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Stepper motor for my project (ACT motor GmbH 17HS5412-3)

Posted by flydeprutten 
Stepper motor for my project (ACT motor GmbH 17HS5412-3)
April 19, 2017 10:03AM
Hi every one.

I am in search of some stepper motors for my project, and I have a few in mind. However, I encountered these motors, and can not quite figure out whether they are workable (I can not really find anybody online, who have used them). I will initially use a RAMPS with A4988 drivers for my printer. Will they work with my controller?

ACT Motor GmbH 17HS5412-3
Step Angle 1,8°
Rated Voltage 4,16 V
Rated Current 1.3 A
Phase Resistance 3.2 Ohm/Phase
Phase inducturance 5.5 mH/Phase
Holding Torque 5200 g-cm
Detent Torque 2.8 N.cm Max
Rotor Torque 68 g- cm²
Lead Wires 4
Shaft Diameter 5,0 mm
Motor Length 48 mm
Motor Weight 0,36 kg

Alternatively, I'm going to use 17HS19-1684S1 (1.68A, 45Ncm)

/Hans
Re: Stepper motor for my project (ACT motor GmbH 17HS5412-3)
April 20, 2017 12:31AM
They will both work fine, but I'd tend to the 1.68A version and run it with 1.3A max.
How to adjust Vref of your A4988 model ( there are different shunt resistors ) is described here.
Re: Stepper motor for my project (ACT motor GmbH 17HS5412-3)
April 20, 2017 07:56AM
Thank you for your input. :-)

Could you possibly clarify why you would choose 17HS19-1684S1. As I understand it, one should preferably choose a stepper motor with a low corrent, otherwise the motor driver may become too hot. 17HS5412-3 will be able to deliver a high holding torque at a low corrent. Is that not preferable?
Re: Stepper motor for my project (ACT motor GmbH 17HS5412-3)
April 21, 2017 12:21AM
An analougy would be: I can drive slow in a slow and a fast car, but I can only drive fast in a fast car.

So the stepper with the higher current rating will behave almost equally at low current and I can raise the current, if I see skipped steps later...
Holding torque isn't the most important figure in the list, but resistance and inductivity. They determine how fast the stepper can run at 12V and how hot it will get.

Lower inductivity can run faster. Lower resistance stays cooler ( at the same regulated current )
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