Hooking up a BLDC motor
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I’m trying to hook up a BLDC motor, but I’m in over my head. I found wiring diagrams for the motor to the motor controller, but now I am not sure how to connect the speed controller, I’m stuck. Please help me.
Motor connections on motor controller:
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asked 14 hours ago
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- 1This isn’t nearly enough detail. Please draw a diagram of what you have hooked up already. What are you stuck on exactly? How should it work as you understand it? – Drew 14 hours ago
- 1How do you want it to work? – Drew 14 hours ago
- I bought everything to make a welding turntable. In my head the motor should be controlled by the Speed controller with a rf remote. I figured when I bought this it would come with wiring schematics, blue wire goes here, green wire goes there type of thing. I found a diagram for the controller that shows where to connect the motor to it which is how I was able to run the wires you see in pictures. The motor to the controller shows yellow, green and blue to U V W, but my motor has yellow green and red. I connected the red to where it shows blue, just because it seems right. – Anthony Arnone II 14 hours ago
- 4The second picture seems unrelated to your question: it’s for a DC motor controller, not for a brushless motor controller. – Davide Andrea 12 hours ago
- When connected as shown, does the motor do anything when power is applied? does it turn or is it locked in one position? – user28910 12 hours ago
- Davide Andrea. Attempted to add the speed controller to the tags but I don’t have a high enough rating, I could only choose from a list of tags. – Anthony Arnone II 11 hours ago
- user28910 I have no way to control the motors speed so haven’t attempted to power it up yet. The only speed controller I have is the one shown in the pictures. – Anthony Arnone II 11 hours ago
- Your second image shows a wiring diagram but it is too small to see details. But it looks like there is a small potentiometer shown as a speed control connected to the controller. You will also need a DC power supply of 36-60V. – PStechPaul 10 hours ago
- 1PStechPaul I found a larger picture of the diagram, I have a power supply. 2nd pic down. My main issue right now is how to connect the speed controller. – Anthony Arnone II 10 hours ago
- If the speed controller I have was a potentiometer I would be golden. It’s not though, what I have and is needed for the application, so it can be timed to go slower at first for a pre-set amount of time before it reaches it’s maximum set value. The diagram shows 4 connections, I have 8 wires. I bought the controller, motor and power supply at the same time, but it came with no diagrams. I have had to find them. I told them what – Anthony Arnone II 4 hours ago
- I needed and showed them the speed controller I had, they matched up the motor, controller and power supply to the speed controller I already had. All I need to know is where to connect the 2-inverse limit wires, the 2 positive limit wires, where to put the + – wires for the motor, pretty sure the power wires come from the power supply. – Anthony Arnone II 4 hours ago
- 1Please put augmenting in the question rather than commenting comments: This is not chat. – greybeard 4 hours ago
- I don’t get to see any way the speed controller knows what (relative) speed to set: Does it have more terminals, buttons, knobs? – greybeard 3 hours ago
- greybeard Actually Walmart has the best info. on it. Here is a link. walmart.com/ip/… – Anthony Arnone II 3 hours ago
- ZM6650A Industrial Grade Low Voltage Big Power BLDC Driver User Guide（JH）- 2022mar05 zgbjdj.com/news2.asp?id=18847 – tlfong01 1 hour ago
- @tlfong01 thank you for the link, very helpful. – Anthony Arnone II 57 mins ago
- @Anthony Arnone: You are welcome. Please feel free to let me know if you need any Chinese translation. Cheers. – tlfong01 47 mins ago
- And for prototyping, I don’t use any pot. I usually use the following cheapy, US$2 PWM sig gen: raspberrypi.stackexchange.com/questions/104779/…. – tlfong01 30 mins ago
- It is easy to burn a BLDC motor. So you might find this helpful: How to burn a BLDC motor: penzu.com/p/d6211fec – tlfong01 2 mins ago Edit
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I see no useful way to control a BLDC driver using the remote of a brushed DC motor speed controller.
That looks serious(ly costly) equipment:
2kWatts is a lot when there are ~20 W turntables.
That aside, you can try to use the speed controller’s output to generate a signal for Ve:
Connect the BLDC driver’s COM to the speed controller’s 0V/GND/COM. I’d try a voltage divider 12 kOhms to motor+, two anti-serial 22 μF capacitors parallel 1.5 kOhms to COM – note that this may work for one direction, if that.
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answered 3 hours ago
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- No rigging. Being 100% sure they actually matched everything up to the speed controller I had and not having searched for better instructions until I had everything and started trying to wire it together, I never read that it was for a brushed motor. Boo, Nice catch. What would you suggest with similar functionality. Not sure a VFD will do it, will it? Fairly costly, about $695 for the 1.5kw motor the controller and a NMRV90 gear reducer, less than you would expect. This is supposed to be able to turn 500# with room to spare. I smoked the brushes and com. on the turntable I had, it was $1800. – Anthony Arnone II 2 hours ago
told them what I needed and showed them …To get useful, even helpful answers here, do the same at the top of your question.smoked the brushes and com[mutator] on the turntable I hadPut all information inviting good answers there. – greybeard 2 hours ago- (
500#LASER welding?) – greybeard 2 hours ago - Laser, don’t I wish, I weld production parts from my home on a 1099. No sir. 500# chunks of metal, vertical is no problem, it’s when I went horizontal with material offset the centerline. ie. saddles, fittings and such. I tried to be more concise about what I needed at the top. Someone edited it. Would this work? I’d still need help wiring it I am sure. amazon.com/VIGELA-Universal-Frequency-Converter-Applicable/dp/… – Anthony Arnone II 2 hours ago
- (Ah, pounds rather than RPM. Living in SI zone…) – greybeard 2 hours ago
- VFD’s usually are for driving ASMs. – greybeard 2 hours ago
- (The one sentence PStechPaul edited out was
not sure how to connect the speed controller, viz. revisions.) – greybeard 2 hours ago - That has been my problem. Thanks to you, now I know the speed control can’t work. PStechPaul has recently suggested I can probably apply voltage from a microcontroller DAC or filtered PWM. Which really means nothing to me and would be in the same boat, not knowing how to connect it. – Anthony Arnone II 1 hour ago
apply [the] filtered PWMfrom your brushed motor controller is what I sketch in my answer. Going to try and suggest an edit to your question – will probably take about half an hour. – greybeard 1 hour ago
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It looks like a simple potentiometer connected between COM and V+, with the wiper to Ve. There is also an enable input (EN) that is connected to COM. The pot might be between 2k and 10k, so 5k should be about right.
The diagram also shows connections from Hall effect sensors, H+, H-, Hu, Hv, and Hw. These would provide speed and position feedback. It will probably work OK without them. Otherwise, it will be necessary to contact the manufacturer of the controller and/or motor to obtain a compatible sensor module.
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answered 7 hours ago
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- If the speed controller I have was a potentiometer I would be golden. It’s not though, what I have and is needed for the application, so it can be timed to go slower at first for a pre-set amount of time before it reaches it’s maximum set value. The diagram shows 4 connections, I have 8 wires. I bought the controller, motor and power supply at the same time, but it came with no diagrams. I have had to find them. I told them what – – Anthony Arnone II 3 hours ago
- I needed and showed them the speed controller I had, they matched up the motor, controller and power supply to the speed controller I already had. All I need to know is where to connect the 2-inverse limit wires, the 2 positive limit wires, where to put the + – wires for the motor, pretty sure the power wires come from the power supply. – Anthony Arnone II 3 hours ago
- 1That controller is for a brushed DC motor, and cannot be used for a BLDC motor. I think all you need is a potentiometer, which you can purchase anywhere for a few dollars. If you need special functions like programmed time and speed, you can probably apply voltage from a microcontroller DAC or filtered PWM. – PStechPaul 3 hours ago
- 1(@AnthonyArnoneII:
told them what I needed and showed them …To get useful, even helpful answers here, do the same at the top of your question.) – greybeard 2 hours ago - @PStechPau Yah, I built a gaming computer around 15 years ago that still up and running because the instructions said tab A goes into slot A and showed pictures. Guess I am stuck with basic controls. How would I connect a toggle switch to change directions. – Anthony Arnone II 1 hour ago
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