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You are correct about the voltage limit. I do not have any detailed info on the speed control. It is rated at 80A and can handle 1 to 6 lipo cells

Main reason is my motor speed control can only take up to 25v, I have not looked but I know a 24v ac transformer will produce close to 30v dc, I also already have the ps

Thank you for the info, I'm going to build the circuit I posted and am looking at switching the 5v control. If I can't do that I will move my relay to the DC side between the ps and the protection...

The spindle was still running when I hit the estop. Also my fans were still running. I noticed the burnt ps when I went to reset the system and the ps would not turn on and I started smelling the...

would this be a good circuit to build? http://www.cnczone.com/forums/attachment.php?attachmentid=364942&d=1497491089

I am using a lrs-350-24. My driver's are powered by a sperate unregulated supply. this ps is only for the spindle and the cooling fans. The ps runs an electronic speed control that then runs the...

Would moving the relay to the DC side eliminate the problem?

Hello all,

I am getting very close to the completion of my new cnc router that i have been building for a couple months. Yesterday I finally started doing a test cut which was to surface my table...

Thank you for the info, I may revisit this board and keep it for another project but I decided to upgrade to a more capable set up. I am fairly confident the reg is the problem though.

I will look at it when I get off, I think I can rule out the power supply because I had the failure with the unregulated power supply as well. My next test will be with nothing connected to the 24v...

for ground i was using the (-) connection for the power supply, the blue wire on the top of the board

woodworkerb, if u5 were to be the culprit would it cause u4 to read low? during the last failure i read 3v at the 5v test pad

here are some pics of the board. i have circled U4 and U5 in the pic of the bottom of the board. the blue wire on the bottom of the board is pin 9 (usually not connected) im using it for spindle...

im confident that the stepper ic's are good, i have positive control of all three axis before and after the failure. the only things that is not working after the failure is the 24v fan port and the...

Just ran the machine again for about 5 minutes. U5 reached 150 *F. U4 was sitting at around 70*F. I did not duplicate a failure this time but i shut everything down when i read that temp.

thank you for the reply.



3) Touch the two voltage regulators (U4 and U5) during a 'failure' - are they getting warm/hot? (they should NOT) doing some inspection i noticed that there are dark...

Hi all

I seem to be having a problem with my ez board. This all started when i decided to upgrade my router machine. After building my new machine and starting the setup i am getting some kind of...

i have confirmed that this is a driver board problem not a power supply. i switched back to my original power supply and have the same problem.

ok, plunged in my amp meter. i was reading 29v and 2.1A with the machine sitting there. so i adjusted the voltage pot down to exactly 24v and amps stayed the same. the max i could get for amps was...

i have a suitable amp meter from my rc airplanes. ill plug it in and see what it does and report back.

Hi all,

I am in the process of upgrading my small 1ft by 2ft desktop router to a 2ft by 4ft router. My original machine was powered by a home made power supply that used a 24v transformer,...

so i think i figured it out. the relay board i bought requires a signal going to ground to trigger the relay and also it requires its own 5 volt signal since it is optically isolated. well to solve...

Hi all while im not totally new to my cnc but still learning. so i have a hobbycnc.com diy router, well that is where is started it is not really that anymore. so i have redesigned the gantry to give...

here is a pic of the transformer i am using and a couple pics of my power supply enclosure. i am using an old atx computer power supply housing to hold the power supply. i rewired the primaries and...

thank you for the info i will go and add the other 120 volt coil in parallel. i am now waiting for my mini atx computer case to show up so i an finish my new encloser

Yes this is the power supply for the kit. Thank you for the info that helps a lot.

The transformer has two 120 volt inputs and two 12 volt outputs with a center 10A wire. I'm only using one of the 120 inputs and the 12 volt lines

hello all i have a hobbycnc.com router that my friend built and i don't have the wiring diagram for it. so i decided to redo the power supply for the router and stupidly i did not draw out how all...

thank you for the reply i did get linux cnc back up and running with the new button but the function still does not work when i click the button i get another error saying that "can not open file...

hi all i was wondering if you could help me get my machine going with a touch off plate. i fallowed the instructions on the web sit listed and i though i did everything right but now linuxcnc will...