
>
> if i'm to build one,i need help to select the appropriate components,
> as i am a machinist, and not an engineer. can anyone reccomend which
> components i would need and where to find them? what va rating for
> the transformer? what type of rectifier? what kind of capacitor or
> filter? any schematics for this?
>
> or can anyone possibly reccomend where i can buy a power supply?...
> just got the motors, can't wait to get this up and running!
>
> my motor info is as follows:
> Nema 42 Face mount with 5/8" output shaft
> > 120 Volt Nominal Terminal Voltage Rating
> > Torque constant: 5.75 Lb-In/Amp
> > Cont Torque Rating: 34 Lb-In
> > Peak Torque: 150 Lb-In
> > Weight: 14 lbs
> > It is rated for up to 120 Volts, 5.8 amps.
> > The motor's back-emf constant is 68.6 Volts/kRPM...so,
> > The motor will run 15 RPM for every volt you give it.
> > For example, on a 48 volt supply, you could expect 700 RPM for a no-
> load
>
> micro 100 reliance electric
> model no e723
> serial no g000046
> date code 2597
> revision b
> part no 0723-03-049 A
> ccustomer part no 3/4 H.P. PWM
>
> encoder #s heds-5605 A06 0333 A
>
> regards,
> keith
>
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@..., timg@...
> Moderator: pentam@... indigo_red@... [Moderators]
> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto: aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a sister site to the CCED group, as many of the same members are there, for OT subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM. DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> bill
> List Mom
> List Owner
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>

[Non-text portions of this message have been removed]