I want to use these because i can get them for free.
Technical Data
Rated voltage 24 V
Number of pole pairs 3
Rated power 103.7 W
Rated torque 22 Ncm
Rated speed 4500 rpm
Rated current 4.82 A
No load speed
(at operating temperature)
6250 rpm
No load current 0.44 A
Starting torque 60 Ncm
Torque constant 4.56 Ncm / A
Voltage stabilizer 2.8 mV / rpm
Terminal resistance between two
phases at 25C
0.46
Terminal inductance 0.43 mH
Rotor moment of inertia 123 gcm2
Thermal resistance between winding
and housing
0.46 K / W
Max. permitted ambient temperature 40 C
Max. permitted radial stress Fq 50 N
Max. permitted axial stress Fa 20 N
Mass 0.5 kg
Protection grade IP 41 to DIN EN 60529
IP 54 on request
Insulation class B to DIN EN 60034-1
Then controlling a BLDC motor with built in Hall sensors will be too challenging for you.
I bet, it will be too challenging for even most of very experienced Arduino users.
To give you an idea, what you would have to learn and understand:
MOSFET transistor circuits
3-phase half-bridge
6-step commutation of a 3-phase motor
Pulse Width Modulation (PWM)
Hall-Effect Digital Position Sensors
And then bring the hardware and software (Arduino sketch) together and interface with a CNC G-Code sender ...
Here some links if you want to dive deeper:
As Robin2 said, not impossible, but for beginners in electronics it could end in a disaster and waste of time and money. You might learn a lot going this path, but if you will succeed ??
Go with stepper motors, much easier and a lot more of proven builds.
Have a look at Robin2's "Stepper Motor Basics" as linked in the previous post and then just search for "GRBL, CNC, G-Code Sender" to start learning the software side of the medal.
I want to keep things simple so i will buy some Nema-s.
You know that NEMA is just about the face plate size of a stepper and has nothing to do with its electrical parameters?
Before you buy any stepper, make sure you understand the basics of those motors (torque, speed, current, inductance etc.)
rpt007:
You know that NEMA is just about the face plate size of a stepper and has nothing to do with its electrical parameters?
Before you buy any stepper, make sure you understand the basics of those motors (torque, speed, current, inductance etc.)
Yes i understand that Nema itself is just a name.
I was thinking about buying some kit from ebay/aliexpress, maybe something that contains motors and drivers, so i can be sure they will work.
Now looking whats what and whats good for me. My plan is to cut wood/plastic/aluminium. I will copy some setup, that is simple to build.
The question about RECM motor was because i have them laying around everywhere, they are from coffee machine mills and pumps. Pump goes bad but motor is still good, but spare pump comes with new motor.
Tanks for anwsers, i went trough Robin2-s stepper basic thread, very good reading for dummy like me
I want to keep things simple so i will buy some Nema-s.
NEMA is an american standards system for motor sizes.
You might want to buy some stepper motors, which happen to be commonly described by one
section of the NEMA standards.
