Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: ostie01 on July 31, 2008, 06:43:43 PM
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Hi, I have this DC speed controller that I would like to use to control the spindle RPM on my router
http://www.surpluscenter.com/item.asp?UID=2008073117382038&item=11-2449&catname=electric
Normally, you would connect a 5K pot to control RPM but can Mach 3 can be use with this board
Thanks for your help, Jeff
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Have a look at the digispeed from homanndesigns.com Think that is the kind of thing you will need to control you speed controller. There are others, think PMDX, campbelldesigns and CNC4PC also do them.
Hood
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Hi, I have this DC speed controller that I would like to use to control the spindle RPM on my router
http://www.surpluscenter.com/item.asp?UID=2008073117382038&item=11-2449&catname=electric
Normally, you would connect a 5K pot to control RPM but can Mach 3 can be use with this board
Thanks for your help, Jeff
Hi Jeff,
I have a range of DigiSpeed products that will work. It depends on what you want in terms of functionality. The DC-02 has an onboard Pot and switch so that you can select either Manual mode or auto mode for control via Mach3.
The DC-06 accepts Step/Dir input and the DC-03 is aa very basic PWM to voltage converter. Have a look at;
http://homanndesigns.com/store/index.php?main_page=index&cPath=1
I also have a selection guide Engineering note at;
http://homanndesigns.com/store/index.php?main_page=page&id=3&chapter=0
Let me know if you have any other questions.
Cheers,
Peter.
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I'm actually interested in this as well as I'm going to be using the same controller on my little taig "cnc" lathe. Peter, how would the wiring be setup with the DC-06? I have a diagram for you.
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Hi, Thanks for the reply, this look like interesting stuff.
DC-03 should work since I do not need the direction option, spindle always spin in the same direction
So this board would replace the 5K pot.
Does it need any feedback from the spindle, I have spindle indexer that send signal to Mach3 to see spindle RPM on the screen, could it be use with this board.
Normally, Speed motor controller does need it to increase RPM when load increase to keep Rpm Steady.
If you tell me that this will work with the Controller I have - http://www.surpluscenter.com/item.asp?UID=2008073117382038&item=11-2449&catname=electric , I am a buyer
Thanks, Jeff
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Hi, phomann.
Just place an order on your website, very interesthing stuff. Thanks
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Hi Jeff,
Thanks for the order. The DC-03 and all the other PWM - voltage converters are open loop. That is there is no spindle feedback to the DC-03. That said Mach3 has a spindle sensor input and can use it for closed loop spindle control, although it works with limited success. Most just run their spindles open loop.
Cheers,
Peter.
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Hi Mr Phomann, just got my order today, thanks.
Is there other version of the board(DC-03) , because on page 16 of the manual, the led is suppose to be a rapid red flashing when signal from pin 1 is present.
Instead, what I get is a slow green flashing with no signal on pin 1 and a fast GREEN flashing when spindle is on after the M3 S2000
I can see the voltage increase and decrease as I increase and decrease spindle RPM with Mach3 on the output of the DC-03 board. Is this OK?
Also, as per the hook up schematic posted by "budman68" on this topic, they're 3 connectors, labeled RED - WHITE - BLACK. (On the motor controller)
There is also 3 terminals on the DC-03 board, labeled AV+ - Vout - AGnd.
Just a hint how to connect, just to be sure. Thanks again, Jeff
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ostie01:
Just curious to know if you ever got this sorted out as I have the same DC controller from surplus center as well as you. Peter didn't seem to want to answer my question here so I thought I'd ask to see how you made out.
Do you have this all setup now?
Thanks,
Dave
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Hi Budman68. Sorry for the late responce, was out of town. No, did not received any responce from Mr Phomann. The board work even if I do not get any RED flashing led. Spindle speed can be controlled by Mach3 but have to use the feedback from the index board on the spindle.
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Thanks, can you possibly tell me how you wired it up? Pics would be a help if you have them?
Not surpirising he didn't get back to you. For some reason he doesn't answer any of my questions here or emails to his site but I see he's logged in here quite often. Who knows.....
Thanks again-
Dave
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Hi, sorry, no pics for the moment. I have removed all wires and cables for the moment. Had troubles with E-stop when working so bought shielded cables and will replace them all. For the hook up, I followed what the manual says but had some troubles to set up Mach3 but after many attempts, I got some results. I also bought a Porter Cable router motor and will eventually replace the DC motor with it. Not enough RPM and with the DC controller, I loose at least 1500 RPM. Before I could get 5500 RPM and with the controller, only 4000 which it's not enough for me. Will replace the spindle bearings with ceramic bearings too. Sorry again if I'm not very helpful to you.
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Hi,
Firstly, let me say that I answer all emails sent to me. Occasionally, I will miss one, but a follow up request will get a response. I also subscribe to and monitor about 15 yahoo groups, and I also monitor this forum and CNCzone.
As to emails I have trouble repling to people who use Comcast as their ISP. For some reason they block my emails. Every time I go through their report/resolution process.
Both this forum and CNCZone are extremely difficult to monitor. It requires me to search all the subjects looking for something relevant to answer. If I find something I'll subscribe to it. It is what I also do to CNCZone. Keep in mind between these two, there are probably more than 500 posts a day. Thinks get missed. As it is it takes an hour or two to troll the forums looking for something I need to reply to.
As a point in case, I was in Beijing for a while from the 5th September. As such I miss a bunch of posts. I'm not going to spend hours searching for things I've missed, I just don't have the time.
Personally, I prefer the Yahoo email list method. I can set filters on Thunderbird to highlight emails that have relevance to me, by looking for keywords in the incoming email.
To solve the problem on this forum, I'd be happy for the moderators to set up a forum called "Homann Designs", then question to my products could be posted there.
As to the original question regarding the LED color on the DC-03. Yes it has changed due to a change in component. The functionality hasn't changed, it is still as defined in the manual.
I spend approximately two hours a day answering questions via email or forums. Occasionally I miss things. I apologise for that.
Cheers,
Peter.
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Peter,
First of all, I don't have Comcast so that's out. Second of all, I was reply number 3 (right after your post), asking for help with wiring one of your boards to my controller complete with diagrams so as to make it as easy as possible, so I thought and not even a reply.
I guess apparently you really are indeed too busy so I'll be looking for another alternative because I'm guessing by your previous post and the fact that ostie asked for help after purchasing one of your products and receivede no answer, that I wouldn't get much tech support anyway.
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Oh, and thanks anyway ostie, I appreciate the replies- ;)
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Peter,
First of all, I don't have Comcast so that's out. Second of all, I was reply number 3 (right after your post), asking for help with wiring one of your boards to my controller complete with diagrams so as to make it as easy as possible, so I thought and not even a reply.
I guess apparently you really are indeed too busy so I'll be looking for another alternative because I'm guessing by your previous post and the fact that ostie asked for help after purchasing one of your products and receivede no answer, that I wouldn't get much tech support anyway.
Fair point. I missed it. Don't have an answer as to why though. It a moot point now but the DC-06 would work fine with the controller.
Cheers,
Peter.