MDI spindle speed is not correct.
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Re: MDI spindle speed is not correct.
Hi tblough,
Sorry, I misunderstood what you were saying. When I searched "signal isolators" in the Centroid installation manual, I was directed to the page about snubbers. I'm not sure if a snubber and a capacitor are the same things, but I installed what I thought was a snubber; it says 0.1uF-120ohms, which is what the Centroid manual shows as a snubber.
Anyway, I don't think I said in this post, but I'm trying to use a Dyn4 servo driver and motor for this spindle setup. I'm not sure if that makes a difference because it's not a VFD.
Something like this? (amazon link)
https://a.co/d/74rwy9o
Sorry, I misunderstood what you were saying. When I searched "signal isolators" in the Centroid installation manual, I was directed to the page about snubbers. I'm not sure if a snubber and a capacitor are the same things, but I installed what I thought was a snubber; it says 0.1uF-120ohms, which is what the Centroid manual shows as a snubber.
Anyway, I don't think I said in this post, but I'm trying to use a Dyn4 servo driver and motor for this spindle setup. I'm not sure if that makes a difference because it's not a VFD.
Something like this? (amazon link)
https://a.co/d/74rwy9o
-Lee
New River, AZ
New River, AZ
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Re: MDI spindle speed is not correct.
what make model VFD are you using?
link to manual?
link to manual?
Need support? READ THIS POST first. http://centroidcncforum.com/viewtopic.php?f=60&t=1043
All Acorn Documentation is located here: viewtopic.php?f=60&t=3397
Answers to common questions: viewforum.php?f=63
and here viewforum.php?f=61
Gear we use but don't sell. https://www.centroidcnc.com/centroid_di ... _gear.html
All Acorn Documentation is located here: viewtopic.php?f=60&t=3397
Answers to common questions: viewforum.php?f=63
and here viewforum.php?f=61
Gear we use but don't sell. https://www.centroidcnc.com/centroid_di ... _gear.html
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Re: MDI spindle speed is not correct.
This is a link to the manual for the driver I'm using.
Model number: DYN4-H01A2-00
https://www.dmm-tech.com/Files/DYN4MS-ZM7-A10A.pdf
Model number: DYN4-H01A2-00
https://www.dmm-tech.com/Files/DYN4MS-ZM7-A10A.pdf
-Lee
New River, AZ
New River, AZ
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Re: MDI spindle speed is not correct.
That is most definitely not a VFD. You might try contacting DMM.
Cheers,
Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.
Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.
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Re: MDI spindle speed is not correct.
There are some threads here with problems using DMM servos as spindle drive, but nobody posted a solution...
Uwe
Uwe
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Re: MDI spindle speed is not correct.
Hi Uwe,
I have been searching through the forum to find someone who has successfully set up the DMM motor and driver as a spindle with the Acorn. I found two people, Pete Rondeau and Bhouin, who claim to have done it, but they haven't posted any diagrams or settings. Before purchasing from DMM, I emailed them to ask if their motor and driver would work as a spindle with the Acorn, and they said yes. They even sent me a diagram, which seemed to work, but I am now facing an issue where the Acorn doesn't turn on the spindle until about 4.2V. I can't afford to buy another driver and motor, so I have to figure this out. It also seems like I will need to add some code to the PLC that CNCSNW created to prevent the Dyn4 driver from getting an overvoltage alarm, but I need to fix this issue first.
;==============================================================================
StandardSpindleStage
;==============================================================================
IF (SpindleEnableOut_M || SpinStart_M ) && !SpinStop_M
THEN SET SpindleEnableOut_M
IF !((SpindleEnableOut_M || SpinStart_M ) && !SpinStop_M) THEN RST SpindleEnableOut_M
IF SpindleEnableOut_M THEN SET VFDEnable_O, RST VFDDisableTimer
IF SpindleEnableOut_M && !SpindleDirectionOut_M && SpindleBrakeTimer THEN SET SpinFWD
IF SpindleEnableOut_M && SpindleDirectionOut_M && SpindleBrakeTimer THEN SET SpinREV, SET VFDDirection_O
IF !SpindleEnableOut_M THEN (DoSpindleStop), VFDDisableTimer = 2000, SET VFDDisableTimer
IF VFDDisableTimer THEN RST VFDEnable_O, RST SpinFWD, RST SpinREV, RST VFDDirection_O
I have been searching through the forum to find someone who has successfully set up the DMM motor and driver as a spindle with the Acorn. I found two people, Pete Rondeau and Bhouin, who claim to have done it, but they haven't posted any diagrams or settings. Before purchasing from DMM, I emailed them to ask if their motor and driver would work as a spindle with the Acorn, and they said yes. They even sent me a diagram, which seemed to work, but I am now facing an issue where the Acorn doesn't turn on the spindle until about 4.2V. I can't afford to buy another driver and motor, so I have to figure this out. It also seems like I will need to add some code to the PLC that CNCSNW created to prevent the Dyn4 driver from getting an overvoltage alarm, but I need to fix this issue first.
;==============================================================================
StandardSpindleStage
;==============================================================================
IF (SpindleEnableOut_M || SpinStart_M ) && !SpinStop_M
THEN SET SpindleEnableOut_M
IF !((SpindleEnableOut_M || SpinStart_M ) && !SpinStop_M) THEN RST SpindleEnableOut_M
IF SpindleEnableOut_M THEN SET VFDEnable_O, RST VFDDisableTimer
IF SpindleEnableOut_M && !SpindleDirectionOut_M && SpindleBrakeTimer THEN SET SpinFWD
IF SpindleEnableOut_M && SpindleDirectionOut_M && SpindleBrakeTimer THEN SET SpinREV, SET VFDDirection_O
IF !SpindleEnableOut_M THEN (DoSpindleStop), VFDDisableTimer = 2000, SET VFDDisableTimer
IF VFDDisableTimer THEN RST VFDEnable_O, RST SpinFWD, RST SpinREV, RST VFDDirection_O
-Lee
New River, AZ
New River, AZ
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Re: MDI spindle speed is not correct.
I have been working with DMM. It looks like their driver is working correctly, at least with this issue. 0-10V from a power supply runs the spindle through all the RPM range, just not with the 0-10V from the Acorn analog output.
-Lee
New River, AZ
New River, AZ
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Re: MDI spindle speed is not correct.
Then we're back to trying a signal isolator
Cheers,
Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.
Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.
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Re: MDI spindle speed is not correct.
Hi tblough,
I will give it a try, and I appreciate you taking the time to help me out. I searched for a video on Acorn and signal isolators, and I came across a video by a person named Franco, who demonstrated the KBS1-240D signal isolator. Unfortunately, this product is currently out of stock. Therefore, I attempted to find a comparable product on Amazon that I could test quickly and inexpensively. This is what I discovered. Although I am not very familiar with this type of equipment, it seems to be quite similar.
Thanks again
(Amazon Link)
https://a.co/d/dwdXrIB
I will give it a try, and I appreciate you taking the time to help me out. I searched for a video on Acorn and signal isolators, and I came across a video by a person named Franco, who demonstrated the KBS1-240D signal isolator. Unfortunately, this product is currently out of stock. Therefore, I attempted to find a comparable product on Amazon that I could test quickly and inexpensively. This is what I discovered. Although I am not very familiar with this type of equipment, it seems to be quite similar.
Thanks again
(Amazon Link)
https://a.co/d/dwdXrIB
-Lee
New River, AZ
New River, AZ