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How much power does a stepper motor have?
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 big is a stepper motor?
Step motors are categorized by NEMA frame size, such as “size 11” or “size 23” or “size 34”. Generally speaking, a size 11 step motor means the mounting face of the motor is 1.1 inches square; A size 23 step motor is 2.3 inches square; A size 34 step motor is 3.4 inches square, etc.
How to calculate the power of a stepper motor?
The current driver chip is limited to supply 0.7A. Would the power of the motor be equal to Supply Voltage * Rated Current. Or will it be equal to motor rated voltage * rated Current. The power absorbed by stepper motors varies depending on the state of the motor and driver.
What happens if you mismatch the driver on a stepper?
Mismatched motors and drivers can result in disappointing performance. Or worse: damage to the motor and/or controller. Voltage – The maximum voltage that the driver can supply to the motor. Continuous Current – The maximum current that the driver can supply to the motor. “Peak” current ratings are not applicable to stepper motors.
Can a stepper be used with a constant voltage driver?
But some motors have very low coil resistance. Strictly following those formulas, the drive voltage will be less than 5v and performance will not be good. This type of motor is not a good match for a constant-voltage driver. These steppers require a more specialized controller.
How are amps per phase calculated on a stepper?
Amps per phase – This is the maximum current that the motor windings can handle without overheating. Resistance per phase – This is the resistance of each phase. A Voltage rating is often stated. It is usually calculated from the two above – but not always. It is better to calculate yourself from the above parameters using Ohm’s Law . Obey the Law!