DMM DYN4 Bench test with Centroid CNC Acorn
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- Опубликовано: 11 сен 2024
- This is a basic configuration and bench test with DMM Technologies DYN4 and Centroid CNC Acorn. Dry erase board exercise showing connections and then to the bench where I configure both the DYN4 AC Servo drive and Centroid CNC software, the show the motor running.
DMM Technologies RUclips Video showing Acorn & DYN AC Servo Drive Setup: • Centroid Acorn Setup V...
DMM Technologies Website: www.dmm-tech.com/
Centroid CNC Acorn User Forum: centroidcncforu...
Centroid Acorn resource page: www.centroidcnc...
This video will help me greatly! I purchased the DYN4 for my BP R2E4 and have been struggling to get motion from Acorn. I did order the flying lead cables from DMM after not finding DB25's with the same wire colors or wire gage. Thanks Marty, always look forward to your videos.
Brad, I hope the video helped. Just watch your wiring, and make sure you set the GEAR number to something like 2000, and then, change to Pulse DIR in the DMM software and don't forget to save it to the DYN4 drive. Then setup the motor steps per rev to 4x the gear number, in this case set it to 8000. Good luck. If you have trouble please visit the Centroid User forum and ask questions, post screen shots of your wizard screens, and post a report from the CNC12 software (Utility Menu) we'll try and help
centroidcncforum.com/viewforum.php?f=60&sid=013d264735c752e6d3e182053c581f85
Thanks I just ordered a Acorn and DYN4 1kw Servo Drives for a Tree 325 Mill this video will help so much.
Great. I hope you ordered the flying lead cables too. Do your basic bench test first before mounting on the mill
Post pictures on the Centroid users forum of your build
Thank you so much for your time Marty!
You are welcome!
The *minimum* signal wiring required to run a DYN4 is just 5 wires.. Pulse +/- differential pair, and Direction +/- differential pair and GND on one side of the cable (receiver side according to DMM) . The +24V, +5V, Alarm (ALM) and Enable (ENA) are not required.
Read the forum thread where people are having trouble getting any motion.. this definitely simplifies a bench test to prove there's nothing wrong with a DYN4/Servo :)
Andrew, thanks for that comment. You are correct.
My video was intended to how to wire the drive correctly to a Centroid Acorn board and do basic software configuration in the DMMDRV software and Acorn wizard.
Could you explain this in a diagram please? I have a ESS controller Nd it does not have the Alarm and Enable signals. Thank you kindly!
Great, will be using these on my unit.
Great! Good luck with your builds. Post pictures on the Centroid users forum of your build
@@martyscncgarage5275 waiting on my PC so I can join the forum
nice thanks for the great info on the Dyn4
Super Marty, excelent work !!!!
Thanks for the video marty
DMM technology suggests to power the logic L1 and L2 through a line filter and also 1A fuse. I did that on my DYN4 motor that is driving my spindle on my mini lathe. The way you have it wired can damage your drive if you get current higher than 1A. I suggest to check their manual on how to properly wire the high voltage cables to the logic and power terminals.
As I mentioned in my video, it wasn't about wiring the line side of the drive. I only did it that way in order to power up the drive. The EMI filter is to prevent noise interference from getting back into the power grid. You are correct on the fuse and you should also have an Emergency Stop contactor in your machine. This was a bench test. Thank you for your comment.
Yes you are correct. I indeed used a breaker and contactor to power the dyn4 and I wired the emergency stop in the coil of the contactor. Great video and indeed we should learn from each other. I will soon post a video on my use of acorn and dyn4 as spindle in my mini lathe. I will share all the setting that seems to work for now.
@@speppino great, love to see your video and your spindle being controlled by a DYN4 drive and motor. I've not yet seen one. Please post it to the Centroid User forums as well
@@speppino @martyscncgarage Hey! Do you use 1 phase or 3 phase? I will run on 1 phase, as our 3 phase has 380V, which is obviously too much, but on 1 phase I'm getting 230VAC, which is perfect. I intend to run AC 1 phase -> N+L MCCB (32A) -> 32A (or more) 1 phase (N+L) contactor -> split to 2 lines and both lines again to 3 ways. On logic lines I intend to use suggested 1A noise filter + 2x 1A fuses while high power lines goes directly into drive, without daisy chaining (they are split in one point). Now I have few questions:
- Should I get emergency switch on contactor or should I use emergency switch on my CNC controller and disable drive via EN pin? I don't like the idea of having separate emergency switches for drive/cnc controller.
- Is the MCCB (main fuse) of 32A@230VAC enough for 2x0.75kW+1x1kW motors?
- Did you guys thought about using main noise filter (20A) aswell on power cables? If so, before or after contactor and before or after splitting main power cable?
- Do you use drive fault status to tell CNC controller something is wrong with drive (for example crash - too much difference between the shaft real vs. desired orientation), to stop all drives, now that one drive is already faulted and stopped. (meaning one axis is not moving, while others are)
Thanks=)
@juresnip I connected the emergency stop in the coil of the contactor in series with the main power switch that powers the dyn4 drive. In this way it is safer because the coil drains only about 1 amp. I also use single phase 240V and I wired all the system according to the diagram in the dyn4 manual.
In addition the same emergency stop that I used has another switch inside electrically separated from the first one. I used this one to wire the estop signal from the acorn board. So in case I need to stop the lathe, I will disable spindle and axis steppers in one go.
I used a 50A breaker , but I am sure 30A is enough for your system too. Just double check the max current your motor can drain during operation and sum them up and see. My servo spindle is a the dmm 86.... 0.75kw and if I recall correctly is 8A max current. Then the 2 stepper hybrid on the axis both take 4A each. Total 16A. My breaker is an overkill for me.
I did not wire the dyn4 with the EN signal to the acorn, but I think acorn is smart enough to know that when spindle trips for some reason the lathe12 software stops the motors. It did to me many times when my spindle was tripping due to hard acceleration.
One important thing to be aware!!!! If you wire your system according to dyn4 manual make sure you have 2 separate switches to power dyn4 and acorn separately. The reason is that you need to make sure that acorn is initialized and lathe 12 is on before the spindle (dyn4) is on. Otherwise the spindle will have a sudden acceleration when you turn all together on at the same time. This can be very dangerous. Consider that my spindle is driven by the analog output of the acorn. And the dyn4 powers up in seconds, while acorn takes about a minute. This will cause spindle to sudden rotate before acorn is initialized. If you power acorn and lathe12 first and then the spindle, everything will be fine and safe.
You could use a filter in the main line if your power is dirty. Mine is not that stable and I do not use any in the line and I do not seem to have any issue so far.
Hope this helps.
Thanks for the video. Your videos are always informative and easy to follow. I appreciate the way that you explain details.
I just ordered a DYN4 and NEMA 34 servo today along with the necessary cables, including the flying lead cable. Since I only need 2,000 RPM, 120VAC should work. The manual only shows 3-phase and 240VAC single-phase. The manual also shows fuses on both L1 and L2. Am I correct in only fusing L1 (hot) and not fusing L2 (neutral)?
That is correct. You only fuse the hot leg.
What to say except: thank you again!
I'm eagerly waiting for the next video :-) I am planning to do a conversion of a lathe with, of course, Centroid CNC software and DYN4 AC Servo drives and motors.
Please, from your experience what is the best solution to do with the lathe gearbox which is not needed as I am planning to use the inverter and encoder?
If somewhere is a good explanation just notice it here. I do not want to waste your time.
Marty,
I see how to connect _one_ DMM DYN4 servo drive to the acorn and am about to test it. But it occured to me: when its time to connect 4 drives, I see only _two places_ on the Acorn board. So do you piggyback two drives to one, and piggyback the other two drives to the second place? (hope that question makes sense) I guess I'm missing a concept here, I fail to see how two drives sharing, all the same terminal posts, can be differentiated apart by the acorn. I would have thought each drive would have its own place for the connections.
Acorn is 4 axis. Look at it's schematic.
@@martyscncgarage5275
Ok. Thanks Marty!
I assume you are talking about looking @ doc S14953.DWG Standard Connections rather than S14969.DWG DMM DYN4, which you are referring to in your above video. So in fact, according to S14953.DWG Standard Connection: two drives are piggybacked onto Terminal block H2, and two drives are piggybacked onto Terminal block H3.
Again thanks!
@@crookedriver2079 piggy back is an incorrect term. 2 drives one terminal block and two drives on the other.
Hi
Can you explained more about pin 15 enable.
When send 5 v dc to the pin 15 drive stop disable.
Stop 5 v dc and drive enable?
Thanks
Centroid Acorn system? If so, simply wire per the schematics, choose DYN4 drive in the CNC12 version 4.20.1 Wizard
have been watching your videos and have learnt a lot of information saving countless hours for research to find helpful information was wondering if you could help with what connection plug is used on the oak board and if there are any special tools required to terminate ends Centroid has flying leads also do we use centroid or dmm flying lead obviously I will need to terminate the opposite end of one of them thanks keep up the good work cheers Trevor
If you buy the Oak cables from DMM, they are already made up. Just plug into Oak and DYN4.
DMM is about to release new firmware for DYN4 to be used with Oak. I'm waiting for it so I can test.bif you order, be sure to tell DMM that you will be using DYN4 with Centroid Oak and you need the latest firmware. You can not install the DMM firmware yourself
thanks for that Marty can you let me know when you get it. I am waiting for delivery of an oak system have been doing research on plc programming I have a cincinatti arrow 750 with a auto tool changer I have had no experience with plc programming will you be working on any tool changer setups and examples of conections and programming in the near future cheers Trevor
@@TPOSFabrications umbrella or swing arm? Centroid has some PLCs already done. You will need a PLC 1616 IO add on board for the extra IO needed for the changer
it is an umbrella i have ordered the plc1616 there are optical sensors on clamp tool open close and spindle orientation tool drum out in i think these would be fairly standard on most mills the spindle orientation is still to be decided because i will need to get a vsd or spindle drive it is a three phase kollmorgan motor and had a kolmorgan bds5 drive that has lost its parameters dead battery backup i would prefer to get a newer type drive that would also allow easier spindle orientation and communication with centroid oak any suggestions would be appreciated I See you have a VMC have you retrofitted it Cheers Trev
Is it possible to run dyn2 on x and y. With dyn4 on z?
You could connect them all to the DB25. You would need to sort the drive enable on the Dyn4 if you use the enables. Likely using the open collector header connector. Contact DMM technologies support for further guidance.
I know you have done a video on making a report on centroid, but I am just starting out on centroid for my lathe build and need to upgrade the software so I can run a spindle encoder. I was wondering if I can create a report and send for the upgrade before I get the lathe wired and running on the free version. This will save time later. Thanks
Yes you can order the license any time.
martyscncgarage Thanks
Hi, my name is Wagner and I never have or used a CNC and I need have one now for engraving parts and put serial numbers in guns, I need help for set up a milling machine only for engraving and everybody say that is easy but for me is not I watch lot of videos and so far yours is the best for me because do way you explain, I like know If you can help me, I have lot of parts including a PM25 still in the box and I have centroid Acorn.
Thank you
Wagner Damotta
Hi Wagner. You might be better off subcontracting that work. That way you don't have to buy/build a CNC machine or learn how to use it and the necessary software
martyscncgarage
Thank you sir
Thanks Martys for those very useful information , I'm from a other world of mach3 , 4 with stepper motor and card form someone else and trying to fit one with the other. Now I decide to go with centroid Acorn for my new router . As I mention I'm a newbie with the Centroid system and French Canadian so the transition is hard. I tried to figure out in the video but need more specific information about what I'm doing. I have bought 4 servo drive and motor 1kw for my new machine , I have plug those motor into a card (MB3) the axe was moving and I had some help from someone on the web site cnczone but i was a difficult thing to do . I was on the point of installing my proximity switch and some E stop show up from I don't know where , on e stop was put down and no light on the board was on ??? So I said that enough I'm going with more professional hardware . I'm starting from zero with acorn. Would you accept to check my Data/paper to figure with way is the best for me and Centroid. Thanks for you help . W3.usinart400@gmail.com
First, buy the DYN4 to ACORN cables from DMM. That will make things a bit easier. DMM has hook up drawings. If you want to wire the DB25 connectors yourself, there are schematics on the Centroid Website. www.centroidcnc.com/centroid_diy/acorn_cnc_controller.html (Scroll down about half way or search the page for schematics)
Any questions as you go along PLEASE post them to the Centroid Acorn User Forums: centroidcncforum.com/viewforum.php?f=60
You might read this thread where I helped a user STEP BY STEP get his router going: centroidcncforum.com/viewtopic.php?f=63&t=2116
Make sure post pictures of your build on the Centroid User's forum!
@@martyscncgarage5275 Thanks Sir for the fast reply. Do you thinks my chinese motor will work the sama as the dmm . alain roy
Marty, nice videos .. thanks ! btw is acorn open or close loop system ? thanks ! Joe
Acorn is open loop. A food way to go is to used hybrid stepper motors and drives. Such as those from automationtechnologiesinc.com or AC servo from DMM. Both accept step and direction signals, both have encoders on the motors that feedback to the motor drives. The drives close the loop. A good way to have a reliable system at a reasonable cost
@@martyscncgarage5275 Thanks so much for that info ! keep up the good videos !
Great video! One question: In this video ruclips.net/video/YC04zuUjEK8/видео.html it is stated that you should not jumper the RST to L1 and L2, but you did that (actually you used jumper from L1 and L2 to R and S). Why is it not allowed? I can't see any difference when comparing jumper to wiring directly to the power supply.
You are supposed to filter and fuse the Logic power to the drive.
This looks like a lot of trouble! Maybe CAN or Modbus would be easier?
Trouble? No trouble...knock yourself out with can and modbus. Not for me. Not in Centroid either.