# How much power does a stepper motor use?

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A typical stepper motor like our NEMA 17 might have a rated voltage of 2.8 Volts and a maximum current of 1.68 Amps. This basically means if you hook it up to 2.8 Volts it will draw 1.68 Amps. If you try to run it at a higher voltage it will draw more current and get excessively hot.

## How do you calculate the power of a stepper motor?

Re: How to calculate stepper motor power requirement? Using normal constant current drivers, the total power consumed by the motor at rest is always equal to the square of the phase current times the phase resistance (this is because sin^2 + cos^2 = 1). So 1.5 x 1.5 x 1.4 W in your example.

## How much power does a NEMA 17 need?

Usually rated between 1.2 and 1.7 amps each. Figure 2 amps each motor and you have it covered.

## How efficient is a stepper motor?

Stepper motor systems are highly efficient when producing torque, but lack operational efficiency when not producing torque. … That means the drive electronics continuously supply current to the motor whether or not the load is demanding torque.

## How do you calculate the RPM of a stepper motor?

RPM = a/360 * fz * 60

Example 1: Drive step resolution is set for 1000 steps per revolution. Example 2: Drive step resolution is set for 500 steps per revolution. With input frequency of 1000hz, . 72 / 360 * 1000 * 60 = 120 rpm.

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## How strong is NEMA 17?

NEMA 17 is a hybrid stepping motor with a 1.8° step angle (200 steps/revolution). Each phase draws 1.2 A at 4 V, allowing for a holding torque of 3.2 kg-cm. NEMA 17 Stepper motor is generally used in Printers, CNC machines and Laser Cutters.

## Why is the efficiency of a stepper motor low?

5-6 the efficiency of the stepping motor is very low. This is due to the high current and the relatively high phase resistance of the small motor. However, from paragraph II, it follows the desired torque can be achieved with a smaller current. By reducing the current the losses can be heavily reduced in some areas. 