Re: [CAD_CAM_EDM_DRO] relays

Hi Dave,

I've had very good results with the Omron G5V-2 series of PCB mount
relay. They are less than $5 ea in small qty's, have a very small
footprint and switch 2A DC and .5A AC Digikey stocks them (5V version is
Z767-ND). Some users probably switch their spindle motor directly in
which case they will need a larger relay but for interfacing air
solenoids, VFD's and contactors I've found 2A is more than adequate.

Cheers, Peter

turbulatordude wrote:

>Hi all,
>
>I am putting together my second parallel breakout board and on the
>first, I used small half amp relays, but was driving small loads,
>solenoids and stuff.
>
>I ran a motor starter so that was an off board device that only
>needed a signal, so the 1/2 amp worked fine. Seems spindle starters
>will always need a full line voltage contactor so can use low amps
>for the coils, or use VSD's so again low amps.
>
>I'm wondering if there is any great need for higher amp relays on
>board?
>
>it seems that I am faced with either using slightly larger 5 or 10
>amp relays, using mini's and powering external relays ( when
>required ), or just moving them off-board alltogether.
>
>anybody burn out relays on board to make that a less favorable
>method ?
>
>Any recomendations on mini's vs. 5A/10A vs. off board ??
>
>
>Dave
>
>
>
>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@...
>Moderator: jmelson@... timg@... [Moderator]
>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/
>
>
>