Gerald / Anyone

On the E-Stop operator, there are two contact blocks. One for the low voltage PMDX BOB. The other is for the 115 VAC circuit. On the 115 VAC circuit, does the contact block attached to the E-Stop need to be rated for higher current? I didn't see any voltage/current rating in the contact block spec sheet. I don't think there is a difference, since the contact block is wired to the contactor for the mains. The contactor switching the mains takes the full load and not the contact block attached to the E-Stop. Just need verification.

On the contact blocks for the E-Stop, do I what delayed break or not. Not sure what the difference is.

The current ratings are not an issue - your thinking is correct.

If you are stacking various contact blocks under one pushbutton, and you want to be sure that a block is the last one to break as you push the button downwards, then you need a delayed break. We don't need this for E-stops.

Thanks Gerald,

I'm putting together my "small parts" material's list for the "kitchen" project.

I'm upping the current rating for the mains contactor (TECO IEC Contactor) from 16 A to 22 A. I'm going to want to (I think thats proper english :) ) test the limits of this beast. If all 4 steppers draw 5.5 amps (total) and the router is making a deep cut at 15 amps, then I think 16 amps is low.

Small Parts List
 

Greg,

Did you ever come up with a small parts list? I'm virtually finished with the mechanical stuff and now I'm ready to start ordering the electrical pieces. Lots of decisions to make. I'd feel much better if Gerald had blessed off on the stuff I need for a 203V system if he will agree to do so.

If you don't have a completed list, I'll try to put one together over the next few days.

Doug,

Yea, I have an excel spreadsheet. Let me make the corrections (and clean it up) to what I actually ordered. Should only take me 1/h hour and I'll try to upload tonight.

Have to go into town (post office) to pickup the bearings for J.R.'s skate, and look for a drill press vise.

Been so busy with other things, that I havn't had time to work on this project.

Greg

Doug,

It didn't take as long as I thought.

What's your email address (send it by PM) and I'll email the excel file.

Greg

Hi Greg

How is your design for your "skate" coming along, I am also in the process of designing my own and would appreciate a look at your ideas.

Regards Al

Hey Alan,

The design is getting near completion. Drawings and all. I just haven't had the time to work on it. It's a 3 day holiday weekend on my side, so I'll finally get to have some fun and start working on it. I quickly put together a parts list for McMaster Carr and ordered Monday so I would have something for this weekend.

I don't want to put out drawings till I've made the "skate", but I certainly don't mind sending you what I've got. If your interested, I'll send something this weekend.

Greg